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Terminals Of Ecu

  1. CHECK GATEWAY ECU 
    1. Disconnect the gateway ECU connector
      Fig 1: Identifying J76 Connector Terminal
      G05753961Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J76-1 (IG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      J76-1 (IG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      J76-2 (ACC) - Body ground O - Body ground Power source (ACC) Engine switch off Below 1 V
      J76-2 (ACC) - Body ground O - Body ground Power source (ACC) Engine switch on (IG) 11 to 14 V
      J76-3 (MPD1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J76-4 (MPI1) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      J76-10 (BATT) - Body ground LG - Body ground Power source (+B) Always 11 to 14 V
      J76-12 (MPD2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J76-13 (MPI2) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      J76-24 (GND) - 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 (COWL SIDE JUNCTION BLOCK LH) 
    1. Disconnect the main body ECU LH (cowl side junction block LH) connectors
      Fig 2: Identifying Cowl Side Junction Block LH Connectors Location
      G05753962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A30-17 (MPX2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      LD-3 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      LD-8 (SGND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      LD-9 (SGND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      LD-18 (MPXB) - Body ground LG - Body ground Power source (+B) Always 11 to 14 V
      LJ-23 (BKUP) - Body ground Y - Body ground Power source (+B) Always 11 to 14 V
      Q3-15(MPX1)-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 (COWL SIDE JUNCTION BLOCK RH) 
    1. Disconnect the main body ECU RH (cowl side junction block RH) connectors.
      Fig 3: Identifying Cowl Side Junction Block RH Connectors Location
      G05753963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J75-19 (MPX4)-Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J75-20 (MPX6) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J75-21 (MPX2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      P1-5 (MPX5) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      RA-4 (GND2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      RA-5 (GND2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      RA-15 (ALTB) - Body ground SB - Body ground Power source (+B) Always 11 to 14 V
      RA-20(MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      RD-7 (GND2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      RD-11 (GND2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      RD-17 (GND1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      RJ-21 (MPXI) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      RK-5 (BECU) - Body ground G-R - Body ground Power source (+B) Always 11 to 14 V
      RM-1 (IG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      RM-1 (IG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      RN-1 (BATB) - Body ground R - Body ground Power source (+B) Always 11 to 14 V

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

  4. CHECK MULTIPLEX TILT AND TELESCOPIC ECU 
    1. Disconnect the multiplex tilt and telescopic ECU connector.
      Fig 4: Identifying J28 Connector Terminal
      G05753964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J28-2 (+B) - Body ground SB - Body ground Power source (+B) Always 11 to 14 V
      J28-5(MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J28-8 (IG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      J28-8 (IG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      J28-9 (ECUB) - Body ground LG - Body ground Power source (+B) Always 11 to 14 V
      J28-11 (GND) - 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.

  5. CHECK MULTIPLEX NETWORK MASTER SWITCH 
    1. Disconnect the multiplex network master switch connector.
      Fig 5: Identifying M7 Connector Terminal
      G05753965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      M7-2 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      M7-7 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      M7-8 (MPX2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      M7-9 (CPUB) - Body ground G - Body ground Power source (+B) Always 11 to 14 V
      M7-10 (BDR) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      M7-20 (SIG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      M7-20 (SIG) - Body ground B - Body ground Power source (IG) 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

  6. CHECK MULTIPLEX NETWORK SWITCH ASSEMBLY (for Front Passenger Side) 
    1. Disconnect the multiplex network switch connector
      Fig 6: Identifying L13 Connector Terminal
      G05753966Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L13-2 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      L13-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L13-12 (BDR) - L13-7 (GND) L - W-B +B power supply Always 11 to 14 V

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

  7. CHECK MULTIPLEX NETWORK SWITCH ASSEMBLY (REAR LH) 
    1. Disconnect the multiplex network switch connector
      Fig 7: Identifying O1 Connector Terminal
      G05753967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below
      RESISTANCE REFERENCE

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O1-2 (MPX1) - Body ground W-B - Body ground MPX line Always 10 kΩ or higher
      O1-7 (GND) - Body ground W-B - Body ground Ground Always Below 1
      O1-12 (BDR) - O1-7 (GND) O-W-B +B power supply Always 11 to 14 V

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

  8. CHECK MULTIPLEX NETWORK SWITCH ASSEMBLY (REAR RH) 
    1. Disconnect the multiplex network switch connector.
      Fig 8: Identifying N1 Connector Terminal
      G05753968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N1-2 - Body ground GR - body ground MPX line Always 10 kΩ or higher
      N1-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N1-12(BDR) - N1-7 (GND) O - W-B +B power supply Always 11 to 14 V

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

  9. CHECK OUTER MIRROR CONTROL ECU LH 
    1. Disconnect the outer mirror control ECU LH connectors
      Fig 9: Identifying M10 Connector Terminal
      G05753969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      M10-1 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      M10-3 (SIG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      M10-3 (SIG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      M10-4 (CPUB) - Body ground G - Body ground Power source (+B) Always 11 to 14 V
      M10-6 (BDR) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      M10-8 (MPX1) - 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 FRONT POWER SEAT SWITCH RH (POSITION CONTROL ECU) 
    1. Disconnect the front power seat switch RH (position control ECU) connectors
      Fig 10: Identifying T7 And T6 Connector Terminal
      G05753970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      T6-1 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      T6-5 (+B) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      T7-1 (MPXI) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      T7-4 (IG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      T7-4 (IG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      T7-8 (SYSB) - Body ground P - Body ground Power source (+B) Always 11 to 14 V

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

  11. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Measure the voltage and resistance according to the value(s) in the table below.
      Fig 11: Identifying P33 Connector Terminal
      G05753971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P33-1 (+B1) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      P33-17(E) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      P33-18(IG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      P33-18 (IG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      P33-19 (ACC) - Body ground O - Body ground Power source (ACC) Engine switch off Below 1 V
      P33-19 (ACC) - Body ground O - Body ground Power source (ACC) Engine switch on (IG) 11 to 14 V
      P33-27 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      P33-28 (MPX2) - 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 FRONT CONTROLLER (ENGINE ROOM RELAY BLOCK NO. 2) 
    1. Disconnect the front controller (engine room relay block No. 2) connectors
      Fig 12: Identifying P33 Connector Terminal
      G05753972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2E-3 (FMIG) - Body ground B-Y - Body ground Power source (IG) Engine switch off Below 1 V
      2E-3 (FMIG) - Body ground B-Y - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      2E-4 (FMBB) - Body ground G-R - Body ground Power source (+B) Always 11 to 14 V
      2F-1 (E) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      2F-6 (MPX2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      2F-5 (MPX1) - 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.

  13. CHECK OUTER MIRROR CONTROL ECU RH 
    1. Disconnect the outer mirror control ECU RH connector
      Fig 13: Identifying 2E And 2F Connector Terminal
      G05753973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L10-1 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      L10-3 (SIG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      L10-3 (SIG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14V
      L10-4(CPUB) - Body ground G - Body ground Power source (+B) Always 11 to 14 V
      L10-6(BDR) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      L10-8(MPX1) - 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 FRONT POWER SEAT SWITCH LH (POSITION CONTROL ECU) 
    1. Disconnect the front power seat switch LH (position control ECU) connectors
      Fig 14: Identifying L10 Connector Terminal
      G05753974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      U6-1 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      U6-5 (+B) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      U7-1 (MPXI) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      U7-4 (IG) - Body ground Y - Body ground Power source (IG) Engine switch off Below 1 V
      U7-4 (IG) - Body ground Y - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      U7-8 (SYSB) - Body ground LG - Body ground Power source (+B) Always 11 to 14 V

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

  15. CHECK SLIDING ROOF CONTROL ECU 
    1. Disconnect the sliding roof control ECU connector
      Fig 15: Identifying L10 Connector Terminal
      G05753975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      R6-5 (B) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      R6-6 (IG) - Body ground V - Body ground Power source (IG) Engine switch off Below 1 V
      R6-6 (IG) - Body ground V - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      R6-7 (E) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      R6-10 (MPX1) - 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 RAIN SENSOR 
    1. Disconnect the rain sensor connector.
      Fig 16: Identifying R7 Connector Terminal
      G05753976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      R7-1 (SIG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      R7-1 (SIG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      R7-2 (MPX) - 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.

  17. CHECK POWER SOURCE CONTROL ECU 
    1. Disconnect the power source control ECU connector
      Fig 17: Identifying J55 Connector Terminal
      G05753977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J55-6 (GND2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      J55-7 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J55-12 (AM2) - Body ground O - Body ground Power source (+B) Always 11 to 14 V
      J55-24 (MPX2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J55-33 (AM1) - Body ground O - Body ground Power source (+B) Always 11 to 14 V

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

  18. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY 
    1. Disconnect the windshield wiper switch assembly connector
      Fig 18: Identifying J26 Connector Terminal
      G05753978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J26-1 (B) - Body ground LG - Body ground Power source (+B) Always 11 to 14 V
      J26-2 (IG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      J26-2 (IG) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      J26-5 (E) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      J26-6 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      J26-7 (MPX2) - 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

  19. CHECK COMBINATION METER ECU 
    1. Disconnect the combination meter ECU connector
      Fig 19: Identifying J34 Connector Terminal
      G05753979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J34-1 (E2) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      J34-6 (MPX+) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      J34-12 (IG+) - Body ground O - Body ground Power source (IG) Engine switch off Below 1 V
      J34-12 (IG+) - Body ground O - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      J34-13 (ES) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      J34-18 (MPX-) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      J34-23 (B) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      J34-24 (B) - Body ground LG - Body ground Power source (+B) Always 11 to 14V

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

  20. CHECK CLEARANCE WARNING ECU 
    1. Disconnect the clearance warning ECU connector.
      Fig 20: Identifying Q37 Connector Terminal
      G05753980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      Q37-8 (IG) - Body ground Y - Body ground Power source (IG) Engine switch off Below 1 V
      Q37-8 (IG) - Body ground Y - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      Q37-26 (M+) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      Q37-27 (E) - 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.

  21. CHECK AFS ECU 
    1. Disconnect the AFS ECU connector
      Fig 21: Identifying A27 Connector Terminal
      G05753981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A27-1 (E1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      A27-2 (IG) - Body ground B-O - Body ground Power source (IG) Engine switch off Below 1 V
      A27-2 (IG) - Body ground B-O - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      A27-5 (MPX1) - Body ground BR-R - Body ground MPX line Always 10 kΩ or higher
      A27-6 (MPX2) - 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.

  22. CHECK AIR CONDITIONING ECU 
    1. Disconnect the air conditioning ECU connector.
      Fig 22: Identifying J58 Connector Terminal
      G05753982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      J58-1 (B) - Body ground Y - Body ground Power source (+B) Always 11 to 14 V
      J58-20 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      J58-21 (IG+) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      J58-21 (IG+) - Body ground B - Body ground Power source (IG) Engine switch on (IG) 11 to 14 V
      J58-30 (MPX+) - Body ground BR - Body ground MPX line Always 10 kΩ or higher
      J58-31 (MPX-) - Body ground BR - Body ground MPX line Always 10kΩ or higher

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

  23. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER 
    1. Disconnect the tire pressure warning ECU and receiver connector.
      Fig 23: Identifying J49 Connector Terminal
      G05753983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below
      VOLTAGE AND RESISTANCE SPECIFICATION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      IG (J49-1) - Body ground B - Body ground IG power source Engine switch on (IG) 11 to 14 V
      MPX2 (J49-2) - Body ground BR - Body ground MPX line Engine switch on (IG) 10 kΩ or higher
      MPX1 (J49-3) - Body ground BR - Body ground MPX line Engine switch on (IG) 10 kΩ or higher
      GND (J49-6) - Body ground W-B - Body ground Tire pressure warning ECU and receiver ground Always Below 1 Ω

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

  24. CHECK OVERHEAD JUNCTION BLOCK 
    1. Disconnect the overhead junction block connector
      Fig 24: Identifying R5 Connector Terminal
      G05753984Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below
      RESISTANCE REFERENCE

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      R5-1 (+B1) - Body ground L - Body ground Power source (IG) Always 11 to 14 V
      R5-18 (GND3) - Body ground W-B - Body ground Ground Always Below 1 Ω
      R5-36 (MPX) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      R5-37 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      R5-38 (MPX2) Body ground GR - Body ground MPX line Always 10 kΩ or higher
      R5-39 (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

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