Description & Operation

WARNING: This page is about a different car, the 2004 Toyota 4Runner and 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

Models with 4.0L V6 may be equipped with 1.6 Kilowatt or 2.0 Kilowatt starters:

1.6 Kilowatt Starters

1.6 kilowatt starters are compact and lightweight Planetary reduction-segment conductor motor (PS).
PS starters use a square wire coil. The shape of the wire allows the surface area to act as a commutator would in traditional round wire coil starters. Elimination of the traditional commutator lightens and shortens the starter.
Permanent magnets are used to fulfil the traditional role of a field coil. The permanent magnets are classified using two types, main magnets and interpolar magnets. The magnets are arranged alternately inside the yoke to increase magnetic flux and to shorten the length of the yoke.
Integration of square shaped conductors and permanent magnets, results in improvement of torque output, and shortening overall length.
Starter relay is used to energize starter. It also uses a park/neutral switch on automatic transmission models to provide the circuit to energize starter relay.

2.0 Kilowatt Starters

2 kilowatt starters are 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.
Starter relay is used to energize starter. It also uses a park/neutral switch on automatic transmission models to provide the circuit to energize starter relay.

Models with 4.7L V8 engines use a 1.4 or 2 kilowatt 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.

Starter relay is used to energize starter. It also uses a park/neutral switch on automatic transmission models to provide the ground circuit to energize starter relay.