Repair and Diagnosis: Electrical: Starter: Description
A Bosch permanent magnet gear reduction starter is used on 2.2L and 2.5L 4-cylinder and some 3.0L V6 engines. A Melco permanent magnet gear reduction starter is used on 3.5L V6 engine. Both Bosch and Melco starters use a planetary gear train that transmits power from starter motor to pinion shaft. Six permanent magnets are used, eliminating potential field wire-to-frame shorts. A Nippondenso field coil gear reduction starter is used on models with 3.3L and 3.8L V6 engines and some models with 3.0L V6 engines.
All models use a starter relay in starter circuit between battery and starter solenoid terminal. Automatic Transmission (A/T) equipped vehicles use a neutral safety switch to provide ground path for starter relay. Manual Transmission (M/T) equipped vehicles use a clutch pedal interlock switch to provide battery voltage from ignition switch to starter relay. See Fig 1 .