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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
      G05753961Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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 kΩ or higher
    MPI2 (J76-13) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
    MPD1 (J76-3) - Body ground BR - 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
      G05828453Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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
      G05828454Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    IG (RM-1) - Body ground B - Body ground Power source (IG) Engine switch: off Below 1 V
    IG (RM-1) - Body ground B - 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 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
    MPX5 (P1-5) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
    MPX6 (J75-20) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
    MPX4 (J75-19) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
    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 And Telescopic ECU Connector Terminals
      G05753964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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 ECU Connector Terminals
      G05828456Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminals 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 Ω
    MPX1 (M7-7) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
    MPX2 (M7-8) - 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.

  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
      G05753969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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 POWER SEAT CONTROL ECU RH 
    1. Disconnect the power seat control ECU RH connectors.
      Fig 7: Identifying Power Seat Control ECU RH Connectors Terminals
      G05753970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connectors.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminals 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 Ω
    MPX1 (T7-1) - 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.

  8. CHECK CERTIFICATION ECU 
    1. Disconnect the certification ECU connector.
      Fig 8: Identifying Certification ECU Connector Terminals
      G05753971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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 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 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.

  9. CHECK FRONT CONTROLLER ECU 
    1. Disconnect the front controller ECU connectors.
      Fig 9: Identifying Front Controller ECU Connectors Terminals
      G05753972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  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
      G05753973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  11. CHECK POWER SEAT CONTROL ECU LH 
    1. Disconnect the power seat control ECU LH connectors.
      Fig 11: Identifying Power Seat Control ECU LH Connectors Terminals
      G05753974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  12. CHECK SLIDING ROOF CONTROL ECU 
    1. Disconnect the sliding roof control ECU connector.
      Fig 12: Identifying Sliding Roof Control ECU Connector Terminals
      G05753975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  13. CHECK RAIN SENSOR 
    1. Disconnect the rain sensor connector.
      Fig 13: Identifying Rain Sensor Connector Terminals
      G05753976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  14. CHECK POWER SOURCE CONTROL ECU 
    1. Disconnect the power source control ECU connector.
      Fig 14: Identifying Power Source Control ECU Connector Terminals
      G05753977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminals 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 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.

  15. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY 
    1. Disconnect the windshield wiper switch assembly connector.
      Fig 15: Identifying Windshield Wiper Switch Assembly Connector Terminals
      G05753978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  16. CHECK COMBINATION METER ECU 
    1. Disconnect the combination meter ECU connector.
      Fig 16: Identifying Combination Meter ECU Connector Terminals
      G05753979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminals 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 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.

  17. CHECK CLEARANCE WARNING ECU 
    1. Disconnect the clearance warning ECU connector.
      Fig 17: Identifying Clearance Warning ECU Connector Terminals
      G05753980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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.

  18. CHECK AFS ECU 
    1. Disconnect the AFS ECU connector.
      Fig 18: Identifying AFS ECU Connector Terminals
      G05828469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminals 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 kΩ or higher
    MPX2 (A27-6) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
    E1 (A27-1) - 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.

  19. CHECK AIR CONDITIONING ECU 
    1. Disconnect the air conditioning ECU connector.
      Fig 19: Identifying Air Conditioning ECU Connector Terminals
      G05753982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and the resistance of the wire harness side connector.
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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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