ABS and Brake Lights on No Codes Set - keywordsDTC indicator lamp module

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

The ABS and the Red Brake lights are on with no codes set. The vehicle may not have come in for this concern. The ABS and Red Brake lights may have come on after clearing codes in another module for an unrelated concern. When the Tech 2 is used, the EBTCM will show it is commanding the lights on. The condition occurs because the BCM is no longer broadcasting VIN digits 2-9 on the High Speed Bus.

1. Disconnect the battery cables from the battery and touch the cables together for 30 seconds, then reconnect the cables.
2. Recheck and see if the ABS and Red Brake lights are off, also make sure no codes are set. Check to make sure you can still read the whole VIN in the BCM using the Tech 2. Select Body/Body Control Module/ID Information/VIN Information.
3. If the ABS and Red Brake lights are still on with NO codes set; follow the flow chart for ABS Active Indicator Always On SI Document ID # 1318351.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.