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

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Park Assist / Monitoring / Intelligent Clearance Sonar System(for Gasoline Model) / Open or Short in Steering Angle Sensor +B (C1625)

DESCRIPTION

This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates a power supply problem.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1625

Open or Short in Steering Angle Sensor +B

Open or short in steering sensor power source
  • Harness or connector
  • Steering sensor

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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  • After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

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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.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G48-9 (IG1) - G48-6 (ESS)

Engine switch on (IG)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

2.

CHECK HARNESS AND CONNECTOR (STEERING SENSOR POWER SOURCE)

(a) 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

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G48-4 (BAT) - G48-6 (ESS)

Always

11 to 14 V
OK

REPLACE STEERING SENSOR

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    ECU Malfunction (C1611)

    Steering Angle Sensor Failure (C1626)

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