Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Steering Angle Sensor Unusual Bank Angle Detected (C1440)

DESCRIPTION

If the skid control ECU (brake booster with master cylinder assembly) determines that the vehicle is being driven at a steep bank angle, the skid control ECU (brake booster with master cylinder assembly) stores DTC C1440 while VSC operation is temporarily disabled.

This is not a malfunction if the system and sensor circuits are normal and normal VSC operation resumes.

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

MIL

Note

C1440

Steering Angle Sensor Unusual Bank Angle Detected

1157

Driving at a steep bank angle.

Yaw rate sensor (airbag ECU assembly)

Does not come on

VSC DTC

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Click here

Chassis > ABS/VSC/TRAC > Clear DTCs

(b) Turn the power switch off.

(c) Turn the power switch on (READY).

(d) Perform a road test.

(e) Check if the same DTC is output.

Click here

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

DTC C1440 is output.

A

Yaw rate and acceleration sensor DTCs are output.

B

DTC C1440 is not output.

C

B

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

C

END (VSC TEMPORARILY DISABLED)

A

2.

CLEAR DTC

(a) Clear the DTCs.

Click here

Chassis > ABS/VSC/TRAC > Clear DTCs
NEXT

END

    Steering Angle Sensor Initialization Incomplete (C1439,C1445)

    Invalid Data Received from Deceleration Sensor (C1442,C1443)

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