Key Interlock Unit Inspection

Remove the front side trim.
Turn the ignition switch to ON, and inspect terminal voltages, referring to the chart below.
- If not as specified, repair the wiring harness and/or key interlock unit.
Fig 1: Identifying Key Interlock Unit Connector Terminals
Courtesy of MAZDA MOTORS CORP.

Fig 2: Testing Key Interlock Unit Chart
Courtesy of MAZDA MOTORS CORP.