Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK REAR SUNSHADE RELAY

Fig 1: Identifying Rear Sunshade Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the L24 relay connector.

Measure the voltage and resistance of the wire harness side connector.

VOLTAGE SPECIFICATION

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
IG (L24-1) - E (L24-5)	R - W-B	Power source (IG)	Engine switch off	Below 1 V
IG (L24-1) - E (L24-5)	R - W-B	Power source (IG)	Engine switch on (IG)	10 to 14 V
SW (L24-3) - E (L24-5)	SB - W-B	Rear sunshade switch signal	Engine switch on (IG), rear sunshade switch OFF	10 kΩ or higher
SW (L24-3) - E (L24-5)	SB - W-B	Rear sunshade switch signal	Engine switch on (IG), rear sunshade switch ON	Below 1 Ω
E (L24-5) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction in the wire harness side connector.

Connect the L24 relay connector.

Measure the voltage of the wire harness side connector.

VOLTAGE SPECIFICATION

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
REV (L24-2) - Body ground	P - W-B	Reverse signal	Engine switch on (IG), shift lever not in R	Below 1 V
REV (L24-2) - Body ground	P - W-B	Reverse signal	Engine switch on (IG), shift lever in R	10 to 14 V
SW (L24-3) - Body ground	SB - W-B	Rear sunshade switch signal	Engine switch on (IG), rear sunshade switch not pushed	10 to 14 V
SW (L24-3) - Body ground	SB - W-B	Rear sunshade switch signal	Engine switch on (IG), rear sunshade switch pushed	Below 1.5 V

If the result is not as specified, there may be a malfunction in the wire harness side connector.