Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the radio and display receiver assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE)

(a) Disconnect the G3 and G2 radio and display receiver assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G3-1 (GND1) - Body ground	Always	Below 1 Ω

Standard Voltage:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Dynamic Radar Cruise Control System(for Gasoline Model): Driving Support ECU Communication Abnormal (C1A52)
DESCRIPTION The DTC C1A52 is stored when the ECM cannot recognize the driving support ECU assembly. DTC No. Detection Item DTC Detection Condition Trouble Area MIL C1A52 Driving Support ECU Communication Abnormal Approximately 17 seconds after the engine switch is turned on (IG), the ECM cannot reco ...

Toyota Avalon (XX50) 2019-2022 Owners Manual