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

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

Test H1-H2:

Test H2-H3:

Normal Operation
The ABS module communicates with the diagnostic tool through the controller area network (CAN) circuits 1827 (WH/LG) and 1828 (PK/LG). If one of the CAN circuits become shorted to ground or voltage, or if some but not all termination resistors are lost, communications can continue. Check circuits 1827 (WH/LG) and 1828 (PK/LG) between the ABS module C135 and the 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 circuit 1827 (WH/LG) and 1828 (PK/LG), damage to the DLC C251, damage to the ABS module C135, or a problem with the in-line connector.

Possible Causes
- circuit 1827 (WH/LG) open
- circuit 1828 (PK/LG) open
- in-line connector
- DLC C251
- ABS module C135
- ABS module