For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | Go to Instrument Cluster System Check
2 |

1. Disconnect the oil pressure switch connector.
2. Connect a fused jumper from the oil pressure switch connector cavity to ground.
3. Turn the ignition switch to the ON position.

Does the oil pressure indicator lamp light?

--

Go to Step 4

Go to Step 3

3 |

1. Disconnect the fused jumper.
2. Disconnect the IP cluster assembly connector C1. Refer to Instrument Cluster Replacement in Instrument Panel Gauges, and Console for access.
3. Connect a digital multimeter from the IP cluster assembly connector C1 terminal 8 to the oil pressure switch connector cavity.
4. Measure the resistance.

Is the resistance less than the specified value?

5 ohms

Go to Step 5

Go to Step 6

4 |

1. Inspect for a poor connection at the oil pressure switch.
2. If the connection is OK, replace the oil pressure switch.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

5 |

1. Inspect the IP cluster printed circuit for cracks or bad connections.
2. If the circuit is OK, replace the oil pressure indicator bulb.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

6 | Repair the open in the YEL/BLK wire between the IP cluster assembly and the oil pressure switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Instrument Cluster System Check | --