DESCRIPTION
If the millimeter wave radar sensor assembly detects that the forward recognition camera beam has an axis misalignment, DTC C1AA8 is output.
Also if forward recognition axis adjustment has not been performed or did not complete normally after the forward recognition camera was replaced with a new one, DTC C1AA9 is stored.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1AA8 |
Front Camera Module Incorrect Axial Gap |
When the pre-collision system is operating, the millimeter wave radar sensor assembly continuously receives a signal indicating that the beam axis of the forward recognition camera is misaligned for 0.3 seconds or more. |
|
C1AA9 |
Front Camera Module Beam Axis Not Adjusted |
When the pre-collision system is operating, the millimeter wave radar sensor assembly detects that forward recognition axis adjustment has not been completed for 0.3 seconds or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
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Click here
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PROCEDURE
1. |
CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM) |
HINT:
Pre-collision system DTC C1AA8 and/or C1AA9 may be stored due to a malfunction in the forward recognition camera system. Therefore, it is necessary to check for and troubleshoot forward recognition camera system DTCs first.
(a) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
Forward recognition camera system DTCs are not output |
A |
Forward recognition camera system DTCs are output |
B |
B | ![]() |
GO TO FORWARD RECOGNITION CAMERA SYSTEM |
|
2. |
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.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1AA8 and/or C1AA9 is not output |
A |
DTC C1AA8 and/or C1AA9 is output |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
|
3. |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Replace the millimeter wave radar sensor assembly.
Click here
(b) Adjust the millimeter wave radar sensor assembly.
Click here
|
4. |
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.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1AA8 and/or C1AA9 is not output |
A |
DTC C1AA8 and/or C1AA9 is output |
B |
A | ![]() |
END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE) |
B | ![]() |
REPLACE FORWARD RECOGNITION CAMERA |
Toyota CH-R Service Manual > Immobiliser System(w/ Smart Key System): Antenna Coil Open / Short (B2784)
DESCRIPTION
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DTC No.
Detection Item
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DESCRIPTION
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