Test E: The Anti-Lock Brake System (ABS) Module Does Not Respond to The Diagnostic Tool
PINPOINT TEST E: THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOLE1-E3:
Normal Operation
The ABS module communicates with the diagnostic tool through the controller area network (CAN) circuits 3125 (RD/YE) and 3126 (TN/YE). If one of the bus wires becomes shorted to ground or voltage, or if some but not all termination resistors are lost, communications can continue. Check circuits 3125 (RD/YE) and 3126 (TN/YE) between the ABS module C155 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 CAN circuits, damage to the DLC C251, damage to the ABS module C155, or a problem in the in-line connectors.
Possible Causes
- circuit 3125 (RD/YE) open
- circuit 3126 (TN/YE) open
- DLC C251
- ABS Module
- ABS Module C155