Toyota Tacoma (2015-2018) Service Manual: Vehicle Information Not Obtained (C1A02)

Toyota Tacoma (2015-2018) Service Manual / Pre-collision / Pre-collision System / Vehicle Information Not Obtained (C1A02)

DESCRIPTION

When a new millimeter wave radar sensor assembly is installed, it receives vehicle specification information from the main body ECU (multiplex network body ECU) and stores the information.

DTC C1A02 is stored when the millimeter wave radar sensor assembly receives the vehicle specification information from the main body ECU (multiplex network body ECU) but cannot store it.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1A02	Vehicle Information Not Obtained	When the vehicle is being driven at a speed of 50 km/h (32 mph) or more, the millimeter wave radar sensor assembly does not have stored vehicle information for 1 second or more.	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

PROCEDURE

1.	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.

Click here

Result	Proceed to
DTC C1A02 is not output	A
DTC C1A02 is output	B

USE SIMULATION METHOD TO CHECK

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Yaw Rate Sensor (C1A46)

DESCRIPTION If the millimeter wave radar sensor assembly receives a yaw rate sensor malfunction signal from the yaw rate sensor (airbag sensor assembly) or yaw rate sensor zero point malfunction ...

Front Radar Sensor (C1A10)

DESCRIPTION When an internal malfunction is detected in the millimeter wave radar sensor assembly, DTC C1A10 is stored. DTC No. Detection Item DTC Detection Condit ...

Other materials:

Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) (C1273,C1274,C1403,C1404)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1273 C1274 Stored only during test mode. Rear speed sensor RH/LH Rear speed sensor rotor RH/LH (rear ax ...

Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U0142)
DESCRIPTION These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor. HINT: If CAN communication system DTCs are stored, they may also be stored for other systems. DTC Code DTC Detection Condition ...

Radio Receiver
Components COMPONENTS ILLUSTRATION ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE INSTRUMENT CLUSTER CENTER FINISH PANEL SUB-ASSEMBLY (See page ) 2. REMOVE RADIO AND DISPLAY RECEIVER ASSEMBLY WITH BRACKET (a) Remove the 4 bolts. ...