GM Service Manual Online
For 1990-2009 cars only
Table 1: Power Steering Control Module Scan Tool Data Parameters
Table 2: Power Steering Control Module Scan Tool Output Controls

Power Steering Control Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON

AFS Actuator Angle

--

Varies

This displays °. This is the current angle of the active front steering (AFS) actuator.

AFS Heat Protection

--

Varies

The scan tool displays Active or Inactive. This is the state of the active front steering (AFS) heat protection.

AFS Lock Solenoid

--

Unlocked

The scan tool displays Locked or Unlocked. This is the state of the active front steering (AFS) lock solenoid.

AFS Motor Command

--

Varies

This displays %. This is the active front steering (AFS) motor percentage.

PSCM Centered

--

Yes

The scan tool displays Yes or No. Yes is displayed if the power steering control module (PSCM) is centered.

Steering Wheel Sensor Signal

--

Valid

The scan tool displays Valid or Invalid. This is the state of the steering wheel sensor signal.

TCM Status Signal

--

Valid

The scan tool displays Valid or Invalid. This is the state of the transmission control module (TCM) signal.

VSCM Veh. Spd. Signal

--

Valid

The scan tool displays Valid or Invalid. This is the state of the vehicle stability control module (VSCM) vehicle speed signal.

Power Steering Control Module Scan Tool Output Controls

Output Control

Description

Actuator Removal Procedure

This output control is used to remove an actuator.

New Actuator Setup Procedure

This output control is used to setup a new actuator.

PSCM Calibration Procedure

This output control is used to calibrate a power steering control module (PSCM).