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 1827 (WH/LG) (HS-CAN +) and 1828 (PK/LG) (HS-CAN -) provide the network connection to the ABS module. The ABS module shares the HS-CAN network with the PCM, the vehicle dynamics module (VDM), the instrument cluster and the fire suppression module (if equipped). Voltage for the ABS module is provided by circuits 483 (RD), 601 (LB/PK) and 1003 (GY/YE) and ground is provided by circuit 57 (BK).

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

B1-B2:

B3-B4:

B4-B5: