Test F: The Vehicle Dynamics Module (VDM) Does Not Respond To The Scan Tool

PINPOINT TEST F: THE VEHICLE DYNAMICS MODULE (VDM) DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The vehicle dynamics module (VDM) (if equipped) communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits 1827 (WH/LG) (HS-CAN +) and 1828 (PK/LG) (HS-CAN -) provide the network connection to the vehicle dynamics module. The vehicle dynamics module shares the HS-CAN with the PCM, the ABS module and the instrument cluster. Voltage for the vehicle dynamics module is provided by circuits 418 (DG/YE) and 1003 (GY/YE). Circuit 57 (BK) provides ground.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- VDM

F1-F2:

F2-F4: