Toyota 4Runner manuals

Toyota 4Runner: Steering Angle Sensor Unusual Bank Angle Detected (C1440)

Toyota 4Runner Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / Steering Angle Sensor Unusual Bank Angle Detected (C1440)

DESCRIPTION

If the skid control ECU determines that the vehicle is being driven at a steep bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily disabled.

It is not a malfunction if the system and sensor circuits are normal and if the normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.

HINT:

DTC C1440 and the yaw rate and acceleration sensor DTC are stored when the skid control ECU determines that the vehicle is being driven at a steep bank angle and either of the following conditions is met:

  • The yaw rate and acceleration sensor is installed at an angle.
  • The yaw rate and acceleration sensor signal output is stuck.

DTC Code

DTC Detection Condition

Trouble Area

C1440

Driving at a steep bank angle.

Yaw rate and acceleration sensor

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs (See page ).


(b) Perform a road test.

(c) Check if the same DTC is output (See page
).

Result

Result

Proceed to

DTC C1440 is output

A

DTC C1440 is not output

B

Yaw rate and acceleration sensor DTC is output

C

B

END

C

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

A

2.

CLEAR DTC

(a) Clear the DTCs (See page ).


HINT:

  • If the skid control ECU determines that the vehicle is being driven at a steep bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily disabled.
  • It is not a malfunction if the system and sensor circuits are normal and if the normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.

NEXT

END
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