FRONT POWER SEAT CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT)


    1. for LHD:

      B000PPAN03

      1. Disconnect the w10 and w12 position control ECU assembly LH connectors.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        w10-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        w10-3 (+B) - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        w12-1 (IG) - Body ground P - Body ground Ignition power supply Power switch off Below 1 V
        Power switch on (IG) 11 to 14 V
        w12-15 (SYSB) - Body ground G - Body ground System power source Power switch off 11 to 14 V
        w12-27 (DBCL) - Body ground B - Body ground Driver seat belt buckle switch signal Driver seat belt unfastened 10 kΩ or higher
        Driver seat belt fastened Below 1 Ω
        w12-28 (DRDC) - Body ground L - Body ground Driver seat belt tension reducer signal Power switch on (IG) 11 to 14 V
      3. Reconnect the w10 and w12 position control ECU assembly LH 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
        w10-1 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
        Slide switch on (Forward) 11 to 14 V
        w10-4 (H+) - Body ground* R - Body ground Headrest motor signal (upward) Headrest switch off Below 1 V
        Headrest switch on (Upward) 11 to 14 V
        w10-5 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
        Slide switch on (Rearward) 11 to 14 V
        w10-6 (LFT+) - Body ground V - Body ground Rear lifter motor signal (upward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Upward) 11 to 14 V
        w10-7 (FRV+) - Body ground B - Body ground Front vertical motor signal (upward) Front vertical switch off Below 1 V
        Front vertical switch on (Upward) 11 to 14 V
        w10-9 (L+) - Body ground V - Body ground Lumbar support adjuster motor signal (forward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Forward) 11 to 14 V
        w10-10 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
        Reclining switch on (Forward) 11 to 14 V
        w11-2 (H-) - Body ground* B - Body ground Headrest motor signal (downward) Headrest switch off Below 1 V
        Headrest switch on (Downward) 11 to 14 V
        w11-3 (L-) - Body ground L - Body ground Lumbar support adjuster motor signal (rearward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Rearward) 11 to 14 V
        w11-4 (FRV-) - Body ground R - Body ground Front vertical motor signal (downward) Front vertical switch off Below 1 V
        Front vertical switch on (Downward) 11 to 14 V
        w11-5 (LFT-) - Body ground G - Body ground Lifter motor signal (downward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Downward) 11 to 14 V
        w11-6 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
        Reclining switch on (Rearward) 11 to 14 V
        w12-2 (FRLS) - Body ground L - Body ground Inner limit switch signal Front seatback edge protector (inner limit switch assembly) off Below 1 V
        Front seatback edge protector (inner limit switch assembly) on 11 to 14 V
        w12-4 (LFLF) - Body ground W - Body ground Power seat switch LH (lumbar support adjuster switch (forward)) signal Lumbar support adjuster switch off 11 to 14 V
        Lumbar support adjuster switch on (Forward) Below 1 V
        w12-5 (HEDU) - Body ground* SB - Body ground Power seat switch LH (headrest switch (upward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Upward) Below 1 V
        w12-6 (FRVU) - Body ground L - Body ground Power seat switch LH (front vertical switch (upward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        w12-7 (LFTU) - Body ground BR - Body ground Power seat switch LH (rear lifter switch (upward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Upward) Below 1 V
        w12-8 (RCLF) - Body ground R - Body ground Power seat switch LH (reclining switch (forward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Forward) Below 1 V
        w12-9 (SLDF) - Body ground B - Body ground Power seat switch LH (slide switch (forward)) signal Slide switch off 11 to 14 V
        Slide switch on (Forward) Below 1 V
        w12-10 (SSFV) - Body ground L - Body ground Front vertical position signal Front vertical function operating Pulse generation
        w12-11 (SSRR) - Body ground V - Body ground Lumbar support position signal Lumbar support adjuster function operating Pulse generation
        w12-12 (SENG) - Body ground BR - Body ground Sensor ground Always Below 1 Ω
        w12-16 (LRLS) - Body ground P - Body ground Outer limit switch signal Front seatback edge protector (outer limit switch assembly) off Below 1 V
        Front seatback edge protector (outer limit switch assembly) on 11 to 14 V
        w12-18 (LFLR) - Body ground L - Body ground Power seat switch LH (lumbar support adjuster switch (rearward)) signal Lumbar support adjuster switch off 11 to 14 V
        w12-19 (HEDD) - Body ground* P - Body ground Power seat switch LH (headrest switch (downward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Downward) Below 1 V
        w12-20 (FRVD) - Body ground V - Body ground Power seat switch LH (front vertical switch (downward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        w12-21 (LFTD) - Body ground LG - Body ground Power seat switch LH (rear lifter switch (downward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Downward) Below 1 V
        w12-22 (RCLR) - Body ground G - Body ground Power seat switch LH (reclining switch (rearward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Rearward) Below 1 V
        w12-23 (SLDR) - Body ground GR - Body ground Power seat switch LH (slide switch (rearward)) signal Slide switch off 11 to 14 V
        Slide switch on (Rearward) Below 1 V
        w12-24 (SSRH) - Body ground* P - Body ground Headrest position signal Headrest adjuster function operating Pulse generation
        w12-25 (SSRL) - Body ground B - Body ground Rear lifter position signal Rear lifter function operating Pulse generation
        w12-26 (SSRS) - Body ground G - Body ground Slide position signal Slide function operating Pulse generation

        • *: for Standard Seat Type

    2. for RHD:

      B000PPAN04

      1. Disconnect the v10 and v12 position control ECU assembly RH connectors.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        v10-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        v10-3 (+B) - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        v12-1 (IG) - Body ground P - Body ground Ignition power supply Power switch off Below 1 V
        Power switch on (IG) 11 to 14 V
        v12-15 (SYSB) - Body ground G - Body ground System power source Power switch off 11 to 14 V
        v12-27 (DBCL) - Body ground B - Body ground Driver seat belt buckle switch signal Driver seat belt unfastened 10 kΩ or higher
        Driver seat belt fastened Below 1 Ω
        v12-28 (DRDC) - Body ground L - Body ground Driver seat belt tension reducer signal Power switch on (IG) 11 to 14 V
      3. Reconnect the v10 and v12 position control ECU assembly RH 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
        v10-1 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
        Slide switch on (Forward) 11 to 14 V
        v10-4 (H+) - Body ground* R - Body ground Headrest motor signal (upward) Headrest switch off Below 1 V
        Headrest switch on (Upward) 11 to 14 V
        v10-5 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
        Slide switch on (Rearward) 11 to 14 V
        v10-6 (LFT+) - Body ground V - Body ground Rear lifter motor signal (upward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Upward) 11 to 14 V
        v10-7 (FRV+) - Body ground B - Body ground Front vertical motor signal (upward) Front vertical switch off Below 1 V
        Front vertical switch on (Upward) 11 to 14 V
        v10-9 (L+) - Body ground V - Body ground Lumbar support adjuster motor signal (forward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Forward) 11 to 14 V
        v10-10 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
        Reclining switch on (Forward) 11 to 14 V
        v10-2 (H-) - Body ground* B - Body ground Headrest motor signal (downward) Headrest switch off Below 1 V
        Headrest switch on (Downward) 11 to 14 V
        v10-3 (L-) - Body ground L - Body ground Lumbar support adjuster motor signal (rearward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Rearward) 11 to 14 V
        v10-4 (FRV-) - Body ground R - Body ground Front vertical motor signal (downward) Front vertical switch off Below 1 V
        Front vertical switch on (Downward) 11 to 14 V
        v10-5 (LFT-) - Body ground G - Body ground Lifter motor signal (downward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Downward) 11 to 14 V
        v10-6 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
        Reclining switch on (Rearward) 11 to 14 V
        v12-2 (FRLS) - Body ground L - Body ground Inner limit switch signal Front seatback edge protector (inner limit switch assembly) off Below 1 V
        Front seatback edge protector (inner limit switch assembly) on 11 to 14 V
        v12-4 (LFLF) - Body ground W - Body ground Power seat switch RH (lumbar support adjuster switch (forward)) signal Lumbar support adjuster switch off 11 to 14 V
        Lumbar support adjuster switch on (Forward) Below 1 V
        v12-5 (HEDU) - Body ground* SB - Body ground Power seat switch RH (headrest switch (upward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Upward) Below 1 V
        v12-6 (FRVU) - Body ground L - Body ground Power seat switch RH (front vertical switch (upward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        v12-7 (LFTU) - Body ground BR - Body ground Power seat switch RH (rear lifter switch (upward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Upward) Below 1 V
        v12-8 (RCLF) - Body ground R - Body ground Power seat switch RH (reclining switch (forward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Forward) Below 1 V
        v12-9 (SLDF) - Body ground B - Body ground Power seat switch RH (slide switch (forward)) signal Slide switch off 11 to 14 V
        Slide switch on (Forward) Below 1 V
        v12-10 (SSFV) - Body ground L - Body ground Front vertical position signal Front vertical function operating Pulse generation
        v12-11 (SSRR) - Body ground V - Body ground Lumbar support position signal Lumbar support adjuster function operating Pulse generation
        v12-12 (SENG) - Body ground BR - Body ground Sensor ground Always Below 1 Ω
        v12-16 (LRLS) - Body ground P - Body ground Outer limit switch signal Front seatback edge protector (outer limit switch assembly) off Below 1 V
        Front seatback edge protector (outer limit switch assembly) on 11 to 14 V
        v12-18 (LFLR) - Body ground L - Body ground Power seat switch RH (lumbar support adjuster switch (rearward)) signal Lumbar support adjuster switch off 11 to 14 V
        v12-19 (HEDD) - Body ground* P - Body ground Power seat switch RH (headrest switch (downward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Downward) Below 1 V
        v12-20 (FRVD) - Body ground V - Body ground Power seat switch RH (front vertical switch (downward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        v12-21 (LFTD) - Body ground LG - Body ground Power seat switch RH (rear lifter switch (downward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Downward) Below 1 V
        v12-22 (RCLR) - Body ground G - Body ground Power seat switch RH (reclining switch (rearward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Rearward) Below 1 V
        v12-23 (SLDR) - Body ground GR - Body ground Power seat switch RH (slide switch (rearward)) signal Slide switch off 11 to 14 V
        Slide switch on (Rearward) Below 1 V
        v12-24 (SSRH) - Body ground* P - Body ground Headrest position signal Headrest adjuster function operating Pulse generation
        v12-25 (SSRL) - Body ground B - Body ground Rear lifter position signal Rear lifter function operating Pulse generation
        v12-26 (SSRS) - Body ground G - Body ground Slide position signal Slide function operating Pulse generation

        • *: for Standard Seat Type

  2. CHECK POSITION CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SEAT)


    1. for LHD:

      B000PPAN04

      1. Disconnect the v10 and v12 position control ECU assembly RH connectors.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        v10-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        v10-3 (+B) - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        v12-1 (IG) - Body ground P - Body ground Ignition power supply Power switch off Below 1 V
        Power switch on (IG) 11 to 14 V
        v12-15 (SYSB) - Body ground G - Body ground System power source Power switch off 11 to 14 V
        v12-27 (DBCL) - Body ground B - Body ground Driver seat belt buckle switch signal Driver seat belt unfastened 10 kΩ or higher
        Driver seat belt fastened Below 1 Ω
        v12-28 (DRDC) - Body ground L - Body ground Driver seat belt tension reducer signal Power switch on (IG) 11 to 14 V
      3. Reconnect the v10 and v12 position control ECU assembly RH 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
        v10-1 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
        Slide switch on (Forward) 11 to 14 V
        v10-4 (H+) - Body ground* R - Body ground Headrest motor signal (upward) Headrest switch off Below 1 V
        Headrest switch on (Upward) 11 to 14 V
        v10-5 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
        Slide switch on (Rearward) 11 to 14 V
        v10-6 (LFT+) - Body ground V - Body ground Rear lifter motor signal (upward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Upward) 11 to 14 V
        v10-7 (FRV+) - Body ground B - Body ground Front vertical motor signal (upward) Front vertical switch off Below 1 V
        Front vertical switch on (Upward) 11 to 14 V
        v10-9 (L+) - Body ground V - Body ground Lumbar support adjuster motor signal (forward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Forward) 11 to 14 V
        v10-10 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
        Reclining switch on (Forward) 11 to 14 V
        v11-2 (H-) - Body ground* B - Body ground Headrest motor signal (downward) Headrest switch off Below 1 V
        Headrest switch on (Downward) 11 to 14 V
        v11-3 (L-) - Body ground L - Body ground Lumbar support adjuster motor signal (rearward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Rearward) 11 to 14 V
        v11-4 (FRV-) - Body ground R - Body ground Front vertical motor signal (downward) Front vertical switch off Below 1 V
        Front vertical switch on (Downward) 11 to 14 V
        v11-5 (LFT-) - Body ground G - Body ground Lifter motor signal (downward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Downward) 11 to 14 V
        v11-6 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
        Reclining switch on (Rearward) 11 to 14 V
        v12-2 (FRLS) - Body ground L - Body ground Inner limit switch signal Front seatback edge protector (inner limit switch assembly) off Below 1 V
        Front seatback edge protector (inner limit switch assembly) on 11 to 14 V
        v12-4 (LFLF) - Body ground W - Body ground Power seat switch RH (lumbar support adjuster switch (forward)) signal Lumbar support adjuster switch off 11 to 14 V
        Lumbar support adjuster switch on (Forward) Below 1 V
        v12-5 (HEDU) - Body ground* SB - Body ground Power seat switch RH (headrest switch (Upward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Upward) Below 1 V
        v12-6 (FRVU) - Body ground L - Body ground Power seat switch RH (front vertical switch (upward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        v12-7 (LFTU) - Body ground BR - Body ground Power seat switch RH (rear lifter switch (upward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Upward) Below 1 V
        v12-8 (RCLF) - Body ground R - Body ground Power seat switch RH (reclining switch (forward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Forward) Below 1 V
        v12-9 (SLDF) - Body ground B - Body ground Power seat switch RH (slide switch (forward)) signal Slide switch off 11 to 14 V
        Slide switch on (Forward) Below 1 V
        v12-11 (SSRR) - Body ground V - Body ground Lumbar support position signal Lumbar support adjuster function operating Pulse generation
        v12-12 (SENG) - Body ground BR - Body ground Sensor ground Always Below 1 Ω
        v12-16 (LRLS) - Body ground P - Body ground Outer limit switch signal Front seatback edge protector (outer limit switch assembly) off Below 1 V
        Front seatback edge protector (outer limit switch assembly) on 11 to 14 V
        v12-18 (LFLR) - Body ground L - Body ground Power seat switch RH (lumbar support adjuster switch (rearward)) signal Lumbar support adjuster switch off 11 to 14 V
        v12-19 (HEDD) - Body ground* P - Body ground Power seat switch RH (headrest switch (downward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Downward) Below 1 V
        v12-20 (FRVD) - Body ground V - Body ground Power seat switch RH (front vertical switch (downward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        v12-21 (LFTD) - Body ground LG - Body ground Power seat switch RH (rear lifter switch (downward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Downward) Below 1 V
        v12-22 (RCLR) - Body ground G - Body ground Power seat switch RH (reclining switch (rearward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Rearward) Below 1 V
        v12-23 (SLDR) - Body ground GR - Body ground Power seat switch RH (slide switch (rearward)) signal Slide switch off 11 to 14 V
        Slide switch on (Rearward) Below 1 V
        v12-24 (SSRH) - Body ground* P - Body ground Headrest position signal Headrest adjuster function operating Pulse generation
        v12-25 (SSRL) - Body ground B - Body ground Rear lifter position signal Rear lifter function operating Pulse generation
        v12-26 (SSRS) - Body ground G - Body ground Slide position signal Slide function operating Pulse generation

        • *: for Standard Seat Type

    2. for RHD:

      B000PPAE01

      1. Disconnect the w10 and w12 position control ECU assembly LH connectors.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        w10-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        w10-3 (+B) - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        w12-1 (IG) - Body ground P - Body ground Ignition power supply Power switch off Below 1 V
        Power switch on (IG) 11 to 14 V
        w12-15 (SYSB) - Body ground G - Body ground System power source Power switch off 11 to 14 V
        w12-27 (DBCL) - Body ground B - Body ground Driver seat belt buckle switch signal Driver seat belt unfastened 10 kΩ or higher
        Driver seat belt fastened Below 1 Ω
        w12-28 (DRDC) - Body ground L - Body ground Driver seat belt tension reducer signal Power switch on (IG) 11 to 14 V
      3. Reconnect the w10 and w12 position control ECU assembly LH 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
        w10-1 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
        Slide switch on (Forward) 11 to 14 V
        w10-4 (H+) - Body ground* R - Body ground Headrest motor signal (upward) Headrest switch off Below 1 V
        Headrest switch on (Upward) 11 to 14 V
        w10-5 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
        Slide switch on (Rearward) 11 to 14 V
        w10-6 (LFT+) - Body ground V - Body ground Rear lifter motor signal (upward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Upward) 11 to 14 V
        w10-7 (FRV+) - Body ground B - Body ground Front vertical motor signal (upward) Front vertical switch off Below 1 V
        Front vertical switch on (Upward) 11 to 14 V
        w10-9 (L+) - Body ground V - Body ground Lumbar support adjuster motor signal (forward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Forward) 11 to 14 V
        w10-10 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
        Reclining switch on (Forward) 11 to 14 V
        w11-2 (H-) - Body ground* B - Body ground Headrest motor signal (downward) Headrest switch off Below 1 V
        Headrest switch on (Downward) 11 to 14 V
        w11-3 (L-) - Body ground L - Body ground Lumbar support adjuster motor signal (rearward) Lumbar support adjuster switch off Below 1 V
        Lumbar support adjuster switch on (Rearward) 11 to 14 V
        w11-4 (FRV-) - Body ground R - Body ground Front vertical motor signal (downward) Front vertical switch off Below 1 V
        Front vertical switch on (Downward) 11 to 14 V
        w11-5 (LFT-) - Body ground G - Body ground Lifter motor signal (downward) Rear lifter switch off Below 1 V
        Rear lifter switch on (Downward) 11 to 14 V
        w11-6 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
        Reclining switch on (Rearward) 11 to 14 V
        w12-2 (FRLS) - Body ground L - Body ground Inner limit switch signal Front seatback edge protector (inner limit switch assembly) off Below 1 V
        Front seatback edge protector (inner limit switch assembly) on 11 to 14 V
        w12-4 (LFLF) - Body ground W - Body ground Power seat switch LH (lumbar support adjuster switch (forward)) signal Lumbar support adjuster switch off 11 to 14 V
        Lumbar support adjuster switch on (Forward) Below 1 V
        w12-5 (HEDU) - Body ground* SB - Body ground Power seat switch LH (headrest switch (Upward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Upward) Below 1 V
        w12-6 (FRVU) - Body ground L - Body ground Power seat switch LH (front vertical switch (upward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        w12-7 (LFTU) - Body ground BR - Body ground Power seat switch LH (rear lifter switch (upward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Upward) Below 1 V
        w12-8 (RCLF) - Body ground R - Body ground Power seat switch LH (reclining switch (forward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Forward) Below 1 V
        w12-9 (SLDF) - Body ground B - Body ground Power seat switch LH (slide switch (forward)) signal Slide switch off 11 to 14 V
        Slide switch on (Forward) Below 1 V
        w12-11 (SSRR) - Body ground V - Body ground Lumbar support position signal Lumbar support adjuster function operating Pulse generation
        w12-12 (SENG) - Body ground BR - Body ground Sensor ground Always Below 1 Ω
        w12-16 (LRLS) - Body ground P - Body ground Outer limit switch signal Front seatback edge protector (outer limit switch assembly) off Below 1 V
        Front seatback edge protector (outer limit switch assembly) on 11 to 14 V
        w12-18 (LFLR) - Body ground L - Body ground Power seat switch LH (lumbar support adjuster switch (rearward)) signal Lumbar support adjuster switch off 11 to 14 V
        w12-19 (HEDD) - Body ground* P - Body ground Power seat switch LH (headrest switch (downward)) signal Headrest switch off 11 to 14 V
        Headrest switch on (Downward) Below 1 V
        w12-20 (FRVD) - Body ground V - Body ground Power seat switch LH (front vertical switch (downward)) signal Front vertical switch off 11 to 14 V
        Front vertical switch on (Upward) Below 1 V
        w12-21 (LFTD) - Body ground LG - Body ground Power seat switch LH (rear lifter switch (downward)) signal Rear lifter switch off 11 to 14 V
        Rear lifter switch on (Downward) Below 1 V
        w12-22 (RCLR) - Body ground G - Body ground Power seat switch LH (reclining switch (rearward)) signal Reclining switch off 11 to 14 V
        Reclining switch on (Rearward) Below 1 V
        w12-23 (SLDR) - Body ground GR - Body ground Power seat switch LH (slide switch (rearward)) signal Slide switch off 11 to 14 V
        Slide switch on (Rearward) Below 1 V
        w12-24 (SSRH) - Body ground* p - Body ground Headrest position signal Headrest adjuster function operating Pulse generation
        w12-25 (SSRL) - Body ground B - Body ground Rear lifter position signal Rear lifter function operating Pulse generation
        w12-26 (SSRS) - Body ground G - Body ground Slide position signal Slide function operating Pulse generation

        • *: for Standard Seat Type

  3. CHECK FRONT MULTIPLEX NETWORK DOOR ECU (FOR DRIVER SEAT)


    1. for LHD:

      B000TB3N10

      1. Disconnect the S9 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        S9-3 (SIG) - Body ground LA-B - Body ground Ignition power supply (IG signal) Power switch off → on (IG) Below 1 V → 11 to 14 V
        S9-4 (CPUB) - Body ground LA-LG - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        S9-6 (BDR) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        S9-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      3. Reconnect the S9 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        S9-24 (M3) - S9-26 (MSWE) V - W-B M3 switch signal for seat memory switch M3 switch on Below 1 V
        M3 switch off 11 to 14 V
        S9-23 (M2) - S9-26 (MSWE) G - W-B M2 switch signal for seat memory switch M2 switch on Below 1 V
        M2 switch off 11 to 14 V
        S9-22 (M1) - S9-26 (MSWE) BE - W-B M1 switch signal for seat memory switch M1 switch on Below 1 V
        M1 switch off 11 to 14 V
        S9-25 (MM) - S9-26 (MSWE) L - W-B SET switch signal for seat memory switch SET switch on Below 1 V
        SET switch off 11 to 14 V
        S9-26 (MSWE) - Body ground W-B - Body ground Ground Always Below 1 Ω
    2. for RHD:

      B000TB3N15

      1. Disconnect the R9 front multiplex network door ECU RH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        R9-3 (SIG) - Body ground LA-B - Body ground Ignition power supply (IG signal) Power switch off → on (IG) Below 1 V → 11 to 14 V
        R9-4 (CPUB) - Body ground LA-LG - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        R9-6 (BDR) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        R9-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      3. Reconnect the R9 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        R9-24 (M3) - R9-26 (MSWE) V - W-B M3 switch signal for seat memory switch M3 switch on Below 1 V
        M3 switch off 11 to 14 V
        R9-23 (M2) - R9-26 (MSWE) G - W-B M2 switch signal for seat memory switch M2 switch on Below 1 V
        M2 switch off 11 to 14 V
        R9-22 (M1) - R9-26 (MSWE) BE - W-B M1 switch signal for seat memory switch M1 switch on Below 1 V
        M1 switch off 11 to 14 V
        R9-25 (MM) - R9-26 (MSWE) L - W-B SET switch signal for seat memory switch SET switch on Below 1 V
        SET switch off 11 to 14 V
        R9-26 (MSWE) - Body ground W-B - Body ground Ground Always Below 1 Ω
  4. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B004CRXC08
    *1 Main Body ECU (Multiplex Network Body ECU) - -

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

      Click here

    2. Connect the driver side junction block assembly.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-32 (IG) - Body ground Note - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      A-31 (BECU) - Body ground Note - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      A-30 (ACC) - Body ground Note - Body ground ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      A-11 (GND1) - Body ground Note - Body ground Ground Always Below 1 Ω
    4. Install the main body ECU (multiplex network body ECU).

      Click here

    5. Measure the voltage and pulse according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P7-1 (FLCY) - Body ground R - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V
      Front door LH closed 4.7 to 5.3 V
      P7-6 (FRCY) - Body ground V - Body ground Front door courtesy light assembly RH INput Front door RH open Below 1 V
      Front door RH closed 4.7 to 5.3 V