On-vehicle Inspection (harness inspection)

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Disconnect the negative battery cable.
Remove the under cover.
Disconnect the cord assembly connector.

Fig 1: Oil Pressure Switch Connector
Courtesy of MAZDA MOTORS CORP.
Verify that there is no continuity between cord assembly terminal and ground.
- If as continuity, inspect the cord assembly.
- If the cord assembly is okay, inspect the oil pressure switch. (See ON-VEHICLE INSPECTION (OIL PRESSURE SWITCH INSPECTION) ).
Connect the cord assembly connector.
Install the under cover.
Connect the negative battery cable.

Fig 2: Checking Continuity Between Oil Pressure Switch Connector Terminal & Ground
Courtesy of MAZDA MOTORS CORP.