2004 Pontiac Sunfire StandardFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) Connector End Views

Powertrain Control Module (PCM) C1

GM784851Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15357150
  • 56-Way F Micro-Pack 064 Series (BLU)
Pin Wire Color Circuit No. Function
1-3 - - Not Used
4 PPL 420 TCC Brake Switch/Cruise Control Release Signal - Automatic Transmission Only
5 PPL 5607 Fuel Gage Select Signal
6 - - Not Used
7 BLK 2760 Low Reference
8-9 - - Not Used
10 TAN 5631 Low Reference
11 BLK 2759 Low Reference
12-14 - - Not Used
15 PPL 1807 Class 2 Serial Data - Primary
16 PPL 1807 Class 2 Serial Data - Primary
17-18 - - Not Used
19 PNK 639 Ignition 1 Voltage
20 ORN 480 Battery Positive Voltage
21 TAN 472 IAT Sensor Signal
22 PPL 1589 Fuel Level Sensor Signal - Primary
23 GRY 2700 5 Volt Reference
24 GRY 5634 5 Volt Reference
25 GRY 2709 5 Volt Reference
26-28 - - Not Used
29 LT GRN 5606 Fuel Indicator Lamp Control
30 - - Not Used
31 BRN 436 AIR Relay Control
32 - - Not Used
33 BRN/WHT 419 MIL Control
34 DK GRN/WHT 817 Vehicle Speed Signal
35 PNK/BLK 5605 Fuel Injector Module Status
36 - - Not Used
37 RED/BLK 380 A/C Refrigerant Pressure Sensor Signal
38 DK BLU 5632 AF Fuel Tank Temperature Sensor Signal
39 DK GRN 890 Fuel Tank Pressure Sensor Signal
40-42 - - Not Used
43 DK GRN 335 Cooling Fan Relay Control
44 RED 2531 AF Relay Control
45 WHT 1310 EVAP Canister Vent Solenoid Control
46 DK GRN/WHT 465 Fuel Pump Relay Control
47 DK GRN/WHT 459 A/C Compressor Clutch Control
48 - - Not Used
49 DK GRN 83 Cruise Disable Output
50 DK BLU 2712 AF Fuel Temperature Sensor Signal
51 BLK 2751 Sensor Ground
52-56 - - Not Used
Powertrain Control Module (PCM) C2

GM784850Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15357133
  • 73-Way F Micro-Pack 064 Series (BLK)
Pin Wire Color Circuit No. Function
1 LT BLU/BLK 1748 IAC Coil A Low Control
2 LT BLU/WHT 1747 IAC Coil A High Control
3 LT BLU 5618 High Pressure Lock - Off Control
4 - - Not Used
5 DK GRN/WHT 428 EVAP Canister Purge Solenoid Control
6 RED/BLK 1228 PC Solenoid Valve High Control - Sol. A - Automatic Transmission Only
7 LT BLU/WHT 1229 PC Solenoid Valve Low Control - Sol A - Automatic Transmission Only
8 - - Not Used
9 PNK/BLK 429 AIR Solenoid Control
10 LT GRN 1222 1-2 Shift Solenoid Valve Control - Automatic Transmission Only
11 YEL/BLK 1223 2-3 Shift Solenoid Valve Control - Automatic Transmission Only
12 BRN 418 TCC PWM Solenoid Valve Control - Automatic Transmission Only
13 PPL/WHT 1668 HO2S High Signal Bank 1 Sensor 2
14 TAN/WHT 1669 HO2S Low Signal - Bank 1 Sensor 2
15 TAN 1667 HO2S Low Signal - Bank 2 Sensor 1
16 PPL 1666 HO2S High Signal - Bank 2 Sensor 1
17 LT GRN/WHT 1749 IAC Coil B High Control
18 LT GRN/BLK 444 IAC Coil B Low Control
19 WHT 423 IC Timing Control
20 ORN 406 IC Timing Control B
21-25 - - Not Used
26 BRN/WHT 633 CAM Sensor Signal
27 YEL 573 CKP Sensor 1 Signal
28 PPL 574 Low Reference
29 LT GRN 432 MAP Sensor Signal
30 DK GRN/WHT 5633 AF Fuel Tank Pressure Sensor Signal
31 DK BLU 417 TP Sensor Signal
32 DK BLU 5622 AF Fuel Rail Pressure Sensor Signal
33 DK BLU 5617 Low Pressure Lock-Off Control
34 WHT 776 Transmission Range Switch Signal P
35 GRY 773 Transmission Range Switch Signal C
36 YEL 772 Transmission Range Switch Signal B
37 BLK/WHT 771 Transmission Range Switch Signal A
38 - - Not Used
39 BLK 2761 Low Reference
40 BLK 2762 Transmission Fluid Temp Signal
41 DK BLU/WHT 1231 AT ISS High Signal - Automatic Transmission Only
42 PPL 401 Signal Low-Front
43 - - Not Used
44 GRY 1716 Low Reference
45 ORN/BLK 469 Low Reference
46 - - Not Used
47 BLK 2752 Low Reference
48 BLK 470 Low Reference
49 GRY 23 Generator Field Duty Cycle Signal
50 RED 225 Generator Turn On Signal
51 BLK 1744 Fuel Injector 1 Control
52 LT GRN/BLK 1745 Fuel Injector 2 Control
53 LT BLU/BLK 396 Cruise Control Engaged Signal
54 TAN/BLK 231 Oil Pressure Switch Signal
55 PNK 1224 Transmission Fluid Pressure Switch Signal A - Automatic Transmission Only
56 DK BLU 1225 Transmission Fluid Pressure Switch Signal B - Automatic Transmission Only
57 RED 1226 Transmission Fluid Pressure Switch Signal C - Automatic Transmission Only
58 YEL 657 TCC Release Switch Signal - Automatic Transmission Only
59 YEL 410 ECT Sensor Signal
60 YEL/BLK 1227 TFT Sensor Signal - Automatic Transmission Only
61 RED/BLK 1230 AT ISS Low Signal - Automatic Transmission Only
62 YEL 400 Signal-High Front
63 - - Not Used
64 DK BLU 496 Knock Sensor 1 Signal
65 GRY 2704 5 Volt Reference
66 - - Not Used
67 GRY 2701 5 Volt Reference
68 GRY 474 5 Volt Reference
69 DK GRN 676 HO2S Heater High Control Bank 1 Sensor 1
70 BLK/WHT 1423 HO2S Heater Low Control
71 LT BLU/BLK 844 Fuel Injector 4 Control
72 PNK/BLK 1746 Fuel Injector 3 Control
73 BLK/WHT 451 Ground
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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.

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