VEHICLE STABILITY CONTROL SYSTEM(for Hydraulic Brake Booster), Diagnostic DTC:C1440

DTC Code	DTC Name
C1440	Steering Angle Sensor Unusual Bank Angle Detected

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.

Tech Tips

DTC C1440 and the yaw rate and acceleration sensor (airbag sensor assembly) 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 (airbag sensor assembly) is installed at an angle.
The yaw rate and acceleration sensor (airbag sensor assembly) signal output is stuck.

DTC Code	DTC Detection Condition	Trouble Area
C1440	Driving at a steep bank angle	Yaw rate and acceleration sensor (Airbag sensor assembly)

PROCEDURE

CHECK DTC

Clear the DTCs Click here.
Perform a road test.

Check if the same DTC is output Click here.

Result
Result	Proceed to
DTC C1440 is output	A
DTC C1440 is not output	B
Yaw rate and acceleration sensor (airbag sensor assembly) DTC is output	C

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REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

CLEAR DTC
1. Clear the DTC Click here.
  Tech Tips
  - If the skid control ECU (master cylinder solenoid) determines that the vehicle is being driven at a steep bank angle, the skid control ECU (master cylinder solenoid) 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.
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