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

DESCRIPTION

This circuit is the power source circuit to operate the parking assist ECU. The parking assist ECU controls the panoramic view monitor system.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

HINT:

If the parking assist ECU does not operate due to a power source problem, other system DTCs may be stored due to a CAN communication interruption.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BODY GROUND)

(a) Disconnect the K35 parking assist ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
K35-3 (GND1) - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU POWER SOURCE)

(a) Disconnect the K35 parking assist ECU connector.

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

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 > Airbag System(for Gasoline Model): Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Airbag System DTC No. Detection Item Warning Indicate Test Mode / Check Mode Link B1160 Airbag ECU Malfunction1 Comes on Does not apply to test/check mode B1161 Airbag ECU Malfunction2 Comes on Does not apply to test/check mode B1162 Airbag ECU Malfunction3 Comes on Doe ...

Toyota Avalon (XX50) 2019-2022 Owners Manual