Normal Operation

The ABS module communicates with the stability control sensor cluster along the secondary bus, circuits VCA23 (BU/WH) and VCA24 (GN/OG).

• DTC U1901 (CAN Network #2 Communication Bus Fault) - Receive Error - If the ABS module does not receive an expected message from the stability control sensor cluster or the message received does not agree with other sensor inputs, DTC U1901 will be set.

  This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• Stability control sensor cluster
• ABS module