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FRONT POWER SEAT CONTROL SYSTEM (for Driver Side) Power Seat Position is not Memorized

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DTC Code DTC Name
  Power Seat Position is not Memorized
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DESCRIPTION

When the SET switch and a seat memory switch (M1 switch, M2 switch or M3 switch) are pressed simultaneously, the outer mirror control ECU assembly commands the position control ECU and switch assembly through CAN communication to record each position value.

Tip:

The position control ECU and seat adjustment switches are built into an assembly that is referred to as the position control ECU and switch assembly.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

  • The seat position will not be recorded if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.

  • If a memorizing operation has failed, release all switches. The seat memory function does not operate unless the switches are released.

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PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Use the intelligent tester to check if the CAN communication system is functioning normally (Click here).

      OK
      CAN communication DTC is not output.

  2. Click here

    CHECK POWER SEAT CONTROL FUNCTION (USING POSITION CONTROL ECU AND SWITCH ASSEMBLY)


    1. Check that each function of the power seat operates normally by using the position control ECU and switch assembly.

      OK
      Each function of power seat operates normally by using position control ECU and switch assembly.

  3. Click here

    READ VALUE USING INTELLIGENT TESTER (SEAT MEMORY SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / D-Seat / Data List

    5. Read the Data List according to the display on the intelligent tester.

      Table 1. D-Seat
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      SET Switch SET switch signal / ON or OFF

      ON: SET switch on

      OFF: SET switch off

      		 -
      M1 Switch M1 switch signal / ON or OFF

      ON: M1 switch on

      OFF: M1 switch off

      		 -
      M2 Switch M2 switch signal / ON or OFF

      ON: M2 switch on

      OFF: M2 switch off

      		 -
      M3 Switch M3 switch signal / ON or OFF

      ON: M3 switch on

      OFF: M3 switch off

      		 -
      OK
      ON or OFF is displayed on the intelligent tester according to the table above.

  4. Click here

    READ VALUE USING INTELLIGENT TESTER (P SIGNAL)


    1. Read the Data List according to the display on the intelligent tester screen.

      Table 2. D-Seat
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Switch Shift lever position P signal / ON or OFF

      ON: Shift lever in P

      OFF: Shift lever not in P

      		 -
      OK
      ON or OFF appears on the screen.

  5. Click here

    READ VALUE USING INTELLIGENT TESTER (SEAT MEMORY SWITCH)


    1. Enter the following menus: Body / Mirror / Data List.

    2. Read the Data List according to the display on the intelligent tester.

      Table 3. Mirror
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Driver Side SET Mem SW SET switch / ON or OFF

      ON: SET switch on

      OFF: SET switch off

      		 -
      Driver Side Memory SW 1 M1 switch / ON or OFF

      ON: M1 switch on

      OFF: M1 switch off

      		 -
      Driver Side Memory SW 2 M2 switch / ON or OFF

      ON: M2 switch on

      OFF: M2 switch off

      		 -
      Driver Side Memory SW 3 M3 switch / ON or OFF

      ON: M3 switch on

      OFF: M3 switch off

      		 -
      OK
      ON or OFF is displayed on the intelligent tester according to the table above.

  6. Click here

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY


    1. Replace the outer mirror control ECU assembly (Click here).


  7. Click here

    CHECK SEAT MEMORY FUNCTION (SEAT POSITION MEMORY FUNCTION)


    1. Perform a memory operation properly. Check that the buzzer sounds to indicate the completion of the memory operation.

      Note:

      • The seat position will not be recorded if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.

      • If a memorizing operation has failed, release all switches. The seat memory function does not operate unless the switches are released.

      OK
      Seat memory switch function operates normally.

  8. Click here

    CHECK FOR DTC (P0705)


    1. Enter the following menus: Powertrain / Engine / DTC.

    2. Check if P0705 is output.

      Result
      Result Proceed to
      DTC P0705 is not output A
      DTC P0705 is output (for 2GR-FE) B
      DTC P0705 is output (for 2AZ-FE) C

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    CHECK COMBINATION METER FUNCTION


    1. Turn the engine switch on (IG).

    2. Move the shift lever to P.

    3. Check that the combination meter shows that the shift lever is in P.

      Result
      Result Proceed to
      Combination meter shows that the shift lever is in P A
      Combination meter does not show that the shift lever is in P (for 2GR-FE) B
      Combination meter does not show that the shift lever is in P (for 2AZ-FE) C

  10. Click here

    INSPECT SEAT MEMORY SWITCH


    1. A01CD2WE01

      Remove the seat memory switch (Click here).

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      e1-4 (M1) - e1-8 (E) M1 switch pressed Below 1 Ω
      e1-2 (M2) - e1-8 (E) M2 switch pressed Below 1 Ω
      e1-1 (M3) - e1-8 (E) M3 switch pressed Below 1 Ω
      e1-5 (MRY) - e1-8 (E) SET switch pressed Below 1 Ω

  11. Click here

    CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - SEAT MEMORY SWITCH)


    1. A01CCFCE03

      Disconnect the I9*1, J12*2 connector from the outer mirror control ECU assembly.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Table 4. for RHD
      Tester Connection Condition Specified Condition
      e1-1 (M3) - I9-6 (M3) Always Below 1 Ω
      e1-2 (M2) - I9-7 (M2) Always Below 1 Ω
      e1-4 (M1) - I9-8 (M1) Always Below 1 Ω
      e1-5 (MRY) - I9-9 (MM) Always Below 1 Ω
      e1-8 (E) - I9-10 (MSWE) Always Below 1 Ω
      e1-1 (M3) - Body ground Always 10 kΩ or higher
      e1-2 (M2) - Body ground Always 10 kΩ or higher
      e1-4 (M1) - Body ground Always 10 kΩ or higher
      e1-5 (MRY) - Body ground Always 10 kΩ or higher
      e1-8 (E) - Body ground Always 10 kΩ or higher
      Table 5. for LHD
      Tester Connection Condition Specified Condition
      e1-1 (M3) - J12-6 (M3) Always Below 1 Ω
      e1-2 (M2) - J12-7 (M2) Always Below 1 Ω
      e1-4 (M1) - J12-8 (M1) Always Below 1 Ω
      e1-5 (MRY) - J12-9 (MM) Always Below 1 Ω
      e1-8 (E) - J12-10 (MSWE) Always Below 1 Ω
      e1-1 (M3) - Body ground Always 10 kΩ or higher
      e1-2 (M2) - Body ground Always 10 kΩ or higher
      e1-4 (M1) - Body ground Always 10 kΩ or higher
      e1-5 (MRY) - Body ground Always 10 kΩ or higher
      e1-8 (E) - Body ground Always 10 kΩ or higher

  12. Click here

    GO TO CAN COMMUNICATION SYSTEMClick here

  13. Click here

    GO TO OTHER FLOW CHART (Power Seat does not Operate with Front Power Seat Switch)Click here

  14. Click here

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLYClick here

  15. Click here

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLYClick here

  16. Click here

    END (OUTER MIRROR CONTROL ECU ASSEMBLY IS DEFECTIVE)

  17. Click here

    GO TO SFI SYSTEM (P0705)Click here

  18. Click here

    REPLACE ECMClick here

  19. Click here

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLYClick here

  20. Click here

    REPLACE SEAT MEMORY SWITCHClick here

  21. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - SEAT MEMORY SWITCH)

  22. Click here

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLYClick here

  23. Click here

    GO TO CVT SYSTEM (P0705)Click here

  24. Click here

    REPLACE ECMClick here