Contents Wiring diagrams Section: Sun Roof/t-Top/convertible Top All sections

Sliding Roof: Other Lexus LS IV

Sun Roof/t-Top/convertible Top 4 illustrations ~925 words

PRECAUTION

  1. NOTICE FOR DISCONNECTING CABLE FROM NEGATIVE (-) BATTERY TERMINAL NOTE: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
  2. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. SYSTEM REFERENCE System See procedure Navigation System (for DVD) «INITIALIZATION»(ref-349706-S07943075812009120800000) Advanced Parking Guidance System Rear Door Sunshade System Power Trunk Lid System

Scheme 32

Scheme 32: PARTS LOCATION

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Scheme 33

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Scheme 34

Scheme 35

Scheme 35: SYSTEM DIAGRAM

Communication table

SenderReceiverSignalLine
Main Body ECUSliding Roof ECUKey-off operation signal (Engine switch status) Key-off operation signal (Courtesy switch status)LIN
Certification ECUSliding Roof ECUTransmitter-linked open operation signal Entry lock switch-linked close operationCAN
Front Door ECU LHSliding Roof ECUKey-linked open/close operationCAN/LIN
Each Door ECUCertification ECUEntry lock switch signalCAN

COMMUNICATION REFERENCE

CUSTOMIZE PARAMETERS

  1. CUSTOMIZING FUNCTION WITH TECHSTREAM (REFERENCE) NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Customize Setting. Select the setting by referring to the table below. Slide Roof SLIDE ROOF SPECIFICATION Display (Item) Default Contents Setting Door Key Related Open ON Function to manually open sliding roof linked with power window if holding driver side door key for 3 seconds or more to unlock position when engine switch is off ON/OFF Door Key Related Close ON Function to manually close sliding roof linked with power window if holding driver side door key for 3 seconds or more to lock position when engine switch is off ON/OFF Wireless Key Related Open ON Function to manually open sliding roof linked with power window if pressing transmitter UNLOCK switch for 3 seconds or more when engine switch is off ON/OFF Door Handle Lock Button ON Function to manually close sliding roof linked with power window if pushing door lock switch for 3 seconds or more when engine switch is off and key is outside vehicle ON/OFF Door Key Related Operation Slide Function to select tilt up or slide open of manual sliding roof operation linked with power window activated by holding driver side door key for 3 seconds or more to unlock position when engine switch is off Tilt/Slide Wireless Key Related Operation Slide Function to select tilt up or slide open of manual sliding roof operation linked with power window activated by pressing on transmitter UNLOCK switch for 3 seconds or more when engine switch is off Tilt/Slide

INITIALIZATION

  1. INITIALIZE SLIDING ROOF DRIVE GEAR NOTE: When the sliding roof glass is replaced or removed and installed, or the drive gear assembly is replaced, the sliding roof drive gear requires initialization (pulse sensor initial position setting), as the glass position cannot be determined. If initialization is not performed, the AUTO slide open and close/tilt up and down function may not operate, or the sliding roof may move in reverse or become misaligned. During initialization, do not apply a physical shock, such as opening/closing a door or driving the vehicle at 5 km/h (3.10 mph) or more, to the vehicle and do not perform the following electrical operations: Cranking the engine Turning the engine switch from on (IG) to off Operating the power window switches Operating the window defogger switch Operating the blower switch Locking/Unlocking the door Operating the headlight dimmer switch HINT: When the cable is disconnected and reconnected to the negative (-) battery terminal or the drive gear connector is disconnected and reconnected, the sliding roof drive gear (pulse sensor initial position setting) initialization is not necessary. Perform initialization according to the table below. SLIDING ROOF REFERENCE Condition of Sliding Roof Proceed to AUTO slide open and close/tilt up and down function does not operate Procedure A Sliding roof moves in reverse direction during tilt down operation Procedure B Sliding roof moves in reverse direction during slide close operation Procedure C Procedure A Turn the engine switch on (IG). Close the sliding roof to the fully closed position. Press and hold the TILT UP switch to perform the following operations: tilt up --> approximately 1 second pause --> tilt down --> slide open --> slide close. NOTE: Make sure not to release the switch during the initialization. If the switch is released, perform the initialization again. The initialization is completed. Procedure B Turn the engine switch on (IG). Press the TILT UP switch until the sliding roof stops. HINT: If the glass becomes misaligned or does not fully tilt up, perform the following operations: Operate the SLIDE CLOSE switch until the sliding roof stops moving. Operate the TILT UP switch until the sliding roof stops moving, then proceed to the next step. Release the switch. Press the TILT UP switch for 10 seconds or more to perform the following operations: tilt up --> approximately 1 second pause --> tilt down --> slide open --> slide close. NOTE: Make sure not to release the switch during the initialization. If the switch is released, perform the initialization again. The initialization is completed. Procedure C Turn the engine switch on (IG). Press and hold the SLIDE CLOSE switch to perform the following operations: slide close --> move in reverse direction --> 10 second pause --> slide close. NOTE: Make sure not to release the switch during the initialization. If the switch is released, perform the initialization again. After the sliding roof stops in the fully closed position, release the switch. Perform procedure A.