Component Tests and General Diagnostics

Starting System Diagnosis (Part 1 Of 2):

Starting System Diagnosis (Part 2 Of 2):

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 3 systems must perform within specifications.

Inspection
For complete starter wiring circuit diagrams, refer to Wiring Diagrams. Before removing any unit from starting system for repair or diagnosis, perform the following inspections:

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO PASSIVE RESTRAINT SYSTEMS, BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

- Battery - Visually inspect battery for indications of physical damage and loose or corroded cable connections. Determine state-of-charge and cranking capacity of battery. Charge or replace battery if required. Refer to Battery in Battery. Note: If equipped with diesel engine, a dual battery system may be used, and both batteries must be inspected.

- Ignition Switch - Visually inspect ignition switch for indications of physical damage and loose or corroded wire harness connections. Refer to Ignition Switch and Key Lock Cylinder.

- Clutch Pedal Position Switch - If equipped with manual transmission, visually inspect clutch pedal position switch for indications of physical damage and loose or corroded wire harness connections.

- Park/Neutral Position Switch - If equipped with automatic transmission, visually inspect park/neutral position switch for indications of physical damage and loose or corroded wire harness connections.

- Starter Relay - Visually inspect starter relay for indications of physical damage and loose or corroded wire harness connections.

- Starter Motor - Visually inspect starter motor for indications of physical damage and loose or corroded wire harness connections.

- Starter Solenoid - Visually inspect starter solenoid for indications of physical damage and loose or corroded wire harness connections.

- Wiring - Visually inspect wire harnesses for damage. Repair or replace any faulty wiring, as required. Refer to Wiring Diagrams.