Normal Operation

When the ignition key is turned to the RUN or START position, the ignition switch supplies voltage to the PCM  and BCM  . The BCM  then grounds the BJB  RUN/START relay control circuit to activate the RUN/START relay. When the relay contacts close voltage is supplied to the PCM  through Battery Junction Box (BJB) fuse 53 (5A).

• DTC  P2532 (Ignition Switch Run Position Circuit High) -- sets when the PCM  detects a voltage from the ACC/RUN bus when the ignition key is not in the START or RUN position.
• DTC  P2535 (Ignition Switch Run/Start Position Circuit High) -- sets when the PCM  detects a voltage from the RUN/START bus when the ignition key is not in the START or RUN position.

This pinpoint test is intended to diagnose the following:

• Wiring, terminals or connectors
• Starter relay
• BJB 
• BCM 
• PCM