| Connector 1: | Engine Control Module (ECM) C1 |
| Connector 2: | Engine Control Module (ECM) C2 |
| Connector 3: | Engine Control Module (ECM) C3 |
Engine Control Module (ECM) C1
Connector Part Information
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | -- | -- | Not Used |
2 | PU | 420 | TCC Brake Switch/Cruise Control Release Signal |
3-5 | -- | -- | Not Used |
6 | BN/WH | 379 | CPP Switch Signal |
7 | L-BU | 20 | Stop Lamp Switch Signal |
8 | -- | -- | Not Used |
9 | TN | 2759 | Low Reference |
10-11 | -- | -- | Not Used |
12 | BN/WH | 419 | MIL Control |
13 | D-GN/WH | 465 | Fuel Pump Relay Control |
14-15 | -- | -- | Not Used |
16 | PU | 16 | VSS Low Signal |
17 | -- | -- | Not Used |
18 | BN | 4 | Accessory Voltage |
19 | PK/BK | 1039 | Ignition 1 Voltage |
20 | RD/WH | 840 | Battery Positive Voltage |
21-32 | -- | -- | Not Used |
33 | WH/BK | 1164 | 5-Volt Reference-1 |
34 | GY | 2709 | 5-Volt Reference-1 |
35 | PU | 1272 | 5-Volt Reference-1 |
36 | BN | 1271 | Low Reference |
37 | tn | 1274 | Low Reference |
38-39 | -- | -- | Not Used |
40 | BN | 5069 | Powertrain relay Control |
41 | YE | 400 | VSS High Signal |
42-43 | -- | -- | Not Used |
44 | PU | 1589 | Fuel Level Sensor Signal |
44-46 | -- | -- | Not Used |
47 | D-BU | 1161 | APP Sensor 1 Signal |
48 | D-GN | 890 | Fuel Tank Pressure Sensor Signal |
49 | L-BU | 1162 | APP Sensor 2 Signal |
50-52 | -- | -- | Not Used |
53 | D-GN/WH | 459 | A/C Compressor Clutch Relay Control |
54 | D-BU | 473 | High Speed Cooling Fan Relay Control |
55 | WH | 1310 | EVAP Canister Vent Solenoid Control |
56 | YE | 447 | Starter Relay Coil Control |
Engine Control Module (ECM) C2
Connector Part Information
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | PU | 2121 | IC 1 Control |
2 | TN/WH | 3111 | HO2S Low Reference Bank 1 Sensor 1 |
3 | PU/WH | 3110 | HO2S Reference Voltage Bank 1 Sensor 1 |
4 | PU/WH | 1668 | HO2S High Signal - Bank 1 Sensor 1 |
5 | TN/WH | 1669 | HO2S Low Signal - Bank 1 Sensor 2 |
6-7 | -- | -- | Not Used |
8 | D-BU | 496 | Knock Sensor Signal |
9 | GY | 1716 | Low Reference |
10 | -- | -- | Not Used |
11 | YE | 581 | TAC Motor Control (1) |
12 | BN | 582 | TAC Motor Control (2) |
13 | PK/BK | 5293 | Ignition 1 Voltage |
14 | PK/BK | 6395 | CMP Actuator Solenoid Control Intake |
15-16 | -- | -- | Not Used |
17 | L-BU | 2123 | IC 3 Control |
18 | YE | 400 | VSS High Signal (w/M86) |
19 | PU | 401 | VSS Low Signal (w/M86) |
20 | GY | 5296 | Low Reference |
21-22 | -- | -- | Not Used |
23 | TN | 5301 | Low Reference |
24-26 | -- | -- | Not Used |
27 | PU | 574 | Low Reference |
28 | -- | -- | Not Used |
29 | TN | 2752 | Low Reference |
30 | L-GN | 5282 | Low Reference |
31 | -- | -- | Not Used |
32 | L-GN/BK | 1745 | Fuel Injector (2) Control |
33 | D-GN/WH | 2124 | IC 4 Control |
34 | -- | -- | Not Used |
35 | BN | 2129 | Low Reference |
36 | YE/BK | 5297 | 5-Volt Reference-1 |
37-38 | -- | -- | Not Used |
39 | D-BU | 5300 | 5-Volt Reference-1 |
40-41 | -- | -- | Not Used |
42 | TN | 2760 | Low Reference |
43 | L-GN | 2867 | 5-Volt Reference-2 |
44 | GY | 2701 | 5-Volt Reference-2 |
45 | -- | -- | Not Used |
46 | PU | 5284 | Low Reference |
47 | -- | -- | Not Used |
48 | PK/BK | 1746 | Fuel Injector (3) Control |
49 | -- | -- | Not Used |
50 | WH/BK | 6396 | CMP Actuator Solenoid Control Exhaust |
51-52 | -- | -- | Not Used |
53 | OG/WH | 2122 | IC 2 Control |
54-55 | -- | -- | Not Used |
56 | D-GN | 5273 | CMP Sensor Signal |
57-58 | -- | -- | Not Used |
59 | OG | 5275 | CMP Sensor Signal |
60-61 | -- | -- | Not Used |
62 | TN | 472 | IAT Sensor Signal |
63 | YE | 573 | CKP Sensor Signal |
64 | D-GN | 485 | TP Sensor 1 Signal |
65 | -- | -- | Not Used |
66 | PU | 486 | TP Sensor 2 Signal |
67 | YE | 492 | MAF Sensor Signal |
68 | BK/WH | 3113 | HO2S Heater Low Control - Bank 1 Sensor 1 |
69 | BK/WH | 3122 | HO2S Heater Low Control - Bank 2 Sensor 1 |
70 | -- | -- | Not Used |
71 | L-BU/BK | 844 | Fuel Injector (4) Control |
72 | TN | 1744 | Fuel Injector (1) Control |
73 | BK/WH | 451 | Ground |
Engine Control Module (ECM) C3
Connector Part Information
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1-6 | -- | -- | Not Used |
7 | OG | 225 | Generator Turn On Signal |
8-20 | -- | -- | Not Used |
21 | BK/WH | 2751 | Low Reference |
22 | -- | -- | Not Used |
23 | OG/BK | 469 | Low Reference |
24-27 | -- | -- | Not Used |
28 | TN/WH | 1704 | Low Reference |
29 | GY/WH | 23 | Generator Field Duty Cycle Signal |
30-32 | -- | -- | Not Used |
33 | TN | 2501 | High Speed GMLAN Serial Data (-) |
34 | -- | -- | Not Used |
35 | TN | 2761 | Low Reference |
36 | -- | -- | Not Used |
37 | GY | 2700 | 5-Volt Reference-1 |
38 | -- | -- | Not Used |
39 | GY | 2704 | 5-Volt Reference-1 |
40-43 | -- | -- | Not Used |
44 | L-BU/BK | 1688 | 5-Volt Reference-2 |
45-46 | -- | -- | Not Used |
47 | D-GN | 1433 | PNP/Clutch Start Switch Signal (M86) |
48 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
49 | D-GN | 335 | Low Speed Cooling Fan Relay Control |
50-52 | -- | -- | Not Used |
53 | TN/BK | 2500 | High Speed GMLAN Serial Data (+) |
54 | -- | -- | Not Used |
55 | YE | 410 | ECT Sensor Signal |
56 | -- | -- | Not Used |
57 | OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal |
58 | -- | -- | Not Used |
59 | L-GN | 432 | MAP Sensor Signal |
60-64 | -- | -- | Not Used |
65 | TN/BK | 231 | Oil Pressure Switch Signal |
66-73 | -- | -- | Not Used |
