Test B: The ABS Module Does Not Respond To The Scan Tool

PINPOINT TEST B: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The ABS 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 network connection to the ABS module. The ABS module shares the HS-CAN with the PCM, the accessory protocol interface module (APIM), the restraints control module (RCM), the occupant classification system module (OCSM), the 4X4 control module (if equipped), the headlamp control module (HCM) (if equipped), the steering angle sensor module (SASM) (if equipped) and the instrument cluster (IC). Voltage for the ABS module is provided by circuits CBB50 (YE/OG), SBB57 (RD) and SBB15 (WH/RD). Ground is provided by circuit GD121 (BK/YE).

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

B1-B3:

B3-B4: