Starting System Test

STARTING SYSTEM TEST

For circuit descriptions and diagrams, refer to the Wiring Diagrams.

WARNING: On vehicles equipped with airbags, refer to the passive restraint systems before attempting 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.

INSPECTION

Before removing any unit from the starting system for repair or diagnosis, perform the following inspections:

- Battery - Visually inspect the battery for indications of physical damage and loose or corroded cable connections. Determine the state-of-charge and cranking capacity of the battery. Charge or replace the battery, if required.
- Ignition Switch - Visually inspect the ignition switch for indications of physical damage and loose or corroded wire harness connections.
- Transmission Range Sensor or Park/Neutral Switch - Visually inspect the transmission range sensor for indications of physical damage and loose or corroded wire harness connections.
- Starter Relay - Visually inspect the starter relay for indications of physical damage and loose or corroded wire harness connections.
- Starter Motor - Visually inspect the starter motor for indications of physical damage and loose or corroded wire harness connections.
- Starter Solenoid - Visually inspect the starter solenoid for indications of physical damage and loose or corroded wire harness connections.
- Wiring - Visually inspect the wire harness for damage. Repair or replace any faulty wiring, as required. Check for loose or corroded wire harness connections at main engine ground and remote jump post.

STARTING SYSTEM DIAGNOSIS