For 1990-2009 cars

### Powertrain Control Module (PCM) Connector C1

Connector Part Information |

• | 12129025

• | 32 - Way F Micro - Pack 100 Series (Black)

Pin | Wire Color | Circuit No. | Function | Component Connector Cavity | DTC(s) Affected | Possible Symptoms From a Faulty Circuit
--- | --- | --- | --- | --- | --- | ---
C1-01 | GRY | 435 | EGR Control | EGR A | P0401, P1406 | Runs Rough, Spark Knock
C1-02 | PNK/BLK | 1746 | Injector Driver 3 | Injector Harness D | P0200 (3), P0303 | Runs Rough, Lack of Performance, Hard Start
C1-03 | PNK | 1020 | Ignition Feed #1 | PRNDL Fuse | -- | No IPC
C1-04 | -- | -- | -- | -- | -- | --
C1-05 | PNK | 439 | EGR Ignition Feed | EGR E | P0401, P1406 | Runs Rough, Spark Knock
C1-06 | DK BLU | 417 | TP Sensor Signal | TP C | P0122 (3), P0123 | Hesitation
C1-07 | LT BLU/BLK | 844 | Injector Driver 4 | Injector Harness E | -- | Runs Rough, Lack of Power, Hard Start
C1-08 | YEL | 410 | ECT Signal | ECT B | P0117 (2), P0118 | Lack of Performance, Hard Start
C1-09 | LT GRN | 432 | MAP Signal | MAP B | P0107 (3), P0108 | Exhaust Odor, Poor Performance
C1-10 | -- | -- | -- | -- | -- | --
C1-11 | -- | -- | -- | -- | -- | --
C1-12 | DK GRN/WHT | 465 | Fuel Pump Relay Control | Fuel Pump Relay Term 85 | -- | Extended Crank Time
C1-13 | PPL | 412 | O2S 1 Signal | O2S 1 | P0131 (2), P0132, P0134 (1) | Exhaust Odor, Poor Performance
C1-14 | TAN | 413 | O2S 1 Ref Low | Engine Ground | P0134 (1) | Exhaust Odor, Poor Performance
C1-15 | PPL/WHT | 1668 | HO2S 2 High | HO2S 2 Harness B | P0138, P0140 | --
C1-16 | TAN/WHT | 1669 | HO2S 2 Ref Low | HO2S 2 Harness A | P0140 | --
C1-17 | -- | -- | -- | -- | -- | --
C1-18 | -- | -- | -- | -- | -- | --
C1-19 | -- | -- | -- | -- | -- | --
C1-20 | YEL | 772 | PRNDL B | Trans Sel Switch B | P0705 (3) | No PRNDL Display
C1-21 | GRY | 773 | PRNDL C | Trans Sel Switch C | P0705 (3) | No PRNDL Display
C1-22 | BRN | 1456 | EGR Signal | EGR C | P0401, P1406 | Runs Rough, Spark Knock
C1-23 | -- | -- | -- | -- | -- | --
C1-24 | RED | 631 | Camshaft Position (CMP) Sensor Feed | CMP C | P0342 | --
C1-25 | PNK/BLK | 632 | Camshaft Position (CMP) Sensor Ground | CMP B | P0342 | --
C1-26 | -- | -- | -- | -- | -- | --
C1-27 | GRY | 23 | F Field Signal | Gen Term C | -- | GEN Lamp ON
C1-28 | -- | -- | -- | -- | -- | --
C1-29 | RED/BLK | 380 | A/C Refrigerant Pressure Sensor Signal | A/C Ref Press Sen C | P0530 | A/C Inoperative
C1-30 | TAN | 472 | IAT Sensor Signal | IAT B | P0112, P0113 | --
C1-31 | -- | -- | -- | -- | -- | --
C1-32 | -- | -- | -- | -- | -- | --
(1) Open Circuit (2) Grounded Circuit (3) Open/ Grounded Circuit

### Powertrain Control Module (PCM) Connector C2

Connector Part Information |

• | 12129025

• | 32 - Way F Micro - Pack 100 Series (Gray or Clear)

Pin | Wire Color | Circuit No. | Function | Component Connector Cavity | DTC(s) Affected | Possible Symptoms From a Faulty Circuit
--- | --- | --- | --- | --- | --- | ---
C2-01 | BLK/WHT | 451 | PCM Ground | Engine Ground | -- | --
C2-02 | PNK | 639 | Ignition Feed #2 | PCM Fuse | -- | Cranks But Will Not Run
C2-03 | ORN | 480 | Battery Feed (B+) | PCM/BATT Fuse (relay center) | -- | Cranks But Will Not Run
C2-04 | LT GRN/BLK | 444 | IAC B Low | IAC A | P0506, P0507 | Incorrect Idle, Surges
C2-05 | LT BLU/BLK | 1748 | IAC A Low | IAC C | P0506, P0507 | Incorrect Idle, Surges
C2-06 | LT BLU/WHT | 1747 | IAC A High | IAC D | P0506, P0507 | Incorrect Idle, Surges
C2-07 | LT GRN/WHT | 1749 | IAC B High | IAC B | P0506, P0507 | Incorrect Idle, Surges
C2-08 | TAN | 31 | Oil Pressure Signal | Fuel Pump and Engine Oil Indicator Switch A | -- | --
C2-09 | YEL/BLK | 68 | Coolant Signal | Coolant Switch A | -- | Coolant Level Lamp ON (2)
C2-10 | BLK | 1744 | Injector Driver 1 | Injector Harness B | P0200, P0301 | Rough Idle, Lack of Performance, Hard to Start
C2-11 | LT GRN/BLK | 1745 | Injector Driver 2 | Injector Harness C | P0200, P0302 | Rough Idle, Lack of Performance, Hard to Start
C2-12 | ORN/BLK | 1057 | A/C, ECT, MAP, Fuel Tank Vapor Pressure Sensors Ground | A/C A, ECT A, MAP A, Vapor Sensor C1 | P0108, P0118, P0440, P0442, P0446, P1441 | Exhaust Odor, Surges on acceleration
C2-13 | GRY | 705 | A/C, MAP, Fuel Tank Vapor Pressure Sensors 5 Volt Reference | A/C B, MAP C, Vapor Sensor C3 | P0107, P0530, P0440, P0442, P0446, P1441 | Rough Idle, Exhaust Odor, A/C Inop
C2-14 | BLK | 452 | TP, IAT, Sensors, EGR Valve Ground | TP Term B, IAT Term A, EGR B | P0123, P0113 | Hesitation on acceleration
C2-15 | TAN | 800 | Serial Data (UART) | DLC Term 9 | P1601 | --
C2-16 | RED/BLK | 453 | Ignition Reference Low | ICM H | -- | --
C2-17 | BRN/WHT | 633 | Camshaft Position CMP Sensor Signal | CMP A | P0342 | --
C2-18 | -- | -- | -- | -- | -- | --
C2-19 | BRN | 1174 | Low Oil Level Switch Signal | Low Oil Level Switch B | -- | Check Oil Lamp ON (2)
C2-20 | -- | -- | -- | -- | -- | --
C2-21 | BLK/WHT | 771 | PRNDL A | Trans Range Term D | P0705 | No PRNDL Display
C2-22 | BRN | 25 | Generator L Lamp Signal | Gen B | P0562 | No Generator output
C2-23 | TAN/WHT | 551 | PCM Ground | Engine Ground | -- | --
C2-24 | -- | -- | -- | -- | -- | --
C2-25 | LT BLU/BLK | 396 | Cruise Engaged | Cruise Term J | -- | --
C2-26 | WHT | 776 | PRNDL P | Trans Range Term A | P0705 | No PRNDL Display
C2-27 | -- | -- | -- | -- | -- | --
C2-28 | -- | -- | -- | -- | -- | --
C2-29 | GRY | 474 | TP Sensor, EGR Valve 5 Volt Reference | TP A, EGR D | P0122, P0401, P1406 | Poor Performance (2), Hesitation on acceleration (1)
C2-30 | PPL | 1807 | Serial Data (Class 2) | DLC 2 | -- | No scan tool data
C2-31 | -- | -- | -- | -- | -- | --
C2-32 | PPL/WHT | 430 | 7X Reference (CKP Activity) | ICM G | P0335 | Stalls, Cranks but will not run
(1) Open circuit (2) Grounded circuit (3) Open/Grounded circuit

### Powertrain Control Module (PCM) Connector C3

Connector Part Information |

• | 12129025

• | 32 - Way F Micro - Pack 100 Series (Blue)

Pin | Wire Color | Circuit No. | Function | Component Connector Cavity | DTC(s) Affected | Possible Symptoms From a Faulty Circuit
--- | --- | --- | --- | --- | --- | ---
C3-01 | DK GRN/WHT | 817 | VSS 4K PPM Output | IP Junction Conn J7 | -- | No speedometer, Cruise control Inop
C3-02 | DK GRN/WHT | 459 | A/C Relay Driver | A/C Relay 85 | -- | A/C Inop (1), A/C on continuously (2)
C3-03 | DK GRN/WHT | 428 | EVAP Canister Purge Valve Driver | EVAP Purge Valve B | P0440, P0442, P0446, P1441 | --
C3-04 | -- | -- | -- | -- | -- | --
C3-05 | WHT | 1310 | EVAP Vent Solenoid Driver | EVAP Vent Solenoid B | P0446 (2) | --
C3-06 | -- | -- | -- | -- | -- | --
C3-07 | PPL | 401 | VSS Low | VSS B | P0502, P0503 | No speedometer, Cruise control inop
C3-08 | YEL | 400 | VSS High | VSS A | P0502, P0503 | No speedometer, Cruise control inop
C3-09 | -- | -- | -- | -- | -- | --
C3-10 | -- | -- | -- | -- | -- | --
C3-11 | -- | -- | -- | -- | -- | --
C3-12 | DK GRN | 335 | Cooling Fan Relay | Fan Relay 86 | -- | Fan inop (1), Fan runs continuously (2)
C3-13 | -- | -- | -- | -- | -- | --
C3-14 | DK GRN | 83 | Cruise Disable | Cruise Term H | -- | Cruise inop (1)
C3-15 | -- | -- | -- | -- | -- | --
C3-16 | -- | -- | -- | -- | -- | --
C3-17 | BLK/WHT | 451 | PCM Ground | Engine Ground | -- | --
C3-18 | PNK | 639 | Ignition Feed #3 | PCM Fuse | -- | Cranks But Will Not Run
C3-19 | BRN/WHT | 419 | MIL Control | I/P Cluster A8 | -- | No MIL (1), MIL ON (2)
C3-20 | WHT | 121 | Tach Lead | Relay Center | -- | --
C3-21 | LT GRN | 1222 | Shift B Solenoid | Trans A | -- | Section 7A
C3-22 | BRN | 418 | TCC PWM Solenoid | Trans C | -- | Section 7A
C3-23 | YEL/BLK | 1223 | Shift B Solenoid | Trans B | -- | Section 7A
C3-24 | TAN/BLK | 422 | TCC Apply Solenoid | Trans D | -- | Section 7A
C3-25 | PPL | 420 | TCC Brake Switch | TCC Brake Switch B | -- | No TCC (1), TCC will not disengage with the brake
C3-26 | -- | -- | -- | -- | -- | --
C3-27 | DK BLU | 496 | Knock Sensor Signal | Knock Sensor | P0325 | Spark Knock
C3-28 | -- | -- | -- | -- | -- | --
C3-29 | -- | -- | -- | -- | -- | --
C3-30 | DK GRN | 890 | Fuel Tank Vapor Pressure Signal | Vapor Sensor C2 | P0440, P0442, P0446, P1441 | --
C3-31 | ORN | 406 | Ignition Control 2 | ICM B | P0300 | Lack of Power, Stalls, Misses
C3-32 | WHT | 423 | Ignition Control 1 | ICM A | P0300 | Lack of Power, Stalls, Misses
(1) Open circuit (2) Grounded circuit (3) Open/Grounded Circuit