Last Modified: 11-20-2023 |
6.11:8.1.0 |
Doc ID: RM1000000012W1W |
Model Year Start: 2018 |
Model: Camry |
Prod Date Range: [03/2017 - 06/2017] |
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: C1A69; Brake Control Signal Mismatch; 2018 MY Camry [03/2017 - 06/2017] |
DTC
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C1A69
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Brake Control Signal Mismatch
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DESCRIPTION
The skid control ECU (brake actuator assembly) sends signals to the millimeter wave radar sensor assembly according to the brake control status. If the millimeter wave radar sensor assembly receives a vehicle stability control system malfunction signal from the skid control ECU (brake actuator assembly), it will store DTC C1A64.
DTC No.
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Detection Item
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DTC Detection Condition
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Trouble Area
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C1A69
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Brake Control Signal Mismatch
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While the ignition switch is ON, the millimeter wave radar sensor assembly receives a vehicle stability control system malfunction signal from the skid control ECU (brake actuator assembly) for 1 second or more.
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Vehicle stability control system
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Millimeter wave radar sensor assembly
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CAUTION / NOTICE / HINT
NOTICE:
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When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly 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. As a result, a DTC may be stored.
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If the millimeter wave radar sensor assembly has been replaced, be sure to perform millimeter wave radar sensor assembly adjustment.
Click here
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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.
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CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM)
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HINT:
Pre-collision system DTC C1A69 may be stored due to a malfunction in the vehicle stability control system. Therefore, it is necessary to check for and troubleshoot vehicle stability control system DTCs first.
(a) Check for DTCs.
Chassis > ABS/VSC/TRAC > Trouble Codes
Result
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Proceed to
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Vehicle stability control system DTCs are not output
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A
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Vehicle stability control system DTCs are output
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B
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A
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2.
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CHECK FOR DTCs (PRE-COLLISION SYSTEM)
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(a) Clear the DTCs.
Body Electrical > Pre-Collision 2 > Clear DTCs
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
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Turn the ignition switch to ON and wait 1 second or more.
(c) Check for DTCs.
Body Electrical > Pre-Collision 2 > Trouble Codes
Result
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Proceed to
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DTC C1A69 is not output
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A
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DTC C1A69 is output
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B
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