2005 Saturn Relay AWDFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) Connector End View C3

Fig 1: Powertrain Control Module (PCM) C3 Connector End View
GM1228485Courtesy of GENERAL MOTORS CORP.
Powertrain Control Module (PCM) Connector End Views

Connector Part Information 
  • OEM: 15437820
  • Service: 88953347
  • Description: 56-Way F Micro 64 Series Sealed (GY)
Terminal Part Information 
  • Terminal: 15359541/Tray 4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64A
Powertrain Control Module (PCM) C3

Pin Wire Color Circuit No. Function
1-3 - - Not Used
4 TN/WH 1669 HO2S Low Signal - Sensor 2
5 YE/BK 1227 TFT Sensor Signal
6 YE 492 MAF Sensor Signal
7 - - Not Used
8 TN/WH 1423 HO2S Heater Low Control - Sensor 2
9-10 - - Not Used
11 OG/BK 1230 AT ISS High Signal
12 YE 400 VSS High Signal
13-14 - - Not Used
15 GY 773 Transmission Range Switch Signal 3
16-18 - - Not Used
19 PU/WH 1668 HO2S High Signal - Sensor 2
20 TN/BK 464 Delivered Torque Signal
21 - - Not Used
22 YE 772 Transmission Range Switch Signal B
23 WH 776 Transmission Range Switch Signal P
24 WH 1804 TCC Release Switch Signal
25 - - Not Used
26 TN/BK 472 IAT Sensor Signal
27-32 - - Not Used
33 L-GN 1222 1-2 Shift Solenoid Valve Control
34 TN/WH 771 Transmission Range Switch Signal A
35-36 - - Not Used
37 L-BU 1296 Axle Actuator - Control (F46)
38 - - Not Used
39 BN 418 TCC PWM Solenoid Valve Control
40 OG/BK 463 Requested Torque Signal
41-43 - - Not Used
44 PU 401 VSS Low Signal
45 - - Not Used
46 YE/BK 1223 2 - 3 Shift Solenoid Valve Control
47 OG/BK 1228 PC Solenoid Valve High Control (Sol. A)
48 TN 452 Low Reference
49 D-BU/WH 1231 AT ISS Low Signal
50 TN 2760 Low Reference
51 L-BU/WH 1229 PC Solenoid Valve Low Control (Sol. A)
52-56 - - Not Used
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.