Electrical Connectors
Connectors for the Electronic Control Module (ECM)
Show/hide table
| |
| Illustration 1 | g06094616 |
|
(1) ECM harness connector (engine side)
(2) ECM connector (engine side) (3) ECM connector (machine side) (4) ECM harness connector (machine side) | |
The engine ECM has two 56 pin connectors. The right connector (1) is the engine harness connector "P2/J2". The engine harness connector can also be identified by having a blue interface. The left connector (4) is the machine harness connector "P1/J1". The machine harness connector can also be identified by having a gray interface.
Show/hide table
| |
| Illustration 2 | g06114135 |
|
P1/J1 Machine Connector (gray interface) | |
Show/hide table
| |
| Illustration 3 | g06114141 |
|
P2/J2 Engine Connector (blue interface) | |
The engine harness connectors are not standard Deutsch connectors. Refer to Special Instruction, REHS7774 for more information on a jumper harness, if a connector requires repair.
Intake Throttle Valve Connector (Six Pin)
Show/hide table
| |
| Illustration 4 | g03166596 |
Show/hide table
| Connector Terminal1 to ECM E1-44 | Ground |
| Connector Terminal 2 to ECM E1-20 | Intake Position Sensor Signal |
| Connector Terminal 3 to ECM E1-15 | Intake Position Sensor (5V) |
| Connector Terminal 4 | Not Used |
| Connector Terminal 5 to ECM E1-23 | Throttle Valve Motor (+) |
| Connector Terminal 6 to ECM E1-24 | Throttle Valve Motor (-) |
Camshaft Position Sensor (Three Pin)
Show/hide table
| |
| Illustration 5 | g03166859 |
Show/hide table
| Connector Terminal 1 to ECM E1-43 | Ground (-) |
| Connector Terminal 2 to ECM E1-42 | Signal (+) |
| Connector Terminal 3 to ECM E1-3 | 5 V |
Crankshaft Position Sensor (Three Pin)
Show/hide table
| |
| Illustration 6 | g06094640 |
Show/hide table
| Connector Terminal 1 to ECM E1-40 | Ground |
| Connector Terminal 2 to ECM E1-41 | Signal (+) |
| Connector Terminal 3 to ECM E1-2 | 5 V |
Show/hide table
| |
| Illustration 7 | g03166879 |
Show/hide table
| Connector Terminal 1 to ECM V2-32 | CAN Hi (+) |
| Connector Terminal 2 to ECM V2-43 | CAN Low (-) |
| Connector Terminal 3 to ECM V2-51, 52, 54 | Ground |
| Connector Terminal 4 to ECM V2-53, 55, 56 | Battery |
Fuel Rail Pressure Sensor (Three Pin)
Show/hide table
| |
| Illustration 8 | g06094644 |
Show/hide table
| Connector Terminal 1 to ECM E1-1 | Ground |
| Connector Terminal 2 to ECM E1-28 | Signal |
| Connector Terminal 3 to ECM E1-29 | 5V |
Suction Control Valve (Two Pin)
Show/hide table
| |
| Illustration 9 | g06094678 |
Show/hide table
| Connector Terminal 1 to ECM E1-11 | Suction Valve (-) |
| Connector Terminal 2 to ECM E1-12 | Suction Valve (+) |
Coolant Temperature Sensor (Two Pin)
Show/hide table
| |
| Illustration 10 | g06094741 |
Show/hide table
| Connector Terminal 1 to ECM E1-19 | Signal |
| Connector Terminal 2 to ECM E1-37 | Ground |
Show/hide table
| |
| Illustration 11 | g06094743 |
Show/hide table
| Cylinder Number | Circuit | Injector Terminal | ECM E1 Pin Locations |
| 1 | Ground | 1 | 56 |
| 110 V | 2 | 53 | |
| 2 | Ground | 1 | 49 |
| 110 V | 2 | 52 | |
| 3 | Ground | 1 | 50 |
| 110 V | 2 | 51 | |
| 4 | Ground | 1 | 55 |
| 110 V | 2 | 54 |
Mass Air Flow Sensor (Five Pin)
Show/hide table
| |
| Illustration 12 | g03168976 |
Show/hide table
| Connector Terminal 1 to ECM V2- 53, 55, 56 | 12V |
| Connector Terminal 2 to ECM V2-3 | Ground |
| Connector Terminal 3 to ECM V2-5 | Signal |
| Connector Terminal 4 to ECM V2-4 | Intake Temp Sensor (Signal) |
| Connector Terminal 5 to ECM V2-3 | Intake Temp Sensor (Ground) |
DPF Differential Pressure Sensor (Three Pin)
Show/hide table
| |
| Illustration 13 | g06094750 |
Show/hide table
| Connector Terminal 1 to ECM E1-15 | Voltage |
| Connector Terminal 2 to ECM E1-4 | Ground |
| Connector Terminal 3 to ECM E1-30 | Signal |
DOC Inlet Temperature Sensor (T0) (Two Pin)
Show/hide table
| |
| Illustration 14 | g03169177 |
Show/hide table
| Connector Terminal 1 to ECM E1-7 | Signal |
| Connector Terminal 2 to ECM E1-4 | Ground |
DPF Inlet Temperature Sensor (T1) (Two Pin)
Show/hide table
| |
| Illustration 15 | g03169277 |
Show/hide table
| Connector Terminal 1 to ECM E1-6 | Signal |
| Connector Terminal 2 to ECM E1-4 | Ground |
DPF Outlet Temperature Sensor (T2) (Two Pin)
Show/hide table
| |
| Illustration 16 | g03169316 |
Show/hide table
| Connector Terminal 1 to ECM E1-39 | Signal |
| Connector Terminal 2 to ECM E1-4 | Ground |
Caterpillar Information System:
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Diagnostic Capabilities
C9 Marine Generator Set Overhaul (Major)
C13 Engines for Caterpillar Built Machines Fuel Temperature Is High
C13 Engines for Caterpillar Built Machines Engine Overspeeds
C175-16 and C175-20 Locomotive Engines Auxiliary Water Pump - Install
C11, C13, C15, and C18 Industrial Engines Coolant Temperature Is High
C175-16 and C175-20 Locomotive Engines Auxiliary Water Pump - Remove
C13 Engines for Caterpillar Built Machines Oil Pressure Is Low
C175-16 and C175-20 Locomotive Engines Engine Oil Cooler - Install
C175-16 and C175-20 Locomotive Engines Engine Oil Cooler - Remove
C7.1 Marine Propulsion Engine Refill Capacities
C13 Engines for Caterpillar Built Machines Fuel Pressure Is High
C11, C13, C15, and C18 Industrial Engines Symptom Troubleshooting
C175-16 and C175-20 Locomotive Engines Crankshaft Main Bearings - Remove
C11, C13, C15, and C18 Industrial Engines Intake Manifold Air Temperature Is High
C13 Engines for Caterpillar Built Machines Coolant Level Is Low
C175-16 and C175-20 Locomotive Engines Engine Oil Filter Housing - Install
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Acceleration Is Poor or Throttle Response Is Poor
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Alternator Problem - Charging Problem and/or Noisy Operation
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Coolant Level Is Low
New Software Is Now Available for Cat® Product Link {7606, 7610, 7620} New Software Is Now Available for Cat® Product Link {7606, 7610, 7620}
323F SA and 323F LN Excavator Diesel Exhaust Fluid Filter - Replace
G3500B Engines Fuel System Operation
C175-20 Locomotive Engine Plate Locations and Film Locations