Section 339 (Stop Light System): Inspection

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STOP LIGHT SWITCH CONTINUITY

SWITCH POSITION SPECIFICATION

Switch position	Tester connection	Specified condition
Switch pin free (Pedal depressed)	1 - 2	Continuity
Switch pin pushed in (Pedal released)	-	No continuity
Switch pin free (Pedal depressed)	-	No continuity
Switch pin pushed in (Pedal released)	3-4	Continuity

If continuity is not as specified, replace the switch.

Fig 1: Identifying Pushing Switch

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 Wire Harness Side

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CONNECTION SPECIFICATION

Tester connection	Condition	Specified condition
2 - Ground	Always	Battery positive voltage

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

w/o REAR SPOILER: INSPECT HI-MOUNTED STOP LIGHT CONTINUITY
Using an ohmmeter, check that continuity exists between terminals.

If continuity is not as specified, replace the light assembly.

Fig 3: Identifying Connector W/O Rear Spoiler
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

w/o REAR SPOILER: INSPECT HI-MOUNTED STOP LIGHT CIRCUIT

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

Fig 4: Identifying Connector W/O Rear Spoiler Wire Harness Side

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SPECIFICATION CONNECTION

Tester connection	Condition	Specified condition
2 - Ground	Always	Continuity

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

w/ REAR SPOILER: INSPECT HI-MOUNTED STOP LIGHT CONTINUITY
Using an ohmmeter, check that continuity exists between terminals.

If continuity is not as specified, replace the light assembly.

Fig 5: Identifying Connector W/ Rear Spoiler Connector Wire Harness Side (1 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

w/ REAR SPOILER: INSPECT HI-MOUNTED STOP LIGHT CIRCUIT

Disconnect the connector from the light and inspect the connector on the wire harness side.

Fig 6: Identifying Connector W/ Rear Spoiler Connector Wire Harness Side (2 Of 2)

SPECIFICATION CONNECTION

Tester connection	Condition	Specified condition
2 - Ground	Always	Continuity

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