Toyota Tundra Service Manual: Steering Angle Sensor (C1A47)

Toyota Tundra Service Manual / Engine, Hybrid System / Cruise Control / Lane Departure Alert System / Steering Angle Sensor (C1A47)

DESCRIPTION

The forward recognition camera receives steering angle information from the spiral with sensor cable sub-assembly. If the forward recognition camera detects a spiral with sensor cable sub-assembly, DTC C1A47 is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1A47	Steering Angle Sensor	When the vehicle is being driven at a speed of 5 km/h (3 mph) or more 3 seconds after the ignition switch is turned to ON, a signal from the spiral with sensor cable sub-assembly indicating that there is a spiral with sensor cable sub-assembly malfunction is detected by the forward recognition camera for 5 seconds or more.	Vehicle stability control system Spiral with sensor cable sub-assembly Forward recognition camera

CAUTION / NOTICE / HINT

NOTICE:

When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
If the forward recognition camera has been replaced with a new one, be sure to perform forward recognition camera learning.
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First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.
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PROCEDURE

1.	CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM)

HINT:

If the steering angle sensor is malfunctioning, DTCs for the vehicle stability control system will be stored. Troubleshoot the vehicle stability control system first.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Check for DTCs.

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Result	Proceed to
Vehicle stability control system DTCs are not output	A
Vehicle stability control system DTCs are output	B

GO TO VEHICLE STABILITY CONTROL SYSTEM

2.	CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

(e) Clear the DTCs.

(f) Make sure that the DTC detection conditions are met.

HINT:

If the following procedure is not performed, the previously output DTC cannot be detected.

(g) Check for DTCs.

Result	Proceed to
DTC C1A47 is output	A
DTC C1A47 is not output	B

USE SIMULATION METHOD TO CHECK

3.	REPLACE FORWARD RECOGNITION CAMERA

(a) Replace the forward recognition camera.

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(b) Adjust the forward recognition camera.

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4.	CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

(e) Clear the DTCs.

(f) Make sure that the DTC detection conditions are met.

HINT:

If the following procedure is not performed, the previously output DTC cannot be detected.

(g) Check for DTCs.

Result	Proceed to
DTC C1A47 is output	A
DTC C1A47 is not output	B

REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)

Lane Departure Alert System

Front Camera Module Circuit (C1AA0)

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