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

CHECK DTC

(a) Clear the DTCs (See page ).

(b) Perform a road test.

Result

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

END

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

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.

END

Steering Angle Sensor Initialization Incomplete (C1439,C1445)

DESCRIPTION The skid control ECU acquires steering angle sensor zero point every time the ignition switch is turned to ON and the vehicle is driven at 40 km/h (25 mph) or more for approximately 1 ...

Invalid Data Received from Deceleration Sensor (C1442,C1443)

DESCRIPTION The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system. DTC Code DTC Detection Condition Trou ...

Other materials about Toyota 4Runner:

Mayday Battery
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page ). 2. REMOVE MA ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK FOR DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes. (e) Check for DTCs. 2. CLEAR DTC ...