Symptom Troubleshooting Index
'07 model
SYMPTOM TROUBLESHOOTING INDEX
| Symptom |
Diagnostic procedure |
Also check for |
| Excessive engine oil consumption |
- Verify the engine oil filler cap, oil drain bolt, and oil filter are tight.
- Check for oil leaks.
- Check for worn valve guide(s).
- Check for worn valve stem seal(s).
- Check for damaged or worn piston ring(s) (see
PISTON RING REPLACEMENT
).
- Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see
BLOCK AND PISTON INSPECTION
).
|
Check the maintenance records, worn out engine oil will burn off at a higher rate |
| Low oil pressure indicator does not come on with the ignition switch in ON (II) |
- Do the gauge control module self-diagnostic function (see
SELF-DIAGNOSTIC FUNCTION
).
- Test the oil pressure switch (see
OIL PRESSURE SWITCH TEST ).
|
An open in the wire between the gauge control module and the oil pressure switch |
| Low oil pressure indicator stays on |
- Check the engine oil level.
- Do the gauge control module self-diagnostic function (see
SELF-DIAGNOSTIC FUNCTION
).
- Test the oil pressure switch (see
OIL PRESSURE SWITCH TEST ).
- Check the engine oil pressure (see
OIL PRESSURE TEST ).
- Check the oil filter for clogging.
- Check the oil screen for clogging.
- Check the relief valve (see
OIL PUMP OVERHAUL ).
- Inspect the oil pump (see
INSPECTION ).
|
A wire shorted to ground between the gauge control module and the oil pressure switch |
'08-10 models J35A6 engine
SYMPTOM TROUBLESHOOTING INDEX
| Symptom |
Diagnostic procedure |
Also check for |
| Excessive engine oil consumption |
- Verify the engine oil filler cap, oil drain bolt, and oil filter are tight.
- Check for oil leaks.
- Check for worn valve guide(s) (see
VALVE GUIDE REPLACEMENT
) or worn valve stem seal(s) (see
VALVE INSPECTION
).
- Check for damaged or worn piston ring(s) (see
PISTON RING REPLACEMENT
).
- Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see
BLOCK AND PISTON INSPECTION
).
|
Check the maintenance records, worn out engine oil will burn off at a higher rate |
| Low oil pressure indicator does not come on with the ignition switch in ON (II) |
- Do the LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (OPEN) (see
).
- Test the oil pressure switch (see
OIL PRESSURE SWITCH TEST ).
|
An open in the wire between the powertrain control module (PCM) and the oil pressure switch |
| Low oil pressure indicator stays on |
- Check the engine oil level.
- Do the LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (SHORT) (see
).
- Test the oil pressure switch (see
OIL PRESSURE SWITCH TEST ).
- Check the engine oil pressure (see
OIL PRESSURE TEST ).
- Check the oil filter for clogging.
- Check the oil screen for clogging.
- Check the relief valve (see
OIL PUMP OVERHAUL ).
- Inspect the oil pump (see
INSPECTION ).
|
A wire shorted to ground between the PCM and the oil pressure switch |
'08-10 models J35A7 engine
SYMPTOM TROUBLESHOOTING INDEX
| Symptom |
Diagnostic procedure |
Also check for |
| Excessive engine oil consumption |
- Verify the engine oil filler cap, oil drain bolt, and oil filter are tight.
- Check for oil leaks.
- Check for worn valve guide(s) (see
VALVE GUIDE REPLACEMENT
) or worn valve stem seal(s) (see
VALVE INSPECTION
).
- Check for damaged or worn piston ring(s) (see
PISTON RING REPLACEMENT
).
- Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see
BLOCK AND PISTON INSPECTION
).
|
Check the maintenance records, worn out engine oil will burn off at a higher rate |
| Low oil pressure indicator does not come on with the ignition switch in ON (II) |
Do the LOW OIL PRESSURE INDICATOR DOES NOT COME ON WITH THE IGNITION SWITCH IN ON (II) (see
). |
- Check engine oil level
- An open in the wire between the powertrain control module (PCM) and the rocker arm oil pressure sensor
|
| Low oil pressure indicator stays on |
- Check the engine oil level.
- Do the LOW OIL PRESSURE INDICATOR STAYS ON (see
).
|
A wire shorted to ground between the PCM and the rocker arm oil pressure sensor |