LS 400 V8-4.0L (1UZ-FE) (1990): Relays and Modules

Also for this vehicle: LS 430 V8-4.3L (3UZ-FE) (2002), LS 460 AWD V8-4.6L (1UR-FSE) (2009), LS 460 RWD V8-4.6L (1UR-FSE) (2010), LS 460 V8-4.6L (1UR-FSE) (2007), LS 600h V8-5.0L (2UR-FSE) Hybrid (2008).

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1. 01Relays and ModulesRelays and Modules: Sections
   • Relays and Modules - Accessories and Optional Equipment2 pages

     • Alarm Module, (Vehicle Antitheft) › Component Information › Locations
     • Antenna Relay › Component Information › Locations
   • Relays and Modules - Body and Frame10 pages

     • Power Door Lock Control Module › Component Information › Locations › Door Lock ECU2
     • Power Mirror Control Module › Component Information › Locations234
     • Power Seat Control Module › Component Information › Locations
     • Seat Heater Relay › Component Information › Locations › Passenger2
     • Sunroof / Moonroof Relay › Component Information › Locations
   • Relays and Modules - Brakes and Traction Control6 pages

     • Electronic Brake Control Module › Component Information › Locations23
     • Traction Control Relay › Component Information › Locations › Traction Brake Main Relay23
   • Relays and Modules - Cooling System › Radiator Cooling Fan Motor Relay › Component Information3 pages

     • Locations
     • Testing and Inspection › No. 1 & 2 Cooling Fan Relays2
   • Relays and Modules - Cruise Control › Cruise Control Module › Component Information › Locations
   • Relays and Modules - HVAC7 pages

     • Blower Motor Relay › Component Information › Locations › A/C Extra High Relay2
     • Compressor Clutch Relay › Component Information › Locations2
     • Condenser Fan Motor Relay, HVAC › Component Information › Locations › Cooling Fan Relay No. 22
     • Control Module HVAC › Component Information › Description and Operation
   • Relays and Modules - Lighting and Horns › Lamp Control Module › Component Information › Locations
   • Relays and Modules - Powertrain Management31 pages

     • Relays and Modules - Computers and Control Systems15 pages

       • Engine Control Module › Component Information13 pages

         • Technical Service Bulletins2 pages

           • All Technical Service Bulletins for Engine Control Module: › ENG004 › Feb › 91 › Engine Control Computer - Modification
           • Customer Interest for Engine Control Module: › ENG004 › Feb › 91 › Engine Control Computer - Modification
         • Testing and Inspection › Component Tests and General Diagnostics234567891011
       • Main Relay (Computer/Fuel System) › Component Information › Locations2
     • Relays and Modules - Fuel Delivery and Air Induction8 pages

       • Fuel Pump Relay › Component Information6 pages

         • Locations
         • Description and Operation › Fuel Pump Relay2
         • Testing and Inspection › Circuit Opening Relay23
       • Main Relay (Computer/Fuel System) › Component Information › Locations2
     • Relays and Modules - Ignition System8 pages

       • Ignition Control Module › Component Information › Locations234
       • Ignition Relay › Component Information › Locations234
   • Relays and Modules - Restraint Systems7 pages

     • Air Bag Control Module › Component Information › Locations234
     • Seat Belt Motor Relay › Component Information › Locations
     • Seat Occupant Classification Module - Air Bag › Component Information › Technical Service Bulletins › Restraints - OCS System Initialization
     • Seat Belt Warning Relay › Component Information › Locations
   • Relays and Modules - Starting and Charging › Starter Relay › Component Information3 pages

     • Locations
     • Testing and Inspection › Relay Continuity Test2
   • Relays and Modules - Steering and Suspension5 pages

     • Relays and Modules - Steering3 pages

       • Steering Column Control Module › Component Information › Locations
       • Steering Control Module › Component Information › Testing and Inspection2
     • Relays and Modules - Suspension2 pages

       • Compressor/Pump Relay, Suspension Control › Component Information › Locations
       • Suspension Control Module › Component Information › Locations
   • Relays and Modules - Transmission and Drivetrain › Relays and Modules - A/T › Shift Interlock Control Module › Component Information › Locations
   • Relays and Modules - Wiper and Washer Systems › Wiper Relay › Component Information › Locations23
2. 02Sensors and SwitchesSensors and Switches: Sections
3. 03MaintenanceMaintenance: Sections
4. 04Engine, Cooling and ExhaustEngine, Cooling and Exhaust: Sections
5. 05Powertrain ManagementPowertrain Management: Sections
6. 06Transmission and DrivetrainTransmission and Drivetrain: Sections
7. 07Brakes and Traction ControlBrakes and Traction Control: Sections
8. 08Starting and ChargingStarting and Charging: Sections
9. 09Power and Ground DistributionPower and Ground Distribution: Sections
10. 10Steering and SuspensionSteering and Suspension: Sections
11. 11Heating and Air ConditioningHeating and Air Conditioning: Sections
12. 12Restraint SystemsRestraint Systems: Sections
13. 13Accessories and Optional EquipmentAccessories and Optional Equipment: Sections
14. 14Body and FrameBody and Frame: Sections
15. 15Cruise ControlCruise Control: Sections
16. 16Instrument Panel, Gauges and Warning IndicatorsInstrument Panel, Gauges and Warning Indicators: Sections
17. 17Lighting and HornsLighting and Horns: Sections
18. 18Windows and GlassWindows and Glass: Sections
19. 19Wiper and Washer SystemsWiper and Washer Systems: Sections