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POWER MIRROR CONTROL SYSTEM TERMINALS OF ECU

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  1. CHECK FRONT MULTIPLEX NETWORK DOOR ECU (DRIVER DOOR)


    1. B004YL6N20

      for LHD:


      1. Disconnect the H31 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H31-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        H31-3 (SIG) - Body ground B - Body ground Ignition power supply (IG signal) Power switch off → on (IG) Below 1 V → 11 to 14 V
        H31-4 (CPUB) - Body ground L - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        H31-6 (BDR) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V

      3. Reconnect the H31 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H31-9 (SGND) - Body ground R - Body ground Ground Always Below 1 Ω
        H31-11 (LIN1) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
        H31-12 (LIN2) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
        H31-22 (M1) - H31-26 (MSWE) BE - LA-BR M1 switch signal for seat memory switch LH M1 switch on Below 1 V
        M1 switch off 11 to 14 V
        H31-23 (M2) - H31-26 (MSWE) G - LA-BR M2 switch signal for seat memory switch LH M2 switch on Below 1 V
        M2 switch off 11 to 14 V
        H31-24 (M3) - H31-26 (MSWE) V - LA-BR M3 switch signal for seat memory switch LH M3 switch on Below 1 V
        M3 switch off 11 to 14 V
        H31-25 (MM) - H31-26 (MSWE) L - LA-BR SET switch signal for seat memory switch LH SET switch on Below 1 V
        SET switch off 11 to 14 V
        H31-26 (MSWE) - Body ground LA-BR - Body ground Ground Always Below 1 Ω
        z38-1 (MV) - Body ground W - Body ground Vertical mirror motor drive voltage Driver door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
        z38-3 (MR) - Body ground G - 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
        z38-4 (HTR+) - z38-12 (HTR-) BR-W - B-R Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V → Below 1 V
        z38-5 (VC) - Body ground SB - Body ground Mirror position sensor power supply Power switch off → on (IG) Below 1 V → 4.75 to 5.25 V
        z38-6 (VSRL) - Body ground V - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z38-7 (EC+) - z38-15 (EC-) BR - B-L Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror off → on Below 1 V → 1.05 to 1.35 V
        z38-9 (MH) - Body ground R - Body ground Horizontal mirror motor drive voltage Driver door mirror surface moving left → stopped 11 to 14 V → Below 1 V
        z38-10 (M+) - Body ground B - Body ground Vertical and horizontal mirror motors drive voltage Driver door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
        Driver door mirror surface moving right → stopped 11 to 14 V → Below 1 V
        z38-11 (MF) - Body ground L - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (driver door) returning → stopped 11 to 14 V → Below 1 V
        z38-13 (HSRL) - Body ground LG - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z38-14 (E1) - Body ground GR - Body ground Ground Always Below 1 Ω
    2. B004YL6N21

      for RHD:


      1. Disconnect the H12 front multiplex network door ECU RH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H12-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        H12-3 (SIG) - Body ground B - Body ground Ignition power supply (IG signal) Power switch off → on (IG) Below 1 V → 11 to 14 V
        H12-4 (CPUB) - Body ground L - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        H12-6 (BDR) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V

      3. Reconnect the H12 front multiplex network door ECU RH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H12-9 (SGND) - Body ground R - Body ground Ground Always Below 1 Ω
        H12-11 (LIN1) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
        H12-12 (LIN2) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
        H12-22 (M1) - H12-26 (MSWE) BE - LA-BR M1 switch signal for seat memory switch RH M1 switch on Below 1 V
        M1 switch off 11 to 14 V
        H12-23 (M2) - H12-26 (MSWE) G - LA-BR M2 switch signal for seat memory switch RH M2 switch on Below 1 V
        M2 switch off 11 to 14 V
        H12-24 (M3) - H12-26 (MSWE) V - LA-BR M3 switch signal for seat memory switch RH M3 switch on Below 1 V
        M3 switch off 11 to 14 V
        H12-25 (MM) - H12-26 (MSWE) L - LA-BR SET switch signal for seat memory switch RH SET switch on Below 1 V
        SET switch off 11 to 14 V
        H12-26 (MSWE) - Body ground LA-BR - Body ground Ground Always Below 1 Ω
        z37-1 (MV) - Body ground W - Body ground Vertical mirror motor drive voltage Driver door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
        z37-3 (MR) - Body ground G - 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
        z37-4 (HTR+) - z37-12 (HTR-) BR-W - B-R Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V → Below 1 V
        z37-5 (VC) - Body ground SB - Body ground Mirror position sensor power supply Power switch off → on (IG) Below 1 V → 4.75 to 5.25 V
        z37-6 (VSSR) - Body ground V - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z37-7 (EC+) - z37-15 (EC-) BR - B-L Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror off → on Below 1 V → 1.05 to 1.35 V
        z37-9 (MH) - Body ground R - Body ground Horizontal mirror motor drive voltage Driver door mirror surface moving left → stopped 11 to 14 V → Below 1 V
        z37-10 (M+) - Body ground B - Body ground Vertical and horizontal mirror motors drive voltage Driver door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
        Driver door mirror surface moving right → stopped 11 to 14 V → Below 1 V
        z37-11 (MF) - Body ground L - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (driver door) returning → stopped 11 to 14 V → Below 1 V
        z37-13 (HSSR) - Body ground LG - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z37-14 (E1) - Body ground GR - Body ground Ground Always Below 1 Ω

  2. CHECK FRONT MULTIPLEX NETWORK DOOR ECU (FRONT PASSENGER DOOR)


    1. B004YL6N21

      for LHD:


      1. Disconnect the H12 front multiplex network door ECU RH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H12-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        H12-3 (SIG) - Body ground B - Body ground Ignition power supply (IG signal) Power switch off → on (IG) Below 1 V → 11 to 14 V
        H12-4 (CPUB) - Body ground L - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        H12-6 (BDR) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V

      3. Reconnect the H12 front multiplex network door ECU RH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H12-11 (LIN1) - Body ground B - Body ground LIN communication line Power switch on (IG) Pulse generation
        z37-1 (MV) - Body ground W - Body ground Vertical mirror motor drive voltage Front passenger door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
        z37-3 (MR) - Body ground G - 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
        z37-4 (HTR+) - z37-12 (HTR-) BR-W - B-R Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V → Below 1 V
        z37-5 (VC) - Body ground SB - Body ground Mirror position sensor power supply Power switch off → on (IG) Below 1 V → 4.75 to 5.25 V
        z37-6 (VSSR) - Body ground V - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z37-7 (EC+) - z37-15 (EC-) BR - B-L Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror off → on Below 1 V → 1.05 to 1.35 V
        z37-9 (MH) - Body ground R - Body ground Horizontal mirror motor drive voltage Front passenger door mirror surface moving left → stopped 11 to 14 V → Below 1 V
        z37-10 (M+) - Body ground B - Body ground Vertical and horizontal mirror motors drive voltage Front passenger door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
        Front passenger door mirror surface moving right → stopped 11 to 14 V → Below 1 V
        z37-11 (MF) - Body ground L - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (Front passenger door) returning → stopped 11 to 14 V → Below 1 V
        z37-13 (HSSR) - Body ground LG - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z37-14 (E1) - Body ground GR - Body ground Ground Always Below 1 Ω
    2. B004YL6N20

      for RHD:


      1. Disconnect the H31 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H31-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
        H31-3 (SIG) - Body ground B - Body ground Ignition power supply (IG signal) Power switch off → on (IG) Below 1 V → 11 to 14 V
        H31-4 (CPUB) - Body ground L - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
        H31-6 (BDR) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V

      3. Reconnect the H31 front multiplex network door ECU LH connector.

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

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        H31-11 (LIN1) - Body ground B - Body ground LIN communication line Power switch on (IG) Pulse generation
        z38-1 (MV) - Body ground W - Body ground Vertical mirror motor drive voltage Front passenger door mirror surface moving upward → stopped 11 to 14 V → Below 1 V
        z38-3 (MR) - Body ground G - 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
        z38-4 (HTR+) - z38-12 (HTR-) BR-W - B-R Mirror heater relay drive voltage Mirror heater switch (rear window defogger switch) on 11 to 14 V → Below 1 V
        z38-5 (VC) - Body ground SB - Body ground Mirror position sensor power supply Power switch off → on (IG) Below 1 V → 4.75 to 5.25 V
        z38-6 (VSRL) - Body ground V - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z38-7 (EC+) - z38-15 (EC-) BR - B-L Automatic glare-resistant EC mirror drive signal Automatic glare-resistant EC mirror off → on Below 1 V → 1.05 to 1.35 V
        z38-9 (MH) - Body ground R - Body ground Horizontal mirror motor drive voltage Front passenger door mirror surface moving left → stopped 11 to 14 V → Below 1 V
        z38-10 (M+) - Body ground B - Body ground Vertical and horizontal mirror motors drive voltage Front passenger door mirror surface moving downward → stopped 11 to 14 V → Below 1 V
        Front passenger door mirror surface moving right → stopped 11 to 14 V → Below 1 V
        z38-11 (MF) - Body ground L - Body ground Power retract mirror motor drive voltage Outer rear view mirror assembly (Front passenger door) returning → stopped 11 to 14 V → Below 1 V
        z38-13 (HSRL) - Body ground LG - Body ground Mirror position sensor signal Power switch on (IG) 0 to 5 V
        z38-14 (E1) - Body ground GR - Body ground Ground Always Below 1 Ω