Symptom |
Possible causes |
Action |
The engine does not crank (starter motor does not
turn) |
- Gear selector not in P or N position (vehicles with
automatic transmission)
- Battery
- Starter relay
- Invalid key code received by central junction box (CJB)
- Harness/Connectors
- Starter motor
- Ignition switch
- Generator
- Transmission control module (TCM)
- Engine control module (ECM)
- Engine seized
|
Make sure the gear selector is in the P or N
position and correctly adjusted. Check the battery condition and state of
charge. Check for DTCs indicating an immobilizer fault. Check the starter
motor relay, ignition switch and generator circuits. Refer to the
electrical guides. Check for TCM and ECM DTCs. Check that the engine turns
freely. |
The engine does not crank (starter motor does turn)
|
- Starter motor installation
- Starter motor
- Flywheel/Drive plate ring gear
|
Check the starter motor installation (fasteners tight,
starter motor square to engine, etc). Check the flywheel/drive plate ring
gear teeth for damage, foreign objects, etc. |
Engine cranks too slowly |
- Battery
- Harness/Connectors
- Starter motor
- Oil grade
|
Check the battery condition and state of charge. Check the
starter motor circuits. Refer to the electrical guides. Check the engine
oil grade and condition. |
Engine cranks too fast |
|
Check the engine compressions. |
Excessive starter motor noise |
- Starter motor
- Flywheel/Drive plate ring gear
- Starter motor installation/casing
|
Check the starter motor installation (fasteners tight, motor
square to engine, etc). Check the starter motor casing condition. Check
the flywheel/drive plate ring gear teeth for damage, foreign objects, etc.
|