For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Disconnect the engine oil pressure indicator switch connector.
2. Start the engine and let it idle.

Is the Oil Pressure warning indicator on?

--

Go to Step 2

Go to Step 5

2 | Check for a short to ground in circuit 31. Is there a short to ground in circuit 31? | -- | Go to Step 3 | Go to Step 4
3 | Repair the short to ground in circuit 31. Has the repair been made and the system rechecked? | -- | System OK | --
4 | Replace the instrument cluster. Refer to Instrument Cluster Replacement . Has the repair been made and the system rechecked? | -- | System OK | --
5 | Replace the engine oil pressure indicator switch. Refer to Engine Oil Pressure Sensor and/or Switch Replacement in Engine Mechanical. Has the repair been made and the system rechecked? | -- | System OK | --