Starting System Test

Starting System Diagnosis (Part 1 Of 2):

Starting System Diagnosis (Part 2 Of 2):

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. Refer to the Battery section for more information.
- Ignition Switch - Visually inspect the ignition switch for indications of physical damage and loose or corroded wire harness connections.
- Transmission Range Sensor - 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 - Visually inspect the starter 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.
- Power Distribution Center (PDC) - Visually inspect the B+ connections at the PDC for physical damage and loose or corroded harness connections.