Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- EBCM detects open in the brake signal circuit.
- Both brake lamps are faulty.
- The stoplamp switch input voltage is between 6.6 and 9 volts for 0.5 second.