POWER MIRROR CONTROL SYSTEM(w/ Memory) TERMINALS OF ECU


  1. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)

    A01F7M8C10
    *A for LHD *B for RHD

    1. Disconnect the S12*1 or R12*2 outer mirror control ECU assembly (driver door) connector.


      • *1: for LHD

      • *2: for RHD

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S12-14 (BDR) - Body ground G - Body ground +B power supply Always 11 to 14 V
      S12-6 (CPUB) - Body ground L - Body ground +B power supply Always 11 to 14 V
      S12-5 (SIG) - Body ground B - Body ground Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V
      S12-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R12-14 (BDR) - Body ground B - Body ground +B power supply Always 11 to 14 V
      R12-6 (CPUB) - Body ground LG - Body ground +B power supply Always 11 to 14 V
      R12-5 (SIG) - Body ground R - Body ground Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V
      R12-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the S12*1 or R12*2 outer mirror control ECU assembly (driver door) connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S13-3 (MR+) - Body ground P - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (driver door) being retracted 11 to 14 V
      Outer rear view mirror assembly (driver door) stopped Below 1 V
      S13-11 (MR-) - Body ground R - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (driver door) returning 11 to 14 V
      Outer rear view mirror assembly (driver door) stopped Below 1 V
      S13-1 (LMVR) - S13-10 (LM+R) V - B Vertical mirror motor drive voltage Driver door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
      S13-10 (LM+R) - S13-1 (LMVR) B - V Vertical mirror motor drive voltage Driver door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
      S13-10 (LM+R) - S13-9 (LMHR) B - GR Horizontal mirror motor drive voltage Driver door mirror surface moving right → stopped 11 to 14 V → Below 1 V
      S13-9 (LMHR) - S13-10 (LM+R) GR - B Horizontal mirror motor drive voltage Driver door mirror surface moving left → stopped 11 to 14 V → Below 1 V
      S13-4 (HTR+) - S13-12 (HTR-) G - W-B Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V
      S13-5 (LVC) - S12-7 (GND) Y - W-B Mirror position sensor power supply Engine switch on (IG) 4.75 to 5.25 V
      S13-6 (VSSR) - S12-7 (GND) SB - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      S13-13 (HSSR) - S12-7 (GND) L - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      S13-7 (EC+) - S13-15 (EC-) LG - W Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror on 1.05 to 1.35 V
      Automatic glare-resistant EC mirror off Below 1 V
      S12-4 (M3) - S12-7 (GND) R - W-B M3 switch signal for seat memory switch M3 switch on Below 1 V
      M3 switch off 11 to 14 V
      S12-3 (M2) - S12-7 (GND) LG - W-B M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      S12-2 (M1) - S12-7 (GND) BE - W-B M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      S12-1 (MM) - S12-7 (GND) L - W-B SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R13-3 (MR+) - Body ground P - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (driver door) being retracted 11 to 14 V
      Outer rear view mirror assembly (driver door) stopped Below 1 V
      R13-11 (MR-) - Body ground R - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (driver door) returning 11 to 14 V
      Outer rear view mirror assembly (driver door) stopped Below 1 V
      R13-1 (RMVR) - R13-10 (RM+R) V - B Vertical mirror motor drive voltage Driver door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
      R13-10 (RM+R) - R13-1 (RMVR) B - V Vertical mirror motor drive voltage Driver door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
      R13-10 (RM+R) - R13-9 (RMHR) B - GR Horizontal mirror motor drive voltage Driver door mirror surface moving right → stopped 11 to 14 V → Below 1 V
      R13-9 (RMHR) - R13-10 (RM+R) GR - B Horizontal mirror motor drive voltage Driver door mirror surface moving left → stopped 11 to 14 V → Below 1 V
      R13-4 (HTR+) - R13-12 (HTR-) G - W-B Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V
      R13-5 (RVC) - R12-7 (GND) Y - W-B Mirror position sensor power supply Engine switch on (IG) 4.75 to 5.25 V
      R13-6 (VSSR) - R12-7 (GND) SB - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      R13-13 (HSSR) - R12-7 (GND) L - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      R13-7 (EC+) - R13-15 (EC-) LG - W Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror on 1.05 to 1.35 V
      Automatic glare-resistant EC mirror off Below 1 V
      R12-4 (M3) - R12-7 (GND) R - W-B M3 switch signal for seat memory switch M3 switch on Below 1 V
      M3 switch off 11 to 14 V
      R12-3 (M2) - R12-7 (GND) LG - W-B M2 switch signal for seat memory switch M2 switch on Below 1 V
      M2 switch off 11 to 14 V
      R12-2 (M1) - R12-7 (GND) BE - W-B M1 switch signal for seat memory switch M1 switch on Below 1 V
      M1 switch off 11 to 14 V
      R12-1 (MM) - R12-7 (GND) L - W-B SET switch signal for seat memory switch SET switch on Below 1 V
      SET switch off 11 to 14 V

  2. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR)

    A01F7M8C11
    *A for LHD *B for RHD

    1. Disconnect the R12*1 or S12*2 outer mirror control ECU assembly (front passenger door) connector.


      • *1: for LHD

      • *2: for RHD

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R12-14 (BDR) - Body ground B - Body ground +B power supply Always 11 to 14 V
      R12-6 (CPUB) - Body ground LG - Body ground +B power supply Always 11 to 14 V
      R12-5 (SIG) - Body ground R - Body ground Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V
      R12-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S12-14 (BDR) - Body ground G - Body ground +B power supply Always 11 to 14 V
      S12-6 (CPUB) - Body ground L - Body ground +B power supply Always 11 to 14 V
      S12-5 (SIG) - Body ground B - Body ground Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V
      S12-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the R12*1 or S12*2 outer mirror control ECU assembly (front passenger door) connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R13-3 (MR+) - Body ground P - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (front passenger door) being retracted 11 to 14 V
      Outer rear view mirror assembly (front passenger door) stopped Below 1 V
      R13-11 (MR-) - Body ground R - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (front passenger door) returning 11 to 14 V
      Outer rear view mirror assembly (front passenger door) stopped Below 1 V
      R13-1 (RMVR) - R13-10 (RM+R) V - B Vertical mirror motor drive voltage Front passenger door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
      R13-10 (RM+R) - R13-1 (RMVR) B - V Vertical mirror motor drive voltage Front passenger door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
      R13-10 (RM+R) - R13-9 (RMHR) B - GR Horizontal mirror motor drive voltage Front passenger door mirror surface moving right → stopped 11 to 14 V → Below 1 V
      R13-9 (RMHR) - R13-10 (RM+R) GR - B Horizontal mirror motor drive voltage Front passenger door mirror surface moving left → stopped 11 to 14 V → Below 1 V
      R13-4 (HTR+) - R13-12 (HTR-) G - W-B Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V
      R13-5 (RVC) - R12-7 (GND) Y - W-B Mirror position sensor power supply Engine switch on (IG) 4.75 to 5.25 V
      R13-6 (VSSR) - R12-7 (GND) SB - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      R13-13 (HSSR) - R12-7 (GND) L - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      R13-7 (EC+) - R13-15 (EC-) LG - W Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror on 1.05 to 1.35 V
      Automatic glare-resistant EC mirror off Below 1 V
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S13-3 (MR+) - Body ground P - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (front passenger door) being retracted 11 to 14 V
      Outer rear view mirror assembly (front passenger door) stopped Below 1 V
      S13-11 (MR-) - Body ground R - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (front passenger door) returning 11 to 14 V
      Outer rear view mirror assembly (front passenger door) stopped Below 1 V
      S13-1 (LMVR) - S13-10 (LM+R) V - B Vertical mirror motor drive voltage Front passenger door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
      S13-10 (LM+R) - S13-1 (LMVR) B - V Vertical mirror motor drive voltage Front passenger door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
      S13-10 (LM+R) - S13-9 (LMHR) B - GR Horizontal mirror motor drive voltage Front passenger door mirror surface moving right → stopped 11 to 14 V → Below 1 V
      S13-9 (LMHR) - S13-10 (LM+R) GR - B Horizontal mirror motor drive voltage Front passenger door mirror surface moving left → stopped 11 to 14 V → Below 1 V
      S13-4 (HTR+) - S13-12 (HTR-) G - W-B Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V
      S13-5 (LVC) - S12-7 (GND) Y - W-B Mirror position sensor power supply Engine switch on (IG) 4.75 to 5.25 V
      S13-6 (VSSR) - S12-7 (GND) SB - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      S13-13 (HSSR) - S12-7 (GND) L - W-B Mirror position sensor signal Engine switch on (IG) 0 to 5 V
      S13-7 (EC+) - S13-15 (EC-) LG - W Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror on 1.05 to 1.35 V
      Automatic glare-resistant EC mirror off Below 1 V