Operation CHARM: Car repair manuals for everyone.

Test G: The Power Steering Control Module Does Not Respond To The Scan Tool

PINPOINT TEST G: THE POWER STEERING CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The power steering control module communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits VDB04 (WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the HS-CAN network connection to the occupant classification sensor module. The occupant classification sensor module shares the HS-CAN network with the PCM, the ABS module, the four wheel drive (4WD) control module, the instrument cluster, the occupant classification sensor module and the restraints control module (RCM). For Hybrid vehicles, the instrument cluster also shares the HS-CAN network with the transmission control module (TCM) and traction battery control module (TBCM). Voltage for the power steering control module is provided by circuit CBP35 (YE/GY) and circuit GD116 (BK/VT) provides ground

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Power steering control module


G1:






G1-G2:






G3-G4: