Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Key-off Operation Function Operates even if Operating Conditions are not Satisfied

DESCRIPTION

The sliding roof ECU (sliding roof drive gear assembly) operates its built-in motor according to the sliding roof switch (roof console box sub-assembly) operation. Using the sliding roof switch (roof console box sub-assembly), if the sliding roof can be operated normally when 45 seconds or more have elapsed since the engine switch was turned off, the key-off operation function may be abnormal.

CAUTION / NOTICE / HINT

NOTICE:

• If the sliding roof ECU (sliding roof drive gear assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear assembly) must be initialized.

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• The sliding roof system uses the CAN and LIN communication systems. First, confirm that there are no malfunctions in the CAN and LIN communication systems. Refer to How to Proceed with Troubleshooting.

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• Before replacing the main body ECU (multiplex network body ECU) refer to Registration.

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PROCEDURE

(a) Check if the key-off operation function of the power window control system operates normally.

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OK:

The key-off operation function of the power window control system operates normally.

OK

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)