P: Oil Pressure Gage Accuracy Test

1. Check oil level and pressure with a mechanical gage.

^ If oil level and pressure are OK, go to Step 2.

^ If oil level and oil pressure are not OK, see Engine for diagnosis.

2. Disconnect the Fuel Pump Oil Pressure Sender/Switch. Connect one red clip lead of the J-33431 tester to the harness connector TAN (31) wire, and connect the other red clip lead to ground. Set the resistance dials of the Sender to 0 ohms and then to 90 ohms. The Oil Pressure Gage should show low pressure and then show high pressure.

^ If the gage reads correctly, replace the Fuel Pump Oil Pressure Sender/Switch.

^ If the Gage does not read correctly, check the TAN (31) wire for high resistance (see schematic). If all connections are good, replace the Instrument Cluster (see Service and Repair).