Toyota Avalon Service & Repair Manual: Steering Angle Sensor Failure (C1626)

DESCRIPTION

This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates an internal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1626

Steering Angle Sensor Failure

A fail flag is transmitted from the steering sensor

  • Steering sensor
  • Clearance warning ECU assembly

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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  • When continuing with the inspection, confirm that the necessary procedures (adjustment, calibration, initialization or registration) have been completed before proceeding.

PROCEDURE

1.

REPLACE STEERING SENSOR

(a) Replace the steering sensor with a new or known good one.

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NEXT

2.

CHECK DTC OUTPUT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

(b) Clear the DTCs according to the screen on the Techstream.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs

(c) Recheck for DTCs.

Result

Proceed to

DTC C1626 is output

A

DTC C1626 is not output

B

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (STEERING SENSOR DEFECTIVE)

    Open or Short in Steering Angle Sensor +B (C1625)

    G Sensor Failure (C1647)

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