CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND OIL PRESSURE SWITCH.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from oil pressure switch.

3) Turn the ignition switch to ON.

4) Measure the voltage of harness between oil pressure switch connector and chassis ground.

Connector & terminal

(E11) No. 1 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Replace the oil pressure switch.