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	Auxiliary battery power supply	Power switch off	11 to 14 V
O3-6 (IG) - O3-2 (E)	LA-GR - W-B	IG power supply	Power switch off	Below 1 V
O3-6 (IG) - O3-2 (E)	LA-GR - W-B	IG power supply	Power 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	Power switch on (IG), OPEN switch on	Below 1 V
O3-10 (OPN) - O3-2 (E)	W - W-B	Sliding roof motor open	Power switch on (IG), OPEN switch off	11 to 14 V
O3-8 (CLS) - O3-2 (E)	SB - W-B	Sliding roof motor close	Power switch on (IG), CLOSE switch on	Below 1 V
O3-8 (CLS) - O3-2 (E)	SB - W-B	Sliding roof motor close	Power switch on (IG), CLOSE switch off	11 to 14 V
O3-5 (UP) - O3-2 (E)	R - W-B	Sliding roof motor up	Power switch on (IG), UP switch on	Below 1 V
O3-5 (UP) - O3-2 (E)	R - W-B	Sliding roof motor up	Power switch on (IG), UP switch off	11 to 14 V
O3-9 (DWN) - O3-2 (E)	LG - W-B	Sliding roof motor down	Power switch on (IG), DOWN switch on	Below 1 V
O3-9 (DWN) - O3-2 (E)	LG - W-B	Sliding roof motor down	Power 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 > Wiper And Washer System(for Hv Model): Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Departure Alert System (w/ Ste ...

Toyota Avalon (XX50) 2019-2022 Owners Manual