Normal Operation

When the ignition is turned to the RUN position, the ABS module and the Body Control Module (BCM) share Vehicle Identification Number (VIN) information over the High Speed Controller Area Network (HS-CAN).

• DTC B2900 (VIN Mismatch) - this DTC sets in the ignition cycle if the VIN information stored in the ABS module does not match the information transmitted by the BCM. DTCs set in the ignition cycle can only be cleared by cycling the ignition off and on once the fault has been corrected.

  This pinpoint test is intended to diagnose the following: 

  • Module configuration (ABS and BCM)
  • ABS module