Toyota Tacoma (2015-2018) Service Manual: Steering Angle Sensor (C1A47)

Toyota Tacoma (2015-2018) Service Manual / Cruise Control / Forward Recognition Camera System / Steering Angle Sensor (C1A47)

DESCRIPTION

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1A47	Steering Angle Sensor	3 seconds after the ignition switch is turned to ON, a signal from the spiral cable with sensor sub-assembly indicating that there is a spiral cable with sensor sub-assembly malfunction is detected by the forward recognition camera for 5 seconds or more.	Vehicle stability control system Spiral cable with sensor 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 Axis Adjustment.
Click here
The forward recognition camera system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Click here

PROCEDURE

1.	CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM)

HINT:

Forward recognition camera system DTC C1A47 may be stored due to a malfunction in the vehicle stability control system. Therefore it is necessary to check for and troubleshoot vehicle stability control system DTCs first.

(a) Check for DTCs.

for Vacuum Brake Booster
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for Hydraulic Brake Booster
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Result	Proceed to
Vehicle stability control system DTCs are not output	A
Vehicle stability control system DTCs are output (for Vacuum Brake Booster)	B
Vehicle stability control system DTCs are output (for Hydraulic Brake Booster)	C

GO TO VEHICLE STABILITY CONTROL SYSTEM

2.	CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)

(a) Clear the DTCs.

Click here (b) Make sure that the DTC detection conditions are met.

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

HINT:

If the conditions are not met, the system cannot detect the malfunction.

Click here

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

USE SIMULATION METHOD TO CHECK

3.	REPLACE FORWARD RECOGNITION CAMERA

(a) Replace the forward recognition camera.

Click here (b) Perform forward recognition camera axis adjustment.

(b) Perform forward recognition camera axis adjustment.

Click here

4.	CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)

(a) Clear the DTCs.

Click here (b) Make sure that the DTC detection conditions are met.

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

HINT:

If the conditions are not met, the system cannot detect the malfunction.

Click here

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

END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)

REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

Front Radar Sensor Region Code Mismatch (C1A0A)

DESCRIPTION The forward recognition camera receives necessary information from the millimeter wave radar sensor assembly. When the forward recognition camera judges that a millimeter wave radar se ...

Front Camera Module Circuit (C1AA0)

DESCRIPTION When an internal malfunction is detected in the forward recognition camera, DTC C1AA0 is stored. DTC No. Detection Item DTC Detection Condition ...

Other materials:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE FRONT OIL PUMP BODY O-RING (a) Remove the front oil pump body O-ring from the oil pump assembly. 2. SECURE OIL PUMP ASSEMBLY (a) Place the oil pump assembly on the torque converter assembly. ...

Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) Whenever a lane departure alert system is stored, the forward recognition camera stores the current vehicle state (ECU and sensor information) as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch ...

Symbols used in illustrations
The symbol of a circle with a slash through it means “Do not”, “Do not do this”, or “Do not let this happen”. Arrows indicating operations Indicates the action (pushing, turning, etc.) used to operate switches and other devices. Indicates the outcome of an operation (e.g. a ...