Inspection Method for Switch Connectors or Wires

Connect M-MDS to DLC-2.
Turn ignition switch to ON position (Engine off).
NOTE:
- If engine starts and runs, perform the following steps during idle.
Access PIDs for the switch you are inspecting.
Turn switch on manually.
Slightly shake each connector or wiring harness vertically and horizontally while monitoring the PID.
- If PID value is unstable, check for poor connection.
  
  Fig 1: Inspecting Wiring Harnesses
  Courtesy of MAZDA MOTORS CORP.