Inspection Method For Switch Connectors Or Wires

Connect the WDS or equivalent to the DLC-2.
Turn ignition switch to ON position (Engine OFF).
NOTE:
- If the engine starts and runs, perform the following steps at idle.
Access the PIDs for the switch you are inspecting.
Turn the switch on manually.
Shake each connector or wiring harness a bit vertically and horizontally while monitoring the PID.
- If the PID value is unstable, check for poor connection.
  
  Fig 1: Shaking Connector Or Wiring Harness
  Courtesy of MAZDA MOTORS CORP.