Specifications
| Description | Nm |
|---|---|
| Starter motor bolts - vehicles fitted with 2.5L or 3.0L engine | 25 |
| Starter motor bolts - vehicles fitted with 2.7L Diesel engine | 48 |
| Starter motor bolts - vehicles fitted with 4.2L engine | 45 |
| Battery positive terminal integral connector retaining nut - vehicles fitted with 2.5L, 2.7L Diesel or 3.0L engine | 13 |
| Battery positive terminal integral connector retaining nut - vehicles fitted with 4.2L engine | 10 |
| Solenoid terminal integral connector nut | 7 |
Torque Specifications
The function of the starting system is to crank the engine fast enough to allow the engine to start. Heavy cables, connectors and switches are used in the system because of the large currents required.
The starting system consists of a pre-engaged type starter motor, battery, remote control switch (ignition switch) and relay. When the starter is operated from the ignition switch, the engagement lever moves the pinion into mesh with the engine ring gear teeth, the electrical contacts within the solenoid complete the high power circuit and the starter motor operates to turn the engine.
Vehicles equipped with automatic transmission have a transmission range sensor attached to the circuit which prevents operation of the starter motor unless NEUTRAL or PARK are selected.
The sequence of operation is as follows
- Ignition switch in the start position III.
- Starter relay activated.
- Voltage provided to the starter motor solenoid.
- Starter solenoid engages the drive pinion to the flywheel or flexplate.
- Starter solenoid switches the battery current to the starter motor.
- System remains engaged until the ignition switch is returned to the run position.
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical and electrical damage. Visual Inspection Chart Mechanical Electrical Starter Motor. Battery. Fuse 27 (30A) Front power distribution box Fuse 1 (5A) Primary junction box Starter relay. Fuse 15 (5A) Primary junction box Transmission control module (TCM) Engine control module (ECM) Wiring harness(es). Damaged, loose or corroded connectors
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the concern is not visually evident, verify the symptom and refer to «Symptom Chart»(ref-311323-S26186558992009032500000) .
| Condition | Possible Source | Action |
|---|---|---|
| The engine does not crank | Battery Starter motor Starter relay Ignition switch Transmission control module (TCM) ECM | GO to Pinpoint Test A |
| Engine cranks slowly | Battery Circuitry Starter motor | GO to Pinpoint Test B |
| Unusual starter motor noise | Starter motor Flywheel ring gear | CHECK flywheel or flexplate. For additional information, refer to Engine System - General Information article. INSPECT starter motor for alignment, cracked case. Make sure the mounting bolts are tightened. If necessary, INSTALL a new starter motor. |
| The starter spins but the engine does not crank | Starter motor | INSPECT the flywheel or flexplate for missing teeth. CHECK starter motor for correct mounting. If concern persists, INSTALL a new starter motor. |
Symptom Chart