2004 Pontiac Aztek Base, FWDFACTORY OEM SERVICE PROCEDURE

Engine Control Module Connector End View (ECM) C1

Engine Control Module Connector End View (ECM) C1

GM816165Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 1928403379
  • 64-Way F (BLK)
Pin Wire Color Circuit No. Function
1 TAN 407 Knock Sensor Low Reference Bank 2
2 - - Not Used
3 LT GRN 5278 HO2S Input Pump Current Bank 1 Sensor 1
4 ORN 5275 Camshaft Position (CMP) Sensor Signal - Intake Bank 1
5 GRY 605 5-Volt Reference
6 - - Not Used
7 TAN 470 Low Reference
8 PPL 486 TP Sensor 2 Signal
9 DK GRN/WHT 2124 Ignition Control 4
10 WHT/BLK 5039 Crankshaft Position (CKP) Sensor Signal
11 - - Not Used
12 ORN/BLK 5272 Camshaft Actuator Solenoid Control - Intake Bank 2
13 LT GRN 5282 Camshaft Actuator Solenoid Control - Exhaust Bank 1
14 - - Not Used
15 BRN 582 TAC Motor Control - 2
16 GRY/WHT 3113 HO2S Heater Control Bank 1 Sensor 1
17 GRY 1716 Knock Sensor Low Reference Bank 1
18 - - Not Used
19 PPL/WHT 1665 HO2S Reference Voltage Bank 1 Sensor 1
20 DK GRN 5273 Camshaft Position (CMP) Sensor Signal - Exhaust Bank 1
21 GRY 23 Generator Field Duty Cycle Signal
22 - - Not Used
23 YEL 410 ECT Sensor Signal
24 - - Not Used
25 LT BLU/WHT 2126 Ignition Control 6
26 ORN/WHT 2122 Ignition Control 2
27-28 - - Not Used
29 PPL 5284 Camshaft Actuator Solenoid Control - Intake Bank 1
30 WHT/BLK 5283 Camshaft Actuator Solenoid Control - Exhaust Bank 2
31 YEL 581 TAC Motor Control - 1
32 - - Not Used
33 DK BLU 496 Knock Sensor Signal Bank 1
34 - - Not Used
35 WHT 5279 HO2S Pump Current Bank 1 Sensor 1
36 PPL 5274 Camshaft Position (CMP) Sensor Signal - Exhaust Bank 2
37 BRN 1174 Engine Oil Level Sensor Signal
38 DK GRN/WHT 357 Engine Oil Temperature Sensor Signal
39 TAN 2752 Low Reference
40 TAN/BLK 231 Engine Oil Pressure Sensor Signal
41 DK GRN 2125 Ignition Control 5
42 PPL 2121 Ignition Control 1
43 ORN 225 Generator Turn On Signal
44 DK BLU/BLK 5041 Intake Manifold Runner Control (IMRC) Solenoid Control
45 DK BLU/BLK 844 Fuel Injector 4 Control
46 PNK/BLK 1746 Fuel Injector 3 Control
47 TAN/WHT 845 Fuel Injector 5 Control
48 LT GRN/WHT 428 EVAP Canister Purge Valve Control
49 GRY/BLK 1798 Engine Ground - Shield
50 LT BLU 1876 Knock Sensor Signal Bank 2
51 - -1 Not Used
52 TAN 1664 HO2S Low Reference Bank 1 Sensor 1
53 YEL 5276 Camshaft Position (CMP) Sensor Signal - Intake Bank 2
54 GRY 2701 5-Volt Reference
55 DK GRN 485 TP Sensor 1 Signal
56 ORN/BLK 5266 BARO Sensor Signal
57 GRY 705 5-Volt Reference
58 LT BLU 2123 Ignition Control 3
59 PPL/WHT 5024 CKP Low Reference
60-61 - - Not Used
62 LT GRN/BLK 1745 Fuel Injector 2 Control
63 TAN 1744 Fuel Injector 1 Control
64 YEL/BLK 846 Fuel Injector 6 Control
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.