Section 439 (Stop Light System): Inspection

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STOP LIGHT SWITCH CONTINUITY

SPECIFIED CONDITION

Switch position	Tester connection	Specified condition
Switch pin free	-	Continuity
Switch pin pushed in	1 - 2	Continuity

If continuity is not as specified, replace the switch.

Fig 1: Identifying Stop Light Switch Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT STOP LIGHT SWITCH CIRCUIT

Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown.

Fig 2: Inspecting Connector On Wire Harness Side

SPECIFIED CONDITION

Tester connector	Condition	Specified condition
2 - Ground	Constant	Battery positive voltage

If circuit is not as specified, inspect the power source or wire harness.