DESCRIPTION When a new
millimeter wave radar sensor assembly is installed, it receives vehicle
specification information (destination, steering wheel position, 2WD or
4WD, etc.) from the main body ECU (multiplex network body ECU) and
stores the information. DTC C1A02 is stored when
the millimeter wave radar sensor assembly cannot store the vehicle
specification information from the main body ECU (multiplex network body
ECU). |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
C1A02 | Vehicle Information Not Obtained |
While
the ignition switch is ON and the dynamic radar cruise control system
is operating, the millimeter wave radar sensor assembly cannot store the
vehicle specification information for approximately 0.1 seconds 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.
- When the millimeter wave radar sensor assembly is replaced with a new
one, adjustment of the radar sensor beam axis must be performed.
Click here 
- 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.
Click here
PROCEDURE |
1. | CHECK FOR DTC (RADAR CRUISE 2) |
(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.
- Turn the ignition switch to ON.
- Turn the dynamic radar cruise control system on using the cruise control main switch (ON-OFF button).
- Wait for 2 seconds or more.
(c) Check for DTCs. Click here
|
Result | Proceed to | |
DTC C1A02 is not output |
A | | DTC C1A02 is output |
B |
| A |
 | USE SIMULATION METHOD TO CHECK |
| B |
| REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY | |
