Engine Oil Temperature Indicator Always On
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Engine Oil Temperature Indicator Always On
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics Connector End View Reference: Engine Control Module (ECM) Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Start the engine. Does the OIL TEMP HIGH message display in the driver information center (DIC)? |
- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 |
|
30-140°C (86-284 °F) | Go to Step 10 | Go to Step 4 |
| 4 |
|
30°C (86°F) | Go to Step 6 | Go to Step 5 |
| 5 | Test the signal circuit of the engine oil temperature switch for a short to ground. Refer to Circuit Testing
and Wiring Repairs
. 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 temperature switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 8 |
| 7 | Inspect for poor connections at the harness connector of the engine control module (ECM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 9 |
| 8 | Replace the engine oil temperature switch. Refer to Engine Oil Level Sensor and/or Switch Replacement
. Did you complete the replacement? |
- | Go to Step 11 | - |
| 9 | Replace the ECM. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 11 | - |
| 10 | Replace the instrument panel cluster (IPC). Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |