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 network with the PCM, the power steering control module, the restraints control module (RCM), the occupant classification sensor (OCS) module, the four-wheel drive (4WD) control module and the instrument cluster. Voltage for the ABS module is provided by circuit CBB38 (GY/BU), and ground is provided by circuit GD120 (BK/GN).

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

B1-B2:

B2-B3:

B4: