2007 Saturn Ion Red LineFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) C3

Fig 1: Powertrain Control Module (PCM) C3 Connector End View
GM1228487Courtesy of GENERAL MOTORS CORP.
Powertrain Control Module (PCM) C3 Connector & Terminal Parts Information

Connector Part Information 
  • OEM: 15468091
  • Service: 88953347
  • Description: 56-Way F Micro 64 Series Sealed (GY)
Terminal Part Information 
  • Pins: 10, 15, 22, 31, 36, 37, 44, 45
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
Powertrain Control Module (PCM) C3 Terminal Identification

Pin Wire Color Circuit No. Function
1-9 - - Not Used
10 BK 891 Boost Gage Signal
11-14 - - Not Used
15 TN/BK 231 Oil Pressure Switch Signal
16-21 - - Not Used
22 WH/BK 2932 5-Volt Reference
23-30 - - Not Used
31 GY/BK 433 BARO Sensor Signal
32-35 - - Not Used
36 OG/BK 6014 Low Reference
37 D-GN/WH 428 EVAP Canister Purge Solenoid Control
38-43 - - Not Used
44 PU 401 Signal Low - Front/VSS Low Signal/OSS Low Signal
45 YE 400 Signal High - Front/VSS High Signal/OSS High Signal
46-56 - - Not Used
Factory Service Tools

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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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