Contents Wiring diagrams Section: Restraints Control Systems All sections

Seat Belt: Other Lexus LS IV

Restraints Control Systems 40 illustrations ~2645 words

PRECAUTION

Note. When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.

System NameSee procedure
Navigation System (for DVD)INITIALIZATION
Advanced Parking Guidance System
Power Trunk Lid System
Rear Door Sunshade System

SYSTEM NAME CHART

Scheme 101

Scheme 101: PARTS LOCATION

Scheme 102

Scheme 102: SYSTEM DIAGRAM
SenderReceiverSignalLine
Front Door ECU LHRear Junction Block ECUShoulder belt anchorage switch signalCAN
Front Door ECU RHRear Junction Block ECUShoulder belt anchorage switch signalCAN
Front Door ECU LHPower Seat Switch LHSeat memory switch signalCAN
Front Door ECU RHPower Seat Switch RHSeat memory switch signalCAN
Power Seat Switch LHRear Junction Block ECUMemory signalCAN
Power Seat Switch RHRear Junction Block ECUMemory signalCAN
Rear Junction Block ECUPower Seat Switch LHShoulder belt sensor signalCAN
Rear Junction Block ECUPower Seat Switch RHShoulder belt sensor signalCAN
Front Door ECU RHRear Junction Block ECUShoulder belt anchorage switch signalCAN
Front Door ECU LHRear Junction Block ECUShoulder belt anchorage switch signalCAN

SIGNAL REFERENCE

  1. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. SYSTEM NAME CHART System Name See procedure Navigation System (for DVD) «INITIALIZATION»(ref-349706-S07943075812009120800000) Advanced Parking Guidance System Power Trunk Lid System Rear Door Sunshade System
  2. PRECAUTIONS WHEN USING TECHSTREAM When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

Scheme 103

Scheme 103: PARTS LOCATION

Scheme 104

Scheme 104: SYSTEM DIAGRAM

Communication table

SenderReceiverSignalLine
Center Airbag SensorNo. 1 meter ECUFront seat inner belt switch signal (for driver side) Front seat inner belt switch signal (for passenger side) Occupant detection signalCAN

SIGNAL REFERERNCE

CAUTIONReplace the faulty parts of the seat belt systems (outer belt, inner belt, bolts, nuts, adjustable shoulder anchor, tether anchor hardware and other related parts). When inspecting a vehicle that was in a collision, be sure to check all of the seat belt systems regardless of whether or not the system was activated in the collision. Replace any damaged or malfunctioning systems.

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Scheme 105
  1. RUNNING TEST (IN SAFE AREA) CAUTION: Conduct this test in a safe area. Fasten the front seat belt. Drive the vehicle at 16 km/h (10 mph) and firmly depress the brakes. Check that the belts lock and cannot be extended at this time. If a belt does not lock, replace the seat belt assembly (see «REMOVAL»(ref-349752-S27117964692009120800000) ). HINT: Inspect a seat belt assembly before installing it (see «INSPECTION»(ref-349752-S18742875692009120800000) ).

Scheme 106

Scheme 106: COMPONENTS

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Scheme 107

DISPOSAL

HINT

When scrapping vehicles equipped with a seat belt pretensioner or disposing of a front seat outer belt (with seat belt pretensioner), always first activate the seat belt pretensioner in accordance with the procedures described below. If any abnormality occurs during activation of the seat belt pretensioner, contact the SERVICE DEPARTMENT of TOYOTA MOTOR SALES, U.S.A., INC.

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Scheme 108: DISPOSAL

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Scheme 119
  1. DISPOSE OF FRONT SEAT OUTER BELT ASSEMBLY (WHEN INSTALLED IN VEHICLE) HINT: Prepare a battery to activate the seat belt pretensioner. Check if SST is functioning properly. SST 09082-00700 CAUTION: When activating the seat belt pretensioner, always use the specified SST. Connect SST's red clip to the battery's positive (+) terminal and the black clip to the battery's negative (-) terminal. HINT: Do not connect the yellow connector. The yellow connector is used to connect to the seat belt pretensioner. Press SST activation switch and check that the LED of SST activation switch illuminates. CAUTION: If the LED illuminates when the activation switch is not being pressed, SST may be malfunctioning. Replace SST with a new one. Disconnect SST from the battery. Disconnect the pretensioner connector. Disconnect the cable from the negative (-) battery terminal. Remove the front door scuff plate (see «REMOVAL»(ref-349734-S03706653952009120800000) ). for Standard body: Remove the rear door scuff plate (see «REMOVAL»(ref-349734-S03706653952009120800000) ). for Long Body: Remove the rear door scuff plate (see «REMOVAL»(ref-349734-S29426050782009120800000) ). Remove the center pillar garnish lower (see «REMOVAL»(ref-349734-S03706653952009120800000) ). Disconnect the pretensioner connector as shown in the illustration. Prepare SST for activation of the seat belt pretensioner. Install the floor anchor of the seat belt. Connect SST (A) to SST (B). Then connect SST (B)'s connector to the seat belt pretensioner. SST 09082-00700,09082-00770 NOTE: To avoid damaging SST connector and wire harness, do not lock the secondary lock of the twin lock. Move SST at least 10 m (33 ft.) away from the front of the vehicle. Close all the doors and windows of the vehicle. HINT: Leave a gap in one of the windows for inserting SST wire harness. NOTE: Take care not to damage SST wire harness. Connect SST's red clip to the battery's positive (+) terminal and the black clip to the negative (-) terminal. Activate the seat belt pretensioner. Confirm that no one is inside the vehicle or within 10 m (33 ft.) of the vehicle. Press SST activation switch to activate the seat belt pretensioner. HINT: The seat belt pretensioner operates at the same time SST activation switch's LED illuminates. Dispose of the front seat outer belt (with the seat belt pretensioner). CAUTION: Do not touch the front seat outer belt for at least 30 minutes after the seat belt pretensioner has been activated. It is very hot. Use gloves and safety glasses when handling a front seat outer belt whose pretensioner has been activated. Always wash your hands with water after completing the disposal. Do not apply water to a front seat outer belt that has an activated pretensioner. HINT: When scrapping a vehicle, activate the seat belt pretensioner, and then scrap the vehicle with the activated front seat outer belt installed.
  2. DISPOSE OF FRONT SEAT OUTER BELT ASSEMBLY (WHEN NOT INSTALLED IN VEHICLE) NOTE: Be sure to follow the procedures listed below when activating the seat belt pretensioner. Remove the front seat outer belt. Wind the seat belt with the retractor. When the seat belt is sufficiently wound, cut the seat belt approximately 100 mm (0.39 in.) from the retractor, as shown in the illustration. HINT: The seat belt is designed so that winding the seat belt before pretensioner activation will decrease the pulling power of the seat belt during pretensioner activation. Check if SST is functioning properly. SST 09082-00700,09082-00770 CAUTION: When activating a seat belt pretensioner, always use the specified SST. Prepare SST for activation of the seat belt pretensioner. Connect SST (A) to SST (B). Then connect SST (B)'s connector to the seat belt pretensioner. NOTE: To avoid damaging SST connector and wire harness, do not lock the secondary lock of the twin lock. Place the front seat outer belt on the ground and cover it with a tire (with wheel). NOTE: Set up the front seat outer belt as shown in the illustration. Move SST at least 10 m (33 ft.) away from the wheel. NOTE: Take care not to damage SST wire harness. Activate the seat belt pretensioner. Connect SST's red clip to the battery's positive (+) terminal and the black clip to the battery's negative (-) terminal. Check that no one is within 10 m (33 ft.) of the wheel. Press SST activation switch to activate the seat belt pretensioner. HINT: The seat belt pretensioner operates at the same time SST activation switch's LED illuminates. Dispose of the front seat outer belt (with the seat belt pretensioner). CAUTION: Do not touch the front seat outer belt for at least 30 minutes after the seat belt pretensioner has been activated. It is very hot. Use gloves and safety glasses when handling a front seat outer belt whose pretensioner has been activated. Always wash your hands with water after completing the disposal. Do not apply water to a front seat outer belt that has an activated pretensioner. Remove the tire (with wheel) and SST. Place the front seat outer belt in a plastic bag, tie the end tightly and dispose of it in the same way as other general parts.

Scheme 120

Scheme 120: COMPONENTS

Scheme 121

Scheme 121: REMOVAL
  1. REMOVE FRONT SEAT OUTER BELT ASSEMBLY Remove the front seat outer belt (see «REMOVAL»(ref-349752-S27117964692009120800000) ).
  2. REMOVE HEIGHT ADJUSTABLE ANCHOR MOTOR Remove the connector. Pull the motor downward to remove it from the adjuster as shown in the illustration.
  3. REMOVE FRONT SHOULDER BELT ANCHOR ADJUSTER ASSEMBLY Remove the 2 bolts and adjuster.

HINT

When scrapping vehicles equipped with a seat belt pretensioner or disposing of a seat outer belt (with seat belt pretensioner), always first activate the seat belt pretensioner in accordance with the procedures described below. If any abnormality occurs during activation of the seat belt pretensioner, contact the SERVICE DEPARTMENT of TOYOTA MOTOR SALES, U.S.A., INC.

CAUTIONNever dispose of a rear seat outer belt that has a non-activated pretensioner. The seat belt pretensioner produces a loud, exploding sound when it activates. Perform the operation where it will not be a nuisance to nearby people. When activating a rear seat outer belt (with seat belt pretensioner), stand at least 10 m (33 ft.) away from the rear seat outer belt. Use gloves and safety glasses when handling a rear seat outer belt with an activated pretensioner. Always wash your hands with water after completing the disposal. Do not apply water to a rear seat outer belt that has an activated pretensioner. Perform procedures in a place away from electrical interference. When activating the seat belt pretensioner, always use the specified SST (SRS airbag deployment tool).

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Scheme 130
  1. DISPOSE OF REAR SEAT OUTER BELT ASSEMBLY (WHEN INSTALLED IN VEHICLE) HINT: Prepare a battery to activate the seat belt pretensioner. Check if SST is functioning properly. SST 09082-00770,09082-00700 CAUTION: When activating the seat belt pretensioner, always use the specified SST. Connect SST red clip to the battery's positive (+) terminal and the black clip to the battery's negative (-) terminal. HINT: Do not connect the yellow connector. The yellow connector is used to connect to the seat belt pretensioner. Press SST activation switch and check that the LED of SST activation switch illuminates. CAUTION: If the LED illuminates when the activation switch is not being pressed, SST may be malfunctioning. Replace SST with a new one. Disconnect SST from the battery. Disconnect the pretensioner connector. Disconnect the cable from the negative (-) battery terminal. Remove the rear door scuff plate (see «REMOVAL»(ref-349752-S03119614232009120800000) ). Remove the rear seat side garnish (see «REMOVAL»(ref-349734-S03706653952009120800000) ). Remove the roof side garnish inner (see «REMOVAL»(ref-349734-S03706653952009120800000) ). w/ Rear Sunshade: Remove the package tray trim panel assembly (see «REMOVAL»(ref-349752-S03119614232009120800000) ). w/o Rear Sunshade: Remove the package tray trim panel assembly (see «REMOVAL»(ref-349752-S03119614232009120800000) ). Disconnect the pretensioner connector as shown in the illustration. Prepare SST for activation of the seat belt pretensioner. Install the floor anchor of the seat belt. Connect SST (A) to SST (B). Then connect SST (B)'s connector to the seat belt pretensioner. SST 09082-00770 SST 09082-00700 NOTE: To avoid damaging SST connector and wire harness, do not lock the secondary lock of the twin lock. Move SST at least 10 m (33 ft.) away from the rear of the vehicle. Close all the doors and windows of the vehicle. HINT: Leave a gap in one of the windows for inserting SST wire harness. NOTE: Take care not to damage SST wire harness. Connect SST's red clip to the battery's positive (+) terminal and the black clip to the negative (-) terminal. Activate the seat belt pretensioner. Confirm that no one is inside the vehicle or within 10 m (33 ft.) of the vehicle. Press SST activation switch to activate the seat belt pretensioner. HINT: The seat belt pretensioner operates at the same time SST activation switch's LED illuminates. Dispose of the rear seat outer belt (with the seat belt pretensioner). CAUTION: Do not touch the rear seat outer belt for at least 30 minutes after the seat belt pretensioner has been activated. It is very hot. Use gloves and safety glasses when handling a rear seat outer belt whose pretensioner has been activated. Always wash your hands with water after completing the disposal. Do not apply water to a rear seat outer belt that has an activated pretensioner. HINT: When scrapping a vehicle, activate the seat belt pretensioner, and then scrap the vehicle with the activated rear seat outer belt installed.
  2. DISPOSE OF REAR SEAT OUTER BELT ASSEMBLY (WHEN NOT INSTALLED IN VEHICLE) NOTE: Be sure to follow the procedures listed below when activating the seat belt pretensioner. Remove the rear seat outer belt (see «REMOVAL»(ref-349752-S03119614232009120800000) ). Wind the seat belt with the retractor. When the seat belt is sufficiently wound, cut the seat belt approximately 100 mm (0.39 in.) from the retractor, as shown in the illustration. HINT: The seat belt is designed so that winding the seat belt before pretensioner activation will decrease the pulling power of the seat belt during pretensioner activation. Check if SST is functioning properly. SST 09082-00770,09082-00700 CAUTION: When activating a seat belt pretensioner, always use the specified SST. Prepare SST for activation of the seat belt pretensioner. Connect SST (A) to SST (B). Then connect SST (B)'s connector to the seat belt pretensioner. NOTE: To avoid damaging SST connector and wire harness, do not lock the secondary lock of the twin lock. Place the rear seat outer belt on the ground and cover it with a tire (with wheel). Move SST at least 10 m (33 ft.) away from the wheel. NOTE: Take care not to damage SST wire harness. Activate the seat belt pretensioner. Connect SST red clip to the battery's positive (+) terminal and the black clip to the battery's negative (-) terminal. Check that no one is within 10 m (33 ft.) of the wheel. Press SST activation switch to activate the seat belt pretensioner. HINT: The seat belt pretensioner operates at the same time SST activation switch's LED illuminates. Dispose of the rear seat outer belt (with the seat belt pretensioner). CAUTION: Do not touch the rear seat outer belt for at least 30 minutes after the seat belt pretensioner has been activated. It is very hot. Use gloves and safety glasses when handling a rear seat outer belt whose pretensioner has been activated. Always wash your hands with water after completing the disposal. Do not apply water to a rear seat outer belt that has an activated pretensioner. Remove the tire (with wheel) and SST. Place the rear seat outer belt in a plastic bag, tie the end tightly and dispose of it in the same way as other general parts.

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Scheme 131: COMPONENTS

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Scheme 133

Scheme 133: REMOVAL

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Scheme 134
  1. REMOVE REAR SEAT ASSEMBLY for Power Seat: Remove the rear seat (see «REMOVAL»(ref-349741-S26853688812009120800000) ). for Ottoman: Remove the rear seat (see «REMOVAL»(ref-349741-S19112888892009120800000) ). for Fixed Seat Type: Remove the rear seat (see «REMOVAL»(ref-349741-S36365163922009120800000) ).
  2. REMOVE REAR DOOR SCUFF PLATE LH for Standard Body: Remove the rear door scuff plate (see «REMOVAL»(ref-349734-S03706653952009120800000) ). for Long Body: Remove the rear door scuff plate (see «REMOVAL»(ref-349734-S29426050782009120800000) ).
  3. REMOVE REAR DOOR SCUFF PLATE RH for Standard Body: Remove the rear door scuff plate (see «REMOVAL»(ref-349734-S03706653952009120800000) ). for Long Body: Remove the rear door scuff plate (see «REMOVAL»(ref-349734-S29426050782009120800000) ).
  4. REMOVE REAR SEAT SIDE GARNISH LH (See «REMOVAL»(ref-349734-S03706653952009120800000) )
  5. REMOVE REAR SEAT SIDE GARNISH RH (See «REMOVAL»(ref-349734-S03706653952009120800000) )
  6. REMOVE ROOF SIDE GARNISH INNER LH (See «REMOVAL»(ref-349734-S03706653952009120800000) )
  7. REMOVE ROOF SIDE GARNISH INNER RH (See «REMOVAL»(ref-349734-S03706653952009120800000) )
  8. REMOVE CHILD RESTRAINT SEAT TETHER ANCHOR COVER Detach the 2 clips and 2 claws, and remove the anchor cover.
  9. REMOVE PACKAGE TRAY TRIM PANEL ASSEMBLY (w/ Rear Sunshade) (See «REMOVAL»(ref-349734-S29129796022009120800000) )
  10. REMOVE PACKAGE TRAY TRIM PANEL ASSEMBLY (w/o Rear Sunshade) (See «REMOVAL»(ref-349752-S03119614232009120800000) )
  11. REMOVE CHILD RESTRAINT SEAT TETHER ANCHOR BRACKET Except Ottoman: Remove the 3 bolts and 3 child restraint seat tether anchor brackets. For Ottoman: Remove the 2 bolts and 2 child restraint seat tether anchor brackets.

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Scheme 135
  1. INSTALL CHILD RESTRAINT SEAT TETHER ANCHOR BRACKET for Ottoman: Install the 2 child restraint seat tether anchor brackets with the 2 bolts. Torque: 21 N*m (214 kgf*cm, 16 ft.*lbf) Except Ottoman: Install the 3 child restraint seat tether anchor brackets with the 3 bolts. Torque: 21 N*m (214 kgf*cm, 16 ft.*lbf)
  2. INSTALL PACKAGE TRAY TRIM PANEL ASSEMBLY (w/ Rear Sunshade) (See «INSTALLATION»(ref-349734-S21460801522009120800000) )
  3. INSTALL PACKAGE TRAY TRIM PANEL ASSEMBLY (w/o Rear Sunshade) (See «INSTALLATION»(ref-349752-S08859520182009120800000) )
  4. INSTALL CHILD RESTRAINT SEAT TETHER ANCHOR COVER Attach the 2 clips and 2 claws, and install the anchor cover.
  5. INSTALL ROOF SIDE GARNISH INNER LH (See «INSTALLATION»(ref-349734-S14494944522009120800000) )
  6. INSTALL ROOF SIDE GARNISH INNER RH (See «INSTALLATION»(ref-349734-S14494944522009120800000) )
  7. INSTALL REAR SEAT SIDE GARNISH LH (See «INSTALLATION»(ref-349734-S14494944522009120800000) )
  8. INSTALL REAR SEAT SIDE GARNISH RH (See «INSTALLATION»(ref-349734-S14494944522009120800000) )
  9. INSTALL REAR DOOR SCUFF PLATE LH for Standard Body: Install the rear door scuff plate (see «INSTALLATION»(ref-349734-S14494944522009120800000) ). for Long Body: Install the rear door scuff plate (see «INSTALLATION»(ref-349734-S24814211142009120800000) ).
  10. INSTALL REAR DOOR SCUFF PLATE RH for Standard Body: Install the rear door scuff plate (see «INSTALLATION»(ref-349734-S14494944522009120800000) ). for Long Body: Install the rear door scuff plate (see «INSTALLATION»(ref-349734-S24814211142009120800000) ).
  11. INSTALL REAR SEAT ASSEMBLY for Power Seat: Install the rear seat (see «INSTALLATION»(ref-349741-S24840229242009120800000) ). for Ottoman: Install the rear seat (see «INSTALLATION»(ref-349741-S09487469022009120800000) ). for Fixed Seat Type: Install the rear seat (see «INSTALLATION»(ref-349741-S36437420052009120800000) ).

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Scheme 136: COMPONENTS

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Scheme 138: REMOVAL

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  1. REMOVE REAR SEAT ASSEMBLY for Power Seat: Remove the rear seat (see «REMOVAL»(ref-349741-S26853688812009120800000) ). for Ottoman: Remove the rear seat (see «REMOVAL»(ref-349741-S19112888892009120800000) ). for Fixed Seat Type: Remove the rear seat (see «REMOVAL»(ref-349741-S36365163922009120800000) ).
  2. REMOVE CHILD RESTRAINT SEAT ANCHOR BRACKET SUB-ASSEMBLY INNER Except Ottoman: Remove the 2 bolts and 2 anchor brackets. for Ottoman: Remove the bolt and anchor bracket.
  3. REMOVE CHILD RESTRAINT SEAT ANCHOR BRACKET SUB-ASSEMBLY Except Ottoman: Remove the 2 bolts and 2 anchor brackets. for Ottoman: for Driver Side: Remove the bolt and anchor bracket. for Passenger Side: Remove the 2 bolts and anchor bracket.