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Terminals Of Ecu

  1. CHECK MULTIPLEX NETWORK GATEWAY ECU 
    1. Disconnect the multiplex network gateway ECU connector.
      Fig 1: Identifying J76 Connector Terminals
      GTY119296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IG (J76-1) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (J76-1) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      ACC (J76-2) - Body ground BE - Body ground Power source (ACC) Engine switch: off Below 1 V
      ACC (J76-2) - Body ground BE - Body ground Power source (ACC) Engine switch: on (IG) 10 to 14 V
      BATT (J76-10) - Body ground LG - Body ground Power source (+B) Always 10 to 14 V
      MPI1 (J76-4) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      MPI2 (J76-13) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      MPD1 (J76-3) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPD2 (J76-12) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      GND (J76-24) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω

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

  2. CHECK MAIN BODY ECU LH 
    1. Disconnect the main body ECU LH connectors.
      Fig 2: Identifying Main Body ECU LH Connectors Terminals
      GTY135642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (LK-6) - Body ground Y - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (LK-6) - Body ground Y - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      BKUP (LJ-23) - Body ground Y - Body ground Power source (+B) Always 10 to 14 V
      MPXB (LD-18) - Body ground LG - Body ground Power source (+B) Always 10 to 14 V
      GND (LD-3) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      SGND (LD-8) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      SGND (LD-9) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (Q3-15) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPX2 (A30-17) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  3. CHECK MAIN BODY ECU RH 
    1. Disconnect the main body ECU RH connectors.
      Fig 3: Identifying Main Body ECU RH Connectors Terminals
      GTY119662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (RM-1) - Body ground B-W - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (RM-1) - Body ground B-W - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      ACC (RD-27) - Body ground BE - Body ground Power source (ACC) Engine switch: off Below 1 V
      ACC (RD-27) - Body ground BE - Body ground Power source (ACC) Engine switch: on (ACC) 10 to 14 V
      ALTB (RA-15) - Body ground SB - Body ground Power source (+B) Always 10 to 14 V
      BECU (RK-5) - Body ground G-R - Body ground Power source (+B) Always 10 to 14 V
      BATB (RN-1) - Body ground R - Body ground Power source (+B) Always 10 to 14 V
      GND2 (RD-11) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      GND2 (RD-7) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      GND2 (RA-4) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      GND2 (RA-5) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      GND1 (RD-17) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (RA-20) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPX1 (RJ-21) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPX2 (J75-21) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  4. CHECK TILT AND TELESCOPIC ECU 
    1. Disconnect the tilt and telescopic ECU connector.
      Fig 4: Identifying Tilt & Telescopic ECU Connector Terminals
      GTY119298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (J28-8) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (J28-8) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      ECUB (J28-9) - Body ground LG - Body ground Power source (+B) Always 10 to 14 V
      +B (J28-2) - Body ground SB - Body ground Power source (+B) Always 10 to 14 V
      GND (J28-11) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (J28-5) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  5. CHECK POWER WINDOW MASTER SWITCH ECU 
    1. Disconnect the power window master switch ECU connector.
      Fig 5: Identifying Power Window Master Switch M17 Connector Terminals
      GTY140058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SIG (M17-18) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      SIG (M17-18) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      CPUB (M17-15) - Body ground G - Body ground Power source (+B) Always 10 to 14 V
      E (M17-12) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (M17-3) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPX2 (M17-2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  6. CHECK OUTER MIRROR CONTROL ECU LH 
    1. Disconnect the outer mirror control ECU LH connector.
      Fig 6: Identifying Outer Mirror Control ECU LH Connector Terminals
      GTY119299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SIG (M10-3) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      SIG (M10-3) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      CPUB (M10-4) - Body ground G - Body ground Power source (+B) Always 10 to 14 V
      BDR (M10-6) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      GND (M10-1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (M10-8) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  7. CHECK CERTIFICATION ECU 
    1. Disconnect the certification ECU connector.
      Fig 7: Identifying Certification ECU Connector Terminals
      GTY131756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (P33-18) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (P33-18) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      ACC (P33-19) - Body ground BE - Body ground Power source (ACC) Engine switch: off Below 1 V
      ACC (P33-19) - Body ground BE - Body ground Power source (ACC) Engine switch: on (IG) 10 to 14 V
      +B1 (P33-1) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      E (P33-17) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (P33-27) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPX2 (P33-28) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  8. CHECK FRONT CONTROLLER ECU 
    1. Disconnect the front controller ECU connectors.
      Fig 8: Identifying Front Controller ECU Connector Terminals
      GTY130642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      2E-3 - Body ground B-Y - Body ground Power source (IG) Engine switch: off Below 1 V
      2E-3 - Body ground B-Y - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      2E-4 - Body ground G-R - Body ground Power source (+B) Always 10 to 14 V
      2F-1 - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      2F-6 - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      2F-5 - Body ground L - Body ground MPX line Always 10 kΩ or higher

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

  9. CHECK OUTER MIRROR CONTROL ECU RH 
    1. Disconnect the outer mirror control ECU RH connector.
      Fig 9: Identifying Outer Mirror Control ECU RH Connector Terminals
      GTY119303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SIG (L10-3) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      SIG (L10-3) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      CPUB (L10-4) - Body ground G - Body ground Power source (+B) Always 10 to 14 V
      BDR (L10-6) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      GND (L10-1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (L10-8) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  10. CHECK POWER SEAT CONTROL ECU LH 
    1. Disconnect the power seat control ECU LH connectors.
      Fig 10: Identifying Power Seat Control ECU LH Connector Terminals
      GTY119302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (U7-4) - Body ground Y - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (U7-4) - Body ground Y - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      +B (U6-5) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      SYSB (U7-8) - Body ground LG - Body ground Power source (+B) Always 10 to 14 V
      GND (U6-1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (U7-1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  11. CHECK SLIDING ROOF CONTROL ECU 
    1. Disconnect the sliding roof control ECU connector.
      Fig 11: Identifying Sliding Roof Control ECU R6 Connector Terminals
      GTY119304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (R6-6) - Body ground V - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (R6-6) - Body ground V - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      B (R6-5) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      E (R6-7) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (R6-10) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  12. CHECK RAIN SENSOR 
    1. Disconnect the rain sensor connector.
      Fig 12: Identifying Rain Sensor R7 Connector Terminals
      GTY119305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SIG (R7-1) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      SIG (R7-1) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      MPX (R7-2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  13. CHECK POWER SOURCE CONTROL ECU 
    1. Disconnect the power source control ECU connector.
      Fig 13: Identifying Power Source Control ECU J55 Connector Terminals
      GTY142746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      AM1 (J55-33) - Body ground BE - Body ground Power source (+B) Always 10 to 14 V
      AM2 (J55-12) - Body ground BE - Body ground Power source (+B) Always 10 to 14 V
      MPX1 (J55-7) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      MPX2 (J55-24) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      GND2 (J55-6) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω

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

  14. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY 
    1. Disconnect the windshield wiper switch assembly connector.
      Fig 14: Identifying Windshield Wiper Switch Assembly J26 Connector Terminals
      GTY136938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (J26-2) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (J26-2) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      B (J26-1) - Body ground LG - Body ground Power source (+B) Always 10 to 14 V
      E (J26-5) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX1 (J26-6) - Body ground GR - Body ground MPX line Always 10 kΩ or higher

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

  15. CHECK COMBINATION METER ECU 
    1. Disconnect the combination meter ECU connector.
      Fig 15: Identifying Combination Meter ECU J34 Connector Terminals
      GTY119306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG+ (J34-12) - Body ground BE - Body ground Power source (IG) Engine switch: off Below 1 V
      IG+ (J34-12) - Body ground BE - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      B (J34-23) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      B (J34-24) - Body ground LG - Body ground Power source (+B) Always 10 to 14 V
      E2 (J34-1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      ES (J34-13) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      MPX+ (J34-6) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      MPX- (J34-18) - Body ground BR - Body ground MPX line Always 10 kΩ or higher

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

  16. CHECK CLEARANCE WARNING ECU 
    1. Disconnect the clearance warning ECU connector.
      Fig 16: Identifying Clearance Warning ECU Q37 Connector Terminals
      GTY119307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG (Q37-8) - Body ground Y - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (Q37-8) - Body ground Y - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      E (Q37-27) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      M+ (Q37-26) - Body ground BR - Body ground MPX line Always 10 kΩ or higher

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

  17. CHECK AIR CONDITIONING ECU 
    1. Disconnect the air conditioning ECU connector.
      Fig 17: Identifying Air Conditioning ECU J58 Connector Terminals
      GTY141191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      IG+ (J58-21) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      IG+ (J58-21) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      B (J58-1) - Body ground Y - Body ground Power source (+B) Always 10 to 14 V
      MPX+ (J58-30) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      MPX- (J58-31) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      GND (J58-20) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω

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

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