Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

1. 2
   
   Disconnecting the brake switch connector, jumping the circuit, and observing a status change, isolates the brake switch as the source of the DTC.
2. 3
   
   If the ignition 1 voltage circuit shorts to ground, the IGN 1 fuse opens.
3. 5
   
   If the brake switch is properly adjusted, then the brake switch must be replaced.
4. 8
   
   Replace the PCM only after you have completed the preceding diagnostic steps.