Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Open or Short in Steering Angle Sensor +B (C1625)

DESCRIPTION

This DTC is stored if the parking assist ECU receives a signal via CAN communication from the steering sensor that indicates a power supply system problem.
This DTC is stored if the television camera assembly receives a signal via CAN communication from the steering sensor that indicates a power supply system problem.

Parking Assist ECU

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from
C1625	Open or Short in Steering Angle Sensor +B	Open or short in steering angle sensor +B	Harness or connector Steering sensor	Parking assist ECU

Television Camera Assembly

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from
C1625	Open or Short in Steering Angle Sensor +B	Open or short in steering angle sensor +B	Harness or connector Steering sensor	Television camera assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Since the panoramic view monitor system has functions that use the CAN communication system, first check that there is no malfunction in the communication system by inspecting the CAN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.
When "!" is displayed on the radio and display receiver assembly after the cable is disconnected from the negative (-) auxiliary battery terminal, correct the steering angle neutral point.
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Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the panoramic view monitor system may be needed.
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Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (STEERING SENSOR POWER SOURCE)

(a) Disconnect the G48 steering sensor connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G48-6 (ESS) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
G48-9 (IG) - G48-6 (ESS)	Power switch on (IG)	11 to 14 V
G48-4 (BAT) - G48-6 (ESS)	Always	11 to 14 V

REPLACE STEERING SENSOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Power Steering System(for Gasoline Model): Fail-safe Chart
FAIL-SAFE CHART If a problem occurs in the power steering system, the power steering assist will be stopped or the amount of power assist will be decreased to protect the system. Power Steering System Malfunction Fail-safe Operation EPS warning light Buzzer Torque sensor (rack and pinion power steer ...

Toyota Avalon (XX50) 2019-2022 Owners Manual