FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) > TERMINALS OF ECU

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CHECK FRONT POWER SEAT SWITCH LH

B167238E01

  1. Disconnect the Z9 and Z10 switch connectors.

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

    Terminal No. (Symbols)
    Wiring Color
    Terminal Description
    Condition
    Specified Condition
    Z9-1 (GND) - Body ground
    W-B - Body ground
    Ground
    Always
    Below 1 Ω
    Z9-5 (+B) - Z9-1 (GND)
    L - W-B
    Battery (ECU power source)
    Always
    11 to 14 V
    Z10-8 (SYSB) - Z9-1 (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 Z9 and Z10 switch connectors.

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbols)
    Wiring Color
    Terminal Description
    Condition
    Specified Condition
    Z9-2 (SLD+) - Z9-1 (GND)
    P - W-B
    Sliding motor signal (forward)
    Seat moving forward using sliding switch
    11 to 14 V
    Other
    Below 1 V
    Z9-3 (SLD-) - Z9-1 (GND)
    R - W-B
    Sliding motor signal (rearward)
    Seat moving rearward using sliding switch
    11 to 14 V
    Other
    Below 1 V
    Z9-6 (FRV+) - Z9-1 (GND)
    LG - W-B
    Front vertical motor signal (upward)
    Seat cushion front portion rising using front vertical switch
    11 to 14 V
    Other
    Below 1 V
    Z9-4 (FRV-) - Z9-1 (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
    Z9-8 (RCL+) - Z9-1 (GND)
    BE - W-B
    Reclining motor signal (forward)
    Seatback moving forward using reclining switch
    11 to 14 V
    Other
    Below 1 V
    Z9-10 (RCL-) - Z9-1 (GND)
    B - W-B
    Reclining motor signal (rearward)
    Seatback moving rearward using reclining switch
    11 to 14 V
    Other
    Below 1 V
    Z9-7 (LFT+) - Z9-1 (GND)
    G - W-B
    Lifter motor signal (upward)
    Seat cushion rising using lifter switch
    11 to 14 V
    Other
    Below 1 V
    Z9-9 (LFT-) - Z9-1 (GND)
    Y - W-B
    Lifter motor signal (downward)
    Seat cushion lowering using lifter switch
    11 to 14 V
    Other
    Below 1 V
    If the result is not as specified, the ECU may have a malfunction.

CHECK OUTER MIRROR CONTROL ECU

B166573E01

  1. Disconnect the N7 ECU connector.

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

    Terminal No. (Symbols)
    Wiring Color
    Terminal Description
    Condition
    Specified Condition
    N7-9 (GND) - Body ground
    W-B - Body ground
    Ground
    Always
    Below 1 Ω
    N7-3 (B) - N7-9 (GND)
    R - W-B
    Battery (ECU power source)
    Always
    11 to 14 V
    N7-4 (ACC) - N7-9 (GND)
    Y - W-B
    Ignition power supply
    Ignition switch OFF
    Below 1 V
    Ignition switch ON
    11 to 14 V
    If the result is not as specified, there may be a malfunction on the wire harness side.
  3. Reconnect the N7 ECU connector.

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbols)
    Wiring Color
    Terminal Description
    Condition
    Specified Condition
    N8-8 (M1) - N8-10 (MSWE)
    P - V
    Memory 1 switch signal
    Memory 1 switch OFF
    11 to 14 V
    Memory 1 switch ON
    Below 1 V
    N8-7 (M2) - N8-10 (MSWE)
    BE - V
    Memory 2 switch signal
    Memory 2 switch OFF
    11 to 14 V
    Memory 2 switch ON
    Below 1 V
    N8-9 (MM) - N8-10 (MSWE)
    L - 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.