Toyota Tundra Service Manual: Vehicle Information Not Obtained (C1A02)

Toyota Tundra Service Manual / Vehicle Interior / 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.

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

Pre-collision System

Skid Control Buzzer Circuit (C1A4A)

See More:

Toyota Tundra Owners Manual > For safe use: Child restraint systems
A child restraint system for a small child or baby must itself be properly restrained on the seat with the lap portion of the lap/ shoulder belt. The laws of all 50 states of the U.S.A. and Canada now require the use of child restraint systems. Points to remember Studies have shown that installing ...