Lexus NX: 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 wireless transmitter. Then, the main body ECU (multiplex network body ECU) activates the power window motor and sends the remote control signals to the sliding roof drive gear sub-assembly (sliding roof ECU) via LIN communication. The sliding roof drive gear sub-assembly (sliding roof ECU) 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 both functions are ON.
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If the sliding roof drive gear sub-assembly (sliding roof ECU) is replaced, the sliding roof drive gear sub-assembly (sliding roof ECU) 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 drive gear sub-assembly (sliding roof ECU) DTC is output, first perform troubleshooting for the sliding roof drive gear sub-assembly (sliding roof ECU) DTC.
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If the main body ECU (multiplex network body ECU) is replaced, refer to the Smart Access System with Push-button Start (for Entry Function).
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PROCEDURE
| 1. | CHECK REMOTE CONTROL FUNCTION |
(a) Check the key-linked and wireless transmitter-linked function.
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| Result | Proceed to |
|---|---|
| Both the power windows and sliding roof operate by the key-linked and wireless transmitter-linked function. | A |
| The sliding roof does not operate by the key-linked or wireless transmitter-linked function, but all the power windows operate. | B |
| Both the power windows and roof glass 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 DRIVE GEAR SUB-ASSEMBLY |
(a) Replace the sliding roof ECU (sliding roof drive gear sub-assembly).
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| 4. | INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY |
(a) Initialize the sliding roof drive gear sub-assembly.
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| 5. | CHECK REMOTE CONTROL FUNCTION |
(a) Check the key-linked and wireless transmitter-linked function.
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OK:
The key-linked and wireless transmitter-linked* function operates normally.
| OK | | END (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY WAS DEFECTIVE) |
| NG | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
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