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
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- 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:
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
NOTICE:
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
HINT:
Using the Techstream to read the Data List allows t ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK FUEL PUMP ASSEMBLY OPERATION
(a) Check fuel pressure.
(1) Connect the Techstream to the DLC3.
(2) Start the engine.
(3) Turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine / Active Test / Control the
Target Fuel Pressure.
(5) ...
ECM Communication Circuit Malfunction (C1203)
DESCRIPTION
The circuit sends TRAC, A-TRAC and VSC control information from the skid control
ECU (master cylinder solenoid) to the ECM, and engine control information from the
ECM to the skid control ECU (master cylinder solenoid) via the CAN communication
system.
DTC Code
...
