Lexus ES: 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 sub-assembly) via LIN communication. The sliding roof ECU (sliding roof drive gear sub-assembly) receives those signals and activates the sliding roof motor.
CAUTION / NOTICE / HINT
NOTICE:
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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 sub-assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear sub-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 sub-assembly) DTC is output, first perform troubleshooting for the sliding roof ECU (sliding roof drive gear sub-assembly) DTC.
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Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
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PROCEDURE
| 1. | CHECK REMOTE CONTROL FUNCTION |
(a) Check the key-linked and wireless transmitter-linked functions.
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| Result | Proceed to |
|---|---|
| Both the power windows and sliding roof operate by the key-linked and wireless transmitter-linked functions. | A |
| The sliding roof does not operate by the key-linked or wireless transmitter-linked function, but all of the power windows operate. | B |
| Both the power windows and sliding roof do not operate by the key-linked or wireless transmitter-linked function. | C |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| C | | GO TO POWER WINDOW CONTROL SYSTEM |
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| 2. | CHECK SLIDING ROOF OPERATION |
(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) |
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| 3. | REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) |
(a) Replace the sliding roof ECU (sliding roof drive gear sub-assembly).
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| 4. | INITIALIZE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) |
(a) Initialize the sliding roof ECU (sliding roof drive gear sub-assembly).
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| 5. | CHECK REMOTE CONTROL FUNCTION |
(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 SUB-ASSEMBLY) WAS DEFECTIVE) |
| NG | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
READ NEXT:
Key-off Operation Function Operates even if Operating Conditions are not Satisfied
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Sliding Roof does not Move by Operating Sliding Roof Control Switch
DESCRIPTION The sliding roof ECU (sliding roof drive gear sub-assembly) receives slide and tilt signals and operates its built-in motor when the sliding roof switch (map light sub-assembly) is operate
SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
Utility
UTILITY HINT:
With "All Readiness", you can check whether or not the DTC judgment has been completed by using the Techstream.
You should check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.
ALL READINESS (a) Connect the Techstream to the DLC3
