Starter Circuit Troubleshooting
Make sure the transmission is in Neutral, and set the parking brake. Disconnect the connector from the starter solenoid S terminal. Connect a jumper wire from the battery positive terminal to the solenoid terminal.
Did the starter crank the engine?
YES
-
NO
-
Remove the starter, and repair or replace as necessary.■
Check the following items in the order listed until you find the open circuit:
While cranking the engine, check the cranking voltage and the current draw.
Is the cranking voltage greater than or equal to 8.0 V and the current draw less than or equal to 200 A?
YES
-
NO
-
Replace the starter, or remove and disassemble it, and check for the following:■
Check the engine speed while cranking the engine.
Is the engine speed above 100 rpm (min
−1
)?
YES
-
NO
-
Replace the starter, or remove and disassemble it, and check for the following:■
Open circuit in the starter armature commutator segments
Excessively worn starter brushes
Open circuit in the commutator brushes
Dirty or damaged helical splines or drive gear
Faulty drive gear clutch
Remove the starter, and inspect its drive gear and the flywheel ring gear for damage. Replace any damaged parts.