Ignition Switch

Disconnect electrical connector from ignition switch on bottom of upper steering column bracket. See Fig 1. Note ignition switch electrical terminals and ignition lock cylinder positions. See Fig 2-Fig 4 .

Using ohmmeter, check that continuity is as specified between indicated ignition switch electrical terminals in relation to ignition lock cylinder position. See IGNITION SWITCH CONTINUITY table. Replace ignition switch if defective. See IGNITION SWITCH under ENGINE SENSORS & SWITCHES in REMOVAL & INSTALLATION - 4-CYLINDER article.

IGNITION SWITCH CONTINUITY

Application

Ign. Lock Cylinder Position

Ign. Switch Terminals

Specification

Camry, Camry Solara & Prius & Tacoma

LOCK

⁽¹⁾

ACC

2 & 3

Continuity

2, 3 & 4; 6 & 7

Continuity

START

1, 2 & 4; 6, 7 & 8

Continuity

Celica, Corolla, ECHO, Highlander, MR2 & RAV4

LOCK

⁽¹⁾

ACC

1 & 3

Continuity

1, 2 & 3; 5 & 6

Continuity

START

1 & 2; 4, 5 & 6

Continuity

⁽¹⁾	There should be no continuity between any terminals.

Fig 1: Locating Typical Ignition Switch

Fig 2: Identifying Ignition Switch Electrical Terminals & Ignition Lock Cylinder Positions (Camry, Camry Solara, Corolla, Matrix & Prius)

Fig 3: Identifying Ignition Switch Electrical Terminals & Ignition Lock Cylinder Positions (Celica, ECHO, Highlander, MR2 & RAV4)

Fig 4: Identifying Ignition Switch Electrical Terminals & Ignition Lock Cylinder Positions (Tacoma)