FRONT POWER SEAT CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK FRONT POWER SEAT SWITCH LH (for LHD)

    A01IHROE01

    1. Disconnect the W19 and W20 front power seat switch LH connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      W19-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      W19-7 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      W20-12 (SYSB) - Body ground P - Body ground System power source Always 11 to 14 V

    3. Reconnect the W19 and W20 front power seat switch LH connectors.

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

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      W19-3 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
      Slide switch on (Forward) 11 to 14 V
      W19-4 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
      Slide switch on (Rearward) 11 to 14 V
      W19-5 (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
      W19-8 (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
      W19-9 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
      Reclining switch on (Forward) 11 to 14 V
      W19-11 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
      Reclining switch on (Rearward) 11 to 14 V
      W19-10 (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
      W19-12 (LFT-) - Body ground G - Body ground Rear lifter motor signal (downward) Rear lifter switch off Below 1 V
      Rear lifter switch on (Downward) 11 to 14 V
      W20-1 (SGND) - Body ground BR - Body ground Position sensor ground Always Below 1 Ω
      W20-3 (SSFV) - Body ground R - Body ground Front vertical position signal Front vertical function operating Pulse generation
      W20-4 (SSRL) - Body ground P - Body ground Rear lifter position signal Rear lifter function operating Pulse generation
      W20-5 (SSRS) - Body ground G - Body ground Slide position signal Slide function operating Pulse generation
      W20-11 (SSRR) - Body ground V - Body ground Reclining position signal Reclining function operating Pulse generation
      W20-10 (DBCL) - Body ground GR - Body ground Driver seat inner belt signal Engine switch off, front seat operated, driver seat outer belt not fastened → fastened 11 to 14 V → Below 1 V

  2. CHECK FRONT POWER SEAT SWITCH RH (for RHD)

    A01IFVKE13

    1. Disconnect the W6 and W7 front power seat switch RH connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      W6-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      W6-7 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      W7-12 (SYSB) - Body ground P - Body ground System power source Always 11 to 14 V

    3. Reconnect the W6 and W7 front power seat switch RH connectors.

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

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      W6-3 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
      Slide switch on (Forward) 11 to 14 V
      W6-4 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
      Slide switch on (Rearward) 11 to 14 V
      W6-5 (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
      W6-8 (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
      W6-9 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
      Reclining switch on (Forward) 11 to 14 V
      W6-11 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
      Reclining switch on (Rearward) 11 to 14 V
      W6-10 (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
      W6-12 (LFT-) - Body ground G - Body ground Rear lifter motor signal (downward) Rear lifter switch off Below 1 V
      Rear lifter switch on (Downward) 11 to 14 V
      W7-1 (SGND) - Body ground BR - Body ground Position sensor ground Always Below 1 Ω
      W7-3 (SSFV) - Body ground R - Body ground Front vertical position signal Front vertical function operating Pulse generation
      W7-4 (SSRL) - Body ground P - Body ground Rear lifter position signal Rear lifter function operating Pulse generation
      W7-5 (SSRS) - Body ground G - Body ground Slide position signal Slide function operating Pulse generation
      W7-11 (SSRR) - Body ground V - Body ground Reclining position signal Reclining function operating Pulse generation
      W7-10 (DBCL) - Body ground GR - Body ground Driver seat inner belt signal Engine switch off, front seat operated, driver seat outer belt not fastened → fastened 11 to 14 V → Below 1 V

  3. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY LH (for LHD)

    B006NABE10

    1. Disconnect the I28 outer mirror control ECU assembly LH connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      I28-5 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      I28-6 (CPUB) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      I28-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I28-14 (BDR) - Body ground B - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the I28 outer mirror control ECU assrmbly LH connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      I28-1 (MM) - Body ground W - Body ground SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V
      I28-2 (M1) - Body ground B - Body ground M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      I28-3 (M2) - Body ground LG - Body ground M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      I28-4 (M3) - Body ground V - Body ground M3 switch signal for seat memory switch M3 switch on Below 1 V
      M3 switch off 11 to 14 V

  4. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY RH (for RHD)

    A01IKIHE09

    1. Disconnect the I13 outer mirror control ECU assembly RH connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      I13-5 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      I13-6 (CPUB) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      I13-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I13-14 (BDR) - Body ground B - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the I13 outer mirror control ECU assembly RH connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      I13-1 (MM) - Body ground W - Body ground SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V
      I13-2 (M1) - Body ground R - Body ground M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      I13-3 (M2) - Body ground LG - Body ground M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      I13-4 (M3) - Body ground V - Body ground M3 switch signal for seat memory switch M3 switch on Below 1 V
      M3 switch off 11 to 14 V