For 1990-2009 cars

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

1. Disconnect the oil pressure switch connector.
2. Start the engine.

Does the oil pressure indicator lamp light?

--

Go to Step 3

Go to Step 6

3 |

1. Disconnect the IP cluster assembly connector C1.
2. Connect a J 39200 DMM from the IP cluster assembly connector C1 terminal 8 to ground.
3. Measure the resistance.

Is the measured resistance less than the specified value?

∞

Go to Step 4

Go to Step 5

4 | Repair the short to ground 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 | --
5 | Repair/replace the IP cluster printed circuit. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
6 |

1. Turn the ignition switch to the LOCK position.
2. Perform the oil pressure test.

Is the oil pressure value within the specified range?

--

Go to Step 7

Go to Step 8

7 | Replace the oil pressure switch. Is the repair complete? | -- | Go to Instrument Cluster System Check | Go to Step 5
8 | Inspect the engine oil pressure. Is the engine oil pressure below the prescribed limits? | -- | Go to Oil Pressure Diagnosis and Testing for 1.0 L or Oil Pressure Diagnosis and Testing for 1.3 L in Engine Mechanical | Go to Instrument Cluster System Check