Toyota 4Runner: Steering Angle Sensor Internal Circuit (C1433)

Toyota 4Runner Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / Steering Angle Sensor Internal Circuit (C1433)

DESCRIPTION

Steering angle sensor signals are sent to the skid control ECU via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor zero point malfunction diagnostic function.

DTC Code	DTC Detection Condition	Trouble Area
C1433	Either condition is met: With the IG1 terminal voltage at 9.5 to 17.4 V, the skid control ECU receives an error signal from the steering angle sensor for 0.012 seconds. An open in the sensor power supply circuit for 1 second or more.	Steering angle sensor (Spiral cable sub-assembly)

WIRING DIAGRAM

Refer to DTC C1432 (See page ).

CAUTION / NOTICE / HINT

HINT:

When any of the speed sensors or the yaw rate and acceleration sensor has trouble, DTCs for the steering angle sensor may be stored even when the steering angle sensor is normal. When DTCs for the speed sensors or yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate and acceleration sensor first, and then inspect and repair the steering angle sensor.

PROCEDURE

CHECK DTC

(a) Check for DTCs (See page ).

Result

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output	B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

2.	REPLACE SPIRAL CABLE SUB-ASSEMBLY

(a) Replace the spiral cable sub-assembly (See page ).

NOTICE:

Do not remove the steering angle sensor from the spiral cable.
When replacing the spiral cable, confirm that the replacement part is of the correct specification.

END

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