Normal Operation

The ignition switch is spring loaded to automatically return to the RUN position after being placed in the START position. When the ignition switch is placed in START, fused ignition voltage is sent to the One-Touch Integrated Start (OTIS) diode in the Battery Junction Box (BJB) and the PCM along circuit CDC35 (BU/WH). From the OTIS  diode, the voltage is sent to the Smart Junction Box (SJB), the PCM and the starter relay in the BJB  along circuit CE336 (GN/WH).

• DTC B2A20 (Ignition Stuck in START) - The SJB  continuously monitors the ignition switch state, if the SJB  detects voltage on circuit CE336 (GN/WH) for more than 30 seconds, DTC B2A20 will be set.

  This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• Ignition switch
• SJB