For 1990-2009 cars

## Engine Control Module Connector End Views Notchback

Table 1: | Engine Control Module (ECM) - A
Table 2: | Engine Control Module (ECM) - B

#### Engine Control Module (ECM) - A

Connector Part Information |

• | PED 12129231

• | 32-Way Retainer Lock (BK)

Pin | Wire | Circuit | Function
--- | --- | --- | ---
1 | BK/WH | -- | Ground
2 | BK/WH | -- | Ground
3 | D-BU | -- | Knock Sensor (KS) Signal
4-5 | -- | -- | Not Used
6 | YE/BK | -- | Low Reference
7 | L-BU | -- | Throttle Position (TP) Sensor Signal
8 | L-GN/BK | -- | Fuel Injector 3 Control
9 | L-BU/WH | -- | Fuel Injector 1 Control
10 | OG | -- | Low Reference
11 | YE | -- | Engine Coolant (ECT) Temperature Sensor Signal
12 | D-GN/WH | -- | Oxygen Sensor (O2) Signal
13 | D-BU | -- | Idle Air Control (IAC) B High Control
14 | -- | -- | Not Used
15 | PK | -- | 5-Volt Reference
16 | D-BU | -- | Low Reference
17 | BK/WH | -- | Ground
18 | WH | -- | Ignition Coil 2 and 3 Control
19 | OG | -- | Ignition Coil 1 and 4 Control
20 | D-GN | -- | EVAP Canister Purge Valve Solenoid Control
21 | D-BU/WH | -- | Crankshaft Position (CKP) Sensor Signal
22 | PK/BK | -- | Fuel Injector 2 Control
23 | BN | -- | Intake Air Temperature (IAT) Sensor Signal
24 | D-GN | -- | Manifold Absolute Pressure (MAP) Sensor Signal
25 | L-BU/BK | -- | Camshaft Position (CMP) Sensor Signal
26 | BN | -- | Fuel Injector 4 Control
27 | BN | -- | Oxygen Sensor (O2) Low Reference
28 | D-GN | -- | Idle Air Control (IAC) A High Control
29 | PK/D-BU | -- | Idle Air Control (IAC) B Low Control
30 | L-GN/BK | -- | Idle Air Control (IAC) A Low Control
31 | PU | -- | 5-Volt Reference
32 | BN | -- | Low Reference

#### Engine Control Module (ECM) - B

Connector Part Information |

• | PED 12129232

• | 32-Way Retainer Lock (CL)

Pin | Wire | Circuit | Function
--- | --- | --- | ---
1 | L-BU | -- | Low Reference
2 | BK/WH | -- | Battery Positive Voltage
3 | PK | -- | Ignition 1 Voltage
4-6 | -- | -- | Not Used
7 | L-BU | -- | A/C Pressure Sensor Signal
8 | D-GN | -- | Octane Selection Signal 2
9 | GY | -- | Engine Speed Signal
10 | D-GN/WH | -- | A/C Request Signal
11 | -- | -- | Not Used
12 | D-BU | -- | High Speed Cooling Fan Control
13 | -- | -- | Not Used
14 | PU | -- | CAN Serial Data High
15 | BK/WH | -- | Keyword Serial Data
16 | -- | -- | Not Used
17 | OG/BK | -- | 5-Volt Reference
18 | D-BU/WH | -- | Battery Positive Voltage
19 | D-BU | -- | Fuel Level Sensor Signal
20-21 | -- | -- | Not Used
22 | D-GN | -- | Octane Selection Signal 1
23 | D-GN/WH | -- | Vehicle Speed Sensor (VSS) Signal (Manual Transmission)
24 | D-GN | -- | Engine Coolant Temperature (ECT) Gage Control
25 | -- | -- | Not Used
26 | L-GN | -- | Fuel Pump Relay Control
27 | GY/D-GN | -- | Low Speed Cooling Fan Relay Control
28 | PU/WH | -- | A/C Clutch Relay Control
29 | -- | -- | Not Used
30 | YE | -- | Can Serial Data Low
31 | PU | -- | Fuel Gage Control
32 | WH | -- | MIL Control

## Engine Control Module Connector End Views Hatchback

Table 1: | Engine Control Module (ECM) - A
Table 2: | Engine Control Module (ECM) - B

#### Engine Control Module (ECM) - A

Connector Part Information |

• | PED 12129231

• | 32-Way Retainer Lock (BK)

Pin | Wire | Circuit | Function
--- | --- | --- | ---
1 | BK/WH | 51 | Ground
2 | BK/WH | 51 | Ground
3 | L-BU | 496 | Knock Sensor (KS) Signal
4-5 | -- | -- | Not Used
6 | YE/BK | 1868 | Crankshaft Position (CKP) Sensor Signal
7 | WH | 425 | Throttle Position (TP) Sensor Signal
8 | BN/WH | 1745 | Injector 3 Control
9 | BN/BK | 1747 | Injector 1 Control
10 | L-BU | 52 | Camshaft Position (CMP) Sensor Return
11 | L-GN | 410 | Engine Coolant (ECT) Temperature
12 | D-BU/BK | 429 | Oxygen Sensor (O2) Low Reference
13 | L-GN | 417 | Idle Air Control (IAC) B High Control
14 | -- | -- | Not Used
15 | PU | 427 | 5-Volt Reference
16 | BN | 732 | EVAP Canister Vent Solenoid Control
17 | BK/WH | 51 | Ground
18 | OG | 423 | Ignition Coil 2 and 3 Control
19 | WH | 406 | Ignition Coil 1 and 4 Control
20 | WH | 452 | EVAP Canister Purge Valve Solenoid Control
21 | D-BU/WH | 1869 | Low Reference
22 | L-GN | 1746 | Fuel Injector 2 Control
23 | L-BU | 468 | Intake Air Temperature (IAT) Sensor Signal
24 | L-BU | 432 | Manifold Absolute Pressure (MAP) Sensor Signal
25 | L-BU/BK | 1748 | Camshaft Position (CMP) Sensor Signal
26 | YE | 1744 | Injector 4 Control
27 | WH | 428 | Oxygen Sensor (O2) Signal
28 | L-GN | 534 | Idle Air Control (IAC) A High Control
29 | D-GN | 415 | Idle Air Control (IAC) B Low Control
30 | WH/D-BU | 533 | Idle Air Control (IAC) A Low Control
31 | L-BU | 469 | 5-Volt Reference
32 | D-BU/WH | 1876 | Low Reference

#### Engine Control Module (ECM) - B

Connector Part Information |

• | PED 12129232

• | 32-Way Retainer Lock (CL)

Pin | Wire | Circuit | Function
--- | --- | --- | ---
1 | L-BU | 1937 | Low Reference
2 | OG | 440 | Battery Positive Voltage
3 | PK | 1739 | Ignition 1 Voltage
4-6 | -- | -- | Not Used
7 | L-BU | 203 | A/C Pressure Sensor Signal
8 | GY | 892 | Octane Selection Switch
9 | GY | 121 | Engine Speed Signal
10 | D-GN/WH | 762 | A/C Request Signal
11 | BN/BK | 821 | Overspeed Warning Signal
12 | GY | 473 | High Speed Cooling Fan Control
13 | -- | -- | Not Used
14 | PU | 1807 | CAN Serial Data High
15 | BK/WH | 2051 | Keyword Serial Data
16-17 | -- | -- | Not Used
18 | OG | 440 | Battery Positive Voltage
19 | GY | 1936 | Fuel Level Sensor Signal
20 | -- | -- | Not Used
21 | L-GN/OG | 413 | Low Reference
22 | PU | 890 | Octane Selection Switch
23 | D-GN | 817 | Vehicle Speed Sensor (VSS) Signal (Manual Transmission)
24 | WH | 135 | Engine Coolant Temperature (ECT) Gage Control
25 | -- | -- | Not Used
26 | YE/D-BU | 497 | Fuel Pump Relay Control
27 | GY | 355 | Low Speed Cooling Fan Relay Control
28 | D-GN | 67 | A/C Clutch Relay Control
29 | -- | -- | Not Used
30 | YE | 710 | Can Serial Data Low (Automatic Transmission)
31 | WH | 30 | Fuel Gage Control
32 | BN | 419 | MIL Control