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


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

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    1. Disconnect the g11 and g12 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
      g11-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      g11-7 (+B) - Body ground W - Body ground Battery power supply Power switch off 11 to 14 V
      g12-12 (SYSB) - Body ground P - Body ground System power source Power switch off 11 to 14 V
      g12-3 (IG) - Body ground P - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      g12-10 (DBCL) - Body ground GR - Body ground Driver seat belt buckle switch signal Driver seat belt fastened Below 1 Ω
      Driver seat belt unfastened 10 kΩ or higher

    3. Reconnect the g11 and g12 front power seat switch LH connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      g11-6 (+B2) - Body ground SB - Body ground Lumbar support adjuster power source Power switch off 11 to 14 V
      g11-1 (GND2) - Body ground W-B - Body ground Lumbar support adjuster ground Always Below 1 Ω
      g11-3 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
      Slide switch on (Forward) 11 to 14 V
      g11-4 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
      Slide switch on (Rearward) 11 to 14 V
      g11-5 (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
      g11-8 (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
      g11-9 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
      Reclining switch on (Forward) 11 to 14 V
      g11-11 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
      Reclining switch on (Rearward) 11 to 14 V
      g11-10 (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
      g11-12 (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
      g12-1 (SGND) - Body ground BR - Body ground Position sensor ground Always Below 1 Ω
      g12-5 (SSRS) - g12-1 (SGND) G- BR Slide position signal Slide function operating 4.8 to 5.1 V

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

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    1. Disconnect the f6 and f7 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
      f6-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      f6-7 (+B) - Body ground W - Body ground Battery power supply Power switch off 11 to 14 V
      f7-12 (SYSB) - Body ground P - Body ground System power source Power switch off 11 to 14 V
      f7-3 (IG) - Body ground P - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      f7-10 (DBCL) - Body ground GR - Body ground Driver seat belt buckle switch signal Driver seat belt fastened Below 1 Ω
      Driver seat belt unfastened 10 kΩ or higher

    3. Reconnect the f6 and f7 front power seat switch RH connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      f6-6 (+B2) - Body ground SB - Body ground Lumbar support adjuster power source Always 11 to 14 V
      f6-1 (GND2) - Body ground W-B - Body ground Lumbar support adjuster ground Always Below 1 Ω
      f6-3 (SLD+) - Body ground L - Body ground Slide motor signal (forward) Slide switch off Below 1 V
      Slide switch on (Forward) 11 to 14 V
      f6-4 (SLD-) - Body ground GR - Body ground Slide motor signal (rearward) Slide switch off Below 1 V
      Slide switch on (Rearward) 11 to 14 V
      f6-5 (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
      f6-8 (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
      f6-9 (RCL+) - Body ground P - Body ground Reclining motor signal (forward) Reclining switch off Below 1 V
      Reclining switch on (Forward) 11 to 14 V
      f6-11 (RCL-) - Body ground LG - Body ground Reclining motor signal (rearward) Reclining switch off Below 1 V
      Reclining switch on (Rearward) 11 to 14 V
      f6-10 (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
      f6-12 (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
      f7-1 (SGND) - Body ground BR - Body ground Position sensor ground Always Below 1 Ω
      f7-5 (SSRS) - f7-1 (SGND) G- BR Slide position signal Slide function operating 4.8 to 5.1 V

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

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    1. Disconnect the M5 outer mirror control ECU assembly (for Driver Side) 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
      M5-5 (SIG) - Body ground GR - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      M5-6 (CPUB) - Body ground GR - Body ground Battery power supply Power switch off 11 to 14 V
      M5-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M5-14 (BDR) - Body ground Y - Body ground Battery power supply Power switch off 11 to 14 V

    3. Reconnect the M5 outer mirror control ECU assembly (for Driver Side) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      M5-1 (MM) - M5-7 (GND) L - W-B SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V
      M5-2 (M1) - M5-7 (GND) G - W-B M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      M5-3 (M2) - M5-7 (GND) P - W-B M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      M5-4 (M3) - M5-7 (GND) B - W-B 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 (for Driver Side) (for RHD)

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    1. Disconnect the L5 outer mirror control ECU assembly (for Driver Side) 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
      L5-5 (SIG) - Body ground P - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L5-6 (CPUB) - Body ground B - Body ground Battery power supply Power switch off 11 to 14 V
      L5-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L5-14 (BDR) - Body ground LG - Body ground Battery power supply Power switch off 11 to 14 V

    3. Reconnect the L5 outer mirror control ECU assembly (for Driver Side) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L5-1 (MM) - L5-7 (GND) L - W-B SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V
      L5-2 (M1) - L5-7 (GND) G - W-B M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      L5-3 (M2) - L5-7 (GND) P - W-B M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      L5-4 (M3) - L5-7 (GND) B - W-B M3 switch signal for seat memory switch M3 switch on Below 1 V
      M3 switch off 11 to 14 V