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Terminals Of Ecu

  1. CHECK FRONT POWER SEAT SWITCH LH 
    Fig 1: Identifying Terminals Of ECU Connectors e45 And e46
    G05784793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the e45 and e46 switch connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      TERMINALS REFERENCE 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
    TERMINALS REFERENCE 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 Power seat operation 7 2 to 8 8 V
    e46-23 (SSRS) - e45-6 (GND) LG - W-B Slide direction position signal Slide operation 0 to 8 V
    e46-19 (SSFV) - e45-6 (GND) GR - W-B Front vertical direction position signal Front vertical operation 0 to 8 V
    e46-9 (SSRV) - e45-6 (GND) L - W-B Lifter position signal Lifter operation 0 to 8 V
    e46-22 (SSRR) - e45-6 (GND) GR - W-B Reclining position signal Reclining operation 0 to 8 V
    e46-21 (SSRH) - e45-6 (GND) O - W-B Headrest position signal Headrest operation 0 to 8 V
    e46-20 (SSRC) - e45-6 (GND) GR - W-B Seat cushion position signal 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 Connectors e18 And e20
    G05784794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the e18 and e20 switch connectors
    2. Measure the voltage and resistance according to the value(s) in the table below
      TERMINALS REFERENCE 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) - e45-6 (GND) B - W-B Battery (ECU power source) Always 11 to 14 V
      e20-4 (SYSB) - e45-6 (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
    TERMINALS REFERENCE 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
    e20-23 (SSRS) - e18-6 (GND) LG - W-B Slide direction position signal Slide operation 0 to 8 V
    e20-9 (SSRL) - e18-6 (GND) LG - W-B Lifter position signal Lifter operation 0 to 8 V
    e20-22 (SSRR) - e18-6 (GND) LG - W-B Reclining position signal Reclining operation 0 to 8 V
    e20-21 (SSRH) - e18-6 (GND) O - W-B Headrest position signal Headrest 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 Terminals Of Front Door ECU LH Connectors
G05784795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Disconnect the N10 ECU connector.
  2. Measure the voltage and resistance according to the value(s) in the table below.
    TERMINALS REFERENCE 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 Power switch OFF Below 1 V
    Power switch ON (IG) 11 to 14 V
    N10-6 (BDR) - N10-1 (GND) O - 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.
TERMINALS REFERENCE CHART

Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
P10-13 (M1) - P10-29 (MSWE) R - V Memory 1 switch signal Memory 1 switch OFF 11 to 14 V
Memory 1 switch ON Below 1 V
P10-14 (M2) - P10-29 (MSWE) B - V Memory 2 switch signal Memory 2 switch OFF 11 to 14 V
Memory 2 switch ON Below 1 V
P10-15 (M3) - P10-29 (MSWE) Y - V Memory 3 switch signal Memory 3 switch OFF 11 to 14 V
Memory 3 switch ON Below 1 V
P10-16 (MM) - P10-29 (MSWE) O - 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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