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

TERMINALS OF ECU

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

(a) Disconnect the G35 air conditioning amplifier assembly connector.

(b) Measure the voltage and resistance 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
G35-2 (IG+) - G35-4 (GND)	LA-GR - W-B	Power source (IG)	Engine switch on (IG)	11 to 14 V
G35-2 (IG+) - G35-4 (GND)	LA-GR - W-B	Power source (IG)	Engine switch off	Below 1 V
G35-1 (B) - G35-4 (GND)	LA-B - W-B	Battery power supply	Always	11 to 14 V
G35-4 (GND) - 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
G35-5 (RDFG) - G35-4 (GND)	L - W-B	Rear window defogger signal	Engine switch on (IG), rear window defogger switch off	11 to 14 V
G35-5 (RDFG) - G35-4 (GND)	L - W-B	Rear window defogger signal	Engine switch on (IG), rear window defogger switch on	Below 1 V

CHECK REAR WINDOW DEFOGGER SWITCH (RADIO AND DISPLAY RECEIVER ASSEMBLY)

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Actuator Supply Voltage "A" Circuit Short to Ground or Open (P065714)
DESCRIPTION The electronic throttle control system has a dedicated power supply circuit. The voltage (+BM) is monitored and when it is low (less than 4 V), the ECM determines that there is a malfunction in the electronic throttle control system and cuts off the current to the throttle actuator. When ...

Toyota Avalon (XX50) 2019-2022 Owners Manual