Toyota Tacoma 2015-2018 Service Manual: Steering Angle Sensor Internal Circuit (C1433)

Toyota Tacoma 2015-2018 Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / Steering Angle Sensor Internal Circuit (C1433)

DESCRIPTION

Steering angle sensor (spiral cable with sensor sub-assembly) signals are sent to the skid control ECU (master cylinder solenoid) via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor (spiral cable with sensor sub-assembly) 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 (master cylinder solenoid) 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 with sensor sub-assembly)

WIRING DIAGRAM

Refer to DTC C1432 (See page CAUTION / NOTICE / HINT ).

CAUTION / NOTICE / HINT

HINT:

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

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Check for DTCs (See page Result ).

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 STEERING ANGLE SENSOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY)

(a) Replace the steering angle sensor (spiral cable with sensor sub-assembly) (See page ).

END

Steering Angle Sensor Power Source Voltage Malfunction (C1432)

DESCRIPTION Steering angle sensor (spiral cable with sensor sub-assembly) signals are sent to the skid control ECU (master cylinder solenoid) via the CAN communication system. When there is a mal ...

Steering Angle Sensor Output Malfunction (C1434)

DESCRIPTION Steering angle sensor (spiral cable with sensor sub-assembly) signals are sent to the skid control ECU (master cylinder solenoid) via the CAN communication system. When there is a mal ...

Other materials:

Additional Key cannot be Registered
DESCRIPTION If additional registration is not possible, a malfunction in the certification ECU (smart key ECU assembly), engine switch, electrical key transmitter sub-assembly or steering lock ECU (steering lock actuator or UPR bracket assembly) is suspected. CAUTION / NOTICE / HINT NOTICE ...

AUTO LSD Indicator Light Remains ON
DESCRIPTION During normal mode, pressing the VSC OFF switch for a short amount of time changes vehicle to AUTO LSD mode. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When replacing the brake actuator assembly, perform calibration (See page ). PROCEDURE 1. CHECK ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT RADIATOR CAP SUB-ASSEMBLY CAUTION: Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns. (a) Measure the valve opening pr ...