LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1995 >> SC 400 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Steering Column Switches >> Component Testing >> Light Control Switch Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Light Control Switch Test

Remove steering column covers. Disconnect electrical connectors from combination switch. Check for continuity between specified terminals of combination switch connector. See Fig 1. See appropriate LIGHT CONTROL SWITCH CONTINUITY TEST TABLE . If there is no continuity, replace switch.

LIGHT CONTROL SWITCH CONTINUITY TEST

Switch Position Terminals
Headlight/Taillight Switch
Off (1)
Tail B3 & B4
Head B3, B4 & B13
Auto B4 & B12
Dimmer Switch
Flash-To-Pass B7, B9 & B18
Low Beam (1)
High Beam B9 & B18
Turn Signal Switch
Left A4 & A12
Neutral (1)
Right A3 & A12
Cornering Light Switch
Left A8 & A10
Neutral (1)
Right A8 & A11
(1) Continuity should not exist between any terminals.
Fig 1: Identifying Combination Switch Connector Terminals
G93I01683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002