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Home >> Lexus >> 2010 >> ES 350 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Front Power Seat Control (W/Seat Position Memory) (Diagnostics) >> FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System) >> Front Passenger Side Seat Memory Switch Circuit >> Procedure
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Front Passenger Side Seat Memory Switch Circuit: Procedure

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) 
    1. Check for DTCs in the CAN communication system. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .

      Result

      Result Proceed to
      DTC is not output A
      DTC is output B

    B → REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

    A: Go to next step 

  2. READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH RH) 
    1. Connect Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Read the DATA LIST.
      MIRROR:

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Set Memory Front passenger side SET memory switch / ON or OFF ON: Front passenger side SET memory switch is ON
      OFF: Front passenger side SET memory switch is OFF      		 -
      P Mem 1 SW Front passenger side memory switch 1 / ON or OFF ON: Front passenger side M1 memory switch is ON
      OFF: Front passenger side M1 memory switch is OFF      		 -
      P Mem 2 SW Front passenger side memory switch 2 / ON or OFF ON: Front passenger side M2 memory switch is ON
      OFF: Front passenger side M2 memory switch is OFF      		 -

      OK

      On the tester screen, each item changes between ON and OFF according to the above chart.

    OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 

    NG: Go to next step 

  3. INSPECT SEAT MEMORY SWITCH RH 
    1. Remove the seat memory switch RH. Refer to INSPECTION - Step 2 .
    2. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Seat Memory Switch RH & Connector Terminals
      GTY126878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Switch Position Specified Condition
      H7-1 (E) - H7-2 (MRY) SET switch is pressed Below 1 Ω
      SET switch is not pressed 10 kΩ or higher
      H7-1 (E) - H7-3 (M2) M2 switch is pressed Below 1 Ω
      M2 switch is not pressed 10 kΩ or higher
      H7-1 (E) - H7-4 (M1) M1 switch is pressed Below 1 Ω
      M1 switch is not pressed 10 kΩ or higher

    NG → REPLACE SEAT MEMORY SWITCH RH 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH RH CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 2: Identifying Connector Terminals Of Seat Memory Switch RH Circuit
      GTY119643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Condition Specified Condition
      H7-1 (E) - Body ground Always Below 1 Ω
      H7-1 (E) - H7-2 (MRY) Always 10 kΩ or higher
      H7-1 (E) - H7-3 (M2) Always 10 kΩ or higher
      H7-1 (E) - H7-4 (M1) Always 10 kΩ or higher

    OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 

    NG: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU - SEAT MEMORY SWITCH, BODY GROUND) 
    1. Disconnect the outer mirror control ECU RH connector.
      Fig 3: Identifying Outer Mirror Control ECU & Seat Memory Switch RH Connector Terminals
      GTY118825Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      E65-27 (M2) - H7-3 (M2) Always Below 1 Ω
      E65-28 (M1) - H7-4 (M1) Always Below 1 Ω
      E65-29 (MM) - H7-2 (MRY) Always Below 1 Ω
      E65-30 (MSWE) - H7-1 (E) Always Below 1 Ω
      E65-30 (MSWE) - Body ground Always Below 1 Ω
      H7-1 (E) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → REPLACE OUTER MIRROR CONTROL ECU 

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