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

DESCRIPTION

The skid control ECU (brake booster with master cylinder 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 booster with master cylinder assembly), it will store DTC C1A64.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A64

Brake Control Signal Mismatch

While the power switch is on (IG), the driving support ECU assembly receives an electronically controlled brake system malfunction signal from the skid control ECU (brake booster with master cylinder 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.

Click here

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.

Click here

NEXT

END

    Other System Malfunction (C1A63)

    Front Camera Module Circuit (C1AA0)

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    DESCRIPTION When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store the vehicle information received from the ECM. If the forward recognition camera cannot store the vehicle information, DTC C1AAD is stored. DTC No. Detection Item DTC Dete ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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