Toyota CH-R Service Manual: Front Camera Module Circuit (C1AA0)

Toyota CH-R Service Manual / Pre-collision / Pre-collision System / Front Camera Module Circuit (C1AA0)

DESCRIPTION

The millimeter wave radar sensor assembly receives information about the area in front of the vehicle from the forward recognition camera.

If the millimeter wave radar sensor assembly detects a malfunction in the forward recognition camera, it stores DTC C1AA0.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1AA0	Front Camera Module Circuit	While the ignition switch to ON, the forward recognition camera detects an internal malfunction for approximately 0.3 seconds or more.	Forward recognition camera system Forward recognition camera Millimeter wave radar sensor assembly

CAUTION / NOTICE / HINT

NOTICE:

When replacing the millimeter wave radar sensor assembly, always replace it with a new one.
When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
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If the forward recognition camera has been replaced with a new one, be sure to perform forward recognition axis adjustment.
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The pre-collision 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.
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PROCEDURE

1.	CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)

HINT:

Pre-collision system DTC C1AA0 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.

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Chassis > Front Recognition Camera > Trouble Codes

Result	Proceed to
Forward recognition camera system DTCs are not output	A
Forward recognition camera system DTCs are output	B

GO TO FORWARD RECOGNITION CAMERA SYSTEM

2.	CHECK FOR DTCs (PRE-COLLISION SYSTEM)

(a) Clear the DTCs.

Click here

Body Electrical > Pre-Collision 2 > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

Click here

Body Electrical > Pre-Collision 2 > Trouble Codes

Result	Proceed to
DTC C1AA0 is not output	A
DTC C1AA0 is output	B

USE SIMULATION METHOD TO CHECK

3.	REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

(a) Replace the millimeter wave radar sensor assembly.

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(b) Adjust the millimeter wave radar sensor assembly.

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4.	CHECK FOR DTCs (PRE-COLLISION SYSTEM)

(a) Clear the DTCs.

Click here

Body Electrical > Pre-Collision 2 > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

Click here

Body Electrical > Pre-Collision 2 > Trouble Codes

Result	Proceed to
DTC C1AA0 is not output	A
DTC C1AA0 is output	B

END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)

REPLACE FORWARD RECOGNITION CAMERA

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