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


  1. POSITION CONTROL ECU ASSEMBLY LH

    B006RFJE04

    1. Disconnect the Y29, Y30 and Y31 position control ECU assembly LH 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
      Y30-40 (+B) - Body ground G - Body ground Battery power source Always 11 to 14 V
      Y31-2 (+B1) - Body ground R - Body ground Battery power source Always 11 to 14 V
      Y29-2 (+B2) - Body ground L - Body ground Battery power source Always 11 to 14 V
      Y30-20 (IG) - Body ground R - Body ground IG power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      Y31-10 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      Y29-10 (GND2) - Body ground B - Body ground Ground Always Below 1 Ω
      Y30-38 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the Y29, Y30 and Y31 position control ECU assembly LH connectors.

    4. Measure the 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
      Y30-1 (SWS1) - Y30-15 (SWD3) W - LG Rear power seat switch LH (SET) signal Rear power seat switch LH (SET) off → on 11 to 14 V → Below 1 V
      Y30-2 (SWS2) - Y30-15 (SWD3) B - LG Rear power seat switch LH (M1) signal Rear power seat switch LH (M1) off → on 11 to 14 V → Below 1 V
      Y30-21 (SWS3) - Y30-15 (SWD3) G - LG Rear power seat switch LH (M2) signal Rear power seat switch LH (M2) off → on 11 to 14 V → Below 1 V
      Y30-1 (SWS1) - Y30-35 (SWD4) W - SB Rear power seat switch LH (return) signal Rear power seat switch LH (return) off → on 11 to 14 V → Below 1 V
      Y30-2 (SWS2) - Y30-16 (SWD1) B - R Rear power seat switch LH (ottoman [open]) signal Rear power seat switch LH (ottoman [open]) off → on 11 to 14 V → Below 1 V
      Y30-2 (SWS2) - Y30-36 (SWD2) B - BE Rear power seat switch LH (ottoman [close]) signal Rear power seat switch LH (ottoman [close]) off → on 11 to 14 V → Below 1 V
      Y30-21 (SWS3) - Y30-16 (SWD1) G - R Rear power seat switch LH (ottoman [expansion]) signal Rear power seat switch LH (ottoman [expansion]) off → on 11 to 14 V → Below 1 V
      Y30-21 (SWS3) - Y30-36 (SWD2) G - BE Rear power seat switch LH (ottoman [contraction]) signal Rear power seat switch LH (ottoman [contraction]) off → on 11 to 14 V → Below 1 V
      Y30-1 (SWS1) - Y30-16 (SWD1) W - R Rear power seat switch LH (reclining [forward]) signal Rear power seat switch LH (reclining [forward]) off → on 11 to 14 V → Below 1 V
      Y30-1 (SWS1) - Y30-36 (SWD2) W - BE Rear power seat switch LH (reclining (backward)) signal Rear power seat switch LH (reclining [backward]) off → on 11 to 14 V → Below 1 V
      Y30-7 (WISS) - Body ground GR - Body ground Rear power seat switch LH (walk in switch) (walk in) signal Rear power seat switch LH (walk in switch) (walk in) off → on 11 to 14 V → Below 1 V
      Y30-30 (WIRS) - Body ground Y - Body ground Rear power seat switch LH (walk in switch) (walk in return) signal Rear power seat switch LH (walk in switch) (walk in return) off → on 11 to 14 V → Below 1 V
      Y30-4 (WIST) - Body ground B - Body ground Rear control switch LH (walk in) signal Rear control switch LH (walk in) off → on 11 to 14 V → Below 1 V
      Y30-25 (WIRT) - Body ground P - Body ground Rear control switch LH (walk in return) signal Rear control switch LH (walk in return) off → on 11 to 14 V → Below 1 V
      Y30-27 (LRS) - Body ground BR - Body ground Rear seat lock open lever sub-assembly LH signal Slide lock release lever LH not operated → operated 11 to 14 V → Below 1 V
      Y30-6 (BLC) - Body ground B - Body ground Rear left seat belt buckle switch signal Rear left seat belt unfastened → fastened 11 to 14 V → Below 1 V
      Y30-9 (RTRN) - Body ground G - Body ground Rear power seat return switch LH signal Rear power seat return switch LH off → on 11 to 14 V → Below 1 V
      Y30-26 (STS) - Body ground R - Body ground Occupant detection sensor signal Occupant not in rear LH seat → occupant in rear LH seat 11 to 14 V → Below 1 V
      Y30-24 (P) - Body ground L - Body ground P shift position switch signal Shift lever in P → shift lever not in P Below 1 V → 10.6 V
      Y29-6 (OG1+) - Body ground BE - Body ground Ottoman motor (open/close) operation signal Rear power seat switch LH (ottoman [open]) on 11 to 14 V
      Y29-9 (OG1-) - Body ground BR - Body ground Ottoman motor (open/close) operation signal Rear power seat switch LH (ottoman [close]) on 11 to 14 V
      Y31-7 (OTE+) - Body ground P - Body ground Ottoman motor (expansion/contraction) operation signal Rear power seat switch LH (ottoman [expansion]) on 11 to 14 V
      Y31-3 (OTE-) - Body ground V - Body ground Ottoman motor (expansion/contraction) operation signal Rear power seat switch LH (ottoman [contraction]) on 11 to 14 V
      Y29-5 (RCL1+) - Body ground G - Body ground Reclining motor (inner side) operation signal Rear power seat switch LH (reclining [forward]) on 11 to 14 V
      Y29-4 (RCL1-) - Body ground B - Body ground Reclining motor (inner side) operation signal Rear power seat switch LH (reclining [backward]) on 11 to 14 V
      Y31-5 (RCL2+) - Body ground R - Body ground Reclining motor (outer side) operation signal Rear power seat switch LH (reclining [forward]) on 11 to 14 V
      Y31-4 (RCL2-) - Body ground L - Body ground Reclining motor (outer side) operation signal Rear power seat switch LH (reclining [backward]) on 11 to 14 V
      Y29-7 (LR+) - Body ground W - Body ground Slide lock motor operation signal Slide lock operation performed 11 to 14 V
      Y29-3 (LR-) - Body ground Y - Body ground Slide lock motor operation signal Slide lock release operation performed 11 to 14 V
      Y30-19 (PVC1) - Y30-11 (SG) SB - R Reclining and ottoman (open/close) position sensor power source Rear power seat switch LH (reclining or ottoman [open/close]) on 5 to 6.6 V
      Y30-32 (SRCL) - Body ground G - Body ground Reclining position signal Rear power seat switch LH (reclining) on Pulse generation
      Y30-12 (SOTG) - Body ground Y - Body ground Ottoman (open/close) position signal Rear power seat switch LH (ottoman [open/close]) on Pulse generation
      Y30-14 (SOTE) - Body ground BR - Body ground Ottoman (expansion/contraction) position signal Rear power seat switch LH (ottoman [expansion/contraction]) on Pulse generation
      Y30-28 (LSW1) - Body ground B - Body ground No. 1 limit switch signal Slide lock release lever LH not operated → operated Below 1 V → 11 to 14 V
      Y30-29 (LSW3) - Body ground Y - Body ground No. 2 limit switch signal Slide lock release lever LH not operated → operated Below 1 V → 11 to 14 V

  2. POSITION CONTROL ECU ASSEMBLY RH

    B006RFJE03

    1. Disconnect the Y9, Y10 and Y11 position control ECU assembly RH 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
      Y10-40 (+B) - Body ground G - Body ground Battery power source Always 11 to 14 V
      Y11-2 (+B1) - Body ground R - Body ground Battery power source Always 11 to 14 V
      Y9-2 (+B2) - Body ground L - Body ground Battery power source Always 11 to 14 V
      Y10-20 (IG) - Body ground R - Body ground IG power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      Y11-10 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      Y9-10 (GND2) - Body ground B - Body ground Ground Always Below 1 Ω
      Y10-38 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the Y9, Y10 and Y11 position control ECU assembly RH connectors.

    4. Measure the 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
      Y10-1 (SWS1) - Y10-15 (SWD3) W - LG Rear power seat switch RH (SET) signal Rear power seat switch RH (SET) off → on 11 to 14 V → Below 1 V
      Y10-2 (SWS2) - Y10-15 (SWD3) B - LG Rear power seat switch RH (M1) signal Rear power seat switch RH (M1) off → on 11 to 14 V → Below 1 V
      Y10-21 (SWS3) - Y10-15 (SWD3) G - LG Rear power seat switch RH (M2) signal Rear power seat switch RH (M2) off → on 11 to 14 V → Below 1 V
      Y10-1 (SWS1) - Y10-35 (SWD4) W - SB Rear power seat switch RH (return) signal Rear power seat switch RH (return) off → on 11 to 14 V → Below 1 V
      Y10-2 (SWS2) - Y10-16 (SWD1) B - R Rear power seat switch RH (ottoman [open]) signal Rear power seat switch RH (ottoman [open]) off → on 11 to 14 V → Below 1 V
      Y10-2 (SWS2) - Y10-36 (SWD2) B - BE Rear power seat switch RH (ottoman [close]) signal Rear power seat switch RH (ottoman [close]) off → on 11 to 14 V → Below 1 V
      Y10-21 (SWS3) - Y10-16 (SWD1) G - R Rear power seat switch RH (ottoman [expansion]) signal Rear power seat switch RH (ottoman [expansion]) off → on 11 to 14 V → Below 1 V
      Y10-21 (SWS3) - Y10-36 (SWD2) G - BE Rear power seat switch RH (ottoman [contraction]) signal Rear power seat switch RH (ottoman [contraction]) off → on 11 to 14 V → Below 1 V
      Y10-1 (SWS1) - Y10-16 (SWD1) W - R Rear power seat switch RH (reclining [forward]) signal Rear power seat switch RH (reclining [forward]) off → on 11 to 14 V → Below 1 V
      Y10-1 (SWS1) - Y10-36 (SWD2) W - BE Rear power seat switch RH (reclining [backward]) signal Rear power seat switch RH (reclining [backward]) off → on 11 to 14 V → Below 1 V
      Y10-7 (WISS) - Body ground GR - Body ground Rear power seat switch RH (walk in switch) (walk in) signal Rear power seat switch RH (walk in switch) (walk in) off → on 11 to 14 V → Below 1 V
      Y10-30 (WIRS) - Body ground Y - Body ground Rear power seat switch RH (walk in switch) (walk in return) signal Rear power seat switch RH (walk in switch) (walk in return) off → on 11 to 14 V → Below 1 V
      Y10-4 (WIST) - Body ground B - Body ground Rear control switch RH (walk in) signal Rear control switch RH (walk in) off → on 11 to 14 V → Below 1 V
      Y10-25 (WIRT) - Body ground P - Body ground Rear control switch RH (walk in return) signal Rear control switch RH (walk in return) off → on 11 to 14 V → Below 1 V
      Y10-27 (LRS) - Body ground BR - Body ground Rear seat lock open lever sub-assembly RH signal Slide lock release lever RH not operated → operated 11 to 14 V → Below 1 V
      Y10-6 (BLC) - Body ground B - Body ground Rear left seat belt buckle switch signal Rear right seat belt unfastened → fastened 11 to 14 V → Below 1 V
      Y10-9 (RTRN) - Body ground G - Body ground Rear power seat return switch RH signal Rear power seat return switch RH off → on 11 to 14 V → Below 1 V
      Y10-26 (STS) - Body ground R - Body ground Occupant detection sensor signal Occupant not in rear RH seat → occupant in rear RH seat 11 to 14 V → Below 1 V
      Y10-24 (P) - Body ground L - Body ground P shift position switch signal Shift lever in P → shift lever not in P Below 1 V → 10.6 V
      Y9-6 (OG1+) - Body ground BE - Body ground Ottoman motor (open/close) operation signal Rear power seat switch RH (ottoman [open]) on 11 to 14 V
      Y9-9 (OG1-) - Body ground BR - Body ground Ottoman motor (open/close) operation signal Rear power seat switch RH (ottoman [close]) on 11 to 14 V
      Y11-7 (OTE+) - Body ground P - Body ground Ottoman motor (expansion/contraction) operation signal Rear power seat switch RH (ottoman [expansion]) on 11 to 14 V
      Y11-3 (OTE-) - Body ground V - Body ground Ottoman motor (expansion/contraction) operation signal Rear power seat switch RH (ottoman [contraction]) on 11 to 14 V
      Y9-5 (RCL1+) - Body ground G - Body ground Reclining motor (inner side) operation signal Rear power seat switch RH (reclining [forward]) on 11 to 14 V
      Y9-4 (RCL1-) - Body ground B - Body ground Reclining motor (inner side) operation signal Rear power seat switch RH (reclining [backward]) on 11 to 14 V
      Y11-5 (RCL2+) - Body ground R - Body ground Reclining motor (outer side) operation signal Rear power seat switch RH (reclining [forward]) on 11 to 14 V
      Y11-4 (RCL2-) - Body ground L - Body ground Reclining motor (outer side) operation signal Rear power seat switch RH (reclining [backward]) on 11 to 14 V
      Y9-7 (LR+) - Body ground W - Body ground Slide lock motor operation signal Slide lock operation performed 11 to 14 V
      Y9-3 (LR-) - Body ground Y - Body ground Slide lock motor operation signal Slide lock release operation performed 11 to 14 V
      Y10-19 (PVC1) - Y10-11 (SG) SB - R Reclining and ottoman (open/close) position sensor power source Rear power seat switch RH (reclining or ottoman [open/close]) on 5 to 6.6 V
      Y10-32 (SRCL) - Body ground G - Body ground Reclining position signal Rear power seat switch RH (reclining) on Pulse generation
      Y10-12 (SOTG) - Body ground Y - Body ground Ottoman (open/close) position signal Rear power seat switch RH (ottoman [open/close]) on Pulse generation
      Y10-14 (SOTE) - Body ground BR - Body ground Ottoman (expansion/contraction) position signal Rear power seat switch RH (ottoman [expansion/contraction]) on Pulse generation
      Y10-28 (LSW1) - Body ground B - Body ground No. 1 limit switch signal Slide lock release lever RH not operated → operated Below 1 V → 11 to 14 V
      Y10-29 (LSW3) - Body ground Y - Body ground No. 2 limit switch signal Slide lock release lever RH not operated → operated Below 1 V → 11 to 14 V
      Y10-8 (SWS4) - Body ground* R - Body ground No. 3 limit switch signal Rear seat lock control lever sub-assemblyr RH not operated → operated Below 1 V → 11 to 14 V

      • *: w/ Manual Walk-in Mechanism

  3. MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B006OZRC06
    *1 Main Body ECU (Multiplex Network Body ECU) - -

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

      Click here

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A-32 (IG) - Body ground None - Body ground Power source (IG) Engine switch off →on (IG) Below 1 V → 11 to 14 V
      A-30 (ACC) - Body ground None - Body ground Power source (ACC) Engine switch off →on (ACC) Below 1 V → 11 to 14 V
      A-31 (BECU) - Body ground None - Body ground Power source Always 11 to 14 V
      A-11 (GND1) - Body ground None - Body ground Ground Always Below 1 Ω

    3. Install the main body ECU (multiplex network body ECU) to the junction block assembly LH.

      Click here

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      G62-16 (SFTP) - Body ground R - Body ground P shift position switch signal Shift lever in P → shift lever not in P Below 1 V → 10.6 V