Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Brake Control Signal Mismatch (C1A64)

DESCRIPTION

The skid control ECU (brake actuator assembly) sends signals to the driving support ECU assembly according to the brake control status. If the driving support ECU assembly receives an electronically controlled brake system malfunction signal from the skid control ECU (brake actuator assembly), it will store DTC C1A64.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A64

Brake Control Signal Mismatch

While the engine switch is on (IG), the driving support ECU assembly receives an electronically controlled brake system malfunction signal from the skid control ECU (brake actuator assembly) continuously for 0.5 seconds or more.

Electronically controlled brake system

CAUTION / NOTICE / HINT

NOTICE:

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.

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

HINT:

If DTC C1A64 is output by the pre-collision system, perform troubleshooting for the electronically controlled brake system.

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END

    Other System Malfunction (C1A63)

    Front Camera Module Circuit (C1AA0)

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