Step
| Action
| Value(s)
| Yes
| No
|
1
| Turn the ignition switch to the RUN position.
Does the SERVICE ENGINE SOON indicator illuminate?
| --
| Go to
Step 2
| Go to
Powertrain On Board Diagnostic (OBD) System Check
in Engine Controls - 3.1L (LG8)
|
2
|
- Disconnect the engine oil pressure switch connector.
- Connect a fused 3 amp jumper between the engine oil pressure
switch connector terminal A and ground.
- Turn the ignition switch to the RUN position.
Does the oil pressure warning indicator illuminate?
| --
| Go to
Step 3
| Go to
Step 4
|
3
|
- Inspect for a poor connection at the engine oil pressure switch
connector.
- Replace the engine oil pressure switch. Refer to
Engine Oil Pressure Sensor and/or Switch Replacement
in Engine Controls - 3.1L (LG8).
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
4
| Inspect for a poor connection or an open in CKT 31.
Does a poor connection or an open in CKT 31 exist?
| --
| Go to
Step 5
| Go to
Step 6
|
5
|
- Repair the poor connection or the open in CKT 31.
- Inspect the system.
Is the symptom still present?
| --
| Go to
Step 6
| System OK
|
6
|
- Inspect the warning indicator bulb and the bulb connection.
- If the bulb and the bulb connection are OK, replace the instrument
cluster. Refer to
Instrument Cluster Replacement
.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
