Inspection Method for Sensor Connectors or Wires

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Connect the M-MDS to the DLC-2.
Switch the ignition ON (engine off).
NOTE:
- If the engine starts and runs, perform the following steps during idling.
Access the PIDs for the switch you are inspecting.
Slightly shake each connector or wiring harness vertically and horizontally while monitoring the PID.
- If the PID value is unstable, check for poor connection.
  
  Fig 1: Checking Connector Poor Connection
  Courtesy of MAZDA MOTORS CORP.