Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION ).
2. Inspect the following wiring harness for open or short circuit (continuity Inspection).
   Fig 1: Identifying CPP Switch Wiring Harness-Side Connector Terminals

   Courtesy of MAZDA MOTORS CORP.

Open circuit 

• If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
  • CPP switch terminal B and PCM terminal 1D
  • CPP switch terminal D and body ground

Short circuit 

• If there is continuity, there is a short circuit. Repair or replace the wiring harness.
  • CPP switch terminal B and body ground