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)	Power switch on (IG)	11 to 14 V
G35-2 (IG+) - G35-4 (GND)	LA-GR - W-B	Power source (IG)	Power switch off	Below 1 V
G35-1 (B) - G35-4 (GND)	LA-B - W-B	Auxiliary battery power supply	Power switch off	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	Power 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	Power 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 > Charging System: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Charging System DTC No. Detection Item Warning Indicate Memory Note Link P161A87 Lost Communication with Alternator Missing Message Charge warning is not displayed DTC stored SAE Code: P161A ...

Toyota Avalon (XX50) 2019-2022 Owners Manual