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Terminals Of Ecu

  1. CHECK MULTIPLEX NETWORK GATEWAY ECU 
    1. Disconnect the multiplex network gateway ECU connector.
      Fig 1: Identifying Multiplex Network Gateway ECU Connector Terminals
      G04051806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      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 O - Body ground Power source (ACC) Engine switch: off Below 1 V
      ACC (J76-2) - Body ground O - 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 k ohms or higher
      MPI2 (J76-13) - Body ground BR - Body ground MPX line Always 10 k ohms or higher
      MPD1 (J76-3) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPD2 (J76-12) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      GND (J76-24) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms

      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 Connector Terminals
      G04051807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      SGND (LD-8) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      SGND (LD-9) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      MPX1 (Q3-15) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX2 (A30-17) - Body ground GR - Body ground MPX line Always 10 k ohms 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 Connector Terminals
      G04051808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal No. Wiring Color Terminal Description Condition Specified Condition
      IG (RA-1) - Body ground Y - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (RA-1) - Body ground Y - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      ACC (RD-27) - Body ground O - Body ground Power source (ACC) Engine switch: off Below 1 V
      ACC (RD-27) - Body ground O - 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 ohms
      GND2 (RD-7) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      GND2 (RA-4) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      GND2 (RA-5) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      GND1 (RD-17) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      MPX5 (P1-5) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX6 (J75-20) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX4 (J75-19) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX1 (RA-20) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX1 (RJ-21) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX2 (J75-21) - Body ground GR - Body ground MPX line Always 10 k ohms 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
      G04051809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      MPX1 (J28-5) - Body ground GR - Body ground MPX line Always 10 k ohms 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 ECU Connector Terminals
      G04051810Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal No. Wiring Color Terminal Description Condition Specified Condition
      SIG (M7-20) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      SIG (M7-20) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      CPUB (M7-9) - Body ground G - Body ground Power source (+B) Always 10 to 14 V
      BDR (M7-10) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      GND (M7-2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      MPX1 (M7-7) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX2 (M7-8) - Body ground GR - Body ground MPX line Always 10 k ohms 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
      G04051811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      MPX1 (M10-8) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  7. CHECK POWER SEAT CONTROL ECU RH 
    1. Disconnect the power seat control ECU RH connectors.
      Fig 7: Identifying Power Seat Control ECU RH Connector Terminals
      G04051812Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal No. Wiring Color Terminal Description Condition Specified Condition
      IG (T7-4) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (T7-4) - Body ground B - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      +B (T6-5) - Body ground L - Body ground Power source (+B) Always 10 to 14 V
      SYSB (T7-8) - Body ground P - Body ground Power source (+B) Always 10 to 14 V
      GND (T6-1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      MPX1 (T7-1) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  8. CHECK CERTIFICATION ECU 
    1. Disconnect the certification ECU connector.
      Fig 8: Identifying Certification ECU Connector Terminals
      G04051813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 O - Body ground Power source (ACC) Engine switch: off Below 1 V
      ACC (P33-19) - Body ground O - 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 ohms
      MPX1 (P33-27) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX2 (P33-28) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  9. CHECK FRONT CONTROLLER ECU 
    1. Disconnect the front controller ECU connectors.
      Fig 9: Identifying Front Controller ECU Connector Terminals
      G04051814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      2F-6 - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      2F-5 - Body ground L - Body ground MPX line Always 10 k ohms or higher

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

  10. CHECK OUTER MIRROR CONTROL ECU RH 
    1. Disconnect the outer mirror control ECU RH connector.
      Fig 10: Identifying Outer Mirror Control ECU RH Connector Terminals
      G04051815Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      MPX1 (L10-8) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  11. CHECK POWER SEAT CONTROL ECU LH 
    1. Disconnect the power seat control ECU LH connectors.
      Fig 11: Identifying Power Seat Control ECU LH Connector Terminals
      G04051816Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      MPX1 (U7-1) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  12. CHECK SLIDING ROOF CONTROL ECU 
    1. Disconnect the sliding roof control ECU connector.
      Fig 12: Identifying Sliding Roof Control ECU Connector Terminals
      G04051817Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbol (Terminal 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 ohms
      MPX1 (R6-10) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  13. CHECK RAIN SENSOR 
    1. Disconnect the rain sensor connector.
      Fig 13: Identifying Rain Sensor Connector Terminals
      G04051818Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbol (Terminal 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 k ohms or higher

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

  14. CHECK POWER SOURCE CONTROL ECU 
    1. Disconnect the power source control ECU connector.
      Fig 14: Identifying Power Source Control ECU Connector Terminals
      G04051819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal No. Wiring Color Terminal Description Condition Specified Condition
      AM1 (J55-33) - Body ground O - Body ground Power source (+B) Always 10 to 14 V
      AM2 (J55-12) - Body ground O - Body ground Power source (+B) Always 10 to 14 V
      MPX1 (J55-7) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      MPX2 (J55-24) - Body ground GR - Body ground MPX line Always 10 k ohms or higher
      GND2 (J55-6) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms

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

  15. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY 
    1. Disconnect the windshield wiper switch assembly connector.
      Fig 15: Identifying Windshield Wiper Switch Assembly Connector Terminals
      G04051820Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      MPX1 (J26-6) - Body ground GR - Body ground MPX line Always 10 k ohms or higher

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

  16. CHECK COMBINATION METER ECU 
    1. Disconnect the combination meter ECU connector.
      Fig 16: Identifying Combination Meter ECU Connector Terminals
      G04051821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbol (Terminal No. Wiring Color Terminal Description Condition Specified Condition
      IG+ (J34-12) - Body ground O - Body ground Power source (IG) Engine switch: off Below 1 V
      IG+ (J34-12) - Body ground O - 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 ohms
      ES (J34-13) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms
      MPX+ (J34-6) - Body ground BR - Body ground MPX line Always 10 k ohms or higher
      MPX- (J34-18) - Body ground BR - Body ground MPX line Always 10 k ohms or higher

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

  17. CHECK CLEARANCE WARNING ECU 
    1. Disconnect the clearance warning ECU connector.
      Fig 17: Identifying Clearance Warning ECU Connector Terminals
      G04051822Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 ohms
      M+ (Q37-26) - Body ground BR - Body ground MPX line Always 10 k ohms or higher

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

  18. CHECK AFS ECU 
    1. Disconnect the AFS ECU connector.
      Fig 18: Identifying AFS ECU Connector Terminals
      G04051823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbol (Terminal No. Wiring Color Terminal Description Condition Specified Condition
      IG (A27-2) - Body ground B-O - Body ground Power source (IG) Engine switch: off Below 1 V
      IG (A27-2) - Body ground B-O - Body ground Power source (IG) Engine switch: on (IG) 10 to 14 V
      MPX1 (A27-5) - Body ground BR-R - Body ground MPX line Always 10 k ohms or higher
      MPX2 (A27-6) - Body ground BR - Body ground MPX line Always 10 k ohms or higher
      E1 (A27-1)- Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms

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

  19. CHECK AIR CONDITIONING ECU 
    1. Disconnect the air conditioning ECU connector.
      Fig 19: Identifying Air Conditioning ECU Connector Terminals
      G04051824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
      TERMINAL DESCRIPTION AND CONDITION TABLE

      Symbols (Terminal 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 k ohms or higher
      MPX- (J58-31) - Body ground BR - Body ground MPX line Always 10 k ohms or higher
      GND (J58-20) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms

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

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