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Terminals Of Ecu

  1. CHECK AFS ECU 
    Fig 1: Identifying Terminals Of ECU
    G04944614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A37 ECU connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      AFS ECU (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A37-14 (IGS) - A37-22 (E1) Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      A37-15 (IG) - A37-22 (E1) G - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      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 ECU connector.
    4. Measure the voltage and resistance according to the value(s) in the table below.
      AFS ECU (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A37-1 (SMBL) - A37-22 (E1) L - W-B Swivel actuator LH power output Engine switch on (IG) 11 to 14 V
      A37-2 (SMBR) - A37-22 (E1) L - W-B Swivel actuator RH power output Engine switch on (IG) 11 to 14 V
      A37-3(LHT)-A37-22(E1) L - W-B Headlight leveling motor LH power output Engine switch on (IG) 11 to 14 V
      A37-4 (RHT) - A37-22 (E1) L - W-B Headlight leveling motor RH power output Engine switch on (IG) 11 to 14 V
      A37-10 (SMR) - A37-22 (E1) L - W-B Swivel actuator RH Engine switch on (IG) Pulse generation
      A37-11 (RH+) - A37-22 (E1) W - W-B Headlight leveling motor RH Engine switch on (IG) Pulse generation
      A37-12 (CANH) - A37-22 (E1) R - W-B CAN communication Engine switch on (IG) Pulse generation
      A37-13 (CANL) - A37-22 (E1) G - W-B CAN communication Engine switch on (IG) Pulse generation
      A37-17 (SHFL) - A37-22 (E1) L - W-B Vehicle height signal Engine switch on (IG) (no passengers, no luggage, vehicle not moving) 2.5 V
      A37-18 (SBR) - A37-22 (E1) BR - W-B Vehicle height signal Engine switch on (IG) 5V
      A37-19(SHRI) - A37-22 (E1) LG - W-B Vehicle height signal Engine switch on (IG) (no passengers, no luggage, vehicle not moving) 2.5 V
      A37-21 (SGR) - A37-22 (E1) GR - W-B Vehicle height signal Always Below 1 Ω
      A37-23 (SMGL) - A37-22 (E1) O - W-B Swivel actuator LH Always Below 1 Ω
      A37-24 (SMGR) - A37-22 (E1) O - W-B Swivel actuator RH Always Below 1 Ω
      A37-27 (LH-) - A37-22 (E1) O - W-B Headlight leveling motor LH Always Below 1 Ω
      A37-28 (RH-) - A37-22 (E1) O - W-B Headlight leveling motor RH Always Below 1 Ω
      A37-29 (SML) - A37-22 (E1) L - W-B Swivel actuator LH Engine switch on (IG) Pulse generation
      A37-30 (LH+) - A37-22 (E1) W - W-B Headlight leveling motor LH Engine switch on (IG) Pulse generation

      If the result is not as specified, the ECU may have a malfunction.

  2. CHECK MULTIPLEX NETWORK FRONT LIGHT ECU (FRONT CONTROLLER) 
    Fig 2: Identifying Multiplex Network Front Light ECU (Front Controller) Connector
    G04951346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A50 and A52 ECU connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      MULTIPLEX NETWORK FRONT LIGHT ECU (FRONT CONTROLLER) (DISCONNECT)

      Terminal No. (Symbols) 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 Engine switch on (IG) 11 to 14 V

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

    3. Reconnect the A50 and A52 ECU connectors.
    4. Measure the voltage according to the value(s) in the table below.
      MULTIPLEX NETWORK FRONT LIGHT ECU (FRONT CONTROLLER) (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      B14-5 (HLHR) - A50-2( E) L - W-B Hi-beam circuit Headlight dimmer switch HEAD, LO --> HI Below 1 V --> 11 to 14 V
      B14-6 (HLHL) - A50-2 (E) G - W-B Hi-beam circuit Headlight dimmer switch HEAD, LO --> HI Below 1 V --> 11 to 14 V
      B14-15 (CRAR) - A50-2 (E) Y - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14 V
      B14-23 (CRAL) - A50-2 (E) P - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14 V
      A50-3 (CANP) - A50-2 (E) B - W-B CAN communication Engine switch on (IG) Pulse generation
      A50-4 (CANN) - A50-2 (E) W - W-B CAN communication Engine switch on (IG) Pulse generation
      A50-6 (FFOG) - A50-2 (E) Y - W-B Fog light circuit Headlight dimmer switch (Fr FOG) OFF --> ON 11 to 14 V --> Below 1 V
      A50-7 (HRLY) - A50-2 (E) O - W-B Lo-beam circuit Headlight dimmer switch OFF --> HEAD 11 to 14 V --> Below 1 V
      A50-8 (HEAD) - A50-2 (E) R - W-B Lo-beam circuit Engine switch on (IG) Headlight dimmer switch OFF --> HEAD 11 to 14 V --> Below 1 V

      If the result is not as specified, the ECU may have a malfunction.

  3. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) 
    Fig 3: Identifying Main Body ECU (Driver Side Junction Block) Connector
    G04943821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA, L11, L12 and L13 ECU connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      DA-40 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L11-1 (GND3) - 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
      L12-20 (CLTB) - L11-1 (GND3) O - W-B Automatic light control sensor power source circuit Engine switch on (IG) 11 to 14 V
      L12-19 (CLTS) - L11-1 (GND3) V-W-B Automatic light control sensor ground circuit Engine 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)
      L12-18 (CLTE) - Body ground W - Body ground Automatic light control sensor ground circuit Always Below 1 Ω
      L12-21 (PCTY)-L11-1 (GND3) L - W-B Illumination signal Front passenger door closed --> opened 11 to 14 V --> Below 1 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 Engine switch on (IG) 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
      L13-22 (ACCD) - L11-1 (GND3) G - W-B ACC power supply Engine switch on (ACC) 11 to 14 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 ECU connectors.
    4. Measure the voltage according to the value(s) in the table below.
      MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      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
      L11-9 (SPD) - L11-1 (GND3) V - W-B Vehicle speed signal While vehicle is driven at 30km/h (18mph) Pulse generation (see WAVEFORM )
      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 Engine switch on (IG) Pulse generation
      L11-5 (CANH) - L11-1 (GND3) R - W-B CAN communication Engine switch on (IG) Pulse generation
      L11-16 (CANP) - L11-1 (GND3) B - W-B CAN communication Engine switch on (IG) Pulse generation
      L11-15 (CANN) - L11-1 (GND3) W - W-B CAN communication Engine switch on (IG) Pulse generation
      L11-14 (HAZ) - L11-1 (GND3) O - 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 interior foot light off --> illuminated Illuminated
      L12-8 (PANL) - L11-1 (GND3) GR - W-B Illumination signal Headlight dimmer switch OFF --> TAIL 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
      L13-25 (SWIL) - L11-1 (GND3) R - W-B Illumination signal
      • Illuminated entry control lights off --> illuminated
      • Headlight dimmer switch OFF --> TAIL
      		 Below 1 V --> 11 to 14 V

      If the result is not as specified, the ECU may have a malfunction.

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

      Waveform 

      WAVEFORM OF ECU REFERENCE

      Item Content
      Terminal No. (Symbols) 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)
      Fig 4: Identifying Signal Waveform
      G04944617Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. CHECK LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU) 
    Fig 5: Identifying Luggage Room Junction Block (Rear Junction Block ECU) Connector
    G04950358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the LA junction block connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU) (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      LA-29 (SG) - Body ground W-B - Body ground Ground Always Below 1 Ω
      LA-43 (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 LA junction block connector.
    4. Measure the voltage according to the value(s) in the table below.
      LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU) (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S64-3 (TIL2) - LA-43 (E) BR - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14 V
      S64-7 (TIL1) - LA-43 (E) BR - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14V
      S64-9 (STP2) - LA-43 (E) L - W-B Stop light switch signal Brake pedal not depressed --> depressed Below 1 V --> 11 to 14 V
      S64-10 (STP1) - LA-43 (E) L - W-B Stop light switch signal Brake pedal not depressed --> depressed Below 1 V --> 11 to 14 V
      S63-1 (BCK1) - LA-43 (E) 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 (E) R - W-B Stop light switch signal Brake pedal not depressed --> depressed Below 1 V --> 11 to 14 V
      S63-9 (LCTY) - LA-43 (E) G - W-B Illumination signal Luggage compartment door closed --> opened Pulse generation
      S63-11 (LGLP) - LA-43 (E) B - W-B Illumination signal Luggage compartment door closed --> opened Below 1 V --> 11 to 14 V
      S63-13 (TIL4) - LA-43 (E) BR - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14 V
      S63-14 (TIL3) - LA-43 (E) BR - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14 V
      S63-15 (LCE2) - LA-43 (E) V - W-B Taillight circuit Headlight dimmer switch OFF --> TAIL Below 1 V --> 11 to 14 V
      S62-6 (STP4) - LA-43 (E) B - W-B Stop light switch signal Brake pedal not depressed --> depressed Below 1 V --> 11 to 14 V
      S62-8 (LGCY) - LA-43 (E) GR - W-B Illumination signal Luggage compartment door closed --> opened Below 1 V --> 11 to 14 V
      S62-9 (LIN) - LA-43 (E) L - W-B LIN Engine switch on (IG) Pulse generation
      S62-13 (PBIL) - LA-43 (E) R - W-B Illumination signal Front seat inner belt illumination off --> illuminated Below 1 V --> 11 to 14 V
      S62-16 (STOP) - LA-43 (E) G - W-B Stop light switch signal Brake pedal not depressed --> depressed Below 1V --> 11 to 14 V
      S62-20 (CANP) - LA-43 (E) B - W-B CAN communication Engine switch on (IG) Pulse generation
      S62-21 (RSPL) - LA-43 (E) V - W-B Illumination signal Rear interior foot light LH off --> illuminated Illuminated
      S62-28 (CANN) - LA-43 (E) W - W-B CAN communication Engine switch on (IG) Pulse generation
      S61-21 (DBIL) - LA-43 (E) P - W-B Illumination signal Front seat inner belt illumination off --> illuminated Below 1 V --> 11 to 14 V
      S61-25 (RSPR) - LA-43 (E) V - W-B Illumination signal Rear interior foot light RH off --> illuminated Illuminated

      If the result is not as specified, the junction block may have a malfunction.

  5. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH 
    Fig 6: Identifying Front Multiplex Network Door ECU RH Connector
    G04944619Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N1 ECU connector.
    2. Measure the resistance according to the value (s) in the table below.
      FRONT MULTIPLEX NETWORK DOOR ECU RH (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N1-1 (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 N1 ECU connector.
    4. Measure the voltage according to the value (s) in the table below.
      FRONT MULTIPLEX NETWORK DOOR ECU RH (RECONNECT)

      Terminal No. (Symbols) 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
      N1-3 (SIG) - N1-1 (GND) V - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      N1-6 (BDR) - N1-1 (GND) O - W-B Battery power supply Always 11 to 14 V
      N1-9 (CANP) - N1-1 (GND) R - W-B CAN communication Engine switch on (IG) Pulse generation
      N1-10 (CANN) - N1-1 (GND) W - W-B CAN communication Engine switch on (IG) Pulse generation
      N1-11 (CPUB) - N1-1 (GND) R - W-B Battery power supply Always 11 to 14 V
      N1-16 (BDG1) - N1-1 (GND) R - W-B Battery power supply Always 11 to 14 V
      z9-2 (LP+)-z9-11 (HTR-) LG-B 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 
    Fig 7: Identifying Front Multiplex Network Door ECU LH Connector
    G04944620Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N10 ECU connector.
    2. Measure the resistance according to the value (s) in the table below.
      FRONT MULTIPLEX NETWORK DOOR ECU LH (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N10-1 (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 N10 ECU connector.
    4. Measure the voltage according to the value (s) in the table below.
      FRONT MULTIPLEX NETWORK DOOR ECU LH (RECONNECT)

      Terminal No. (Symbols) 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
      N10-3 (SIG) - N10-1 (GND) L - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      N10-6 (BDR) - N10-1 (GND) O - W-B Battery power supply Always 11 to 14 V
      N10-9 (CANP) - N10-1 (GND) R - W-B CAN communication Engine switch on (IG) Pulse generation
      N10-10 (CANN) - N10-1 (GND) W - W-B CAN communication Engine switch on (IG) Pulse generation
      N10-11 (CPUB) - N10-1 (GND) B - W-B Battery power supply Always 11 to 14 V
      N10-16 (BDG1) - N10-1 (GND) R - W-B Battery power supply Always 11 to 14 V
      z10-2 (LP+) - z10-11 (HTR-) LG-B 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 
    Fig 8: Identifying Rear Multiplex Network Door ECU RH Connector
    G04944621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the O3 ECU connector.
    2. Measure the resistance according to the value (s) in the table below.
      REAR MULTIPLEX NETWORK DOOR ECU RH (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      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 ECU connector.
    4. Measure the voltage according to the value (s) in the table below.
      REAR MULTIPLEX NETWORK DOOR ECU RH (RECONNECT)

      Terminal No. (Symbols) 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 ash tray light RH off --> illuminated Below 1 V --> 11 to 14 V
      O3-3 (SIG) - O3-1 (GND) Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      O3-6 (BDR) - O3-1 (GND) L - W-B Battery power supply Always 11 to 14 V
      O3-9 (CANP) - O3-1 (GND) R - W-B CAN communication Engine switch on (IG) Pulse generation
      O3-10 (CANN) - O3-1 (GND) W - W-B CAN communication Engine switch on (IG) Pulse generation
      O3-11 (CPUB) - O3-1 (GND) R - W-B Battery power supply Always 11 to 14 V
  8. CHECK REAR MULTIPLEX NETWORK DOOR ECU LH 
    Fig 9: Identifying Rear Multiplex Network Door ECU LH Connector
    G04944622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the O14 ECU connector.
    2. Measure the resistance according to the value (s) in the table below.
      REAR MULTIPLEX NETWORK DOOR ECU LH (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      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 ECU connector.
    4. Measure the voltage according to the value (s) in the table below.
      REAR MULTIPLEX NETWORK DOOR ECU LH (RECONNECT)

      Terminal No. (Symbols) 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 14V
      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 ash tray light LH off --> illuminated Below 1 V --> 11 to 14 V
      O14-3 (SIG) - O14-1 (GND) Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      O14-6 (BDR) - O14-1 (GND) L - W-B Battery power supply Always 11 to 14 V
      O14-9 (CANP) - O14-1 (GND) R - W-B CAN communication Engine switch on (IG) Pulse generation
      O14-10 (CANN) - O14-1 (GND) W - W-B CAN communication Engine switch on (IG) Pulse generation
      O14-11 (CPUB) - O14-1 (GND) R - W-B Battery power supply Always 11 to 14 V
  9. CHECK WINDSHIELD WIPER SWITCH 
    Fig 10: Identifying Windshield Wiper Switch Connector
    G04944623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L25 switch connector.
    2. Measure the resistance according to the value (s) in the table below.
      WINDSHIELD WIPER SWITCH (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      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 ECU connector.
    4. Measure the voltage according to the value (s) in the table below.
      WINDSHIELD WIPER SWITCH (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L25-1 (B) - L25-8 (E) B - W-B Battery power supply Always 11 to 14 V
      L25-2 (IG) - L25-8 (E) G - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      L25-5 (CANP) - L25-8 (E) R - W-B CAN communication Engine switch on (IG) Pulse generation
      L25-6 (CANN) - L25-8 (E) W - W-B CAN communication Engine switch on (IG) Pulse generation
      L25-7 (HEAD) - L25-8 (E) R - W-B Lo-beam circuit Headlight dimmer switch OFF --> HEAD Below 1 V --> 11 to 14 V

      If the result is not as specified, the switch may have a malfunction.

  10. CHECK MAP LIGHT ASSEMBLY 
    Fig 11: Identifying Map Light Assembly Connector
    G04944624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the X4 and X6 light connectors.
    2. Measure the resistance according to the value (s) in the table below.
      MAP LIGHT ASSEMBLY (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      X4-15 (GND6) - Body ground G - Body ground Ground Always Below 1 Ω
      X4-16 (GND9) - Body ground B - Body ground Ground Always Below 1 Ω
      X6-17 (GND6) - Body ground G - 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 light connectors.
    4. Measure the voltage according to the value (s) in the table below.
      MAP LIGHT ASSEMBLY (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      X4-3 (RLSW) - X4-16 (GND9) V - 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-B RL spot light circuit RL spot light switch OFF --> ON Below 1V --> 11 to 14 V
      X4-6 (+B) - X4-16 (GND9) B-B Battery power supply Always 11 to 14 V
      X4-11 (ILLB) - X4-16 (GND9) R-B Battery power supply Always 11 to 14 V
      X4-12 (RLVS) - X4-16 (GND9) V - 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 - B RR vanity light circuit RR vanity light switch OFF --> ON Below 1 V --> 11 to 14 V
      X4-27 (DOME) - X4-16 (GND9) R - B Battery power supply Always 11 to 14 V
      X6-2 (LIN) - X4-16 (GND9) L - B LIN Engine switch on (IG) Pulse generation
      X6-7 (RLMP) - X4-16 (GND9) W - B RL spot light circuit Always 11 to 14 V
      X6-8 (RRMP) - X4-16 (GND9) B - B RR spot light circuit Always 11 to 14 V
      X6-11 (ILL+) - X4-16 (GND9) G - B ACC power supply Engine switch on (ACC) 11 to 14 V
      X6-13 (ILL-) - X4-16 (GND9) LG - B Illumination signal
      • Engine switch on (ACC)
      • Headlight dimmer switch OFF --> TAIL
      		 11 to 14 V --> Below 1 V
      X6-14 (RRVT) - X4-16 (GND9) B - B RR vanity light circuit RR vanity light switch OFF --> ON 11 to 14 V --> Below 1 V
      X6-16 (RLVT) - X4-16 (GND9) B - 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 - B Rear dome light circuit Rear dome light off --> illuminated (based on rear door light control) 11 to 14 V --> Below 1 V

      If the result is not as specified, the light may have a malfunction.

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