For 1990-2009 cars

Connector 1: | Engine Control Module (ECM) X1
Connector 2: | Engine Control Module (ECM) X2

### Engine Control Module (ECM) X1

#### Connector Part Information

- OEM:1 928 404 781
- Description: 96-Way F Sealed (BK)

#### Engine Control Module (ECM) X1

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | 0.5 L-GN | 5282 | Camshaft Phaser Exhaust Solenoid Control
2 | 0.5 PU | 5284 | Camshaft Phaser Intake Soleniod Control
3-4 | -- | -- | Not Used
5 | 1.0 YE | 7301 | High Pressure Fuel Pump Actuator High Control
6 | 0.5 D-GN/WH | 428 | EVAP Canister Purge Solenoid Control
7 | 0.5 OG | 5275 | Camshaft Position Intake Sensor Signal
8-9 | -- | -- | Not Used
10 | 0.35 OG | 225 | Generator Turn On Signal
11-12 | -- | -- | Not Used
13 | 0.35 BN/WH | 2130 | Low Reference
14 | -- | -- | Not Used
15 | 0.5 GY | 705 | 5-Volt Reference 2
16 | 0.5 D-GN | 6391 | Turbo Bypass Valve Control
17 | 0.5 TN/BK | 231 | Oil Pressure Switch Signal
18 | 0.5 YE | 258 | Wastegate Solenoid Control
19-23 | -- | -- | Not Used
24 | 0.8 YE | 581 | TAC Motor Control - 1
25 | -- | -- | Not Used
26 | 1.0 L-BU | 4804 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 4
27 | 1.0 L-BU/WH | 4904 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4
28 | 1.0 D-BU | 4802 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 2
29 | 1.0 D-BU/WH | 4902 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2
30 | 0.35 GY | 23 | Generator Field Duty Cycle Signal
31-33 | -- | -- | Not Used
34 | 0.5 D-GN | 5273 | Camshaft Position Exhaust Sensor Signal 1
35 | 0.35 YE | 573 | CKP Sensor Signal
36 | 0.5 YE | 2918 | FRP Sensor Signal
37 | 0.5 L-GN | 432 | MAP Sensor Signal
38 | 0.5 GY | 598 | 5-Volt Reference 1
39 | 0.5 GY | 2701 | 5-Volt Reference 3
40 | -- | -- | Not Used
41 | 0.5 TN | 552 | Low Reference
42 | 0.5 TN | 808 | Low Reference
43 | -- | -- | Not Used
44 | 0.5 TN | 2761 | Low Reference
45 | 0.5 GY | 605 | 5-Volt Reference 3
46 | 0.35 TN | 452 | Low Reference
47 | -- | -- | Not Used
48 | 0.8 BN | 582 | TAC Motor Control - 2
49-50 | -- | -- | Not Used
51 | 1.0 BN | 4801 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 1
52 | 1.0 D-GN | 4803 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 3
53 | 1.0 D-GN/WH | 4903 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3
54 | 0.35 BN/WH | 419 | MIL Control
55 | 0.35 PU | 2121 | IC 1 Control
56 | 0.35 D-GN/WH | 2124 | IC 4 Control
57-58 | -- | -- | Not Used
59 | 0.5 D-BU | 496 | KS 1 Signal
60 | 0.5 GY | 2303 | KS 2 Signal
61-63 | -- | -- | Not Used
64 | 0.5 TN | 407 | Low Reference
65 | -- | -- | Not Used
66 | 0.5 PU | 7330 | Pre-Throttle Air Temp and Press (TMAP) Air Pressure Signal
67 | 0.5 TN/WH | 3111 | Heated Oxygen Sensor Low Signal Sensor 1
68 | 0.5 WH | 5279 | Heated Oxygen Sensor Pump Current Sensor 1
69-72 | -- | -- | Not Used
73 | 1.0 PU | 7300 | High Pressure Fuel Pump Actuator Low Control
74 | -- | -- | Not Used
75 | 1.0 BN/WH | 4901 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1
76-77 | -- | -- | Not Used
78 | 0.35 BN | 2129 | Low Reference
79 | 0.35 L-BU | 2123 | IC 3 Control
80 | 0.35 OG/WH | 2122 | IC 2 Control
81 | -- | -- | Not Used
82 | 0.5 YE | 410 | ECT Sensor Signal
83 | 0.5 GY | 1716 | KS 1 Signal
84 | 0.5 L-BU | 1876 | KS 2 Signal
85 | -- | -- | Not Used
86 | 0.5 L-BU | 7329 | Pre-Throttle Air Temp and Press (TMAP) Temperature Signal
87 | -- | -- | Not Used
88 | 0.5 TN | 2752 | Low Reference
89 | 0.5 PU | 486 | TP Sensor 2 Signal
90 | 0.5 D-GN | 485 | TP Sensor 1 Signal
91 | 0.5 L-GN | 5278 | Heated Oxygen Sensor Input Pump Current Sensor 1
92 | 0.5 PU/WH | 3110 | Heated Oxygen Sensor High Signal Sensor 1
93-94 | -- | -- | Not Used
95 | 0.5 GY | 597 | 5-Volt Reference 1
96 | 0.5 GY/WH | 3113 | Heated Oxygen Sensor Heater Low Control Sensor 1

### Engine Control Module (ECM) X2

#### Connector Part Information

- OEM: 1 928 404 916
- Description: 58-Way F Sealed (BK)

#### Engine Control Module (ECM) X2

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | 2.0 BK/WH | 451 | Ground
2 | 2.0 BK/WH | 451 | Ground
3 | 0.8 PK/BK | 5290 | Ignition 1 Voltage
4 | 1.0 BK/WH | 451 | Ground
5 | 0.8 PK/BK | 5290 | Ignition 1 Voltage
6 | 0.8 PK/BK | 5290 | Ignition 1 Voltage
7 | 0.5 GY/WH | 3122 | Heated Oxygen Sensor Heater Low Control Sensor 2
8 | -- | -- | Not Used
9 | 0.5 TN | 2759 | Low Reference
10 | 0.5 D-GN/WH | 465 | Fuel Pump Relay Control
11 | 0.35 TN | 5514 | Low Reference
12 | 0.35 YE | 447 | Starter Relay Coil Control
13 | 0.35 YE | 492 | MAF Sensor Signal
14 | 0.5 GY | 2709 | 5-Volt Reference 1
15 | 0.35 D-BU | 1161 | TP Sensor 1 Signal
16 | 0.5 BN/WH | 379 | CPP Switch Signal (MA5)
17 | -- | -- | Not Used
18 | 0.5 L-GN | 24 | Backup Lamp Supply Voltage (MA5)
19 | 0.5 WH | 1310 | EVAP Canister Vent Solenoid Control
20 | 0.35 BN | 7448 | Vacuum Assist Pump Relay Control
21 | -- | -- | Not Used
22 | 0.35 TN | 2760 | Low Reference
23 | 0.5 TN/WH | 3121 | Heated Oxygen Sensor Low Signal Sensor 2
24 | -- | -- | Not Used
25 | 0.35 L-BU | 1162 | TP Sensor 2 Signal
26 | -- | -- | Not Used
27 | 0.5 D-GN | 890 | Fuel Tank Pressure Sensor Signal
28 | -- | -- | Not Used
29 | 0.5 D-BU | 1809 | Brake Booster Vacuum Sensor Signal
30 | -- | -- | Not Used
31 | 0.35 D-BU | 6306 | Clutch Start Neutral Start Signal (MA5)
32-33 | -- | -- | Not Used
34 | 0.35 BN | 1271 | Low Reference
35 | 0.35 GY | 2700 | 5-Volt Reference 3
36 | 0.5 PU | 1589 | Fuel Level Sensor Signal
37 | -- | -- | Not Used
38 | 0.5 PU | 3120 | Heated Oxygen Sensor High Signal Sensor 2
39 | 0.5 OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal (C60)
40 | 0.5 PU | 401 | VSS Low Signal (MA5)
41 | 0.35 BN | 4 | Accessory Voltage
42 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+)
43 | -- | -- | Not Used
44 | 0.35 D-GN/WH | 459 | A/C Compressor Clutch Relay Control (C60)
45 | -- | -- | Not Used
46 | 0.35 WH | 2368 | Cooling Fan Speed Control
47 | 0.35 PU | 1272 | Low Reference
48 | 0.35 TN | 1274 | 5-Volt Reference 3
49 | 0.35 WH/BK | 1164 | 5-Volt Reference 2
50 | 0.35 L-BU | 6289 | Induction Air Temperature Sensor Signal
51 | -- | -- | Not Used
52 | 0.35 L-BU | 20 | Stop Lamp Supply Voltage (MA5)
53 | 0.5 YE | 400 | VSS High Signal (MA5)
54 | 0.5 PK | 1039 | Ignition 1 Voltage
55 | 0.5 TN | 2501 | High Speed GMLAN Serial Data BUS (-)
56 | 0.5 RD/WH | 840 | Battery Positive Voltage
57 | -- | -- | Not Used
58 | 0.35 YE | 5991 | Powertrain Relay Control