LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> LS 460 AWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Seat >> Rear Power Seat Control System >> Data List/Active Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data List/Active Test

  1. READ DATA LIST 

    HINT:

    Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Body Electrical/(desired system)/Data List /
    7. According to the display on the Techstream, read the "Data List".

      Rear Left Seat 

      DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Memory No1 Seat position memorized with seat memory switch M/MEM or NOT MEM MEM: Memorized
      NOT MEM: Not memorized      		 -
      Door OP Link Return Set Door open linked return operation/Operate or Not Opr Operate: Rear door open
      Not Opr: Rear door closed      		 -
      RL-Door Courtesy Door courtesy switch signal/ON or OFF ON: Rear LH side door is open
      OFF: Rear LH side door is closed      		 -
      Ignition Switch Engine switch status/ON or OFF ON: Engine switch is on (IG)
      OFF: Engine switch is off      		 -
      SET Switch Seat memory set switch signal/ON or OFF ON: Memory set switch is ON
      OFF: Memory set switch is OFF      		 -
      M1 Switch Seat memory switch M signal/ON or OFF ON: Seat memory switch M is ON
      OFF: Seat memory switch M is OFF      		 -
      Cancel SW Seat memory can switch signal/ON or OFF ON: Memory can switch is ON
      OFF: Memory can switch is OFF      		 -
      Slide Position Seat sliding position/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Headrest Position Headrest position/MIN: 4096 MAX: 61440 Within range from 4096 to 61440 -
      Seat with Adjustable Position Upper lumbar position/MIN: 4096 MAX: 61440 Within range from 4096 to 61440 -
      Slide Pos Mem No1 Seat sliding position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Headrest Pos Mem No1 Headrest position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Seat with Adjustable Pos Mem1 Upper lumbar position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Rear Seat Back SW Rear seatback switch signal/ON or OFF ON: Rear seatback switch is ON
      OFF: Rear seatback switch is OFF      		 -
      Slide Front Sliding switch signal (Forward)/ON or OFF ON: Sliding switch (Forward) is ON
      OFF: Sliding switch (Forward) is OFF      		 -
      Slide Rear Sliding switch signal (Rearward)/ON or OFF ON: Sliding switch (Rearward) is ON
      OFF: Sliding switch (Rearward) is OFF      		 -
      Headrest UP Headrest switch signal (Upward)/ON or OFF ON: Headrest switch (Upward) is ON
      OFF: Headrest switch (Upward) is OFF      		 -
      Headrest Down Headrest switch signal (Downward)/ON or OFF ON: Headrest switch (Downward) is ON
      OFF: Headrest switch (Downward) is OFF      		 -
      Seat with Adjustable Front Upper lumbar switch signal (Forward)/ON or OFF ON: Upper lumbar switch (Forward) is ON
      OFF: Upper lumbar switch (Forward) is OFF      		 -
      Seat with Adjustable Rear Upper lumbar switch signal (Rearward)/ON or OFF ON: Upper lumbar switch (Rearward) is ON
      OFF: Upper lumbar switch (Rearward) is OFF      		 -

      Rear Right Seat 

      DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Memory No1 Seat position memorized with seat memory switch M/MEM or NOT MEM MEM: Memorized
      NOT MEM: Not memorized      		 -
      Door OP Link Return Set Door open linked return operation/Operate or Not Opr Operate: Rear door open
      Not Opr: Rear door closed      		 -
      RR-Door Courtesy Door courtesy switch signal/ON or OFF ON: Rear RH side door is open
      OFF: Rear RH side door is closed      		 -
      Ignition Switch Engine switch status/ON or OFF ON: Engine switch is ON
      OFF: Engine switch is OFF      		 -
      SET Switch Seat memory set switch signal/ON or OFF ON: Memory set switch is ON
      OFF: Memory set switch is OFF      		 -
      M1 Switch Seat memory switch M signal/ON or OFF ON: Seat memory switch M is ON
      OFF: Seat memory switch M is OFF      		 -
      Cancel SW Seat memory can switch signal/ON or OFF ON: Memory can switch is ON
      OFF: Memory can switch is OFF      		 -
      Slide Position Seat sliding position/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Headrest Position Headrest position/ MIN: 4096 MAX: 61440 Within range from 4096 to 61440 -
      Seat with Adjustable Position Upper lumbar position/MIN: 4096 MAX: 61440 Within range from 4096 to 61440 -
      Reclining Position* Seatback position/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      OTMAN Position* Ottoman position/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Slide Pos Mem No1 Seat sliding position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Headrest Pos Mem No1 Headrest position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Seat with Adjustable Pos Mem1 Upper lumbar position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Reclining Pos Mem No1* Seatback position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      OTMAN position Memory No1* Ottoman position memorized with seat memory switch M/MIN: 4096, MAX: 61440 Within range from 4096 to 61440 -
      Rear Seat Back SW Rear seat back switch signal/ON or OFF ON: Rear seat back switch is ON
      OFF: Rear seat back switch is OFF      		 -
      Slide Front Sliding switch signal (Forward)/ON or OFF ON: Sliding switch (Forward) is ON
      OFF: Sliding switch (Forward) is OFF      		 -
      Slide Rear Sliding switch signal (Rearward)/ON or OFF ON: Sliding switch (Rearward) is ON
      OFF: Sliding switch (Rearward) is OFF      		 -
      Headrest UP Headrest switch signal (Upward)/ ON or OFF ON: Headrest switch (Upward) is ON
      OFF: Headrest switch (Upward) is OFF      		 -
      Headrest Down Headrest switch signal (Downward)/ON or OFF ON: Headrest switch (Downward) is ON
      OFF: Headrest switch (Downward) is OFF      		 -
      Seat with Adjustable Front Upper lumbar switch signal (Forward)/ON or OFF ON: Upper lumbar switch (Forward) is ON
      OFF: Upper lumbar switch (Forward) is OFF      		 -
      Seat with Adjustable Rear Upper lumbar switch signal (Rearward)/ON or OFF ON: Upper lumbar switch (Rearward) is ON
      OFF: Upper lumbar switch (Rearward) is OFF      		 -
      Reclining Front* Reclining switch signal (Forward) /ON or OFF ON: Reclining switch (Forward) is ON
      OFF: Reclining switch (Forward) is OFF      		 -
      Reclining Rear* Reclining switch signal (Rearward)/ON or OFF ON: Reclining switch (Rearward) is ON
      OFF: Reclining switch (Rearward) is OFF      		 -
      Ottoman Up* Ottoman switch signal (Upward)/ON or OFF ON: Ottoman switch (Upward) is ON
      OFF: Ottoman switch (Upward) is OFF      		 -
      Ottoman Down* Ottoman switch signal (Downward)/ON or OFF ON: Ottoman switch (Downward) is ON
      OFF: Ottoman switch (Downward) is OFF      		 -

      Rear Console Switch 

      DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      R/L Selection SW Right SW Right/left selection switch signal (Right switch)/NOT SEL or R SEL NOT SEL: Selection switch (Right switch) is OFF
      R SEL: Selection switch (Right switch) is ON      		 -
      R/L Selection SW Left SW Right/left selection switch signal (Left switch)/NOT SEL or L SEL NOT SEL: Selection switch (Left switch) is OFF
      L SEL: Selection switch (Left switch) is ON      		 -
      Rear Seat Slide Front SW Sliding switch signal (Forward)/ON or OFF ON: Sliding switch (Forward) is ON
      OFF: Sliding switch (Forward) is OFF      		 -
      Rear Seat Slide Back SW Sliding switch signal (Rearward)/ON or OFF ON: Sliding switch (Rearward) is ON
      OFF: Sliding switch (Rearward) is OFF      		 -
      Rear Seat Headrest Up SW Headrest switch signal (Upward)/ON or OFF ON: Headrest switch (Upward) is ON
      OFF: Headrest switch (Upward) is OFF      		 -
      Rear Seat Headrest Down SW Headrest switch signal (Downward)/ON or OFF ON: Headrest switch (Downward) is ON
      OFF: Headrest switch (Downward) is OFF      		 -
      Rear Seat Hollow Front SW Upper lumbar switch signal (Forward)/ON or OFF ON: Upper lumbar switch (Forward) is ON
      OFF: Upper lumbar switch (Forward) is OFF      		 -
      Rear Seat Hollow Back SW Upper lumbar switch signal (Rearward)/ON or OFF ON: Upper lumbar switch (Rearward) is ON
      OFF: Upper lumbar switch (Rearward) is OFF      		 -
      Rear Seat Reclining Front SW* Reclining switch signal (Forward)/ON or OFF ON: Reclining switch (Forward) is ON
      OFF: Reclining switch (Forward) is OFF      		 -
      Rear Seat Reclining Back SW* Reclining switch signal (Rearward)/ON or OFF ON: Reclining switch (Rearward) is ON
      OFF: Reclining switch (Rearward) is OFF      		 -
      Rear Seat Ottoman Up SW* Ottoman switch signal (Upward)/ON or OFF ON: Ottoman switch (Upward) is ON
      OFF: Ottoman switch (Upward) is OFF      		 -
      Rear Seat Ottoman Down SW* Ottoman switch signal (Downward)/ON or OFF ON: Ottoman switch (Downward) is ON
      OFF: Ottoman switch (Downward) is OFF      		 -
      HINT:
      *: w/ Ottoman
  2. PERFORM ACTIVE TEST 

    HINT:

    Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Body Electrical/(desired system)/Active Test /
    7. According to the display on the Techstream, perform the "Active Test".

      Rear Left Seat 

      TESTER DISPLAY REFERENCE

      Tester Display Test Part Control Range
      Seat Slide Operation Seat sliding operation FRONT/REAR
      Headrest Operation Seat headrest operation UP/DOWN
      Rear Seat Lumbar Adjustment Seat lumbar operation FRONT/REAR

      Rear Right Seat 

      TESTER DISPLAY REFERENCE

      Tester Display Test Part Control Range
      Seat Slide Operation Seat sliding operation FRONT/REAR
      Headrest Operation Seat headrest operation UP/DOWN
      Rear Seat Lumbar Adjustment Seat lumbar operation FRONT/REAR
      Seat Reclining* Seat reclining operation FRONT/REAR
      Ottoman* Seat ottoman operation UP/DOWN
      HINT:
      *: w/ Ottoman
scientia non olet · About LEMON Manuals