Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Remote Control System does not Operate

DESCRIPTION

The main body ECU (multiplex network body ECU) receives remote control signals from the driver door key cylinder or electrical key transmitter sub-assembly. Then, the main body ECU (multiplex network body ECU) activates the power window motor and sends the remote control signals to the sliding roof ECU (sliding roof drive gear assembly) via LIN communication. The sliding roof ECU (sliding roof drive gear assembly) receives those signals and activates the sliding roof motor.

CAUTION / NOTICE / HINT

NOTICE:

• The sliding roof key-linked function and sliding roof wireless transmitter-linked function can be customized. Make sure that the customize settings of both functions are set to ON.

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• 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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• If a sliding roof ECU (sliding roof drive gear assembly) DTC is output, first perform troubleshooting for the sliding roof ECU (sliding roof drive gear assembly) DTC.

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

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PROCEDURE

(a) Check the key-linked and wireless transmitter-linked functions.

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A

USE SIMULATION METHOD TO CHECK

C

GO TO POWER WINDOW CONTROL SYSTEM

B

(a) Check the sliding roof operation.

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OK:

Sliding roof operates normally.

NG

GO TO OTHER PROBLEM (Sliding Roof does not Move by Operating Sliding Roof Control Switch)

OK

(a) Replace the sliding roof ECU (sliding roof drive gear assembly).

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NEXT

(a) Initialize the sliding roof ECU (sliding roof drive gear assembly).

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NEXT

(a) Check the key-linked and wireless transmitter-linked functions.

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OK:

The key-linked and wireless transmitter-linked functions operate normally.

OK

END (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) WAS DEFECTIVE)

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)