Description & Operation

All models use Nippondenso 4-brush, solenoid-actuated, reduction gear type starters, equipped with overrunning clutches. The brush holder assembly retains 4 brushes and springs in the starter housing.

Reduction gear type starters contain an integral solenoid attached to drive housing, a reduction idler gear and bearing installed into starter housing, and a clutch drive assembly. The clutch drive assembly is mounted to starter housing and is driven by the reduction idler gear from armature shaft. The brush holder assembly retains 4 brushes and 4 springs in the end cover of field frame housing.

All models use a starter relay to energize starter. Manual transmission vehicles use a clutch start switch and automatic transmission vehicles use a park/neutral switch to energize starter relay. On models with theft deterrent system, theft deterrent system ECU provides ground for starter relay.

Tacoma, Tundra and 4Runner models with 4WD and M/T use an optional clutch start cancel switch. When this switch is turned on, it will allow engine to be started without depressing clutch pedal when transmission is in Neutral. This allows vehicle to be driven out of difficult situations by cranking the engine with the clutch engaged.