Toyota Tacoma manuals

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

DESCRIPTION

The millimeter wave radar sensor assembly receives steering angle information from the steering angle sensor (spiral cable with sensor sub-assembly). If the millimeter wave radar sensor assembly detects a steering angle sensor (spiral cable with sensor sub-assembly) malfunction, DTC C1A47 will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A47

Steering Angle Sensor

While the vehicle is being driven at a speed of 50 km/h (32 mph) or more, the millimeter wave radar sensor assembly receives a steering angle sensor (spiral cable with sensor sub-assembly) malfunction signal continuously for 1 second or more.

  • Vehicle stability control system
  • Millimeter wave radar sensor assembly

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle. As a result, a DTC may be stored.
  • If the millimeter wave radar sensor assembly has been replaced, be sure to perform millimeter wave radar sensor assembly adjustment.

    Click here

  • The pre-collision 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:

Pre-collision 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.

Click here

Result

Proceed to

Vehicle stability control system DTCs are not output

A

Vehicle stability control system DTCs are output

B

B

GO TO VEHICLE STABILITY CONTROL SYSTEM

A

2.

CHECK FOR DTCs (PRE-COLLISION 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 detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Click here

Result

Proceed to

DTC C1A47 is not output

A

DTC C1A47 is output

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Stop Light Relay Circuit (C1A4B)
DESCRIPTION The skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 sends a stop light operation request signal to the stop light relay (stop light switc ...

Front Radar Sensor Incorrect Axial Gap (C1A11)
DESCRIPTION When the vehicle is determined to be driving in a straight line or on a gradual curve based on signals from the yaw rate sensor, etc., the millimeter wave radar sensor assembly perfor ...

Other materials:

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR DIFFERENTIAL DRIVE PINION BEARING SPACER (a) Install a new front differential drive pinion bearing spacer. HINT: Make sure the front differential drive pinion bearing spacer is installed correctly. 2. INSTALL DIFFERENTIAL OIL STORAGE RING (a) Using a bra ...

Open or Short in Master Cylinder Pressure Sensor (C1421,C1423,C1424,C142A,C1449)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area C1421 Open or Short in Master Cylinder Pressure Sensor Any of the following is detected: When voltage at terminal +BS is 9.5 V or ...

Rear Door Courtesy Switch
Inspection INSPECTION PROCEDURE 1. INSPECT REAR DOOR COURTESY SWITCH (a) Check the resistance. (1) Measure the resistance using an ohmmeter, and check the results in accordance with the value( s) in the table below. Standard: Tester Connection Condition S ...

В© 2011-2023 Copyright www.ttguide.net