- Articulated Truck
- 725 (S/N: B1L1-UP; AFX1-UP)
- 725C (S/N: LFB1-UP; TFB1-UP)
- 725C2 (S/N: 2T31-UP; 2L61-UP)
- 730 (S/N: AGF1-UP; B1M1-UP)
- 730 EJECTOR (S/N: B1W1-UP)
- 730C (S/N: LFF1-UP; TFF1-UP)
- 730C EJECTOR (S/N: LFH1-UP; TFH1-UP)
- 730C2 (S/N: 2T41-UP; 2L71-UP)
- 730C2 EJ (S/N: 2T51-UP; 2L81-UP)
- 735 (S/N: B1N1-UP; AWR1-UP)
- 735B (S/N: L4D1-UP; T4P1-UP)
- 735C (S/N: LFJ1-UP; TFJ1-UP)
- 740 (S/N: AXM1-UP; B1P1-UP)
- 740 EJECTOR (S/N: 3F71-UP; 3T71-UP; B1R1-UP; AZZ1-UP)
- 740 GC (S/N: 3F81-UP; 3T81-UP)
- 740B (S/N: L4E1-UP; T4R1-UP)
- 740B EJECTOR (S/N: L4F1-UP; T4S1-UP)
- 740C EJECTOR (S/N: LFN1-UP; TFN1-UP)
- 745 (S/N: 3F61-UP; 3T61-UP)
- 745C (S/N: LFK1-UP; TFK1-UP)
- D250E Series II (S/N: 4PS1-UP)
- D300E Series II (S/N: 5KS1-UP)
- D350E Series II (S/N: 2XW1-UP)
- D400E Series II (S/N: APF1-UP; 8PS1-UP)
- 725C (S/N: LFB1-UP; TFB1-UP)
Introduction
This Special Instruction is intended to identify the most common event codes that occur on Articulated Trucks. The Special Instruction will also outline the interpretation of the information that is shown in the transmission shift matrix. The event codes and transmission shift matrix information that is discussed in the Special Instruction can be accessed by using Caterpillar's Electrical Technician.
Event codes represent the symptom of operational problems. These event codes indicate the operation of the machine to the service technician. This Special Instruction will identify the event codes, the parameters for tripping the event codes, the possible reasons for the machine operator to trip the event codes, and the possible effects to the machine.
References
Reference: Caterpillar Service Tool Software, NEHS0679, "Caterpillar Electronic Technician"
Reference: Special Instruction, REHS0126, "Diagnostic Code Information for Caterpillar Electronic Control".
Event Codes
The event log records the number of different events of all the different types of event that happen on the machine. When such an event happens, the event will be recorded by the ECM as well as the time of the event. When the number of events of one type is above 127, the log is full in regard to recording events of that type. The log cannot record above 127 events, even though the possibility exists that more events are happening.
The time of the first event will always be indicated. When the log is full and an event occurs, the 127 event is replaced by the latest event and the time of the latest event is recorded.
The warning category indicator will show the warning level. This event can be seen on Caterpillar Electronic Technician. The number in the bracket that follows the event code indicates the warning level. An example is code E047 (2) which indicates a transmission abuse event at level 2. Refer to Operation and Maintenance Manual, "Warning Categories".
| Event Codes | |
|---|---|
| EID | Description |
| E047-(1) | Transmission Abuse Warning |
| E047-(2) | Transmission Abuse Warning |
| E049-(2) | Coasting in Neutral Warning |
| E096-(2) | High Fuel Pressure Warning |
| E106-(2) (1) | High Front Brake Oil Temperature |
| E107-(2) (1) | High Rear Brake Oil Temperature |
| E108-(2) | Machine Upshift to Prevent Engine Overspeed |
| E155-(2) | High Torque Converter Oil Temperature |
| E179-(2) | Alternator Not Charging |
| E190-(1) | Engine Overspeed Warning |
| E198-(2) | Low Fuel Pressure (Derate) |
| E198-(2) | Low Fuel Pressure (Warning) |
| E199-(1) | Low Coolant Temperature |
| E232-(1) | High Fuel/Water Separator Water Level |
| E232-(2) | High Fuel/Water Separator Water Level |
| E234-(1) | Low Auto Lube Grease Level |
| E265-(2) | User Defined Shutdown |
| E273-(2) | Machine Operation Attempted Using An Invalid Key |
| E284-(2) | Low Brake Accumulator Pressure |
| E284-(3) | Low Brake Accumulator Pressure |
| E326-(3) | Low Transmission Latching Pressure (2) |
| E327-(3) | Low Output Transfer Gear Pressure |
| E328-(3) | Output Transfer Gear Filter Plugged |
| E329-(2) | Transmission Filter Plugged |
| E329-(3) | Transmission Filter Plugged |
| E330-(3) | Transmission Output Speed Mismatch |
| E360-(1) | Low Engine Oil Pressure (Warning) |
| E360-(3) | Low Engine Oil Pressure (Derate) |
| E361-(1) | High Engine Coolant Temperature (Warning) |
| E361-(2) | High Engine Cooland Temperature (Derate) |
| E362-(1) | Engine Overspeed (Warning) |
| E362-(3) | Engine Overspeed (Warning) |
| E363-(2) | High Fuel Supply Temperature (Derate) |
| E490-(2) | Park Brake Applied while Shift Lever Not in Neutral |
| E539-(1) | High Intake Manifold Air Temperature (Warning) |
| E539-(2) | High Intake Manifold Air Temperature (Warning) |
| E542-(2) | Low Steering Pump Pressure |
| E542-(3) | Low Steering Pump Pressure |
| E556-(3) | Low Brake Pump Pressure |
| E583-(1) | High Air Inlet #1 Differential Pressure (Warning) |
| E583-(2) | High Air Inlet #1 Differential Pressure (Derate) |
| E593-(2)(3) | Aftertratment Insufficient Temperature to Complete Regeneration |
| E627-(1) (4) | Machine Driven with Parking Brake On |
| E667-(2) | Machine Overspeed |
| E678-(2) | Ground Level Shutdown |
| E706-(3) | Park Brake Disabled Due to System Fault |
| E716-(1) | Conflicting Brake Pressure Information |
| E716-(1) | Conflicting Brake Pressure Information |
| E763-(1) | Trip Data Memory Low |
| E764-(1) | Trip Data Memory Full |
| E861-(1) | Clock Manual Alignment Required |
| E863–(1) | Abnormal Machine Auto Lube System Operation |
| E877-(2) | High Transmission Oil Temperature |
| E878-(2) | High Hydraulic Oil Temp |
| E879-(2) | Hydraulic Tank Oil Filter Plugged |
| E991-(3)(3) | DPF Active Regeneration Inhibited Due to Permanent System Lockout |
| E992-(3)(3) | DPF Active Regeneration Inhibited Due to Temporary System Lockout |
| E993-(2)(3) | DPF Active Regeneration Inhibited Due to Inhibit Switch |
| E995-(2)(3) | High DPF #1 Soot Loading |
| E995-(3)(3) | High DPF #1 Soot Loading |
| E997-(1)(3) | High DPF #1 Ash Loading |
| E997-(2)(3) | High DPF #1 Ash Loading |
| E1003-(2) | Hgih Brake Oil Temperature |
| E1008-(1)(3) | High DPF #1 Intake Temperature |
| E1008-(2)(3) | High DPF #1 Intake Temperature |
| E1014-(2)(3) | Low DPF #1 Intake Temperature |
| E1023–(2) | Ejector Blade Not Responding To Command |
| E1025-(2)(3) | Aftertreatment #1 Failed to Ignite |
| E1026-(1)(3) | Aftertreatment #1 Loss of Combustion |
| E1026-(2)(3) | Aftertreatment #1 Loss of Combustion |
| E1036-(1) | High Crankcase Pressure |
| E1036-(2) | High Crankcase Pressure |
| E1040-(2)(3) | ARD Manually Disabled |
| E1045-(2) | Low Intake Manifold Pressure (Derate) |
| E1050-(1)(3) | High Aftertreatment #1 Fuel Pressure #1 |
| E1050-(2)(3) | High Aftertreatment #1 Fuel Pressure #1 |
| E1051-(1)(3) | High Aftertreatment #1 Fuel Pressure #2 |
| E1051-(2)(3) | High Aftertreatment #1 Fuel Pressure #2 |
| E1052-(1)(3) | Low Aftertreatment #1 Fuel Pressure #1 |
| E1052-(2)(3) | Low Aftertreatment #1 Fuel Pressure #1 |
| E1053-(1)(3) | Low Aftertreatment #1 Fuel Pressure #2 |
| E1053-(2)(3) | Low Aftertreatment #1 Fuel Pressure #2 |
| E1070-(1)(3) | Aftertreatment Fuel Injector #1 not responding |
| E1081-(2) | High Center Brake Oil Temperature |
| E1090-(2)(3) | High EGR Intake Pressure |
| E1092-(1)(3) | High EGR Temperature |
| E1092-(2)(3) | High EGR Temperature |
| E1093-(1)(3) | Low EGR Differential Pressure |
| E1094-(1)(3) | High EGR Differential Pressure |
| E1095-(1)(3) | Low EGR Mass Flow Rate |
| E1096-(1)(3) | High EGR Mass Flow Rate |
| E1096-(2)(3) | High EGR Mass Flow Rate |
| E1123-(1) | Engine Exhaust Manifold Bank #1 Flow Balance Valve Not Responding to Command |
| E1132-(1) | Inconsistent Product Software or Cofiguration |
| E1154-(1)(3) | Low DPF #1 Intake Pressure |
| E1154-(2)(3) | Low DPF #1 Intake Pressure |
| E1156-(1)(3) | High DPF #1 Intake Pressure |
| E1170-(1) | Low Aftertreatment #1 Secondary Air Pressure |
| E1171-(1) | Engine Idle Shutdown Occurred |
| E1172-(3) | Engine Idle Shutdown Pending |
| E1190-(3)(3) | Low Aftertreatment Cooling Fan Speed |
| E1217-(3)(3) | Delayed Engine Shutdown Override |
| E1239-(1)(3) | DPF #1 Conditions Not MEt for Active Regeneration |
| E1248-(1) | Front Cross Axle Lock Speed Mismatch |
| E1249-(1) | Center Cross Axle Lock Speed Mismatch |
| E1250-(1) | Rear Cross Axle Lock Speed Mismatch |
| E1251-(1) | Inter Axle Lock Speed Mismatch |
| E1300-(1)(3) | Aftertreatment Regeneration Cannot Start Due To Low Engine Temperature |
| E1301-(1)(3) | Aftertreatment Regeneration Cannot Start due to System Fault |
| E1302-(1)(3) | Aftertreatment Regeneration Cannot Start Due To Conditions Not Met |
| E1305-(!)(3) | Initial Assembly Aftertreatment #1 Regeneration Required |
| E1321-(1) | Real Time Clock Incorrect |
| E1320-(1) | Real time Clock Incoerrct |
| E1327-(1) | High Engine Speed Shift |
| E1329-(1) | High Clutch Temperature |
| E1363-(1) | Low Engine Cooling Fan Speed |
| E1449-(3) | Low Brake Accumulator Precharge Gas Pressure |
| E1507-(1) | Real Time Clock Master Not Secured |
| E1528-(1) | Low brake Accumulator Gas Pressure Test Overdue |
| E1528-(2) | Low Brake Accumulator Gas Pressure Test Overdue |
| E1676-(1) | High Inter Axle Lock Clutch Accumulated Thermal Energy |
| E1677-(1) | High Center Axle Lock Clutch Accumulated Thermal Energy |
| E1678-(1) | High Front Axle Lock Clutch Accumulated Thermal Energy |
| E1679-(1) | High rear Axle Lock Clutch Accumulated Thermal Energy |
| E2126-(1) | Payload Overload Limit Exceeded |
| E2174-(2) | Parking Brake Switch Off At Inappropriate Time |
| E2201-(2) | Transmission Slip Detected in First Forward Gear |
| E2202-(2) | Transmission Slip Detected in First Forward Gear |
| E2203-(2) | transmission Slip Detected in Third Forward Gear |
| E2204-(2) | Transmission Slip Detected in Fourth Forward Gear |
| E2205-(2) | Transmission Slip Detected in Fifth Forward Gear |
| E2206-(2) | Transmission Slip Detected in Sixth Forward Gear |
| E2207-(2) | Transmission Slip Detected in Seventh Forward Gear |
| E2208-(2) | Transmission Slip Detected in Eighth Forward Gear |
| E2209-(2) | Transmission Slip Detected in Ninth Forward Gear |
| E2301-(2) | Transmission Slip Detected in First Reverse Gear |
| E2302-(2) | Transmission Slip Detected in Second Reverse Gear |
| (1) | 735 and 740 with a continuous audible warning |
| (2) | 725, 730 and 735 with latching transmissions only |
| (3) | HRC Engines Only |
| (4) | Continuous audible warning |
E047-1 Transmission Abuse Event
This event is recorded when the operator shifts out of NEUTRAL or through NEUTRAL with the engine speed above the threshold.
Note: If the operator shifts the lever for the transmission control from neutral into any speed and the engine rpm is above the threshold, the directional shift management function will be activated. This action will decrease the engine speed below the threshold before the transmission is allowed to engage a gear.
Possible Causes
- The dump body is being raised and the engine is at high idle. If, the operator then moves the transmission control into any gear this action will create an event code.
- Driving the machine forward, stopping the machine and then selecting reverse gear before the engine RPM is below the threshold.
- When the machine is being driven forward with the engine RPM above the threshold, the operator then moves the transmission control to either the NEUTRAL position or to the REVERSE position.
E047-2 Transmission Abuse Event
This event is active when the machine is moving above
Possible Causes
- The machine is being driven forward down a steep grade in top gear.
E049-2 Coasting in Neutral
This event is recorded when the machine speed exceeds
Possible Causes
- When the machine is being driven at speeds above
19 km/h (12 mph) , the transmission control is in the NEUTRAL position and there are no application of the brakes.
E096-2 High Fuel Pressure (Warning)
This event is recorded when the fuel pressure gauge indicates that the pressure is above
Possible Causes
- Fuel pressure sensor
- Fuel lines damaged
- Fuel transfer pump
- Fuel return pressure regulator fault
E106-2 High Front Brake Oil Temperature Even
This event is recorded when the temperature switch for the front brakes indicates that the oil temperature is above
Possible Causes
- Excessive use of the brakes instead of using the retarder
E107-2 High Rear Brake Oil Temperature Event
This event is recorded when the temperature switch for the rear indicates that the oil temperature is above
Possible Causes
- Excessive use of the brakes instead of using the retarder
E108-2 Machine Upshift to Prevent Engine Overspeed Event
This event is recorded when the engine speed increases to a predetermined level which then sends a signal to the transmission ECM in order to upshift the transmission. The transmission will shift one gear position past the operator's selection in order to protect the engine from overspeed. This action only applies if the transmission control lever is in the FIRST GEAR position, the SECOND GEAR position or theTHIRD GEAR position.
When the transmission control lever is in the DRIVE position and the operator selects the maximum gear limit with the yellow button, the transmission will only shift one gear past the selected gear. If the operator has selected top gear and the engine speed continues to increase to a predetermined level that is above the engine overspeed, the engine will signal the transmission to disengage the lockup clutch in the torque converter. The event is also recorded when the transmission is forced to upshift past the gear limit for the body up or when the control lever is in the FLOAT position.
If the transmission control lever is in the DRIVE position and the machine down shifts, the transmission hold switch can be activated. This will hold the transmission in the preferred gear until the engine speed reaches a predetermined level. The engine will then send a signal to the transmission ECM in order to upshift the transmission.
Possible Causes
- Selecting an incorrect gear for an incline and then driving down the incline with insufficient retardation or no retardation
E155-2 High Torque Converter Oil Temperature Event
This event is active if the oil temperature for the torque converter is above
Possible Causes
- Excessive use of the hydraulic retarder (where used)
- Fault in the torque converter
- Excessive operation in torque converter drive
E179-2 Alternator Not Charging
This event becomes active when the R-term signal is less than 45Hz for greater than 5 mins whilst the engine has been as greater than 650RPM for at least 30 seconds.
Possible Causes
- Alternator belt has snapped or is slipping
- R-term signal harness issue
- Alternator failure
E190-1 Engine Overspeed Event
This event is activated when the operator triggers a E108 Machine Upshift to Prevent Engine Overspeed Event. The machine has already shifted up one gear and the engine speed has now increased to a higher predetermined level.
Possible Causes
- Selecting an incorrect gear for an incline and then driving down the incline with insufficient retardation or no retardation
E198-2 Low Fuel Pressure (Derate)
The event is activated when the engine speed and fuel pressure is below the following pressures when operating at the corresponding RPM:
| RPM | Pressure |
| 150 | |
| 675 | |
| 800 | |
| 925 | |
| 1050 | |
| 1350 | |
| 1750 | |
| 2420 | |
Possible Causes
- Fuel level low
- Fuel tank damaged
- Fuel filters blocked
- Fuel transfer pump
- Fuel pressure sensor
- Fuel return pressure regulator
- Fuel line
E198-2 Low Fuel Pressure (Warning)
The event is activated when the engine speed and fuel pressure is below the following pressures when operating at the corresponding RPM:
Possible Causes
- Fuel level low
- Fuel tank damaged
- Fuel filters blocked
- Fuel transfer pump
- Fuel pressure sensor
- Fuel return pressure regulator
- Fuel line
E199-1 Low Coolant Temperature (Warning)
The event is activated if the engine is operated under load for at least 90 seconds and the engine coolant temperature is
Possible Causes
- Operator does not let engine warm up before operation
- Thermostat defective
- Engine coolant temperature sensor defective
E232-1 High Fuel/Water Separator Water Level
The event is activated when water is detected, or when the switch is closed for more than 40 seconds. This diagnostic is designed to provide water/fuel separator status information to the operator. It will prevent water from entering the fuel system when the water/fuel separator is full.
Water in fuel sensor is programmed to Installed via CAT ET
Possible Causes
- Fuel is contaminated with water
- Water separator not serviced correctly
E232-2 High Fuel/Water Separator Water Level
The event is activated when water is detected, or when the switch is closed for more than 1 hour. This diagnostic is designed to provide water/fuel separator status information to the operator. It will prevent water from entering the fuel system when the water/fuel separator is full.
Engine Damage may occur if not serviced immediately
Water in fuel sensor is programmed to Installed via CAT ET
Possible Causes
- Fuel is contaminated with water
E234-1 Low Auto Lube Grease Level
This event is triggered when the autolube module reports that grease level is low for greater than 60 seconds.
Possible Causes
- Auto lube grease level is low
- Internal fault with autolube pump
E265-2 User Defined Shutdown
This event is triggered when the ground level shutdown switch to the Electronic Control Module (ECM) has changed states. The engine will shutdown.
If the operator activated the emergency stop talk to the operator and determine the reason for the emergency stop shutdown. Confirm that the condition for the emergency stop shutdown has been resolved. Cycle the keyswitch in order to reset the control system.
If the emergency shutdown was not activated by the operator inspect the stop switches for evidence of damage that has been caused by vibration, moisture, or corrosion. Check the circuit for the shutdown switch.
Possible Causes
- Activated shut down switch
- Circuit for the shutdown switch fault
E273-2 Machine Operation Attempted Using an Invalid Key
This event is triggered when the MSS system has been installed on a machine but the system is unable to detect a valid key.
Possible Causes
- Standard key being used not MSS key
- Wrong MSS key is being used or is not registered to this machine
- Harness fault to MSS key reader module
- MSS key reader module has failed
E284-2 Low Brake Accumulator Pressure
This event is triggered if the brake oil accumulator pressure is low after the initial brake charge cycle is completed.
Possible Causes
- Brake pump defect.
- Brake charge solenoid valve failure
- Accumulator defect
- The park brake status is disengaged while the park switch is engaged with no engine speed
E284-3 Low Brake Accumulator Pressure
If the brake oil pressure status becomes normal with the engine running, then any brake oil pressure low warning status event will trigger this level 3 event..
Possible Causes
- Low of pump pressure or brake charge solenoid valve failure
- Brake accumulator failure
- Hose failure
E326-3 Low Transmission Latching Pressure Event
- 725 (S/N: AFX1-849), 730 (S/N: AGF1-794) and 735 (S/N: AWR1-454)
This event is recorded when the transmission pressure for the latching is too low for the corresponding engine speed of the machine. In this case, the ECM will inhibit shifting of the transmission. This action will cause the lockup clutch to disengage. The machines log this event if the machines have not been converted to a nonlatching system.
Possible Causes
- Refer to Systems Operation, Testing and Adjusting, RENR3484, "Power Train Pressures".
E327-3 Low Output Transfer Gear Pressure Event
This event is recorded when the oil in the output transfer gear is above
Possible Causes
- Damaged internal components within the output transfer gear
- Low oil level
- High oil temperature
- Scavenge Pump
E328-3Output Transfer Gear Filter Plugged Event
This event is recorded when the oil temperature in the output transfer gear is above
Possible Causes
- Internal component failure within the output transfer gear
- Contamination by dirt
E329-2 Transmission Filter Plugged Event
This event is recorded when the oil temperature for the transmission has initially risen above
Possible Causes
- Internal component failure within the transmission
- Contamination of the transmission oil
E329-3 Transmission Filter Plugged Event
This event is recorded when the oil temperature for the transmission has initially risen above
Possible Causes
- Internal component failure within the transmission
- Contamination by dirt
E330-3 Transmission Output Speed Mismatch Event
This event is recorded when the readings of the speeds from TOS1, TOS2, and COS sensors do not match. In this case, the ECM will inhibit shifting of the transmission. This action will engage the lockup clutch. The 725, 730, and 735 determines the transmission input speed from the COS. The 740 determines the transmission input speed from the status of the lockup clutch and the EOS.
Possible Causes
- Sensor Failure
- Faulty Wiring
- Refer to Systems Operation, Testing and Adjusting, RENR3442, "Articulated Trucks Power Train Electronic Control System" and Systems Operation, Testing and Adjusting, RENR8035, "Articulated Trucks Power Train Electronic Control System".
E360-1 Low Engine Oil Pressure (Warning)
When the oil pressure is below
Possible Causes
- Low engine oil level
- Aeration in the oil
- Low oil viscosity
- Plugged oil filter
- Faulty oil pump
- Faulty engine oil pressure sensor
- Faulty bypass valve
- Damaged suction tube or cracked suction tube
- Excessive wear of engine components
E360-3 Low Engine Oil Pressure (Derate)
When the oil pressure is below the threshold pressure for a designated engine speed for 4 seconds the event is logged. Engine will derate 17.5% per second
Pressure thresholds:
| Engine Speed (rpm) | Threshold Pressure |
| 0 | |
| 600 | |
| 700 | |
| 1200 | |
| 1400 | |
| 1600 | |
| 2200 | |
Possible Causes
- Low engine oil level
- Aeration in the oil
- Low oil viscosity
- Plugged oil filter
- Faulty oil pump
- Faulty engine oil pressure sensor
- Faulty bypass valve
- Damaged suction tube or cracked suction tube
- Excessive wear of engine components
E361-1 High Engine Coolant Temperature (Warning)
This event is recorded when the coolant temperature reaches
Possible Causes
- Low coolant level
- Coolant temperature sensor defective
- Water temperature regulator and/or pressure relief valve defective
- Radiator or heat exchanger plugged
- Engine cooling fan defective or running slow
- Water pump defective
- Cylinder head gasket failed
E361-3 High Engine Coolant Temperature (Derate)
If the engine has been running for at least 180 seconds and the coolant temperature reaches
The corresponding engine derate is as follows:
| Temperature | Derate |
| |
25% |
| |
50% |
| |
75% |
| |
100% |
Possible Causes
- Low coolant level
- Coolant temperature sensor defective
- Water temperature regulator and/or pressure relief valve defective
- Radiator or heat exchanger plugged
- Engine cooling fan defective or running slow
- Water pump defective
- Cylinder head gasket failed
E362-1 Engine Overspeed (Warning)
The event will register if the engine speed exceeds 2600 rpm after a upshift to prevent overspeed.
Possible Causes
- Incorrect gear selection
- Not using retarder correctly
E362-3 Engine Overspeed (Warning)
The event will register if the engine speed exceeds 2700 rpm for 0.6 seconds after and upshift to prevent overspeed. The event will reset when the engine speed drops below 2500 rpm.
Possible Causes
- Incorrect gear selection
- Not using retarder correctly
E363-2 High Fuel Supply Temperature (Derate)
The event will register when the supply temperature has exceeded
Possible Causes
- Fuel level in the tank low
- Fuel temperature sensor defective
- Fuel cooler defective
- Fuel return pressure regulator defective
- Restriction in fuel lines
- Fuel injector defective
E490-2 Park Brake Applied While Shift Lever Not In Neutral
The event will register if the brake is applied while the shift lever is not in Neutral.
Possible Causes
- Brake applied while shift lever is not in Neutral.
E539-1 High Intake Manifold Air Temperature (Warning)
The event will register when the intake manifold temperature has exceeded
Possible Causes
- Aftercooler leaking.
- Air piping leaking
- Aftercooler plugged externally
- ATAAC fan not operating correctly
- Outlet temperature sensor defective
E539-2 High Intake Manifold Air Temperature (Derate)
The event will register when the intake manifold temperature has exceeded
The corresponding engine derate is as follows:
| Temperature | Derate |
| |
3% |
| |
6% |
| |
9% |
| |
12% |
| |
15% |
| |
18% |
| |
20% |
Possible Causes
- Aftercooler leaking.
- Air piping leaking
- Aftercooler plugged externally
- ATAAC fan not operating correctly
- Outlet temperature sensor defective
E542-2Low Steering Pump Pressure Event
This event is recorded when the secondary steering system is armed and the primary steering pressure switch indicates that the primary steering pressure is low.
E556-3Low Brake Pump Pressure Event
This event is inhibited for the first 20 seconds of running of the engine. The delay allows the brake system to charge on the initial start-up. This event is recorded when the pressure switch for the braking system indicates that the brake pressure is below
E583-1 High Air Inlet #1 Differential Pressure (Warning)
The event will register when the air filter differential pressure is above the trip point pressure for 20 seconds.
Possible Causes
- Plugged air filters
- Damaged air inlet piping
- Damaged sensor
- Hood inlet damaged
E583-2 High Air Inlet #1 Differential Pressure (Derate)
The event will register when the air filter differential pressure is above the trip point pressure for 40 seconds.
The following are typical derate values::
| Temperature | Derate |
| |
10% |
| |
12% |
| |
14% |
| |
16% |
| |
18% |
| |
20% |
Possible Causes
- Plugged air filters
- Damaged air inlet piping
- Damaged sensor
- Hood inlet damaged
E593-2 Aftertreatment Insufficient Temperature to Complete Regeneration
Active regeneration failed due to an inability of the diesel particulate filter (DPF) to reach a high enough temperature. Engine power is derated. This event is enabled when all of the following conditions are met: regeneration is active, and hot test cell mode is not active. During regeneration the ARD temp is 40 deg or more below target temp for over 10 min. If this occurs twice the code will be logged.
E627-1 Machine Driven With Parking Brake On Event
This event is recorded when the parking brake is engaged and the machine speed is above
Possible Causes
- Applying the parking brake at speed above 5 MPH
E667-2 Machine Overspeed
This event is active when the machine is travelling above
Possible Causes
- The machine is being driven forward down a steep grade in top gear.
E678-2 Ground Level Shutdown
This event will indicate the operator that a remote shutdown switch is pressed to stop the engine.
E706-3 Park Brake Disabled Due to System Fault
This event is logged if the park brake solenoid is commanded off, while the park brake pressure status remains released for 2 or more seconds.
E716-1 Conflicting Break Pressure Information
This event is activated if the difference in pressure between the two pressure sensors for the brake charge system is greater than
Possible Causes
- In range data failure
E736-1 Trip Data Memory Low
This event is active when the on board cycle counter memory is running low. To correct this the cycle counter data should be downloaded via the service tool.
Possible Causes
- In range data failure
E764-1 Trip Data Memory Full
This event is active when the on board cycle counter memory is full. To correct this the cycle counter data should be downloaded via the service tool.
Possible Causes
- Onboard memory is full
E861-1 Clock Manual Alignment Required
This event is caused when there is a difference of over 50 SMU between the service hour meters on the machine ECMs. A manual sync can be performed from within the ET service tool.
Possible Causes
- ECM has been swapped out on machine without re-aligning clocks
E863-1 Abnormal Machine Auto Lube System Operation
This event is triggered when the autolube module stops communicating with the transmission ECM or reports an internal malfunction for greater than 60 seconds with the engine running.
Possible Causes
- Incorrect software configuration (Auto lube system not installed on machine)
- Auto Lube system not connected
- Internal fault with autolube module
- Wiring fault
E877-2 High Transmission Oil Temperature
This event is recorded when the temperature switch for the transmission indicates that the oil temperature is above
Possible Causes
- Transmission cooler blocked
- Lockup clutch solenoid defective
- Operating in a stall condition for excessive time
- Machine stuck
- Low transmission oil level
- Transmission clutch slipping
E878-2 High Hydraulic Oil Temp
This event will be recorded when the hydraulic oil temperature is above
Possible Causes
- Hoist valve sticking
- Hoist pressure relief valve defective
- Low oil level
- Hydraulic system contained
E879-2 Hydraulic Tank Oil Filter Plugged
This event will be recorded when the hydraulic oil filter bypass switch has activated for greater than 60 seconds with oil temperature greater than
Possible Causes
- Hydraulic oil filter is blocked and requires maintenance
- Bypass switch harness failure
- Bypass switch failure
- Hydraulic system contaminated
E991-3 DPF Active Regeneration Inhibited Due to Permanent System Lockout
This code activates when the estimated diesel particulate filter soot load is greater than 140%. The engine may not operate properly. Factory passwords are required in order to clear this code.
Refer to Troubleshooting, UENR0501, "Diesel Particulate Filter Collects Excessive Soot".
E992-3 DPF Active Regeneration Inhibited Due to Temporary System Lockout
This code activates when the engine has been running for 10 minutes after the E995-3 code has activated. The estimated diesel particulate soot load is greater than 116% for over 10 minutes. Manual diesel particulate filter regeneration must be initiated.
Refer to Troubleshooting, UENR0501, "Diesel Particulate Filter Collects Excessive Soot".
E993-2 DPF Active Regeneration Inhibited Due to Inhibit Switch
This code activates when the regen inhibit switch is active and the diesel particulate soot load is greater than 100%.
Refer to Troubleshooting, UENR0501, "ARD Is Disabled".
E995-2 High DPF #1 Soot Loading
This code activates when the estimated diesel particulate filter soot load is greater than 100%. The engine power will gradually derate as the soot load increases.
E995-3 High DPF #1 Soot Loading
This code activates when the estimated diesel particulate filter soot load is greater than 116%. Engine operation is limited to 60 second intervals when the CATElectroniic Technician (CAT ET) is not communicating with the ECM.
E997-1 High DPF #1 Ash Loading
This code activates when the engine hours since last ash model reset is greater than the service hours when the ash service should be performed.
Possible Causes
- The diesel particulate filter has not been cleaned according to the maintenance interval schedule.
E997-2 High DPF #1 Ash Loading
The engine hours since last ash model reset can be tuned up to 100 hours greater than the typical service hours. This code activates when the engine hours since last ash model reset is greater than the service and tunable service hours since the last reset. Regenerations are occurring more frequently.
Possible Causes
- The diesel particulate filter has not been cleaned according to the maintenance interval schedule.
E1003-2 Hydraulic Brake Oil Temperature
This event is recorded when the temperature sensor for the brake oil tank indicates that the oil temperature is above
Possible Causes
- Excessive Use of the service brakes
- Service brake dragging due to defect in brake
- Defective brake pedal
E1008-1 High DPF #1 Intake Temperature
The temperature at the intake of the DPF exceeded a predetermined value Active regeneration is immediately disabled.
Refer to Troubleshooting, UENR0501, "Diesel Particulate Filter Temperature Is High".
E1008-2 High DPF #1 Intake Temperature
The temperature at the intake of the DPF exceeded a predetermined value Active regeneration is immediately disabled..
Refer to Troubleshooting, UENR0501, "Diesel Particulate Filter Temperature Is High".
E1014-2 Low DPF #1 Intake Temperature
Active regeneration is immediately disabled. Engine power is derated. The code is logged. The code remains active until electrical power to the ECM is cycled.
Possible Causes
- The exhaust piping between the outlet of the ard and the intake of the dpf is disconnected and/or the DPF Inlet Temperature sensor has failed.
E1023-2 Ejector Blade Not Responding To Command
This event is triggered when the ejector system has been in the retract state for greater than 60s but its position has not been detected.
Possible Causes
- Blade jam
- Hydraulic failure
- Blade position switch fault
E1025-2 Aftertreatment #1 Failed to Ignite
This code will activate when one of the two conditions are met:
- The aftertreatment regeneration device (ARD) failed to ignite once during the ARD ignition test.
- The ARD failed to ignite during the normal regeneration attempt 4 or more times.
This code is usually accompanied by another logged code that indicates the condition that caused the failure to ignite.
Refer to Troubleshooting, UENR0501, "ARD Failed to Ignite".
E1026-1 Aftertreatment #1 Failed to Ignite
The aftertreatment regeneration device (ARD) has stopped generating heat at least four times during an active regeneration. Associated codes may indicate the system that caused the loss of combustion to occur. The code must be cleared with the "Reset All" button on the active diagnostics screen in CAT ET. If an active regeneration is initiated with the operator forced regeneration switch, the ECM clears this code automatically.
Refer to Troubleshooting, UENR0501, "ARD Loss of Combustion".
E1026-2 Aftertreatment #1 Failed to Ignite
The aftertreatment regeneration device (ARD) has stopped generating heat at least seven times during an active regeneration. Associated codes may indicate the system that caused the loss of combustion to occur. The code must be cleared with the "Reset All" button on the active diagnostics screen in CAT ET. If an active regeneration is initiated with the operator forced regeneration switch, the ECM clears this code automatically.
Refer to Troubleshooting, UENR0501, "ARD Loss of Combustion".
E1036-1 High Crankcase Pressure
The engine control module (ECM) activates this code when the crankcase pressure has exceeded the limit for a programmed time period. The amber warning lamp is illuminated. The code is logged. Engine power is derated
Possible Causes
- Obstructed tube
- Obstructed filter
- Obstructed hose
- Obstructed OCV system
E1036-2 High Crankcase Pressure
The engine control module (ECM) activates this code when the crankcase pressure has exceeded the limit for a programmed time period. The amber warning lamp is illuminated. The code is logged. Engine power is derated
E1040-2 Low Intake Manifold Pressure (Derate)
The regeneration system is disabled by the CAT Electronic Technician (ET).
E1045-2 Low Intake Manifold Pressure (Derate)
Possible Causes
- Air filter is plugged
- The inlet air system is restricted
- Air inlet piping damaged or loose connections
- ARD air valve defective
- Turbocharger defective
E1050-1 High Aftertreatment #1 Fuel Pressure #1
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is High".
Possible Causes
- The pilot pressure is
150 kPa (21.8 psi) or higher when regeneration is off - The pilot pressure is
2200 kPa (319 psi) or greater when regeneration is on
E1050-2 High Aftertreatment #1 Fuel Pressure #1
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is High".
Possible Causes
- The pilot pressure is
150 kPa (21.8 psi) or higher for more than 4 seconds when regeneration is off - The pilot pressure is
2200 kPa (319 psi) or greater for more than 4 seconds when regeneration is on
E1051-1 High Aftertreatment #1 Fuel Pressure #2
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is High".
Possible Causes
- The main pressure is
150 kPa (21.8 psi) or higher for more than 2 seconds when regeneration is off - The main pressure is
2200 kPa (319 psi) or greater for more than 2 seconds when regeneration is on
E1051-2 High Aftertreatment #1 Fuel Pressure #2
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is High".
Possible Causes
- The main pressure is
150 kPa (21.8 psi) or higher for 4 seconds when regeneration is off - The main pressure is
150 kPa (21.8 psi) or greater during regeneration when the solenoid is commanded off
E1052-1 Low Aftertreatment #1 Fuel Pressure #1
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is Low".
Possible Causes
- The pilot pressure is
150 kPa (21.8 psi) or greater for 4 seconds during regeneration.
E1052-2 Low Aftertreatment #1 Fuel Pressure #1
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is Low".
Possible Causes
- The pilot pressure is
150 kPa (21.8 psi) or less for 4 seconds during regeneration.
E1053-1 Low Aftertreatment #1 Fuel Pressure #2
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is Low".
Possible Causes
- The main pressure is
150 kPa (21.8 psi) or greater for 4 seconds during regeneration.
E1053-2 Low Aftertreatment #1 Fuel Pressure #2
Refer to Troubleshooting, UENR0501, "ARD Fuel Pressure is Low".
Possible Causes
- The main pressure is
150 kPa (21.8 psi) or less for 4 seconds during regeneration.
E1070-1 Aftertreatment Fuel Injector #1 not responding
Refer to Troubleshooting, UENR0501, "ARD Fuel Nozzle - Test".
Possible Causes
- More than 6 EID-WCI: 1026-1 codes activated during normal operation
- More than 1 EID-WCI: 1026-1 codes activated during service testing
E1081-2 High Center Brake Oil Temperature
This event is recorded when the temperature sensor for the center brakes indicates that the axle oil temperature is about
Possible Causes
- Excessive use of the service brakes
- Excessive or incorrect use of Auto retarder
- Service brake dragging due to defect in brake
- Defective brake pedal
E1090-2 High EGR Intake Pressure
Refer to Troubleshooting, UENR0501, "NOx Reduction System (NRS) - Test".
Possible Causes
- EGR absolute pressure above map level (Fuel vs. Engine speed)
E1092-1 High EGR Temperature
Refer to Troubleshooting, UENR0501, "NRS Exhaust Gas Temperature Is High".
E1092-2 High EGR Temperature
Refer to Troubleshooting, UENR0501, "NRS Exhaust Gas Temperature Is High".
E1093-1 Low EGR Differential Pressure
Refer to Troubleshooting, UENR0501, "NOx Reduction System (NRS) - Test".
E1094-1 High EGR Differential Pressure
Refer to Troubleshooting, UENR0501, "NOx Reduction System (NRS) - Test".
E1095-1 Low EGR Mass Flow Rate
Refer to Troubleshooting, UENR0501, "NOx Reduction System (NRS) - Test".
E1096-1 High EGR Mass Flow Rate
Refer to Troubleshooting, UENR0501, "NOx Reduction System (NRS) - Test".
E1096-2 High EGR Mass Flow Rate
Refer to Troubleshooting, UENR0501, "NOx Reduction System (NRS) - Test".
E1123-1 Engine Exhaust Manifold Bank #1 Flow Balance Valve Not Responding to Command
The engine ECM determines when conditions are adequate to open the exhaust balance valve. Also, the engine ECM determines when conditions are adequate to close the exhaust balance valve. The engine ECM monitors the NRS gas flow to determine if the exhaust balance valve reacted as commanded. If the NRS gas flow does not match the desired rate, the fault is logged.
E1132-1 Inconsistent Product Software or Configuration
Incorrect software has been flashed on machine. Mismatch of product ID between ECMs has occurred.
Possible Causes
- Check correct software is flashed
- Check datalinks are working correctly
- Check product id is correct
E1154-1 Low DPF #1 Intake Pressure
This code activates when the aftertreatment regeneration device (ARD) has ignited and the ARD has detected low DPF inlet temperature.
Active regeneration is immediately disabled. Engine power is derated. The code is logged. The code remains active until electrical power to the ECM is cycled.
Possible Causes
- The exhaust piping between the outlet of the ARD and the intake of the DPF is disconnected
- The DPF inlet temperature sensor has failed
E1154-2 Low DPF #1 Intake Pressure
This code activates when the aftertreatment regeneration device (ARD) has ignited and the ARD has detected low DPF inlet temperature.
Active regeneration is immediately disabled. Engine power is derated. The code is logged. The code remains active until electrical power to the ECM is cycled.
Possible Causes
- The exhaust piping between the outlet of the ARD and the intake of the DPF is disconnected
- The DPF inlet temperature sensor has failed
E1156-1 High DPF #1 Intake Pressure
The temperature at the intake of the DPF exceeded a predetermined value.
Active regeneration is immediately disabled.
Refer to Troubleshooting, UENR0501, "Diesel Particulate Filter Temperature Is High".
E1170-1 Low Aftertreatment #1 Secondary Air Pressure
Refer to Troubleshooting, UENR0501, "ARD Combustion Supply Air Pressure Is Low".
E1171-1 Engine Idle Shutdown Occurred
The engine has been idling for an extended amount of time. This notification is for the operator. This notification is not a suspected engine problem.
Engine Idle shutdown (EIS) installation status from machine controller should report as installed.
Engine shutdown occurs once the timer reaches 0 seconds remaining, injection should be disabled. The Total EIS Occurrences should be incremented once. If shutdown occurred, the code should be active until the key is turned to the OFF position.
Shutdown occurred, should be active until the key is turned to the OFF position.
All E1172 events should be inactive.
E1172-3 Engine Idle Shutdown Pending
The engine is preparing to shut down because of an extended "non-working" idle time.
Engine Idle shutdown (EIS) installation status from machine controller should report as installed.
Engine shutdown occurs once the timer reaches 0 seconds remaining, injection should be disabled. The Total EIS Occurrences should be incremented once. If shutdown occurred, the code should be active until the key is turned to the OFF position.
Shutdown occurred, should be active until the key is turned to the OFF position.
E1190-3 Low Aftertreatment Cooling Fan Speed
Refer to Troubleshooting, UENR0501, "ARD Combustion Supply Air Pressure Is Low".
CEM fan is actvated.
Communication over J1939 CAN A from CEM fan to engine ECM is lost or corrupted for 120 seconds or CEM fan speed is 300 tpm less than desired.
Note: This will cause a PDF regen to not start or be cancelled if in process.
E1217-3 Delayed Engine Shutdown Ovrride
"Delayed Engine Shutdown" has been overridden by the operator. The engine will be shut down. No troubleshooting required.
Note: This is logged to determine if the operator is not allowing the machine to cool down properly.
Possible Causes
- Delayed engine shutdown is needed (i.e hot engine or hot DPF)
- Key switch is turned counter clock wise to the DES override position.
E1217-3 Delayed Engine Shutdown Override
The operator did not allow enough time for regeneration to occur. The operator must respond when the DPF lamp is illuminated. The operator must allow the engine to idle until the soot load is reduced to 50 percent.
This event activates when the DPF soot percentage is 90% or more for 20 minutes or longer while the High Soot Load Event (E995-2) is active.
E1239-1 DPF #1 Conditions Not Met for Active Regeneration
The operator did not allow enough time for regeneration to occur. The operator must respond when the DPF lamp is illuminated. The operator must allow the engine to idle until the soot load is reduced to 50 percent.
This event activates when the DPF soot percentage is 90% or more for 20 minutes or longer while the High Soot Load Event (E995-2) is active.
E1248-1 Front Cross Axle Lock Speed Mismatch
This event code is intended to detect a problem in the front cross axle lock system where the clutch does not engage upon request.
Possible Causes
- Mechanical failure of the front cross axle lock solenoid
- Mechanical failure of the front cross axle clutch
Note: This event code does not distinguish between the two failures. Use CAT ET to override solenoid value and measure pressure value at its respective tap point. If the measure pressure is not as expected, it is most likely a mechanical solenoid failure.
E1249-1 Center Cross Axle Lock Speed Mismatch
This event code is intended to detect a problem in the center cross axle lock system where the clutch does not engage upon request.
Possible Causes
- Mechanical failure of the center cross axle lock solenoid
- Mechanical failure of the center cross axle clutch
Note: This event code does not distinguish between the two failures. Use CAT ET to override solenoid value and measure pressure value at its respective tap point. If the measure pressure is not as expected, it is most likely a mechanical solenoid failure.
E1250-1 Rear Cross Axle Lock Speed Mismatch
This event code is intended to detect a problem in the rear cross axle lock system where the clutch does not engage upon request.
Possible Causes
- Mechanical failure of the rear cross axle lock solenoid
- Mechanical failure of the rear cross axle clutch
Note: This event code does not distinguish between the two failures. Use CAT ET to override solenoid value and measure pressure value at its respective tap point. If the measure pressure is not as expected, it is most likely a mechanical solenoid failure.
E1251-1 Inter Axle Lock Speed Mismatch
This event code is intended to detect a problem in the inter axle lock system where the clutch does not engage upon request.
Possible Causes
- Mechanical failure of the inter axle lock solenoid
- Mechanical failure of the inter axle clutch
Note: This event code does not distinguish between the two failures. Use CAT ET to override solenoid value and measure pressure value at its respective tap point. If the measure pressure is not as expected, it is most likely a mechanical solenoid failure.
E1300-1 Aftertreatment Regeneration Cannot Start Due To Low Engine Temperature
This event is activated when the coolant temperature is below
If the ambient temperature is
E1301-1 Aftertreatment Regeneration Cannot Start Due To System Fault
Refer to Troubleshooting, UENR0501, "ARD Is Disabled".
E1302-1 Aftertreatment Regeneration Cannot Start Due To Conditions Not Met
Refer to Troubleshooting, UENR0501, ""ARD Is Disabled"".
E1305-1 Initial Assembly Aftertreatment #1 Regeneration Required
Refer to Troubleshooting, UENR0501, "ARD Is Disabled".
E1320-1 Real Time Clock Incorrect
This event is raised if the time and date has not been set on the engine ECM or there is a fault with timing hardware.
Possible Causes
- Time not set.
E1327-1 High Engine Speed Shift
This event is triggered if the shift lever is moved from neutral to reverse or forward positions and the truck is already in motion.
Truck allows shift to be made, but selects a gear to shift to, that matches transmission output speed (TOS) and will result in Engine Output Speed (EOS) not exceeding 1800 rpm.
Shift will be delayed up to 5 seconds during this time.
Possible Causes
- The operator is allowing the truck to coast in neutral, and then selects a gear position while truck is moving.
E1329-1 High Axle Lock Clutch Accumulated Thermal Energy
This event code is intended to detect raised temperature in any of the four axle clutches, including inter axle, front cross axle, center cross axle and rear cross axle clutches.
The temperatures are monitored by calculating and converting accumulated energy in the four clutches from speed sensors and clutch control commands. This event triggers and is active when clutch temperature is calculated to have exceeded
Possible Causes
- This event is most likely caused by extended period of clutch slipping under control pressure. No action is required. Clutch control will temporarily be disabled when the event is active to the temperature to decrease.
E1363-1 High Axle Lock Clutch Accumulated Thermal Energy
Refer to Troubleshooting, UENR0501, "Cooling Fan Speed - Test".
E1676-1 High Inter Axle Lock Clutch Accumulated Thermal Energy
This event code is intended to detect raised temperature in the inter axle clutch.
The temperatures are monitored by calculating and converting accumulated energy in the clutch from speed sensors and clutch control commands. This event triggers and is active when clutch temperature is calculated to have exceeded
Possible Causes
- This event is most likely caused by extended period of clutch slipping under control pressure. No action is required. Clutch control will temporarily be disabled when the event is active to the temperature to decrease.
E1677-1 High Center Axle Lock Clutch Accumulated Thermal Energy
This event code is intended to detect raised temperature in the center cross axle clutch.
The temperatures are monitored by calculating and converting accumulated energy in the clutch from speed sensors and clutch control commands. This event triggers and is active when clutch temperature is calculated to have exceeded
Possible Causes
- This event is most likely caused by extended period of clutch slipping under control pressure. No action is required. Clutch control will temporarily be disabled when the event is active to the temperature to decrease.
E1678-1 High Front Axle Lock Clutch Accumulated Thermal Energy
This event code is intended to detect raised temperature in the front cross axle clutch.
The temperatures are monitored by calculating and converting accumulated energy in the clutch from speed sensors and clutch control commands. This event triggers and is active when clutch temperature is calculated to have exceeded
Possible Causes
- This event is most likely caused by extended period of clutch slipping under control pressure. No action is required. Clutch control will temporarily be disabled when the event is active to the temperature to decrease.
E1679-1 High Rear Axle Lock Clutch Accumulated Thermal Energy
This event code is intended to detect raised temperature in the rear cross axle clutch.
The temperatures are monitored by calculating and converting accumulated energy in the clutch from speed sensors and clutch control commands. This event triggers and is active when clutch temperature is calculated to have exceeded
Possible Causes
- This event is most likely caused by extended period of clutch slipping under control pressure. No action is required. Clutch control will temporarily be disabled when the event is active to the temperature to decrease.
E1449-3 Low Brake Accumulator Precharge Gas Pressure
Triggered if after an engine start-up brake system check, the precharge gas pressure was calculated and was determined to be low. Below
Possible Causes
- Accumulator leaking internally
- Faulty or incorrect accumulator installed
E1507-1 Real Time Clock Master Not Secured
This event is raised if MSS is installed without enabling real time clock secured on engine ECM.
Possible Causes
- Secured real time clock (RTC) enable status: set to not installed.
E1528-1 Low Brake Accumulator Gas Pressure Test Overdue
This event is triggered if 500 service hours have elapsed since the last low brake accumulator gas pressure test was carried out.
Possible Causes
- Accumulator has not had a chance to bleed down to empty for the test to be carried out.
E1528-2 Low Brake Accumulator Gas Pressure Test Overdue
This event is triggered if 550 service hours have elapsed since the last low brake accumulator gas pressure test was carried out.
Possible Causes
- Accumulator has not had a chance to bleed down to empty for the test to be carried out.
E2126-1 Payload Overload Limit Exceeded
Load exceeds 116% of rated payload.
Possible Causes
- Loading tool operator not observing payload lights. Material density high and loaded to maximum volume.
E2174-2 Parking Brake Switch Off At Inappropriate Time
This code is triggered if, on key start, the park brake solenoid is commanded to be engaged and the park brake switch is in the released position.
Possible Causes
- Park Brake not applied at startup
E2201-2 Transmission Slip Detected in First Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2202-2 Transmission Slip Detected in Second Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2203-2 Transmission Slip Detected in Third Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2204-2 Transmission Slip Detected in Fourth Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2205-2 Transmission Slip Detected in Fifth Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2206-2 Transmission Slip Detected in Sixth Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2207-2 Transmission Slip Detected in Seventh Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2208-2 Transmission Slip Detected in Eighth Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2209-2 Transmission Slip Detected in Ninth Forward Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2301-2 Transmission Slip Detected in First Reverse Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
E2302-2 Transmission Slip Detected in Second Reverse Gear
This event triggers when the input speed gear ratio does not result in an output speed close enough to the desired output speed, and the software has been unable to correct the slip.
Possible Causes
- Oil level is low
- One or more modulating valves for the ECPC may not be functioning correctly
- Clutch failure
- Clutch sealing leaking
Information for the Transmission
The following tables show the transmission shift matrix for a 740 (B1P) or a 740 Ejector (B1R) with a seven speed transmission. The same logic should be used when you are reading the table for all other Articulated Trucks with transmissions with different gear ranges.
| Shifts To | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | R | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |||
| Shifts From | N | --- | 357 | 1062 | 0 | 0 | 0 | 0 | 0 | 0 | |
| R | 949 | --- | 138 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 1 | 460 | 730 | --- | 1254 | 0 | 0 | 0 | 0 | 0 | ||
| 2 | 0 | 0 | 1209 | --- | 868 | 0 | 0 | 0 | 0 | ||
| 3 | 0 | 0 | 0 | 43 | --- | 631 | 0 | 0 | 0 | ||
| 4 | 0 | 0 | 0 | 0 | 814 | --- | 490 | 0 | 0 | ||
| 5 | 0 | 0 | 0 | 0 | 0 | 615 | --- | 459 | 0 | ||
| 6 | 0 | 0 | 0 | 0 | 0 | 3 | 487 | --- | 370 | ||
| 7 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 369 | --- | ||
Table 7 shows a normal matrix of changes in the gears that can be expected from a machine that is being operated in the correct manner. The matrix does not exhibit any faults.
The vertical axis of the matrix shows the initial gear position of the transmission shift. The horizontal axis of the matrix will show the final gear position of the transmission shift. For example, 814 transmission shifts from fourth gear to third gear were performed.
All the transmission shifts are from one gear to the next gear. The following examples are correct transmission shifts. A transmission shift from first gear to neutral gear or into reverse gear, A transmission shift from fifth gear to fourth gear and A transmission shift from sixth gear up to seventh gear. If a transmission shift from first gear to reverse gear is performed and the machine is still moving forward, an event code will be triggered.
| |
| Illustration 1 | g01084271 |
The table on illustration 1 shows a matrix of changes in the gears from a machine that is being operated incorrectly.
There are four areas of the transmission shift matrix that can indicate abuse or incorrect operation of the machine.
- Rapid Downshifting
- Abnormal Shifting
- Rapid Upshift
- Upshifting from Neutral or Reverse
Rapid Downshifting
| |
| Illustration 2 | g01084272 |
The table on illustration 2 is an example of heavy braking, rapid downshift which results in transmission abuse.
The high numbers 1517 and 420 are generated by the following sequence of events that are carried out by the machine operator. In the worst case, these numbers are generated on the shift matrix. However, the additional numbers that are highlighted in the table are also an indication of transmission abuse.
(1) The machine is at high speed in seventh gear and the operator applies the service brake.
(2) The transmission rapidly downshifts.
Reference: Systems Operation, Testing and Adjusting, RENR3442, "Articulated Trucks Power Train Electronic Control System", "Rapid Downshift Function"
Reference: Systems Operation, Testing and Adjusting, RENR8035, "Articulated Trucks Power Train Electronic Control System", "Rapid Downshift Function"
(3) At this point, the machine is stationary. The operator then selects neutral gear or reverse gear with the transmission control lever before releasing the service brake.
The rapid downshifting of the transmission is seen in the following list:
- Seventh gear to neutral gear. This event occurred on 1517 occasions.
- Seventh gear to reverse gear. This event occurred on 420 occasions.
- Seventh gear to first gear. This event occurred on 4 occasions.
- Seventh gear to third gear . This event occurred on 3 occasions.
- Sixth gear to neutral gear. This event occurred on 12 occasions.
- Sixth gear to reverse gear.This event occurred on 4 occasions.
- Sixth gear to first gear. This event occurred on 3 occasions.
- Sixth gear to second gear.This event occurred on 3 occasions.
- Fifth gear to neutral gear.This event occurred on 5 occasions.
- Fifth gear to reverse gear. This event occurred on 8 occasions.
These high figures are a result of heavy braking which will result in high brake temperatures, premature brake wear, and premature transmission failure.
Abnormal Shifting
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| Illustration 3 | g01084278 |
The table on illustration 3 is an example of abnormal transmission shifting due to the use of the brakes.
The high numbers 4169, 564, 27, 1185, 546, 87, 1649, 141, 28, 267, 38, 152, 23, 92, 1, 48 are generated by the following sequence of events that are carried out by the machine operator.
Situation 1
(1) The machine is moving forward in gear and the operator applies the service brake.
(2) The transmission rapidly downshifts.
Reference: Systems Operation, Testing and Adjusting, RENR3442, "Articulated Trucks Power Train Electronic Control System", "Rapid Downshift Function"
Reference: Systems Operation, Testing and Adjusting, RENR8035, "Articulated Trucks Power Train Electronic Control System", "Rapid Downshift Function"
(3) At this point, the machine is stationary. The operator then selects neutral gear, reverse gear, or a low gear with the transmission control lever before releasing the service brake.
Situation 2
The down shifting in this case can also be related with the rapid down shifting which has been described. The following actions may be a result of rapid downshifting and braking.
(1) The machine is moving forward in gear and the operator applies the service brake.
(2) The transmission rapidly downshifts.
(3) The operator is moving the transmission control lever to reverse gear, neutral gear, or a low gear. At the same time, the operator releases the service brake for more than half of a second.
The transmission will now log two shifts on the shift matrix. The first shift is the rapid downshift from a high gear to a point when the brakes are first released. The second shift would be the rapid downshift when the service brakes are reapplied. This action would also depend on the position of the lever for the transmission control before the brakes are released for the second time.
The rapid shifting of the transmission is seen in the following list:
- Second gear to neutral gear. This event occurred on 4169 occasions.
- Third gear to neutral gear. This event occurred on 564 occasions.
- Fourth gear to neutral gear. This event occurred on 27 occasions.
- Second gear to reverse gear. This event occurred on 1185 occasions.
- Third gear to reverse gear. This event occurred on 546 occasions.
- Fourth gear to reverse gear. This event occurred on 87 occasions.
- Third gear to first gear. This event occurred on 1649 occasions.
- Fourth gear to first gear. This event occurred on 141 occasions.
- Fifth gear to first gear. This event occurred on 28 occasions.
- Fourth gear to second gear. This event occurred on 267 occasions.
- Fifth gear to second gear. This event occurred on 38 occasions.
- Fifth gear to third gear. This event occurred on 152 occasions.
- Sixth gear to third gear. This event occurred on 23 occasions.
- Sixth gear to fourth gear. This event occurred on 92 occasions.
- seventh gear to fourth gear. This event occurred on 1 occasion.
- Seventh gear to fifth gear. This event occurred on 48 occasions.
These figures are a result of heavy braking which will result in high brake temperatures, premature brake wear, and premature transmission failure.
Rapid Upshift
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| Illustration 4 | g01084279 |
The table on illustration 4 is an example of rapid downshifting of the transmission which is caused by heavy braking. This, is followed by a rapid upshifting of the transmission.
Note: The transmission shift matrix will indicate a shift from neutral to top gear and back to neutral when you are carrying out a transmission stall test.
The numbers 2, 430, 1455 and 54 are generated by the following sequence of events that are carried out by the machine operator.
(1) The machine is at high speed and the operator applies the service brake. The wheels at this point may be locked.
(2) The transmission rapidly downshifts.
Reference: Systems Operation, Testing and Adjusting, RENR3442, "Articulated Trucks Power Train Electronic Control System", "Rapid Downshift Function"
Reference: Systems Operation, Testing and Adjusting, RENR8035, "Articulated Trucks Power Train Electronic Control System", "Rapid Downshift Function"
(3) The operator then releases the service brake.
(4) At this point, the machine is still moving forward at speed. The transmission has downshifted to a gear which is below the gear that is indicated by the ground speed sensor. Therefore, the transmission rapidly upshifts to seventh gear.
The rapid shifting of the transmission is seen in the following list:
- Rapid downshift to first gear back to seventh gear. This event occurred on 2 occasions.
- Rapid downshift to second gear back to seventh gear. This event occurred on 430 occasions.
- Rapid downshift to third gear back to seventh gear. This event occurred on 1455 occasions.
- Rapid downshift to fourth gear back to seventh gear. This event occurred on 54 occasions.
Upshifting from Neutral or Reverse
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| Illustration 5 | g01084280 |
The table on illustration 5 is an example of abnormal upshifting from neutral gear.
The numbers 5, 1, 2 are generated by the following sequence of events that are carried out by the machine operator.
Situation 1
(1) The machine is moving and coasting in neutral. Refer to "E049-2 Coasting in Neutral".
Note: An event code may not be recorded in certain cases.
(2) The operator moves the lever for the transmission control to the DRIVE position.
(3) Because the ground speed is greater than first gear, the transmission will upshift to a gear which is appropriate to the machine ground speed.
There could also be two situations when the machine is being loaded.
Situation 2
(1) The machine is being loaded on a steep slope.
(2) The operator selects the DRIVE position with the lever for the transmission control.
(3) When the parking brake is released the severity of the grade allows the machine to accelerate at a higher speed that is above an appropriate upshift. This, causes the machine to miss a gear.
Situation 3
(1) The machine is being loaded on a steep slope.
(2) The operator releases the parking brake without engaging the service brake. The machine then starts to move down the grade.
Note: An event code may not be recorded in certain cases.
(3) The operator selects the DRIVE position with the lever for the transmission control.
(4) The severity of the grade allows the machine to accelerate at a higher speed that is above an appropriate upshift. This action causes the transmission to go directly from neutral gear to a higher gear. The transmission will select the appropriate gear for the ground speed of the machine.
The upshifting from neutral of the transmission is seen in the following list:
- Neutral to second gear. This event occurred on 5 occasions.
- Neutral to third gear. This event occurred on 1 occasion.
- Neutral to fourth gear. This event occurred on 2 occasions.
- Reverse to second gear. This event occurred on 1 occasion.
Engine ECM Current Totals
The following list of totals are supported in different models of Articulated Trucks.
Total Fuel (Factory Password) Units - Liters/Gallons
This event is calculated as the total gallons/liters of fuel that is used when the engine speed is greater than 400 rpm.
Engine Starts (Factory Password) Unit - Start
This increments once for each time when the speed of the engine goes from 0 rpm to above 600 rpm.
Lifetime Total Engine Revolutions (Factory Password) Unit - Revolutions
This increment is based on the engine speed when the engine speed is greater than 400 rpm.
Total Idle Time (Factory Password) Unit - Hours
This increments time when the speed of the engine is between 550 rpm and 1150 rpm.
Total Idle Fuel (Factory Password) Unit - Gallons/Liters
This increments time when the speed of the engine is between 550 rpm and 1150 rpm.
Total Max Fuel (Factory Password) Unit - Gallons/Liters
This event is calculated as the total gallons/liters of fuel that would be used if the engine was at the rated speed of full load. The speed of the engine must be greater than 400 rpm.
Total Operating Hours (Read Only) Units - Hours
This increments time when the speed of the engine is greater than 400 rpm.
The following totals are calculated by using the previous totals.
Percentage Idle Time (Read Only) Units - Percent
This event is calculated as the total idle time which is divided by the total operating hours.
Average RPM (Read Only) Units - Revoplutions Per Minute
This event is calculated as the lifetime total revolutions which is divided by the total operating hours then is divided by 60 mins/hr.
Average Fuel Rate (Read Only) Units - Gallons/Hour or Liters/Hour
This event is calculated as the total fuel which is divided by the total operating hours.
Overall Load Factor (Read Only) Units - Percent
This event is calculated as the total fuel which is divided by the total max fuel.