Toyota Tacoma (2015-2018) Service Manual: Front Radar Sensor Region Code Mismatch (C1A0A)
DESCRIPTION
When the destination information in the millimeter wave radar sensor assembly and forward recognition camera do not match, DTC C1A0A is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|---|
|
C1A0A |
Front Radar Sensor Region Code Mismatch |
When the ignition switch is ON and the dynamic radar cruise control system is operating, the destination information in the forward recognition camera and millimeter wave radar sensor assembly do not match for approximately 1.3 seconds or more. |
|
Does not come on |
CAUTION / NOTICE / HINT
NOTICE:
- Check that the millimeter wave radar sensor assembly has not been replaced with one from another vehicle.
- When replacing the millimeter wave radar sensor assembly, make sure to replace it with a new one. If a device 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, and 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
.gif)
- 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 Learning.
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 |
(a) Clear the DTCs.
Click here
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON.
- Turn the dynamic radar cruise control system on using the cruise control main switch.
- Wait for 2 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1A0A is not output |
A |
|
DTC C1A0A is output |
B |
| A | .gif) |
USE SIMULATION METHOD TO CHECK |
|
.gif)
|
2. |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Replace the millimeter wave radar sensor assembly.
Click here
(b) Perform millimeter wave radar sensor assembly adjustment.
Click here
|
|
3. |
CHECK FOR DTC |
(a) Clear the DTCs.
Click here
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON.
- Turn the dynamic radar cruise control system on using the cruise control main switch.
- Wait for 2 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1A0A is not output |
A |
|
DTC C1A0A is output |
B |
| A | |
END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE) |
|
|
4. |
REPLACE FORWARD RECOGNITION CAMERA |
(a) Replace the forward recognition camera with a new one.
Click here
(b) Perform forward recognition camera adjustment.
Click here
| NEXT | |
END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
Communication Error from VSC to ECM (P1630)
DESCRIPTION
The skid control ECU (brake actuator assembly) sends signals such as cruise control
cancel signals and brake demand response signals to the ECM when the dynamic radar
cruise control s ...
Front Radar Sensor (C1A10)
DESCRIPTION
C1A10 is output when there is an internal malfunction in the millimeter wave
radar sensor assembly.
DTC No.
Detection Item
DTC Detection Condition
...
Other materials:
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH and LH sides.
The procedure described below is for the LH side.
PROCEDURE
1. REMOVE FRONT DOOR GLASS RUN
2. REMOVE FRONT DOOR GLASS OUTER WEATHERSTRIP ASSEMBLY
(See page
)
3. REMOVE NO. 1 BLAC ...
Fail-safe Chart
FAIL-SAFE CHART
If there is a problem with sensor signals or actuator systems, the skid
control ECU prohibits power supply to the brake actuator assembly and informs
the ECM of a VSC system malfunction.
The brake actuator assembly turns off the solenoids and the ECM stops
its ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. DTC CHECK / CLEAR (when Using Techstream)
(a) Check for DTCs.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Enter the following menus: Chassis / ABS/VSC/ TRAC / Trouble Codes.
(5) Read the DTCs by following the ...
