Circuit/System Testing

Verify that the battery is sufficiently charged and that the battery cables are clean and tight. Refer to Charging System Test .
- If the battery is not sufficiently charged, refer to Battery Charging .
- If the battery cables are not clean and tight, refer to Fastener Tightening Specifications .
Using a DMM, measure voltage between the positive battery terminal and X1 terminal B at the solenoid as the ignition switch is turned to the START position. Voltage should be less than 0.5 volt.
- If greater than the specified value, replace the starter solenoid cable.
Using a DMM, measure voltage between the negative battery terminal and the starter motor case as the ignition switch is turned to the START position. Voltage should be less than 0.5 volt.
- If greater than the specified value, replace the negative battery cable.
Remove the drive belts. Refer to one of the following:
- Drive Belt Replacement - Accessory
- Air Conditioning Compressor Belt Replacement
Attempt to start the engine, with the drive belts removed.
- If the engine cranks, inspect the engine accessories and belt drive system for mechanical binding.
Attempt to rotate the crankshaft using a breaker bar, or other suitable tool. Verify that the engine is not seized.
- If the engine is seized, refer to Engine Will Not Crank - Crankshaft Will Not Rotate .
If all circuits test normal, replace the starter motor.