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Diagnosis And Testing - Starting System

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The battery, starting, and charging systems operate in conjunction with one another, and must be tested as a complete system. For correct starting/charging system operation, all of the components involved in these three systems must perform within specifications.

STARTING SYSTEM DIAGNOSIS

CONDITION POSSIBLE CAUSE CORRECTION
STARTER FAILS TO OPERATE 1. Battery discharged or inoperative 1. Charge and test battery. Replace battery, if required.
2. Starter motor or solenoid inoperative 2. Test the starter motor and solenoid. Replace starter motor, if required.
3. Starter relay inoperative 3. Refer to the appropriate Wiring Information. Test and replace the starter relay, if required.
4. Clutch pedal position switch inoperative (if equipped with manual transmission) 4. Refer to the Clutch pedal position switch. Test and adjust or replace switch, if required.
5. Park/Neutral position switch inoperative (if equipped with automatic transmission) 5. Refer to the Park/Neutral Position Switch. Test and adjust or replace switch, if required.
6. Starting circuit wiring inoperative 6. Refer to the appropriate Wiring Information. Test and repair starter feed and/or control circuits, if required.
STARTER ENGAGES, BUT FAILS TO TURN ENGINE 1. Battery discharged or inoperative 1. Charge and test battery. Replace battery if required.
2. Starter motor or solenoid inoperative 2. Test the starter motor and solenoid. Replace starter motor if required.
3. Starting circuit wiring inoperative 3. Refer to the appropriate Wiring Information. Test and repair starter feed and/or control circuits, if required.
4. Engine seized 4. Refer to - Engine. Test and repair engine as required.
STARTER ENGAGES, THEN DISENGAGES BEFORE ENGINE STARTS 1. Starter motor or solenoid inoperative 1. Test the starter motor and solenoid. Replace starter motor, if required.
2. Starter ring gear damaged 2. Remove starter motor and inspect starter ring gear. Replace starter ring gear, if required.
STARTER DOES NOT DISENGAGE 1. Starter motor incorrectly installed or solenoid inoperative 1. Inspect and test the starter motor and solenoid. Replace starter motor, if required.
2. Starter relay inoperative 2. Refer to the appropriate Wiring Information. Test and replace the starter relay, if required.