GM Service Manual Online
For 1990-2009 cars only
Connector 1: Power Steering Control Module (PSCM) C1
Connector 2: Power Steering Control Module (PSCM) C2
Connector 3: Power Steering Control Module (PSCM) C3

Power Steering Control Module (PSCM) C1


Object Number: 823278  Size: CH

Connector Part Information

  • OEM: 7123-4123-30
  • Service: 88953301
  • Description: 2-Way F L Type (BK)

Terminal Part Information

  • Terminal/Tray: 7116-3250/10
  • Core/Insulation Crimp: G/3
  • Release Tool/Test Probe: 12094430/J-35616-22 (RD)

Power Steering Control Module (PSCM) C1

Pin

Wire Color

Circuit No.

Function

+

RD/BK

642

Battery Positive Voltage

-

BK

1150

Ground

Power Steering Control Module (PSCM) C2


Object Number: 872598  Size: CH

Connector Part Information

  • OEM: 15438391
  • Service: 88988409
  • Description: 6-Way F 040 Series (GY)

Terminal Part Information

  • Terminal/Tray: 173681-2/17
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-16 (L-GN)

Power Steering Control Module (PSCM) C2

Pin

Wire Color

Circuit No.

Function

1

TN/BK

2500

High Speed GMLAN Serial Data (+)

2

TN

2501

High Speed GMLAN Serial Data (-)

3

--

--

Not Used

4

TN/BK

2500

High Speed GMLAN Serial Data (+)

5

TN

2501

High Speed GMLAN Serial Data (-)

6

PK

1539

Ignition 1 Voltage

Power Steering Control Module (PSCM) C3


Object Number: 823278  Size: CH

Connector Part Information

  • OEM: 7123-4123-30
  • Service: 88953301
  • Description: 2-Way F L Type (BU)

Terminal Part Information

  • Terminal/Tray: 7116-3250/10
  • Core/Insulation Crimp: G/3
  • Release Tool/Test Probe: 12094430/J-35616-22 (RD)

Power Steering Control Module (PSCM) C3

Pin

Wire Color

Circuit No.

Function

+

RD

5

Left Assist Motor Control

-

BK

5

Right Assist Motor Control