Engine Oil Pressure Gauge Inaccurate or Inoperative
Engine Oil Pressure Gauge Inaccurate or 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 | Start the engine. Does the engine oil pressure gauge display that the oil pressure is within the specified range? |
10-70 psi (69-483 kPa) | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
80 psi (550 kPa) | Go to Step 4 | Go to Step 6 |
| 4 |
|
0 psi (0 kPa) | Go to Step 7 | Go to Step 5 |
| 5 | Test the signal circuit of the oil pressure sensor for an open, a high resistance, or a short to voltage. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 9 |
| 6 | Test the signal circuit of the oil pressure sensor 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 12 | Go to Step 9 |
| 7 | Inspect for a high resistance or a poor connection at the case ground of the engine oil pressure sensor. 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 12 | Go to Step 8 |
| 8 | Inspect for poor connections at the harness connector of the engine oil pressure sensor. 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 12 | Go to Step 10 |
| 9 | Inspect for poor connections at the harness connector of the IPC. 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 12 | Go to Step 11 |
| 10 | Replace the engine oil pressure sensor. Refer to Engine Oil Pressure Sensor or Switch Replacement (6.6L) , Engine Oil Pressure Sensor or Switch Replacement (4.8L, 5.3L, 6.0L) , Engine Oil Pressure Sensor or Switch Replacement (4.3L) , Engine Oil Pressure Sensor or Switch Replacement (8.8L) . Did you complete the replacement? |
- | Go to Step 12 | - |
| 11 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? |
- | Go to Step 12 | - |
| 12 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |