Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Error in Matching of ECUs (C1288)

DESCRIPTION

The skid control ECU (brake actuator assembly) stores this DTC when the previously learned values in the VSC system and engine information sent from the ECM are inconsistent, or when the learning has not completed after the skid control ECU (brake actuator assembly) is replaced with a new one.

PROCEDURE

(a) Check if CAN communication system DTCs are output.

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B

INSPECT CAN COMMUNICATION SYSTEM

A

(a) Perform system variant learning.

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HINT:

• System variant learning is automatically performed immediately after Test Mode is entered.
• If learning has not yet been performed, the slip indicator light will remain on and DTC C1288 will be stored.
• If system variant learning is not successful, the warning lights will not blink in the Test Mode pattern and DTC C1288 will not be cleared.

NEXT

(a) Clear the DTCs.

(b) Turn the engine switch off.

(c) Start the engine.

(d) Check if the same DTC is output.

A

END

B

REPLACE ECM