Usage:
3176B (9CK),
C-10 (2PN),
C-12 (1YN),
3406E (5EK) Truck Engines
Description of Change: The following is a list of changes and new or modified features to the electronic hardware and software for the above truck engines.
Adaptable To: The changes and features are effective with 3176B (9CK27628), C-10 (2PN01085), C-12 (1YN01275), and 3406E (5EK67193) Truck Engines.
Electronic Hardware Changes
Electronic Control Module Changes
There are two new Electronic Control Modules (ECM's). The 117-4017 ECM is the standard ECM and is installed on most of the engines built. The 118-7631 ECM contains additional circuitry to support the SAE J1939 Data Link which is required by some transmission control, traction control, and/or ABS systems. Both ECM's are backwards compatible to first production engines, but only the 118-7631 is available to service all 3176B, C-10, C-12, and 3406E engines. The following changes are incorporated into the new ECM's:
*The personality module cover has been eliminated. Programming of the new ECM's can be accomplished solely by Flash programming, no Service Replacement (removeable personality modules) parts are available.
NOTE: The 117-4017 or 118-7631 ECM's no longer have removeable covers. Refer to the Truck Engine News article titled, "Personality Module Covers On Electronic Control Modules (ECM'S)" in this issue.
*The current capability of the three output drivers has been increased from 0.3 Amps to 1.5 Amps. The output driver on ECM connector J1/P1 pin-28 can now be used to drive a cooling fan relay or drive the cooling fan solenoid air valve directly. The output drivers on ECM connector J1/P1 pin-40 (previously Auxiliary Retarder) and J1/P1 pin-34 (previously unused), are also 1.5 Amp drivers and have been redesignated as Multi-function Outputs number 2 and number 3 respectively. The two Multi-function Outputs are programmable and can be used to control an Auxiliary Brake, Starter Lockout Relay, or a Vehicle Electrical System Shutdown relay.
*A lithium battery has been added to preserve trip and snapshot data when the ECM has been disconnected from the vehicle batteries. The lithium battery is designed to provide backup power for the life of the engine. However, this battery is not serviceable and connection of the Unswitched Battery Line to the ECM connector P1/J1 pin-4 is still required to prevent premature discharge.
*A real time clock has been added to date and time-stamp snapshot data and critical events. The clock can be set using an electronic service tool.
*The Vehicle Speed Circuitry has been modified. The vehicle speed signal no longer "loops" through the engine harness. The P24/J24 connection will be used solely for timing calibration.
Engine Harness Changes
*As mentioned before, the Vehicle Speed Signal no longer "loops" through the P24/J24 connector. Timing calibration will still be performed by connecting the timing probe to the P24 connector.
*3406E ONLY: The J5 Connector that was located on the valve cover base between cylinders 4 and 5 has been moved to a location on the valve cover base between Cylinders 2 and 3. (See drawing below).
*3406E ONLY: The location of the Boost Sensor has been changed (see drawing below). Note the new location of the P3/J3 connector.
P3/J3 (1), Inlet Manifold Pressure Sensor (boost) (2), Unit Injector (J5/P5) (3).
Description of November 1995 (NOV95) Personality Module Changes
The following is a list of new features and changes for the latest personality module release on 3176B, C-10, C-12, and 3406E Truck Engines. The personality module can be identified by release date "NOV95" using an electronic service tool. Electronic Technician (ET), Version 1.4 or Electronic Control Analyzer And Programmer (ECAP), Service Program Module (SPM), NEXG4522, Version 1.8 must be installed to use the new Customer Programmable Parameters. A list of the NOV95 service personality modules and FLASH files can be obtained using the Caterpillar FIND system (Search Document Types: FLASH; Keyword: 3176B OR C-10 OR C-12 OR 3406E. The NOV95 personality module is factory installed on truck engines effective with 3176B 9CK27628, C-10 2PN01085, C-12 1YN01275, and 3406E 5EK67193. When updating older engines with the NOV95 personality module, explain the new features and changes to the customer so they can make the correct programming choices for their particular operation.
Starter Lockout
This feature is designed to prevent cranking while the engine is running. This feature can be enabled using an electronic service tool to program either Multi-function Output number 2 (J1 pin-40) or Multi-function Output number 3 (J1 pin-34) to "Engine Running Output". Additional OEM wiring is required.
Temperature Based Idle Shutdown
This feature allows the Idle Shutdown timeout to be overridden if the outside air temperature is outside the temperature range programmed into the ECM. Two new Customer Programmable Parameters (Minimum Idle Shutdown Temperature and Maximum Idle Shutdown Temperature), can be used to set the temperature range. This allows continuous idling when outside air temperatures create the need for cab heating or cooling. (See graphic below). An additional Temperature Sensor Kit (133-0659) to measure the outside air temperature is required.
Outside air temperature illustration (A) equals 49°C (120°F), (B) shows programmed maximum idle shutdown temperature. When the outside air temperature is between points (A) and (B), engine shutdown can be overridden. (C) shows programmed minimum idle shutdown temperature. When the outside air temperature is between points (B) and (C), engine shutdown cannot be overridden. (D) equals -40°C (-40°F). When outside air temperature is between points (C) and (D), engine shutdown can be overridden.
Extended Range Idle Shutdown
The maximum programmable idle time has been increased from 60 minutes (1 hour) to 1440 minutes (24 hours).
Idle Shutdown in Dedicated PTO Mode
A second Idle Shutdown timer has been added to provide for idle shutdown while in Dedicated PTO Mode. The timer can be programmed up to a maximum time of 1440 minutes (24 hours).
Vehicle Electrical System Shutdown
This feature provides an output to turn portions of the truck's electrical system off after a shutdown occurrence. Additional OEM wiring is required. This will reduce the chance of accidental truck battery discharge when accessories such as headlights are left on after an idle shutdown occurrence. Programming Multi Function Output number 2 or number 3 to "Shutdown Output" will enable this feature.
Real Time Clock/Date
The new ECM (117-4017 or 118-7631) has a real time clock. The NOV95 software utilizes this feature to "time stamp" Critical Events and Snapshot data.
Inferred Oil Temperature
The NOV95 software calculates an engine oil-to-bearing temperature and provides that information to OEM electronic dash displays. This information cannot be viewed using an electronic service tool or Caterpillar ID.
Low Vehicle Speed Kickout for Engine Retarder
This Customer Programmable Parameter determines the lowest vehicle speed that the engine retarder can be active. The parameter range is 0 to 204 km/h (0 to 127 mph), the default is 0 km/h (0 mph).
Quick Stop Recorder
With this feature, the ECM will log an event code for sudden vehicle stops. A Customer Programmable Parameter (Quick Stop Rate) will be used to program a deceleration rate from 0 to 24 km/h/s (0 to 15 mph/s). Quick-Stop events will not be logged at vehicle speeds less than 32 km/h (20 mph). A starting point is 11 km/h/s (7mph/s) however, deceleration rates are load dependent and some experimentation may be necessary to determine the optimum value to program into the ECM. Snapshot data will be taken when Quick-Stop events occur.
Fan Control Type
This is an added Customer Programmable Parameter that allows the customer to indicate what controls the operation of the fan. Programming this parameter to ON-OFF indicates that the ECM will control the fan (provided that the ECM fan driver is wired to the fan solenoid). When the parameter is programmed to NONE, the fan is controlled by OEM installed devices and the electronic service tool status for the Fan Driver will now show "Not Available" instead of "ON" or "OFF."
Auto Retarder In Cruise Increment
When using the Auto Retarder In Cruise feature, the Auto Retarder In Cruise Incremnet parameter can be programmed to determine the vehicle speed increments between the Low to Medium, and Medium to High retarder levels. The parameter can be programmed from 0 to 8 Km/h (0 to 5 mph) [default is 3 Km/h (2 mph)]. If the parameter is programmed to 0 Km/h (0 mph), the retarder will come on at the High level when the vehicle speed exceeds the cruise set speed by the amount specified by the Auto Retarder In Cruise parameter.
Cruise Above Vehicle Speed Limit
The High Cruise Control Speed Set Limit parameter can now be programmed to a vehicle speed higher than the Vehicle Speed Limit. The vehicle speed limit can be exceeded by setting the cruise set speed to the vehicle speed limit and using the ACCEL switch to "bump"the cruise set speed above the vehicle speed limit.
J1939 Data Link (Optional)
The NOV95 software supports J1939 data link communications between the ECM and the transmission or other drive train components. (The 118-7631 ECM is required).
Disable Fuel Temperature Power Correction
The fuel temperature power correction can be temporarily disabled with an electronic service tool for dynamometer testing.
PTO Vehicle Speed Limit
This new Customer Programmable Parameter can be used to set the vehicle speed at which the Dedicated PTO Mode would be disabled. The parameter range is 0 to 204 Km/h (0 to 127 mph). The Idle/PTO Vehicle Speed Limit parameter (which was used for the Dedicated PTO and Idle vehicle speed limits), has been changed to Idle Vehicle Speed Limit (which is used solely for the Idle vehicle speed limit). The Idle Vehicle Speed Limit parameter range remains at 0 to 24 Km/h (0 to 15 mph).
