Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Terminals Of Ecu

TERMINALS OF ECU

CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

(a) Disconnect the O3 sliding roof ECU (sliding roof drive gear assembly) connector.

(b) Measure the resistance and voltage according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
O3-1 (B) - O3-2 (E)	B - W-B	Battery power supply	Always	11 to 14 V
O3-6 (IG) - O3-2 (E)	LA-GR - W-B	IG power supply	Engine switch off	Below 1 V
O3-6 (IG) - O3-2 (E)	LA-GR - W-B	IG power supply	Engine switch on (IG)	11 to 14 V
O3-2 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

(d) Measure the voltage according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
O3-10 (OPN) - O3-2 (E)	W - W-B	Sliding roof motor open	Engine switch on (IG), OPEN switch on	Below 1 V
O3-10 (OPN) - O3-2 (E)	W - W-B	Sliding roof motor open	Engine switch on (IG), OPEN switch off	11 to 14 V
O3-8 (CLS) - O3-2 (E)	SB - W-B	Sliding roof motor close	Engine switch on (IG), CLOSE switch on	Below 1 V
O3-8 (CLS) - O3-2 (E)	SB - W-B	Sliding roof motor close	Engine switch on (IG), CLOSE switch off	11 to 14 V
O3-5 (UP) - O3-2 (E)	R - W-B	Sliding roof motor up	Engine switch on (IG), UP switch on	Below 1 V
O3-5 (UP) - O3-2 (E)	R - W-B	Sliding roof motor up	Engine switch on (IG), UP switch off	11 to 14 V
O3-9 (DWN) - O3-2 (E)	LG - W-B	Sliding roof motor down	Engine switch on (IG), DOWN switch on	Below 1 V
O3-9 (DWN) - O3-2 (E)	LG - W-B	Sliding roof motor down	Engine switch on (IG), DOWN switch off	11 to 14 V

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Lighting System(for Gasoline Model): Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Lighting system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. CHECK DLC3 (a) Check the DLC3. Cli ...

Toyota Avalon (XX50) 2019-2022 Owners Manual