Engine Control Module (ECM) Connector End Views
Engine Control Module (ECM) Terminal Identification - C1 Connector Part Information 12191489 80-Way F Micro-Pack 100W Sealed (BLU) Pin Wire Color Circuit No. Function 1 BLK/WHT 451 Ground 2 LT GRN 1867 12 Volt Reference 3 BLK 1744 Fuel Injector 1 Control 4 LT BLU/BLK 844 Fuel Injector 4 Control 5 TAN/WHT 332 Oil Pressure Sensor Signal 6 BRN 1456 EGR Vacuum Sensor Signal - w/California Emissions Only 7 YEL/BLK 975 5 Volt Reference 8 GRY 2705 5 Volt Reference 9 DK GRN 2362 SAE J1939 Serial Data Bus - 10 YEL 2361 SAE J1939 Serial Data Bus+ 11 - - Not Used 12 LT BLU/WHT 1869 CKP Sensor Signal 13 - 16 - - Not Used 17 YEL/BLK 508 Water In Fuel Indicator Control 18 DK BLU 84 Cruise Control Set/Coast Switch Signal 19 PNK 439 Ignition 1 Voltage 20 ORN 440 Battery Positive Voltage 21 YEL/BLK 1868 Low Reference 22 GRY/BLK 87 Cruise Control Resume/Accel Switch Signal 23-24 - - Not Used 25 ORN/BLK 469 Low Reference 26 -28 - - Not Used 29 TAN 986 Intake Heater Diag 1 30 LT GRN 1478 Coolant Level Switch Signal 31 - - Not Used 32 BRN 2524 Generator 2 Turn On Signal 33 PPL 806 Crank Voltage 34 ORN/BLK 1786 Park/Neutral Signal 35 GRY 48 CPP Switch Signal 36 LT GRN/BLK 1745 Fuel Injector 2 Control 37 BLU/WHT 845 Fuel Injector 5 Control 38 -39 - - Not Used 40 BLK/WHT 451 Ground 41 BRN 971 Low Reference 42 - - Not Used 43 DK BLU/WHT 878 Fuel Injector 8 Control 44 PNK/BLK 1746 Fuel Injector 3 Control 45 TAN 1274 5 Volt Reference 46 WHT/BLK 2932 5 Volt Reference 47 WHT/BLK 1164 5 Volt Reference 48 TAN 2917 5 Volt Reference 49 -51 - - Not Used 52 LT BLU 506 Glow Plug Signal 53 - - Not Used 54 PPL 1272 Low Reference 55 LT BLU 1162 APP Sensor 2 Signal 56 - - Not Used 57 ORN 440 Battery Positive Voltage 58 DK GRN 1049 Class 2 Serial Data 59 YEL 710 Class 2 Serial Data 60 - - Not Used 61 PNK/BLK 632 Low Reference 62 LT GRN 1324 Backup Lamp Supply Voltage 63 - - Not Used 64 BLK 552 Low Reference 65 GRY 1273 Low Reference 66 -69 - - Not Used 70 BRN 1174 Oil Level Switch Signal 71 LT GRN 488 PTO Enable 72 - - Not Used 73 BRN/WHT 633 CMP Sensor Signal 74 YEL 410 ECT Sensor Signal 75 PNK 1020 Off/Run/Crank Voltage 76 YEL/BLK 846 Fuel Injector 6 Control 77 RED/BLK 877 Fuel Injector 7 Control 78 PPL 985 IA Heater Relay Control 79 GRY/BLK 2219 FICM Relay Control 80 GRY 720 Low Reference
Engine Control Module (ECM) Terminal Identification - C2 Connector Part Information 12191488 80-Way F Micro-Pack 100W Sealed (CLR) Pin Wire Color Circuit No. Function 1 BLK/WHT 451 Ground 2 WHT 257 EGR Valve Vacuum Solenoid Control - w/California Emissions Only 3-5 - - Not Used 6 YEL 505 Glow Plug Relay Control 7 -8 - - Not Used 9 DK GRN/WHT 465 Fuel Pump Relay Control 10 WHT 121 Engine Speed Signal 11 DK BLU 604 A/C High Pressure Recirculation Switch Signal 12 DK GRN 1163 APP Sensor 3 Signal 13 YEL 2522 PTO Feedback Status 14 LT GRN 432 Boost Sensor Signal 15 BRN 25 Charge Indicator Control 16 GRY 397 Cruise Control On Switch Signal 17 DK GRN/WHT 2523 A/C Request Signal 18 LT BLU 1320 CHMSL Supply Voltage 19 BLK/WHT 1695 Axle Switch Signal 20 LT GRN/BLK 822 VSS Low Signal (Except Allison 21 PPL/WHT 821 VSS High Signal (except Allison) YEL 400 Signal High - Front - Allison Transmission 22 - - Not Used 23 ORN/BLK 2919 Low Reference 24 DK BLU 1161 APP Sensor 1 Signal 25 YEL 1578 Fuel Temperature Signal 26 -28 - - Not Used 29 GRY 597 5 Volt Reference 30 -32 - - Not Used 33 DK GRN 1614 Recirculation Door Control 34 DK GRN/WHT 459 A/C Compressor Clutch Relay Control 35 PNK/WHT 1101 Damping Lift/Dive Signal 36 DK BLU 507 Wait to Start Indicator Control 37 PPL 2562 PTO Engage Signal 38 - - Not Used 39 RED 631 12 Volt Reference 40 BLK/WHT 451 Ground 41 GRY/BLK 2931 Low Reference 42 PPL/WHT 2530 Fuel Pressure Regulator Solenoid Supply Voltage 43 - - Not Used 44 PNK 1039 Ignition 1 Voltage 45 - - Not Used 46 BRN/WHT 419 MIL Control 47 DK GRN/WHT 428 EGR Throttle Valve Vacuum Solenoid Control - w/California Emissions Only 48 WHT 1310 EGR Vacuum Vent Solenoid Control - w/California Emissions Only 49 YEL/BLK 1827 Vehicle Speed Signal 50 DK GRN/WHT 817 Vehicle Speed Signal 51 TAN 472 IAT Sensor Signal 52 GRY 23 Generator Field Duty Cycle Signal 53 DK BLU 2687 TCM MIL Request 54 PPL/WHT 1589 Fuel Level Sensor Signal - Primary 55 DK GRN 603 A/C Low Pressure Switch Signal 56 LT BLU 494 PTO Engine Disable 57 ORN/BLK 510 Low Reference 58 YEL 2918 FRP Sensor Signal 59 PPL 420 TCC Brake Switch/Cruise Control Release Signal 60 BRN 718 Low Reference 61 - - Not Used 62 TAN 986 Intake Heater Diag 2 63 GRY/BLK 1694 4WD Low Signal 64 GRY/BLK 433 BARO Sensor Signal 65 YEL 492 MAF Sensor Signal 66 -72 - - Not Used 73 DK BLU 1936 Fuel Level Sensor Signal - Secondary 74-75 - - Not Used 76 LT BLU 2832 Engine Speed Signal 77 YEL 2834 Fuel Pressure Regulator Solenoid Control 78 ORN/BLK 1057 Low Reference 79 -80 - - Not Used
Engine Controls Connector End Views
Accelerator Pedal Position (APP) Sensor Terminal Identification Connector Part Information 15318071 10-Way F Metri-pack 150 Series (GRY) Pin Wire Color Circuit No. Function A GRY 1273 Low Reference B PPL 1272 Low Reference C LT BLU 1162 APP Sensor 2 Signal D TAN 1274 5 Volt Reference E BRN 971 Low Reference F DK BLU 1161 APP Sensor 1 Signal G WHT/BLK 1164 5 Volt Reference H - - Not Used J YEL/BLK 975 5 Volt Reference K DK GRN 1163 APP Sensor 3 Signal
BARO Sensor Terminal Identification Connector Part Information 12129946 3-Way F M/P 150 Series Sealed (GRY) Pin Wire Color Circuit No. Function A ORN/BLK 1057 Low Reference B GRY/BLK 433 BARO Sensor Signal C WHT/BLK 2932 5 Volt Reference
Camshaft Position (CMP) Sensor Terminal Identification Connector Part Information 12129946 3-Way F 150 Series Sealed (GRY) Pin Wire Color Circuit No. Function A RED 631 12 Volt Reference B PNK/BLK 632 Low Reference C BRN/WHT 633 CMP Sensor Signal
Coolant Level Switch Terminal Identification Connector Part Information 15324243 2-Way F M/P 150 Series Sealed (GRY) Pin Wire Color Circuit No. Function A LT GRN 1478 Coolant Level Switch Signal B BLK 550 Ground
Crankshaft Position (CKP) Sensor Terminal Identification Connector Part Information 12129946 3-Way F 150 Series Sealed (GRY) Pin Wire Color Circuit No. Function A LT GRN 1867 12 Volt Reference B YEL/BLK 1868 Low Reference C DK BLU/WHT 1869 CKP Sensor Signal
Engine Coolant Temperature (ECT) Sensor Terminal Identification Connector Part Information 12162195 2-Way F SER 150.2 Series Sealed (BLK) Pin Wire Color Circuit No. Function A GRY 720 Low Reference B YEL 410 ECT Sensor Signal
Fuel Injection Control Module (FICM) Connector Terminal Identification - C1 Connector Part Information 1928403454 81 Way F Bosch Series (BLK) Pin Wire Color Circuit No. Function 1 LT GRN/WHT - Fuel Injector 4 Command 2 BLK - Ground 3 ORN/BLK - Ignition Voltage 4 LT GRN/RED - Fuel Injector 1 Command 5 PNK 1239 Ignition 1 Voltage 6-43 - - Not Used 44 LT BLU/BLK 844 Fuel Injector 4 Control 45 BLU/WHT 845 Fuel Injector 5 Control 46 - - Not Used 47 PNK/BLK 1746 Fuel Injector 3 Control 48 RED/BLK 877 Fuel Injector 7 Control 49-58 - - Not Used 59 LT GRN/PPL - Fuel Injector 6 Command 60 LT GRN/PPL - Fuel Injector 6 Command 61 LT GRN/ORN - Fuel Injector 7 Command 62 LT GRN/ORN - Fuel Injector 7 Command 63 DK BLU/WHT 878 Fuel Injector 8 Control 64 YEL/BLK 846 Fuel Injector 6 Control 65 - - Not Used 66 BLK 1744 Fuel Injector 1 Control 67 LT GRN/BLK 1745 Fuel Injector 2 Control 68-81 - - Not Used
Fuel Injection Control Module (FICM) Connector Terminal Identification - C2 Connector Part Information 1928403462 40 Way F Bosch Series (BLK) Pin Wire Color Circuit No. Function 82-89 - - Not Used 90 DK GRN 2362 CAN Serial Data Low 91 YEL 2361 CAN Serial Data High 92-93 - - Not Used 94 LT BLU 2832 Engine Speed Signal 95-113 - - Not Used 114 - - Ground 115 LT GRN/BLK - Fuel Injector 3 Command 116 LT GRN/RED - Fuel Injector 5 Command 117 - - Not Used 118 ORN/WHT - Ignition Voltage 119 PNK 1239 Ignition Voltage 120 LT GRN/GRN - Fuel Injector 8 Command 121 LT GRN - Fuel Injector 2 Command
Scheme 272
Fuel Injector 1, 3 Terminal Identification Connector Part Information 15326632 4-Way F GT 280 Series Sealed (BLK) Pin Wire Color Circuit No. Function A ORN/BLK - Ignition Voltage B LT GRN/BLK - Fuel Injector 1 Control C ORN/WHT - Ignition Voltage D LT GRN/BLK - Fuel Injector 3 Control
Fuel Injector 2, 4 Terminal Identification Connector Part Information 15326632 4-Way F GT 280 Series Sealed (BLK) Pin Wire Color Circuit No. Function A ORN/BLK - Ignition Voltage B LT GRN/WHT - Fuel Injector 4 Control C ORN/WHT - Ignition Voltage D LT GRN - Fuel Injector 2 Control
Fuel Injector 5, 7 Terminal Identification Connector Part Information 15326632 4-Way F GT 280 Series Sealed (BLK) Pin Wire Color Circuit No. Function A ORN/WHT - Ignition Voltage B LT GRN/RED - Fuel Injector 5 Control C ORN/BLK - Ignition Voltage D LT GRN/ORN - Fuel Injector 7 Control
Fuel Injector 6, 8 Terminal Identification Connector Part Information 15326632 4-Way F GT 280 Series Sealed (BLK) Pin Wire Color Circuit No. Function A ORN/WHT - Ignition Voltage B LT GRN/GRN - Fuel Injector 8 Control C ORN/BLK - Ignition Voltage D LT GRN/PPL - Fuel Injector 6 Control
Fuel Pump Terminal Identification Connector Part Information 12059450 2-Way M Metri-pack 280 Series Sealed (BLK) Pin Wire Color Circuit No. Function A GRY 120 Fuel Pump Supply Voltage B BLK 1650 Ground (20 Series) BLK 2150 Ground (30 Series)
Fuel Level Sensor Terminal Identification - Primary Connector Part Information 12160563 2-Way F Metri-pack 150 Series Sealed (NAT) Pin Wire Color Circuit No. Function A PPL 1589 Fuel Level Sensor Signal - Primary D ORN/BLK 510 Low Reference
Fuel Level Sensor Terminal Identification - Secondary Connector Part Information 12160563 2-Way F Metri-pack 150 Series Sealed (NAT) Pin Wire Color Circuit No. Function A DK BLU 1936 Fuel Level Sensor Signal - Secondary D ORN/BLK 510 Low Reference
Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Terminal Identification Connector Part Information 15324447 5-Way F 090II SLD (BLK) Pin Wire Color Circuit No. Function 1 BLK 552 Low Reference 2 TAN 472 IAT Sensor Signal 3 PNK 239 Ignition 1 Voltage 4 GRY/BLK 2931 Low Reference 5 YEL 492 MAF Sensor Signal
Park/Neutral Position Switch Terminal Identification - C1 Connector Part Information 12191757 4-Way F Metri-pack 150 (LT GRY) Pin Wire Color Circuit No. Function A BLK/WHT 771 Transmission Range Switch Signal A B GRY 773 Transmission Range Switch Signal C C WHT 776 Transmission Range Switch Signal P D YEL 772 Transmission Range Switch Signal B
Park/Neutral Position Switch Terminal Identification - C2 Connector Part Information 12129840 7-Way F Metri-pack 150 280 (MD GRY) Pin Wire Color Circuit No. Function A ORN/BLK 1786 Park/Neutral - Signal B LT GRN 275 Park Neutral Position Switch Park Signal C PNK 839 Ignition 1 Voltage D BLK/WHT 451 Ground E PPL/WHT 1035 Starter Relay Coil Supply Voltage F LT GRN 24 Backup Lamp Supply Voltage G YEL 1737 Neutral Safety Switch Park/Neutral Signal
Wiring Harness Service
The control module harness electrically connects the control module to the various solenoids, switches, and sensors in the vehicle engine compartment and passenger compartment.
Replace the wire harnesses with the proper part number replacement. When splicing signal wires into a harness, use the wiring that has high temperature insulation.
Consider the low amperage and voltage levels utilized in the powertrain control systems. Make the best possible bond at all splices. Use rosin-core solder in these areas.
Molded-on connectors require complete replacement of the connector. Splice a new connector into the harness. Replacement connectors and terminals are listed in Group 8.965 in the Standard Parts Catalog.
For wiring repair, refer to Wiring Repairs in Wiring Systems.