ENTRY AND START SYSTEM TERMINALS OF ECU


  1. CHECK CERTIFICATION ECU

    A01GXG8E37

    1. Disconnect the L15 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-1 (+B1 ) - L15-17 (E) L - W-B +B power supply Always 11 to 14 V
      L15-18 (IG) - L15-17 (E) L - W-B Ignition power supply Power switch OFF Below 1 V
      Power switch ON (IG) 11 to 14 V
      L15-20 (CUTB) - L15-17 (E) R - W-B +B power supply Always 11 to 14 V
      L15-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, the wire harness side may have a malfunction.

    3. Reconnect the L15 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-33 (CLG1) - L15-34 (CG1B)

      P - V*1

      LG - L*2

      		 Door electrical key oscillator sensor signal All doors closed, all doors locked and power switch OFF Alternating between 5 V and below 1 V
      Door unlocked or door open Below 1 V
      L15-35 (CLG2) - L15-36 (CG2B)

      LG - L*1

      P - V*2

      		 Door electrical key oscillator sensor signal All doors closed, all doors locked and power switch OFF Alternating between 5 V and below 1 V
      Door unlocked or door open Below 1 V
      L16-8 (CLG3) -L16-9 (CG3B)

      R - G*1

      LG - L*2

      		 Door electrical key oscillator sensor signal All doors closed, all doors locked and power switch OFF Alternating between 5 V and below 1 V
      Door unlocked or door open Below 1 V
      L16-10 (CLG4) - L16-11 (CG4B)

      LG - L*1

      R - G*2

      		 Door electrical key oscillator sensor signal All doors closed, all doors locked and power switch OFF Alternating between 5 V and below 1 V
      Door unlocked or door open Below 1 V
      L15-11 (CLG5) - L15-12 (CG5B) L - Y Indoor electrical key oscillator (for front floor) sensor signal 30 seconds after driver side door opened and closed, power switch OFF Alternating between 5 V and below 1 V
      Within 30 seconds after driver side door opened and closed, power switch OFF Below 1 V
      L15-13 (CLG6) - L15-14 (CG6B) B - Y Indoor electrical key oscillator (for rear floor) sensor signal 30 seconds after driver side door opened and closed, power switch OFF Alternating between 5 V and below 1 V
      Within 30 seconds after driver side door opened and closed, power switch OFF Below 1 V
      L15-15 (CLG7) - L15-16 (CG7B) W - B Indoor electrical key oscillator (for luggage compartment) sensor signal Luggage electrical key switch off Alternating between 5 V and below 1 V
      Luggage electrical key switch on Below 1 V
      L15-31 (CLG8) - L15-32 (CG8B) V - P Electrical key antenna sensor signal Luggage electrical key switch off Alternating between 5 V and below 1 V
      Luggage electrical key switch on Below 1 V
      L15-29 (RCO) - L15-17 (E) G - W-B Door control receiver power source Power switch OFF, all doors closed, and transmitter switch pressed 4.6 to 5.4 V
      Power switch OFF, all doors closed, and transmitter switch not pressed Below 1 V
      L-15-37 (ASEL) - L15-17 (E) L - W-B Door control receiver select signal Power switch OFF, all doors closed, and luggage compartment door closed Below 1 V
      Power switch OFF, all doors closed, and luggage compartment door open 4.6 to 5.4 V
      L15-38 (RDA) - L15-17 (E) R - W-B Door control receiver data input signal Power switch OFF, all doors closed, and transmitter switch not pressed Below 2 V
      Power switch OFF, all doors closed, and transmitter switch pressed 11 to 14 V
      L-15-39 (RSSI) - L15-17 (E) W - W-B Door control receiver electric wave existence signal Power switch OFF, all doors closed, and transmitter switch not pressed 11 to 14 V
      Power switch OFF, all doors closed, and transmitter switch pressed Below 2 V

      Tech Tips


      • *1: for LHD

      • *2: for RHD

  2. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

    A01GZ5CE01

    1. Disconnect the DA, DD, DF, L11, L12, L13 and A68 ECU connectors.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L11-1 (GND3) - DA-41 (GND1) W-B - W-B Ground Always Below 1 Ω
      DA-40 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DA-40 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DF-1 (ALTB) - Body ground B - Body ground IG power supply Always 11 to 14 V
      L12-1 (AM2) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      L13-6 (AM1) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      L13-24 (DCTY) - Body ground W - Body ground Driver side door courtesy light switch input Driver side door is open Below 1 Ω
      Driver side door is closed 10 kΩ or higher
      L12-21 (PCTY) - Body ground L - Body ground Passenger side door courtesy light switch input Passenger side door is open Below 1 Ω
      Passenger side door is closed 10 kΩ or higher
      L12-7 (RCTY) - Body ground R - Body ground Rear RH side door courtesy light switch input Rear RH side door is open Below 1 Ω
      Rear RH side door is closed 10 kΩ or higher
      DD-12 (LCTY) - Body ground L - Body ground Rear LH side door courtesy light switch input Rear LH side door is open Below 1 Ω
      Rear LH side door is closed 10 kΩ or higher

  3. CHECK FRONT DOOR ECU LH

    A01GYOWE56

    1. Disconnect the N10 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N10-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N10-6 (BDR) - N10-1 (GND) BE - W-B Battery power supply Always 11 to 14 V
      N10-11 (CPUB) - N10-1 (GND)

      B - W-B*1

      R - W-B*2

      		 Battery power supply Always 11 to 14 V

      Tech Tips

      *1: for LHD

      *2: for RHD

      If the result is not as specified, the wire harness side may have a malfunction.

    3. Reconnect the N10 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N10-12 (OSCB) - N10-19 (OSCE) B - V Power source supply Always 11 to 14 V
      N10-14 (SENS) - N10-1 (GND) Y - W-B Touch sensor detection signal Outside door handle touched 11 to 14 V
      Outside door handle not touched Below 1 V
      N10-15 (SEL) - N10-1 (GND) BE - W-B Touch sensor activation control signal Key at least 3 m (9.84 ft.) away from door 11 to 14 V
      Key close to door Below 1 V
      N10-20 (TRG+) - N10-1 (GND) L - W-B Lock switch signal Power switch OFF, all doors closed and lock switch not pushed Pulse generation (see waveform 1 or 2)
      Lock switch pushed Below 1 V
    5. A01GWI9E01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) N10-20 (TRG+) - N10-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed
    6. A01GXHBE01

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) N10-20 (TRG+) - N10-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed

  4. CHECK FRONT DOOR ECU RH

    A01GYOWE21

    1. Disconnect the N1 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N1-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N1-6 (BDR) - N1-1 (GND) BE - W-B Battery power supply Always 11 to 14 V
      N1-11 (CPUB) - N1-1 (GND)

      R - W-B*1

      B - W-B*2

      		 Battery power supply Always 11 to 14 V

      Tech Tips

      *1: for LHD

      *2: for RHD

      If the result is not as specified, the wire harness side may have a malfunction.

    3. Reconnect the N1 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N1-12 (OSCB) - N1-19 (OSCE) B - V Power source supply Always 11 to 14 V
      N1-14 (SENS) - N1-1 (GND) Y - W-B Touch sensor detection signal Outside door handle touched 11 to 14 V
      Outside door handle not touched Below 1 V
      N1-15 (SEL) - N1-1 (GND) BE - W-B Touch sensor activation control signal Key at least 3 m (9.84 ft.) away from door 11 to 14 V
      Key close to door Below 1 V
      N1-20 (TRG+) - N1-1 (GND) L - W-B Lock switch signal Power switch OFF, all doors closed and lock switch not pushed Pulse generation (see waveform 1 or 2)
      Lock switch pushed Below 1 V
    5. A01GWI9E01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) N1-20 (TRG+) - N1-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed
    6. A01GXHBE01

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) N1-20 (TRG+) - N1-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed

  5. CHECK REAR DOOR ECU LH

    A01H0O0E10

    1. Disconnect the O14 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      O14-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      O14-6 (BDR) - O14-1 (GND) L - W-B Battery power supply Always 11 to 14 V
      O14-11 (CPUB) - O14-1 (GND) R - W-B Battery power supply Always 11 to 14 V

      If the result is not as specified, the wire harness side may have a malfunction.

    3. Reconnect the O14 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      O14-12 (OSCB) - O14-15 (OSCE) B - V Power source supply Always 11 to 14 V
      O14-14 (SENS) - O14-1 (GND) Y - W-B Touch sensor detection signal Outside door handle touched 11 to 14 V
      Outside door handle not touched Below 1 V
      O14-16 (SEL) - O14-1 (GND) BE - W-B Touch sensor activation control signal Key at least 3 m (9.84 ft.) away from door 11 to 14 V
      Key close to door Below 1 V
      O14-20 (TRG+) - O14-1 (GND) L - W-B Lock switch signal Power switch OFF, all doors closed and lock switch not pushed Pulse generation (see waveform 1 or 2)
      Lock switch pushed Below 1 V
    5. A01GWI9E01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) O14-20 (TRG+) - O14-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed
    6. A01GXHBE01

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) O14-20 (TRG+) - O14-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed

  6. CHECK REAR DOOR ECU RH

    A01H0O0E11

    1. Disconnect the O3 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      O3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      O3-6 (BDR) - O3-1 (GND) L - W-B Battery power supply Always 11 to 14 V
      O3-11 (CPUB) - O3-1 (GND) R - W-B Battery power supply Always 11 to 14 V

      If the result is not as specified, the wire harness side may have a malfunction.

    3. Reconnect the O3 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      O3-12 (OSCB) - O3-15 (OSCE) B - V Power source supply Always 11 to 14 V
      O3-14 (SENS) - O3-1 (GND) Y - W-B Touch sensor detection signal Outside door handle touched 11 to 14 V
      Outside door handle not touched Below 1 V
      O3-16 (SEL) - O3-1 (GND) BE - W-B Touch sensor activation control signal Key at least 3 m (9.84 ft.) away from door 11 to 14 V
      Key close to door Below 1 V
      O3-20 (TRG+) - O3-1 (GND) L - W-B Lock switch signal Power switch OFF, all doors closed and lock switch not pushed Pulse generation (see waveform 1 or 2)
      Lock switch pushed Below 1 V
    5. A01GWI9E01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) O3-20 (TRG+) - O3-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed
    6. A01GXHBE01

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) O3-20 (TRG+) - O3-1 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch OFF, all doors closed and lock switch not pushed

  7. CHECK POWER TRUNK LID CONTROL ECU

    A01H2AME01

    1. Disconnect the S43 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S43-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      S43-10 (ECUB) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      S43-12 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V

      If the result is not as specified, the wire harness side may have a malfunction.

    3. Reconnect the S43 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S43-19 (LPSW) - S43-11 (GND) BR - W-B Luggage electrical key switch signal Power switch ON (IG) and luggage electrical key switch pushed Below 1 V
      Power switch ON (IG), luggage compartment door closed and luggage electrical key switch not pushed Pulse generation (see waveform 1)
      S43-22 (LCTY) - S43-11 (GND) G - W-B Luggage compartment door courtesy light switch signal Power switch ON (IG) and luggage compartment door is open Below 1 V
      Power switch ON (IG) and luggage compartment door is closed Pulse generation (see waveform 2)
    5. A01GW9NE01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) S43-19 (LPSW) - S43-11 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch ON (IG), luggage compartment door closed and luggage electrical key switch not pushed
    6. A01GWKTE01

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) S43-22 (LCTY) - S43-11 (GND)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Power switch ON (IG) and luggage compartment door is closed