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Home >> Mercury >> 2004 >> Marauder >> Repair and Diagnosis >> External Pages >> Different car >> Section 414 (Module Communications Network) >> Diagnosis And Testing >> Communications Network >> Pinpoint Test E: The Anti-Lock Brake System (ABS) Module Does Not Respond To The Diagnostic Tool >> Normal Operation
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Normal Operation

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

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 DLC C251. 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.

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