Test B: The Anti-Lock Brake System (ABS) Module Does Not Respond to the Diagnostic Tool

PINPOINT TEST B: THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL

B1-B3:

Normal Operation
The ABS module communicates with the diagnostic tool through the controller area network (CAN), circuits 1908 (WH) and 1909 (BK). Check circuits 1908 (WH) and 1909 (BK) between the ABS module C135 and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the CAN circuits, damage to the DLC C251, damage to the ABS module C135, or a problem in an in-line connector.

Possible Causes
- CAN circuit 1908 (WH) open
- CAN circuit 1909 (BK) open
- ABS module C135
- ABS module