Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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:

  1. 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.
  2. 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

B

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

A

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 ).

NEXT

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:

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN and multiplex communication system. *: Use the Techstream. PROCEDURE ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT DRIVE BELT (a) Visually check the belt for defects, such as excessive wear and frayed cords. If any defects are found, replace the drive belt. HINT: Replace the belt if there are any missing ribs. 2. BLEED POWER STEERING SYSTEM (a) Check the fluid ...

Removal
REMOVAL PROCEDURE 1. REMOVE REAR WHEEL 2. DRAIN BRAKE FLUID HINT: Immediately wash off any brake fluid that comes into contact with any painted surfaces. 3. REMOVE REAR BRAKE DRUM SUB-ASSEMBLY (a) Release the parking brake, and remove the rear brake drum. If the rear brake drum cannot be ...

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