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


  1. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY


    1. for LHD

      A002AOON04

      1. Disconnect the e6 and e7 position control ECU and switch assembly connectors.

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

        Tech Tips

        Measure the values on the wire harness side with the connector disconnected.

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        e6-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        e6-7 (+B) - e6-2 (GND) W - W-B Battery power supply Always 11 to 14 V
        e7-12 (SYSB) - e6-2 (GND) G - W-B System power source Always 11 to 14 V
        e7-3 (IG) - e6-2 (GND) Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
        Engine switch off Below 1 V

      3. Reconnect the e6 and e7 position control ECU and switch assembly connectors.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        e6-6 (+B2) - e6-2 (GND) SB - W-B Lumbar support adjustment motor power source Always 11 to 14 V
        e6-1 (GND2) - Body ground W-B - Body ground Lumbar support adjustment motor ground Always Below 1 Ω
        e6-3 (SLD+) - e6-2 (GND) L - W-B Slide motor signal (forward) Slide switch off Below 1 V
        Slide switch on (Forward) 11 to 14 V
        e6-4 (SLD-) - e6-2 (GND) GR - W-B Slide motor signal (rearward) Slide switch off Below 1 V
        Slide switch on (Rearward) 11 to 14 V
        e6-5 (FRV-) - e6-2 (GND) R - W-B Front vertical motor signal (downward) Front vertical switch off Below 1 V
        Front vertical switch on (Downward) 11 to 14 V
        e6-8 (FRV+) - e6-2 (GND) B - W-B Front vertical motor signal (upward) Front vertical switch off Below 1 V
        Front vertical switch on (Upward) 11 to 14 V
        e6-9 (RCL+) - e6-2 (GND) P - W-B Reclining motor signal (forward) Reclining switch off Below 1 V
        Reclining switch on (Forward) 11 to 14 V
        e6-11 (RCL-) - e6-2 (GND) LG - W-B Reclining motor signal (rearward) Reclining switch off Below 1 V
        Reclining switch on (Rearward) 11 to 14 V
        e6-10 (LFT+) - e6-2 (GND) V - W-B Lifter motor signal (upward) Lifter switch off Below 1 V
        Lifter switch on (Upward) 11 to 14 V
        e6-12 (LFT-) - e6-2 (GND) G - W-B Lifter motor signal (downward) Lifter switch off Below 1 V
        Lifter switch on (Downward) 11 to 14 V

    2. for RHD

      A002CNZN05

      1. Disconnect the d6 and d7 position control ECU and switch assembly connectors.

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

        Tech Tips

        Measure the values on the wire harness side with the connector disconnected.

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        d6-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        d6-7 (+B) - d6-2 (GND) W - W-B Battery power supply Always 11 to 14 V
        d7-12 (SYSB) - d6-2 (GND) BE - W-B System power source Always 11 to 14 V
        d7-3 (IG) - d6-2 (GND) Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
        Engine switch off Below 1 V

      3. Reconnect the d6 and d7 position control ECU and switch assembly connectors.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        d6-6 (+B2) - d6-2 (GND) SB - W-B Lumbar support adjustment motor power source Always 11 to 14 V
        d6-1 (GND2) - Body ground W-B - Body ground Lumbar support adjustment motor ground Always Below 1 Ω
        d6-3 (SLD+) - d6-2 (GND) L - W-B Slide motor signal (forward) Slide switch off Below 1 V
        Slide switch on (Forward) 11 to 14 V
        d6-4 (SLD-) - d6-2 (GND) GR - W-B Slide motor signal (rearward) Slide switch off Below 1 V
        Slide switch on (Rearward) 11 to 14 V
        d6-5 (FRV-) - d6-2 (GND) R - W-B Front vertical motor signal (downward) Front vertical switch off Below 1 V
        Front vertical switch on (Downward) 11 to 14 V
        d6-8 (FRV+) - d6-2 (GND) B - W-B Front vertical motor signal (upward) Front vertical switch off Below 1 V
        Front vertical switch on (Upward) 11 to 14 V
        d6-9 (RCL+) - d6-2 (GND) P - W-B Reclining motor signal (forward) Reclining switch off Below 1 V
        Reclining switch on (Forward) 11 to 14 V
        d6-11 (RCL-) - d6-2 (GND) LG - W-B Reclining motor signal (rearward) Reclining switch off Below 1 V
        Reclining switch on (Rearward) 11 to 14 V
        d6-10 (LFT+) - d6-2 (GND) V - W-B Lifter motor signal (upward) Lifter switch off Below 1 V
        Lifter switch on (Upward) 11 to 14 V
        d6-12 (LFT-) - d6-2 (GND) G - W-B Lifter motor signal (downward) Lifter switch off Below 1 V
        Lifter switch on (Downward) 11 to 14 V

  2. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)

    A002C6KC09
    *A for LHD *B for RHD

    1. for LHD


      1. Disconnect the I2 outer mirror control ECU assembly (driver door) connector.

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

        Tech Tips

        Measure the values on the wire harness side with the connector disconnected.

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        I2-6 (CPUB) - I2-7 (GND) BE - BR Battery power supply Always 11 to 14 V
        I2-14 (BDR) - I2-7 (GND) L - BR Battery power supply Always 11 to 14 V
        I2-5 (SIG) - I2-7 (GND) R - BR Ignition power supply Engine switch on (IG) 11 to 14 V
        Engine switch off Below 1 V
        I2-7 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

      3. Reconnect the I2 outer mirror control ECU assembly (driver door) connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        I2-1 (MM) - I2-7 (GND) LG - BR SET switch signal for seat memory switch (driver door) SET switch on Below 1 V
        SET switch off 11 to 14 V
        I2-2 (M1) - I2-7 (GND) Y - BR M1 switch signal for seat memory switch (driver door) M1 switch on Below 1 V
        M1 switch off 11 to 14 V
        I2-3 (M2) - I2-7 (GND) G - BR M2 switch signal for seat memory switch (driver door) M2 switch on Below 1 V
        M2 switch off 11 to 14 V

    2. for RHD


      1. Disconnect the H2 outer mirror control ECU assembly (driver door) connector.

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

        Tech Tips

        Measure the values on the wire harness side with the connector disconnected.

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H2-6 (CPUB) - H2-7 (GND) BE - BR Battery power supply Always 11 to 14 V
        H2-14 (BDR) - H2-7 (GND) L - BR Battery power supply Always 11 to 14 V
        H2-5 (SIG) - H2-7 (GND) V - BR Ignition power supply Engine switch on (IG) 11 to 14 V
        Engine switch off Below 1 V
        H2-7 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

      3. Reconnect the H2 outer mirror control ECU assembly (driver door) connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H2-1 (MM) - H2-7 (GND) P - BR SET switch signal for seat memory switch (driver door) SET switch on Below 1 V
        SET switch off 11 to 14 V
        H2-2 (M1) - H2-7 (GND) B - BR M1 switch signal for seat memory switch (driver door) M1 switch on Below 1 V
        M1 switch off 11 to 14 V
        H2-3 (M2) - H2-7 (GND) G - BR M2 switch signal for seat memory switch (driver door) M2 switch on Below 1 V
        M2 switch off 11 to 14 V

  3. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    B00403HC01
    *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 2 Connectors - -
    A0028JSC01
    *A Main Body ECU (Multiplex Network Body ECU) with 3 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 3 Connectors - -

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Click here

    2. Reconnect the instrument panel junction block assembly connectors.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      MB-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-32 (IG) - Body ground - Ignition power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      MB-30 (ACC) - Body ground - Ignition power supply Engine switch on (ACC) 11 to 14 V
      Engine switch off Below 1 V
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      F19-6 (FLCY) - Body ground*1 GR - Body ground Front door courtesy light switch assembly (driver door) input Front door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      F19-27 (FRCY) - Body ground*2 L - Body ground Front door courtesy light switch assembly (driver door) input Front door RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω

      • *1: for LHD

      • *2: for RHD