Toyota Tacoma (2015-2018) Service Manual: Vehicle Speed Tolerance Malfunction (C1AA2)
DESCRIPTION
The forward recognition camera receives vehicle speed tolerance signals from the combination meter assembly. If the combination meter assembly detects a vehicle speed tolerance malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA2 is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1AA2 |
Vehicle Speed Tolerance Malfunction |
3 seconds after the ignition switch is turned to ON, a signal from the combination meter assembly indicating an abnormal vehicle speed tolerance is detected by the forward recognition camera for 50 seconds or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
- 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 Axis Adjustment.
Click here
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- The forward recognition camera system uses the CAN communication system.
First, confirm that there are no malfunctions in the CAN communication system.
Refer to How to Proceed with Troubleshooting.
Click here
PROCEDURE
|
1. |
CHECK FOR DTCs (METER / GAUGE SYSTEM) |
HINT:
Forward recognition camera system DTC C1AA2 may be stored due to a malfunction in the meter/gauge system. Therefore it is necessary to check for and troubleshoot meter/gauge system DTCs first.
(a) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
Meter/gauge system DTCs are not output |
A |
|
Meter/gauge system DTCs are output |
B |
| B | .gif) |
CHECK METER / GAUGE SYSTEM |
|
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|
2. |
CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Make sure that the DTC detection conditions are met.
HINT:
If the conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1AA2 is not output |
A |
|
DTC C1AA2 is output |
B |
| A | |
USE SIMULATION METHOD TO CHECK |
|
|
3. |
REPLACE FORWARD RECOGNITION CAMERA |
(a) Replace the forward recognition camera.
Click here
(b) Perform forward recognition camera axis adjustment.
Click here
|
|
4. |
CHECK DTC OUTPUT (FORWARD RECOGNITION CAMERA SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Make sure that the DTC detection conditions are met.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1AA2 is not output |
A |
|
DTC C1AA2 is output |
B |
| A | |
END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
| B | |
REPLACE COMBINATION METER ASSEMBLY |
FCM Destination Information Unmatched (C1AA1)
DESCRIPTION
When the forward recognition camera is replaced with a new one, the new forward
recognition camera attempts to store country specification information received
from the main body ECU ...
Front Radar Sensor Region Code Mismatch (C1A0A)
DESCRIPTION
The forward recognition camera receives necessary information from the millimeter
wave radar sensor assembly.
When the forward recognition camera judges that a millimeter wave radar se ...
Other materials:
Air Conditioning Amplifier Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Air Conditioning Amplifier Communication Stop Mode
Either condition is met:
Communication stop for "Air Conditioning Amplifier" is indicated
on the "Commun ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The ECM of this system is connected to the CAN communication system.
Therefore, before starting troubleshooting, make sure to check that there
is no trouble in the CAN and multiplex communication system.
*: Use the Techstream.
PROCEDURE
...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
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