REAR POWER SEAT CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK FOLD SEAT CONTROL ECU (REAR RIGHT SEAT)

    A01H782N07

    1. Disconnect the h3 and h4 fold seat control ECU (rear right seat) connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      h3-1 (ECUB) - Body ground W - Body ground Battery power source Power switch off 11 to 14 V
      h3-3 (IG) - Body ground B - Body ground IG power source Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      h3-40 (IND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      h4-1 (IND1) - Body ground B - Body ground Battery power source Power switch off 11 to 14 V
      h4-2 (+B) - Body ground W - Body ground Battery power source Power switch off 11 to 14 V
      h4-9 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      h4-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the h3 and h4 fold seat control ECU (rear right seat) connectors.

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

    5. Check for pulses according to the value(s) in the table below.

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      h3-7 (RCLR) - Body ground SB - Body ground Rear power seat switch signal (return, backward) Rear power seat switch (rear right seat) off → on (return, backward) 11 to 14 V → Below 1 V
      h3-8 (SG1) - Body ground G - Body ground Ground Always Below 1 Ω
      h3-10 (SFLD) - h3-8 (SG1) P - G Folding position sensor signal Motor operating Pulse generation
      h3-11 (SV1) - h3-8 (SG1) R - G Folding position sensor power supply Power switch off → on (IG) Below 1 V → 5.5 to 8 V
      h3-12 (RCLF) - Body ground G - Body ground Rear power seat switch (rear right seat) signal (fold, forward) Rear power seat switch (rear right seat) off → on (fold, forward) 11 to 14 V → Below 1 V
      h3-13 (RTN2) - Body ground LG - Body ground No. 1 fold seat switch assembly (rear right seat) signal (return) No. 1 fold seat switch assembly (rear right seat) off → on (return) 11 to 14 V → Below 1 V
      h3-14 (FLD2) - Body ground V - Body ground No. 1 fold seat switch assembly (rear right seat) signal (fold) No. 1 fold seat switch assembly (rear right seat) off → on (fold) 11 to 14 V → Below 1 V
      h3-17 (P) - Body ground GR - Body ground Driving condition signal

      • Power switch on (IG), shift lever is P → other than P

      • Power switch on (IG), stop light switch assembly on → off

      • Power switch on (IG), parking brake switch assembly on → off

      		 11 to 14 V → Below 1 V
      Power switch off 11 to 14 V
      h3-18 (R CL) - Body ground P - Body ground Rear door courtesy light switch assembly RH signal Rear door RH opened → closed 11 to 14 V → Below 1 V
      h3-19 (BDCY) - Body ground R - Body ground Back door courtesy light switch assembly signal Back door opened → closed 11 to 14 V → Below 1 V
      h3-25 (RTRN) - Body ground B - Body ground No. 2 fold seat switch assembly (rear right seat) signal (return) No. 2 fold seat switch assembly (rear right seat) off → on (return) 11 to 14 V → Below 1 V
      h3-26 (FOLD) - Body ground L - Body ground No. 2 fold seat switch assembly (rear right seat) signal (fold) No. 2 fold seat switch assembly (rear right seat) off → on (fold) 11 to 14 V → Below 1 V
      h4-3 (RCL+) - Body ground P - Body ground Reclining motor operation signal Rear power seat switch (rear right seat) off → on (forward) Below 1 V → 11 to 14 V
      h4-4 (FLD+) - Body ground L - Body ground Fold motor operation signal Rear power seat switch (rear right switch), No. 1 fold seat switch assembly (rear right switch) or No. 2 fold seat switch assembly (rear right switch) off → on (fold) Below 1 V → 11 to 14 V
      h4-7 (RCL-) - Body ground LG - Body ground Reclining motor operation signal Rear power seat switch (rear right seat) off → on (backward) Below 1 V → 11 to 14 V
      h4-8 (FLD-) - Body ground SB - Body ground Return motor operation signal Rear power seat switch (rear right switch), No. 1 fold seat switch assembly (rear right switch) or No. 2 fold seat switch assembly (rear right switch) off → on (return) Below 1 V → 11 to 14 V

  2. CHECK FOLD SEAT CONTROL ECU (REAR LEFT SEAT)

    A01H782N08

    1. Disconnect the i3 and i4 fold seat control ECU (rear left seat) connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      i3-1 (ECUB) - Body ground W - Body ground Battery power source Power switch off 11 to 14 V
      i3-3 (IG) - Body ground B - Body ground IG power source Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      i3-40 (IND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      i4-1 (IND1) - Body ground B - Body ground Battery power source Power switch off 11 to 14 V
      i4-2 (+B) - Body ground W - Body ground Battery power source Power switch off 11 to 14 V
      i4-9 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      i4-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the i3 and i4 fold seat control ECU (rear left seat) connectors.

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

    5. Check for pulses according to the value(s) in the table below.

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      i3-7 (RCLR) - Body ground SB - Body ground Rear power seat switch signal (return, backward) Rear power seat switch (rear left seat) off → on (return, backward) 11 to 14 V → Below 1 V
      i3-8 (SG1) - Body ground G - Body ground Ground Always Below 1 Ω
      i3-10 (SFLD) - i3-8 (SG1) P - G Folding position sensor signal Motor operating Pulse generation
      i3-11 (SV1) - i3-8 (SG1) R - G Folding position sensor power supply Power switch off → on (IG) Below 1 V → 5.5 to 8 V
      i3-12 (RCLF) - Body ground G - Body ground Rear power seat switch (rear left seat) signal (fold, forward) Rear power seat switch (rear left seat) off → on (fold, forward) 11 to 14 V → Below 1 V
      i3-13 (RTN2) - Body ground LG - Body ground No. 1 fold seat switch assembly (rear left seat) signal (return) No. 1 fold seat switch assembly (rear left seat) off → on (return) 11 to 14 V → Below 1 V
      i3-14 (FLD2) - Body ground V - Body ground No. 1 fold seat switch assembly (rear left seat) signal (fold) No. 1 fold seat switch assembly (rear left seat) off → on (fold) 11 to 14 V → Below 1 V
      i3-17 (P) - Body ground GR - Body ground Driving condition signal

      • Power switch on (IG), shift lever is P → other than P

      • Power switch on (IG), stop light switch assembly on → off

      • Power switch on (IG), parking brake switch assembly on → off

      		 11 to 14 V → Below 1 V
      Power switch off 11 to 14 V
      i3-18 (R CL) - Body ground P - Body ground Rear door courtesy light switch assembly LH signal Rear door LH opened → closed 11 to 14 V → Below 1 V
      i3-19 (BDCY) - Body ground R - Body ground Back door courtesy light switch assembly signal Back door opened → closed 11 to 14 V → Below 1 V
      i3-25 (RTRN) - Body ground B - Body ground No. 2 fold seat switch assembly (rear left seat) signal (return) No. 2 fold seat switch assembly (rear left seat) off → on (return) 11 to 14 V → Below 1 V
      i3-26 (FOLD) - Body ground L - Body ground No. 2 fold seat switch assembly (rear left seat) signal (fold) No. 2 fold seat switch assembly (rear left seat) off → on (fold) 11 to 14 V → Below 1 V
      i4-3 (RCL+) - Body ground P - Body ground Reclining motor operation signal Rear power seat switch (rear left seat) off → on (forward) Below 1 V → 11 to 14 V
      i4-4 (FLD+) - Body ground L - Body ground Fold motor operation signal Rear power seat switch (rear left switch), No. 1 fold seat switch assembly (rear left switch) or No. 2 fold seat switch assembly (rear left switch) off → on (fold) Below 1 V → 11 to 14 V
      i4-7 (RCL-) - Body ground LG - Body ground Reclining motor operation signal Rear power seat switch (rear left seat) off → on (backward) Below 1 V → 11 to 14 V
      i4-8 (FLD-) - Body ground SB - Body ground Return motor operation signal Rear power seat switch (rear left switch), No. 1 fold seat switch assembly (rear left switch) or No. 2 fold seat switch assembly (rear left switch) off → on (return) Below 1 V → 11 to 14 V