Lexus NX: All Power Windows do not Operate with Driver Side Door Key Cylinder or Wireless Transmitter
DESCRIPTION
- When a key switch is pushed: 1) the electrical key and TMPS receiver assembly receives the wireless door lock signal; 2) the door control receiver sends a signal to the main body ECU (multiplex network body ECU) through the certification ECU (smart key ECU assembly); 3) the main body ECU (multiplex network body ECU) sends the operation permission signal to the power window regulator motor assemblies; and 4) the power window regulator motor assemblies are activated.
- When the driver door key cylinder (key linked switch) is turned: 1) the front door lock assembly RH receives the signal; 2) the main body ECU (multiplex network body ECU) sends the signal to the power window regulator motor assemblies; and 3) the power window regulator motor assemblies are activated.
CAUTION / NOTICE / HINT
NOTICE:
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These functions are set through the customize function, as they are off by default.
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The power window control system uses the LIN communication system and CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the power window control system after confirming that the communication systems are functioning properly.
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- Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).
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If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
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PROCEDURE
| 1. | CHECK BASIC FUNCTION (WIRELESS AND POWER DOOR LOCK CONTROL SYSTEM) |
(a) Check that the wireless door lock/unlock function operates normally.
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(b) Check that the key-linked lock/unlock function operates normally.
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| Result | Proceed to |
|---|---|
| Wireless door lock/unlock function and key-linked lock/unlock function operate normally | A |
| Wireless door lock/unlock function does not operate normally | B |
| Key-linked lock/unlock function does not operate normally | C |
| B | .gif) | GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
| C | | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
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| 2. | CHECK MANUAL UP / DOWN FUNCTION |
(a) Check that the manual up and down functions using the multiplex network master switch assembly and power window regulator switch assembly can operate all the power windows.
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OK:
Manual up and down functions are normal.
| NG | | GO TO OTHER PROBLEM |
|
| 3. | CHECK REMOTE UP / DOWN FUNCTION |
(a) Check that the remote up and down functions using the multiplex network master switch assembly can operate all the power windows.
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OK:
Remote up and down functions are normal.
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG | | GO TO OTHER PROBLEM |
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DESCRIPTION
When the front doors are closed, each power window regulator motor assembly can control its power window operation for approximately 43 seconds after the power switch is turned from on
Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)
DESCRIPTION If a door glass or a power window regulator motor assembly does not operate smoothly, the jam protection function may be triggered automatically, resulting in the auto up operation being u
Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)
DESCRIPTION If a door glass or a power window regulator motor assembly does not operate smoothly, the catch protection function may be triggered automatically, resulting in the auto down operation bei
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Stereo Component Amplifier Malfunction (B15A3)
DESCRIPTION These DTCs are stored when a malfunction occurs in the stereo component amplifier assembly. DTC No. Detection Item DTC Detection Condition Trouble Area B15A3 Stereo Component Amplifier Malfunction When one of the conditions below is met:
Internal power supply malfunct
Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. REMOVE REAR SEAT ASSEMBLY Click here 2. REMOVE REAR SEATBACK COVER Click here 3. REMOVE REAR SEAT INNER WITH CENTER BELT ASSY RH (for RH Side) Click here 4. REMOVE REAR
