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Terminals Of Ecu

  1. CHECK FRONT POWER SEAT SWITCH LH 
    Fig 1: Identifying Front Power Seat Switch LH Connector Terminals
    G04952419Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the e45 and e46 switch connectors.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      e45-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      e45-7 (+B) - e45-6 (GND) B-R - W-B Battery (ECU power source) Always 11 to 14 V
      e46-4 (SYSB) - e45-6 (GND) B - W-B Battery (ECU power source) Always 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the e45 and e46 switch connectors.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      e46-12 (SLD+) - e45-6 (GND) B - W-B Sliding motor signal (forward) Seat moving forward using sliding switch 11 to 14 V
      Other Below 1 V
      e46-11 (SLD-) - e45-6 (GND) W - W-B Sliding motor signal (rearward) Seat moving rearward using sliding switch 11 to 14 V
      Other Below 1 V
      e46-10 (C+) - e45-6 (GND) W - W-B Seat cushion motor signal (forward) Seat cushion moving forward using cushion switch 11 to 14 V
      Other Below 1 V
      e45-4 (C-) - e45-6 (GND) R-B - W-B Seat cushion motor signal (rearward) Seat cushion moving rearward using cushion switch 11 to 14 V
      Other Below 1 V
      e46-1 (FRV+) - e45-6 (GND) R - W-B Front vertical motor signal (upward) Seat cushion front portion rising using front vertical switch 11 to 14 V
      Other Below 1 V
      e45-12 (FRV-) - e45-6 (GND) W - W-B Front vertical motor signal (downward) Seat cushion front portion lowering using front vertical switch 11 to 14 V
      Other Below 1 V
      e46-3 (RCL+) - e45-6 (GND) L - W-B Reclining motor signal (forward) Seatback moving forward using reclining switch 11 to 14 V
      Other Below 1 V
      e45-3 (RCL-) - e45-6 (GND) B-W - W-B Reclining motor signal (rearward) Seatback moving rearward using reclining switch 11 to 14 V
      Other Below 1 V
      e45-11 (H+) - e45-6 (GND) G-B - W-B Headrest motor signal (upward) Headrest moving upward using headrest switch 11 to 14 V
      Other Below 1 V
      e45-8 (H-) - e45-6 (GND) L - W-B Headrest motor signal (downward) Headrest moving downward using headrest switch 11 to 14 V
      Other Below 1 V
      e46-2 (RRV+) - e45-6 (GND) B-R - W-B Lifter motor signal (upward) Seat rising using lifter switch 11 to 14 V
      Other Below 1 V
      e45-5 (RRV-) - e45-6 (GND) Y - W-B Lifter motor signal (downward) Seat lowering using lifter switch 11 to 14 V
      Other Below 1 V
      e45-9 (LV+) - e45-6 (GND) R - W-B Lumbar motor signal (upward) Lumbar switch (upward) ON 11 to 14 V
      Other Below 1 V
      e45-2 (LV-) - e45-6 (GND) L-R - W-B Lumbar motor signal (downward) Lumbar switch (downward) ON 11 to 14 V
      Other Below 1 V
      e45-10 (L+) - e45-6 (GND) R-L - W-B Lumbar motor signal (forward) Lumbar switch (forward) ON 11 to 14 V
      Other Below 1 V
      e45-1 (L-) - e45-6 (GND) G-Y - W-B Lumbar motor signal (rearward) Lumbar switch (rearward) ON 11 to 14 V
      Other Below 1 V
      e46-8 (PVCC) - e45-6 (GND) V - W-B Position sensor power supply During power seat operation 7.2 to 8.8 V
      e46-23 (SSRS) - e45-6 (GND) LG - W-B Slide direction position signal During slide operation 0 to 8 V
      e46-19 (SSFV) - e45-6 (GND) GR - W-B Front vertical direction position signal During front vertical operation 0 to 8 V
      e46-9 (SSRV) - e45-6 (GND) L - W-B Lifter position signal During lifter operation 0 to 8 V
      e46-22 (SSRR) - e45-6 (GND) GR - W-B Reclining position signal During reclining operation 0 to 8 V
      e46-21 (SSRH) - e45-6 (GND) BE - W-B Headrest position signal During headrest operation 0 to 8 V
      e46-20 (SSRC) - e45-6 (GND) Y - W-B Seat cushion position signal During seat cushion operation 0 to 8 V

      If the result is not as specified, the ECU may have a malfunction.

  2. CHECK FRONT POWER SEAT SWITCH RH 
    Fig 2: Identifying Front Power Seat Switch RH Connector Terminals
    G04952420Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the e18 and e20 switch connectors.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      e18-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      e18-7 (+B) - e18-6 (GND) B - W-B Battery (ECU power source) Always 11 to 14 V
      e20-4 (SYSB) - e18-6 (GND) R - W-B Battery (ECU power source) Always 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the e18 and e20 switch connectors.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      e20-12 (SLD+) - e18-6 (GND) B - W-B Sliding motor signal (forward) Seat moving forward using sliding switch 11 to 14 V
      Other Below 1 V
      e20-11 (SLD-) - e18-6 (GND) R - W-B Sliding motor signal (rearward) Seat moving rearward using sliding switch 11 to 14 V
      Other Below 1 V
      e20-1 (FUP) - e18-6 (GND) R - W-B Front vertical motor signal (upward) Seat cushion front portion rising using front vertical switch 11 to 14 V
      Other Below 1 V
      e18-12 (FDWN) - e18-6 (GND) L - W-B Front vertical motor signal (downward) Seat cushion front portion lowering using front vertical switch 11 to 14 V
      Other Below 1 V
      e20-3 (RCL+) - e18-6 (GND) L - W-B Reclining motor signal (forward) Seatback moving forward using reclining switch 11 to 14 V
      Other Below 1 V
      e18-3 (RCL-) - e18-6 (GND) B-W - W-B Reclining motor signal (rearward) Seatback moving rearward using reclining switch 11 to 14 V
      Other Below 1 V
      e18-11 (H+) - e18-6 (GND) W - W-B Headrest motor signal (upward) Headrest moving upward using headrest switch 11 to 14 V
      Other Below 1 V
      e18-8 (H-) - e18-6 (GND) Y - W-B Headrest motor signal (downward) Headrest moving downward using headrest switch 11 to 14 V
      Other Below 1 V
      e20-2 (RUP) - e18-6 (GND) B - W-B Lifter motor signal (upward) Seat rising using lifter switch 11 to 14 V
      Other Below 1 V
      e18-5 (RDWN) - e18-6 (GND) G-B - W-B Lifter motor signal (downward) Seat lowering using lifter switch 11 to 14 V
      Other Below 1 V
      e18-10 (L+) - e18-6 (GND) R-L - W-B Lumbar motor signal (forward) Lumbar switch (Forward) ON 11 to 14 V
      Other Below 1 V
      e18-1 (L-) - e18-6 (GND) G-Y - W-B Lumbar motor signal (rearward) Lumbar switch (Rearward) ON 11 to 14 V
      Other Below 1 V
      e20-8 (PVCC) - e18-6 (GND) V - W-B Position sensor power supply Power seat operation 7.2 to 8.8 V
      e20-14 (HRRS) - e18-6 (GND) W - W-B Front power seat switch signal Full front switch (Rear) OFF 11 to 14 V
      Full front switch (Rear) ON Below 1 V
      e20-15 (HRFS) - e18-6 (GND) R - W-B Front power seat switch signal Full front switch (Front) OFF 11 to 14 V
      Full front switch (Front) ON Below 1 V
      e20-16 (SLDR) - e18-6 (GND) L - W-B Front power seat switch signal Slide switch (Rear) OFF 11 to 14 V
      Slide switch (Rear) ON Below 1 V
      e20-17 (SLDF) - e18-6 (GND) G - W-B Front power seat switch signal Slide switch (Front) OFF 11 to 14 V
      Slide switch (Front) ON Below 1 V
      e20-9 (SSRL) - e18-6 (GND) LG - W-B Lifter position signal During lifter operation 0 to 8 V
      e20-20 (SSFV) - e18-6 (GND) GR - W-B Front vertical direction position signal During front vertical operation 0 to 8 V
      e20-21 (SSRH) - e18-6 (GND) BE - W-B Headrest position signal During headrest operation 0 to 8 V
      e20-22 (SSRR) - e18-6 (GND) LG - W-B Reclining position signal During reclining operation 0 to 8 V
      e20-23 (SSRS) - e18-6 (GND) LG - W-B Slide direction position signal During slide operation 0 to 8 V

      If the result is not as specified, the ECU may have a malfunction.

  3. CHECK FRONT DOOR ECU LH 
    Fig 3: Identifying Front Door ECU Connector Terminal P10 And N10 (LH)
    G04944406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N10 ECU connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N10-11 (CPUB) - N10-1 (GND) B - W-B Battery (ECU power source) Always 11 to 14 V
      N10-3 (SIG) - N10-1 (GND) L - W-B Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      N10-6 (BDR) - N10-1 (GND) BE - W-B Battery (ECU power source) Always 11 to 14 V
      N10-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the N10 ECU connector.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      P10-13 (M1) - P10-29 (MSWE) R - V Memory switch M1 signal Memory switch M1 OFF 11 to 14 V
      Memory switch M1 ON Below 1 V
      P10-14 (M2) - P10-29 (MSWE) B - V Memory switch M2 signal Memory switch M2 OFF 11 to 14 V
      Memory switch M2 ON Below 1 V
      P10-15 (M3) - P10-29 (MSWE) Y - V Memory switch M3 signal Memory switch M3 OFF 11 to 14 V
      Memory switch M3 ON Below 1 V
      P10-16 (MM) - P10-29 (MSWE) BE - V Memory SET switch signal Memory SET switch OFF 11 to 14 V
      Memory SET switch ON Below 1 V

      If the result is not as specified, the ECU may have a malfunction.

  4. CHECK FRONT DOOR ECU RH 
    Fig 4: Identifying Front Door ECU RH Connector Terminals
    G06194121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N1 ECU connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N1-11 (CPUB) - NM (GND) R - W-B Battery (ECU power source) Always 11 to 14 V
      N1-3 (SIG) - N1-1 (GND) V - W-B Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      N1-6 (BDR) - N1-1 (GND) BE - W-B Battery (ECU power source) Always 11 to 14 V
      N1-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the N1 ECU connector.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      P4-13 (M1) - P4-29 (MSWE) R - V Memory switch M1 signal Memory switch M1 OFF 11 to 14 V
      Memory switch M1 ON Below 1 V
      P4-14 (M2) - P4-29 (MSWE) B - V Memory switch M2 signal Memory switch M2 OFF 11 to 14 V
      Memory switch M2 ON Below 1 V
      P4-15 (M3) - P4-29 (MSWE) Y - V Memory switch M3 signal Memory switch M3 OFF 11 to 14 V
      Memory switch M3 ON Below 1 V
      P4-16 (MM) - P4-29 (MSWE) BE - V Memory SET switch signal Memory SET switch OFF 11 to 14 V
      Memory SET switch ON Below 1 V

      If the result is not as specified, the ECU may have a malfunction.

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