LIGHTING SYSTEM TERMINALS OF ECU


  1. CHECK AFS ECU

    A01GWNEE01

    1. Disconnect the A37 AFS ECU 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
      A37-14 (IGS) - A37-22 (E1) GR - W-B Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 Ω
      A37-15 (IG) - A37-22 (E1) Y - W-B Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 Ω
      A37-22 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the A37 AFS ECU 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
      A37-1 (SMBL) - A37-22 (E1) L - W-B Headlight swivel motor LH power output Power switch on (IG) 11 to 14 V
      A37-2 (SMBR) - A37-22 (E1) L - W-B Headlight swivel motor RH power output Power switch on (IG) 11 to 14 V
      A37-6 (INL) - A37-22 (E1) P - W-B LO/HI beam circuit

      Power switch on (IG)

      Low beam headlight LH illuminated

      		 Pulse generation
      A37-7 (INR) - A37-22 (E1) V - W-B LO/HI beam circuit

      Power switch on (IG)

      Low beam headlight RH illuminated

      		 Pulse generation
      A37-8 (LCH) - A37-22 (E1)* B - W-B CAN communication Power switch on (IG) Pulse generation
      A37-9 (LCL) - A37-22 (E1)* W - W-B CAN communication Power switch on (IG) Pulse generation
      A37-10 (SMR) - A37-22 (E1) L - W-B Headlight swivel motor RH Power switch on (IG) Pulse generation
      A37-11 (RH+) - A37-22 (E1) P - W-B Headlight swivel motor RH (leveling portion) Power switch on (IG) Pulse generation
      A37-12 (CANH) - A37-22 (E1) B - W-B CAN communication Power switch on (IG) Pulse generation
      A37-13 (CANL) - A37-22 (E1) W - W-B CAN communication Power switch on (IG) Pulse generation
      A37-17 (SHFL) - A37-22 (E1) L - W-B Vehicle height signal Power switch on (IG) (no passengers, no luggage, vehicle not moving) Approximately 2.5 V
      A37-18 (SBR) - A37-22 (E1) BR - W-B Vehicle height signal Power switch on (IG) Approximately 5 V
      A37-19 (SHRL) - A37-22 (E1) LG - W-B Vehicle height signal Power switch on (IG) (no passengers, no luggage, vehicle not moving) Approximately 2.5 V
      A37-21 (SGR) - A37-22 (E1) GR - W-B Vehicle height signal Always Below 1 Ω
      A37-27 (LH-) - A37-22 (E1) BE - W-B Headlight swivel motor LH Always Below 1 Ω
      A37-28 (RH-) - A37-22 (E1) BE - W-B Headlight swivel motor RH Always Below 1 Ω
      A37-29 (SML) - A37-22 (E1) L - W-B Headlight swivel motor LH Power switch on (IG) Pulse generation
      A37-30 (LH+) - A37-22 (E1) W - W-B Headlight swivel motor LH (leveling portion) Power switch on (IG) Pulse generation

      • *: w/ Adaptive High Beam System

  2. CHECK MULTIPLEX NETWORK FRONT LIGHT ECU (FRONT CONTROLLER)

    A01H15EE03

    1. Disconnect the A50 and A52 multiplex network front light ECU connectors.

    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
      A52-1 (BATB) - A50-2 (E) P - W-B Battery power supply Always 11 to 14 V
      A52-5 (ALTB) - A50-2 (E) L - W-B Battery power supply Always 11 to 14 V
      A50-1 (FMB3) - A50-2 (E) LG - W-B Battery power supply Always 11 to 14 V
      A50-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A50-5 (FMIG) - A50-2 (E) Y - W-B Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the A50 and A52 multiplex network front light ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      B14-5 (HLHR) - A50-2 (E)*1 L - W-B High beam circuit Headlight dimmer switch HEAD, low position → High position Below 1 V → 11 to 14 V
      B14-6 (HLHL) - A50-2 (E)*1 G - W-B High beam circuit Headlight dimmer switch HEAD, Low → High position Below 1 V → 11 to 14 V
      B14-15 (CRAR) - A50-2 (E) Y - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      B14-23 (CRAL) - A50-2 (E) P - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      A50-3 (CANP) - A50-2 (E) B - W-B CAN communication Power switch on (IG) Pulse generation
      A50-4 (CANN) - A50-2 (E) W - W-B CAN communication Power switch on (IG) Pulse generation
      A50-6 (FFGO) - A50-2 (E) Y - W-B Front light circuit Headlight dimmer switch (Fr FOG) OFF → ON 11 to 14 V → Below 1 V
      A50-7 (HRLY) - A50-2 (E) BE - W-B Low beam circuit Headlight dimmer switch OFF → HEAD position 11 to 14 V → Below 1 V
      A50-8 (HEAD) - A50-2 (E) R - W-B Low beam circuit

      Power switch on (IG)

      Headlight dimmer switch OFF → HEAD position

      		 11 to 14 V → Below 1 V
      A52-16 (OUT1) - A50-2 (E)*2 L - W-B High beam circuit Headlight dimmer switch HEAD, low position → High position 11 to 14 V → Below 1 V

      • *1: w/o Pre-crash Safety System

      • *2: w/o Adaptive High Beam System

  3. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

    A01GZ5CE01

    1. Disconnect the DA, L11, L12 and L13 main body ECU connectors.

    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
      DA-40 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L12-1 (AM2) - L11-1 (GND3) W - W-B Battery power supply Always 11 to 14 V
      L13-6 (AM1) - L11-1 (GND3) W - W-B Battery power supply Always 11 to 14 V
      L13-3 (IG1D) - L11-1 (GND3) V - W-B Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L13-22 (ACCD) - L11-1 (GND3) G - W-B ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the DA, L11, L12 and L13 main body ECU connectors.

    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
      DA-33 (CIL-) - L11-1 (GND3) LG - W-B Clock illumination signal Clock illumination off → on 11 to 14 V → Below 1 V
      DA-55 (TRNL) - L11-1 (GND3) P - W-B LH side turn signal Headlight dimmer switch (TURN L) OFF → ON 9 V or higher → Below 1 V
      DA-56 (TRNR) - L11-1 (GND3) L - W-B RH side turn signal Headlight dimmer switch (TURN R) OFF → ON 9 V or higher → Below 1 V
      DD-12 (LCTY) - L11-1 (GND3) L - W-B Illumination signal Rear left door closed → opened 11 to 14 V → Below 1 V
      DF-1 (ALTB) - L11-1 (GND3) B - W-B Battery power supply Always 11 to 14 V
      L11-1 (GND3) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L11-9 (SPD) - L11-1 (GND3) V - W-B Vehicle speed signal While vehicle is driven at 30 km/h (18 mph) Pulse generation (see waveform 1)
      L11-7 (HZSW) - L11-1 (GND3) R - W-B Hazard signal Hazard warning signal switch OFF → ON Below 1 V → 11 to 14 V
      L11-6 (CANL) - L11-1 (GND3) G - W-B CAN communication Power switch on (IG) Pulse generation
      L11-5 (CANH) - L11-1 (GND3) R - W-B CAN communication Power switch on (IG) Pulse generation
      L11-16 (CANP) - L11-1 (GND3) B - W-B CAN communication Power switch on (IG) Pulse generation
      L11-15 (CANN) - L11-1 (GND3) W - W-B CAN communication Power switch on (IG) Pulse generation
      L11-14 (HAZ) - L11-1 (GND3) BE - W-B Hazard signal Hazard warning signal switch OFF → ON Below 1 V → 11 to 14 V
      L11-11 (FSPT) - L11-1 (GND3) V - W-B Illumination signal Front and rear interior foot lights off → illuminated 11 to 14 V → Below 1 V
      L11-12 (ADIM) - L11-1 (GND3) G - W-B Clock illumination signal Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      L12-8 (PANL) - L11-1 (GND3) GR - W-B Illumination signal Headlight dimmer switch OFF → TAIL position 11 to 14 V → Below 1 V
      L12-7 (RCTY) - L11-1 (GND3) R - W-B Illumination signal Rear right door closed → opened 11 to 14 V → Below 1 V
      L12-18 (CLTE) - Body ground W - Body ground Automatic light control sensor ground circuit Always Below 1 Ω
      L12-19 (CLTS) - L11-1 (GND3) V - W-B Automatic light control sensor ground circuit Power switch on (IG), headlight dimmer switch AUTO, automatic light control sensor covered by lightproof object → not covered by lightproof object Pulse generation (Waveform of "Below 1 V → Approximately 7 V → Below 1 V" is displayed; waveform varies depending on light)
      L12-20 (CLTB) - L11-1 (GND3) BE - W-B Automatic light control sensor power source circuit Power switch on (IG) 11 to 14 V
      L12-21 (PCTY) - L11-1 (GND3) L - W-B Illumination signal Front passenger door closed → opened 11 to 14 V → Below 1 V
      L12-14 (PIL1) - L11-1 (GND3) V - W-B Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 2)
      L12-15 (PIL2) - L11-1 (GND3) G - W-B Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 3)
      L12-26 (PIL3) - L11-1 (GND3) P - W-B Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 4)
      L12-4 (PIL4) - L11-1 (GND3) SB - W-B Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 5)
      L12-5 (PIL5) - L11-1 (GND3) GR - W-B Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Below 1 V → 11 to 14 V
      L13-24 (DCTY) - L11-1 (GND3) W - W-B Illumination signal Driver door open → closed 11 to 14 V → Below 1 V
      L13-25 (SWIL) - L11-1 (GND3) R - W-B Illumination signal

      • Illuminated entry control lights off → illuminated

      • Headlight dimmer switch OFF → TAIL position

      		 Below 1 V → 11 to 14 V
    5. A01GX4KE01

      Using an oscilloscope, check the signal waveform of the ECU.

      Waveform 1
      Item Content
      Terminal No. (Symbol) L11-9 (SPD) - L11-1 (GND3)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition While vehicle is driven at 30 km/h (18 mph)

    6. Using an oscilloscope, check the signal waveform of the ECU.

      A01GXVGE02
      Waveform 2
      Item Content
      Terminal No. (Symbol) L12-14 (PIL1) - L11-1 (GND3)
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])
      Waveform 3
      Item Content
      Terminal No. (Symbol) L12-15 (PIL2) - L11-1 (GND3)
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])
      Waveform 4
      Item Content
      Terminal No. (Symbol) L12-26 (PIL3) - L11-1 (GND3)
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])
      Waveform 5
      Item Content
      Terminal No. (Symbol) L12-4 (PIL4) - L11-1 (GND3)
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])

  4. CHECK LUGGAGE ROOM JUNCTION BLOCK ASSEMBLY (REAR JUNCTION BLOCK ECU)

    A01GZ5CE02

    1. Disconnect the LA, LH and LD luggage room junction block assembly connectors.

    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
      LH-1 - Body ground B - Body ground Battery power supply Always 11 to 14 V
      LD-4 - Body ground R - Body ground Battery power supply Always 11 to 14 V
      LA-29 (SG) - Body ground W-B - Body ground Ground Always Below 1 Ω
      LA-43 (PGND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the LA, LH and LD luggage room junction block assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S64-3 (TIL2) - LA-43 (PGND) BR - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      S64-7 (TIL1) - LA-43 (PGND) BR - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      S64-9 (STP2) - LA-43 (PGND) L - W-B Stop light switch signal Brake pedal not depressed → depressed Below 1 V → 11 to 14 V
      S64-10 (STP1) - LA-43 (PGND) L - W-B Stop light switch signal Brake pedal not depressed → depressed Below 1 V → 11 to 14 V
      S63-1 (BCK1) - LA-43 (PGND) R - W-B Back-up light signal Shift lever not on R → on R Below 1 V → 11 to 14 V
      S63-4 (STP3) - LA-43 (PGND) R - W-B Stop light switch signal Brake pedal not depressed → depressed Below 1 V → 11 to 14 V
      S63-11 (LGLP) - LA-43 (PGND) B - W-B Illumination signal Luggage compartment door closed → opened Below 1 V → 11 to 14 V
      S63-13 (TIL4) - LA-43 (PGND) R - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      S63-14 (TIL3) - LA-43 (PGND) BR - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      S63-15 (LCE2) - LA-43 (PGND) V - W-B Taillight circuit Headlight dimmer switch OFF → TAIL position Below 1 V → 11 to 14 V
      S62-6 (STP4) - LA-43 (PGND) B - W-B Stop light switch signal Brake pedal not depressed → depressed Below 1 V → 11 to 14 V
      S62-8 (LGCY) - LA-43 (PGND) GR - W-B Illumination signal Luggage compartment door closed → opened Below 1 V → 11 to 14 V
      S62-9 (LIN) - LA-43 (PGND) L - W-B LIN communication Power switch on (IG) Pulse generation
      S62-13 (PBIL) - LA-43 (PGND)

      R - W-B*1

      P - W-B*2

      		 Illumination signal Front seat inner belt illumination off → illuminated Below 1 V → 11 to 14 V
      S62-16 (STOP) - LA-43 (PGND) G - W-B Stop light switch signal Brake pedal not depressed → depressed Below 1 V → 11 to 14 V
      S62-24 (RBI2) - LA-43 (PGND)*3

      R - W-B*4

      LG - W-B*5

      		 Illumination signal Rear seat inner belt illumination off → illuminated Below 1 V → 11 to 14 V
      S62-20 (CANP) - LA-43 (PGND) B - W-B CAN communication Power switch on (IG) Pulse generation
      S62-28 (CANN) - LA-43 (PGND) W - W-B CAN communication Power switch on (IG) Pulse generation
      S61-21 (DBIL) - LA-43 (PGND)

      P - W-B*1

      R - W-B*2

      		 Illumination signal Front seat inner belt illumination off → illuminated Below 1 V → 11 to 14 V
      S61-20 (RBIL) - LA-43 (PGND)*3 B - W-B Illumination signal Rear seat inner belt illumination off → illuminated Below 1 V → 11 to 14 V

      • *1: for LHD

      • *2: for RHD

      • *3: w/ Rear Seat Inner Belt illumination

      • *4: w/ Rear Power Seat Control System

      • *5: w/o Rear Power Seat Control System

  5. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH

    A01GYOWE07

    1. Disconnect the N1 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
      N1-3 (SIG) - Body ground

      V - Body ground*1

      L - Body ground*2

      		 Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      N1-6 (BDR) - Body ground BE - Body ground Battery power supply Always 11 to 14 V
      N1-11 (CPUB) - Body ground

      R - Body ground*1

      B - Body ground*2

      		 Battery power supply Always 11 to 14 V
      N1-16 (BDG1) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      N1-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • *1: for LHD

      • *2: for RHD


      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the N1 front multiplex network door ECU RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P4-6 (CTYB) - P4-7 (CYL) LG - L Illumination signal Front RH door closed → opened Below 1 V → 11 to 14 V
      P4-10 (LED+) - P4-22 (LED-) B - R Illumination signal Inside handle illumination off → illuminated (based on inside handle illumination control) Below 1 V → 11 to 14 V
      N1-9 (CANP) - N1-1 (GND) R - W-B CAN communication Power switch on (IG) Pulse generation
      N1-10 (CANN) - N1-1 (GND) W - W-B CAN communication Power switch on (IG) Pulse generation
      z9-2 (LP) - z9-12 (HTR-) LG - W Illumination signal Door mirror foot light RH off → illuminated (based on door mirror foot light control) Below 1 V → 11 to 14 V

  6. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH

    A01GYOWE08

    1. Disconnect the N10 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
      N10-3 (SIG) - Body ground

      L - Body ground*1

      V - Body ground*2

      		 Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      N10-6 (BDR) - Body ground BE - Body ground Battery power supply Always 11 to 14 V
      N10-11 (CPUB) - Body ground

      B - Body ground*1

      R - Body ground*2

      		 Battery power supply Always 11 to 14 V
      N10-16 (BDG1) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      N10-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • *1: for LHD

      • *2: for RHD


      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the N10 front multiplex network door ECU LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P10-6 (CTYB) - P10-7 (CYL) LG - L Illumination signal Front LH door closed → opened Below 1 V → 11 to 14 V
      P10-10 (LED+) - P10-22 (LED-) B - R Illumination signal Inside handle illumination off → illuminated (based on inside handle illumination control) Below 1 V → 11 to 14 V
      N10-9 (CANP) - N10-1 (GND) R - W-B CAN communication Power switch on (IG) Pulse generation
      N10-10 (CANN) - N10-1 (GND) W - W-B CAN communication Power switch on (IG) Pulse generation
      z10-2 (LP) - z10-12 (HTR-) LG - W Illumination signal Door mirror foot light LH off → illuminated (based on door mirror foot light control) Below 1 V → 11 to 14 V

  7. CHECK REAR MULTIPLEX NETWORK DOOR ECU RH

    A01H1UYE01

    1. Disconnect the O3 rear 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
      O3-3 (SIG) - Body ground GR - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      O3-6 (BDR) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      O3-11 (CPUB) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      O3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the O3 rear multiplex network door ECU RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O2-6 (CTYB) - O2-7 (CYL) LG - L Illumination signal Rear right door closed → opened Below 1 V → 11 to 14 V
      O2-11 (LED+) - O2-12 (LED-) B - R Illumination signal Inside handle illumination off → illuminated (based on inside handle illumination control) Below 1 V → 11 to 14 V
      O2-16 (ASH+) - O2-15 (ASH-) P - GR Illumination signal Rear ashtray light RH off → illuminated Below 1 V → 11 to 14 V
      O3-9 (CANP) - O3-1 (GND) R - W-B CAN communication Power switch on (IG) Pulse generation
      O3-10 (CANN) - O3-1 (GND) W - W-B CAN communication Power switch on (IG) Pulse generation

  8. CHECK REAR MULTIPLEX NETWORK DOOR ECU LH

    A01H1UYE02

    1. Disconnect the O14 rear 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
      O14-3 (SIG) - Body ground Y - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      O14-6 (BDR) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      O14-11 (CPUB) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      O14-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the O14 rear multiplex network door ECU LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O15-6 (CTYB) - O15-7 (CYL) LG - L Illumination signal Rear left door closed → opened Below 1 V → 11 to 14 V
      O15-11 (LED+) - O15-12 (LED-) B - R Illumination signal Inside handle illumination off → illuminated (based on inside handle illumination control) Below 1 V → 11 to 14 V
      O15-16 (ASH+) - O15-15 (ASH-) P - GR Illumination signal Rear ashtray light LH off → illuminated Below 1 V → 11 to 14 V
      O14-9 (CANP) - O14-1 (GND) R - W-B CAN communication Power switch on (IG) Pulse generation
      O14-10 (CANN) - O14-1 (GND) W - W-B CAN communication Power switch on (IG) Pulse generation

  9. CHECK WINDSHIELD WIPER SWITCH

    A01GXAXE01

    1. Disconnect the L25 windshield wiper switch 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
      L25-1 (B) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      L25-2 (IG) - Body ground G - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L25-8 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the L25 windshield wiper switch connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L25-5 (CANP) - L25-8 (E) P - W-B CAN communication Power switch on (IG) Pulse generation
      L25-6 (CANN) - L25-8 (E) V - W-B CAN communication Power switch on (IG) Pulse generation
      L25-7 (HEAD) - L25-8 (E) R - W-B Low beam circuit Headlight dimmer switch OFF → HEAD position Below 1 V → 11 to 14 V

  10. CHECK MAP LIGHT ASSEMBLY

    A01GZ66E01

    1. Disconnect the X4 and X6 map light assembly connectors.

    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
      X4-6 (+B) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      X4-27 (DOME) - Body ground GR - Body ground Battery power supply Always 11 to 14 V
      X4-9 (IG) - Body ground L - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      X4-16 (GND9) - Body ground W-B - Body ground Ground Always Below 1 Ω
      X6-20 (GND4) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the X4 and X6 map light assembly connectors.

    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
      X4-3 (RLSW) - X4-16 (GND9) V - W-B RR spot light circuit RR spot light switch OFF → ON Below 1 V → 11 to 14 V
      X4-4 (RRSW) - X4-16 (GND9) P - W-B RL spot light circuit RL spot light switch OFF → ON Below 1 V → 11 to 14 V
      X4-10 (+B1) - X4-16 (GND9) L - W-B Battery power supply Always 11 to 14 V
      X4-11 (ILLB) - X4-16 (GND9) R - W-B Battery power supply Always 11 to 14 V
      X4-12 (RLVS) - X4-16 (GND9) V - W-B RL vanity light circuit RL vanity light switch OFF → ON Below 1 V → 11 to 14 V
      X4-13 (RRVS) - X4-16 (GND9) V - W-B RR vanity light circuit RR vanity light switch OFF → ON Below 1 V → 11 to 14 V
      X4-15 (GND6) - X4-16 (GND9) G - W-B Ground Always Below 1 Ω
      X4-26 (+B2) - X4-16 (GND9) L - W-B Battery power supply Always 11 to 14 V
      X4-28 (FVT) - X4-16 (GND9) W - W-B Vanity light circuit Visor assembly (vanity light switch ON) (battery saver not operating) → visor assembly (vanity light switch ON) (battery saver operating) Below 1 V → 11 to 14 V
      X6-2 (LIN) - X4-16 (GND9) L - W-B LIN communication Power switch on (IG) Pulse generation
      X6-7 (RLMP) - X4-16 (GND9) W - W-B RL spot light circuit Always 11 to 14 V
      X6-8 (RRMP) - X4-16 (GND9) B - W-B RR spot light circuit Always 11 to 14 V
      X6-11 (ILL+) - X4-16 (GND9) G - W-B ACC power supply Power switch on (ACC) 11 to 14 V
      X6-13 (ILL-) - X4-16 (GND9) LG - W-B Illumination signal

      • Power switch on (ACC)

      • Headlight dimmer switch OFF → TAIL position

      		 11 to 14 V → Below 1 V
      X6-14 (RRVT) - X4-16 (GND9) B - W-B RR vanity light circuit RR vanity light switch OFF → ON 11 to 14 V → Below 1 V
      X6-15 (RIL-) - X4-16 (GND9) BR - W-B Room light switch illumination circuit Room light switch illumination off → illuminated 11 to 14 V → Below 1 V
      X6-16 (RLVT) - X4-16 (GND9) B - W-B RL vanity light circuit RL vanity light switch OFF → ON 11 to 14 V → Below 1 V
      X6-18 (RILL) - X4-16 (GND9) L - W-B Rear dome light circuit Rear dome light off → illuminated (based on rear door light control) 11 to 14 V → Below 1 V

  11. CHECK INNER REAR VIEW MIRROR ASSEMBLY (AUTOMATIC HIGH BEAM SENSOR) (w/ Automatic High Beam System)

    A01GXM3E05

    1. Disconnect the X21 inner rear view mirror assembly 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
      X21-2 (IG) - Body ground G - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      X21-10 (E) - Body ground B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the X21 inner rear view mirror assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      X21-5 (LIN) - X21-10 (E) BE - B LIN communication Automatic high beam system operates Pulse generation

  12. CHECK INNER REAR VIEW MIRROR ASSEMBLY (ADAPTIVE HIGH BEAM SYSTEM SENSOR) (w/ Adaptive High Beam System)

    A01GXM3E05

    1. Disconnect the X21 inner rear view mirror assembly 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
      X21-2 (IG) - Body ground G - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      X21-10 (E) - Body ground B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the X21 inner rear view mirror assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      X21-8 (CANH) - X21-10 (E) B - B CAN communication Adaptive high beam system operates Pulse generation
      X21-9 (CANL) - X21-10 (E) W - B CAN communication Adaptive high beam system operates Pulse generation

  13. CHECK NO. 1 INSTRUMENT PANEL GARNISH SUB-ASSEMBLY (PASSENGER SIDE INSTRUMENT PANEL ILLUMINATION)

    A01H0ULE10

    1. Disconnect the L171 No. 1 instrument panel garnish 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
      L171-11 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L171-14 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L171-16 (ECUB) - Body ground R - Body ground Battery power supply Always 11 to 14 V

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the L171 No. 1 instrument panel garnish connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L171-4 (LED+) - Body ground Y - Body ground Driver side instrument panel illumination circuit Power switch on (ACC) 7.5 to 8.5 V
      L171-12 (DO3) - Body ground LG - Body ground Driver side instrument panel illumination circuit Driver side instrument panel illumination illuminated Pulse generation
      L171-13 (DO2) - Body ground GR - Body ground Driver side instrument panel illumination circuit Driver side instrument panel illumination illuminated Pulse generation
      L171-5 (DOUT) - Body ground L - Body ground Driver side instrument panel illumination circuit Driver side instrument panel illumination illuminated Pulse generation
      L171-2 (INP1) - Body ground V - Body ground Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 1)
      L171-1 (INP2) - Body ground G - Body ground Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 2)
      L171-9 (INP3) - Body ground P - Body ground Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 3)
      L171-10 (INP4) - Body ground SB - Body ground Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) Pulse generation (see waveform 4)
      L171-7 (OUT1) - Body ground GR - Body ground Instrument panel illumination signal Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) → Illuminate Below 1 V → 11 to 14 V

    5. Using an oscilloscope, check the signal waveform of the ECU.

      A01GXVGE01
      Waveform 1
      Item Content
      Terminal No. (Symbol) L171-2 (INP1) - Body ground
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])
      Waveform 2
      Item Content
      Terminal No. (Symbol) L171-1 (INP2) - Body ground
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])
      Waveform 3
      Item Content
      Terminal No. (Symbol) L171-9 (INP3) - Body ground
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])
      Waveform 4
      Item Content
      Terminal No. (Symbol) L171-10 (INP4) - Body ground
      Tool Setting 2 V/DIV., 5 ms/DIV.
      Condition Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door])