For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### Circuit/System Description

The PG starter motors are non-repairable. They have pole pieces that are arranged around the armature. Both solenoid windings are energized. The pull-in winding circuit is completed to the ground through the starter motor. The windings work together magnetically to pull and hold in the plunger. The plunger moves the shift lever. This action causes the starter drive assembly to rotate on the armature shaft spline as it engages with the flywheel ring gear on the engine. Moving at the same time, the plunger also closes the solenoid switch contacts in the starter solenoid. Full battery voltage is applied directly to the starter motor and it cranks the engine.

### Reference Information

#### Schematic Reference

Starting and Charging Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Charging System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Verification

Start the engine. Listen to the starter noise, while the engine is cranking. Compare the concern to a similar vehicle.

### Circuit/System Testing

1. Remove the starter motor. Refer to Starter Motor Replacement.
2. Inspect the starter motor for any signs of damage or wear.
3. Inspect the flywheel for the following:

• | Loose flywheel bolts

• | Chipped gear teeth

• | Missing gear teeth

• | Bent flywheel

• | Debris in the bell housing

⇒ | If not within specifications, tighten the flywheel bolts, repair or replace the flywheel.

4. If all inspections were within specification, replace the starter motor.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Fastener Tightening Specifications for the 2.0L (LNF) engine

• | Fastener Tightening Specifications for the 2.2L (L61) and 2.4L (LE5) engines

• | Engine Flywheel Replacement for the 2.0L (LNF) engine

• | Engine Flywheel Replacement for the 2.2L (L61) and 2.4L (LE5) engines

• | Starter Motor Replacement