Inspection Method for Sensor Connectors or Wires

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Connect the WDS or equivalent to the DLC-2.
Turn ignition switch to ON position (Engine OFF).
NOTE:
- If engine starts and runs, perform the following steps at idle.
Access PIDs for the switch you are inspecting.
Shake each connector or wire harness a little vertically and horizontally while monitoring the PID.
- If PID value is unstable, check for poor connection.
  
  Fig 1: Inspection Method For Sensor Connectors Or Wires
  Courtesy of MAZDA MOTORS CORP.