Circuit Description
When the engine oil level is in the normal range, the engine oil level switch is a closed switch and the engine oil level switch signal is low.
When a low engine oil level condition is present, the engine oil level switch is an open switch and the engine oil level switch signal is high. The IPC receives a class 2 message from the PCM requesting illumination of the CHECK ENG OIL LEVEL indicator.
Low Engine Oil Level Indicator Inoperative
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics | ||||
| 1 | Did you perform the Instrument Cluster Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Instrument Cluster |
| 2 | Turn ON the ignition, with the engine OFF. Does the low engine oil level indicator display in the message center? |
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
- | Go to Step 8 | Go to Step 4 |
| 4 |
|
- | Go to Step 5 | Go to Step 6 |
| 5 | Test the signal circuit of the engine oil level switch for a short to ground. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 7 |
| 6 | Inspect for poor connections at the harness connector of the engine oil level switch. Refer to Testing for Intermittent Conditions and Poor Connections
, and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 9 |
| 7 | Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections
, and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 10 |
| 8 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? |
- | Go to Step 11 | - |
| 9 | Replace the engine oil level switch. Refer to Engine Oil Level Sensor Replacement . Did you complete the replacement? |
- | Go to Step 11 | - |
| 10 |
IMPORTANT:
Replace the PCM. Refer to:Program the replacement PCM.
|
- | Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 3 |