MULTIPLEX COMMUNICATION SYSTEM TERMINALS OF ECU


  1. CHECK GATEWAY ECU


    1. Disconnect the gateway ECU connector.

      A015ZH8E01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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.

      A0160EVE02

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 signal Always Below 1 Ω
      LD-8 (SGND) - Body ground W-B - Body ground Ground for signal 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.

      A015YLHE03

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 (MPX1) - 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

      • *1: for LHD

      • *2: for RHD

      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.

      A0162M9E01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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.

      A015YWQE10

    2. Measure the voltage and the resistance according to the value(s) in the table below.

      for LHD
      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
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L17-2 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 Ω
      L17-7 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      L17-8 (MPX2) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      L17-9 (CPUB) - Body ground G - Body ground Power source (+B) Always 11 to 14 V
      L17-10 (BDR) - Body ground L - Body ground Power source (+B) Always 11 to 14 V
      L17-20 (SIG) - Body ground B - Body ground Power source (IG) Engine switch off Below 1 V
      L17-20 (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.

      A01621BE17

    2. Measure the voltage and resistance according to the value(s) in the table below.

      for LHD
      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
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      M16-2 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      M16-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M16-12 (BDR) - M16-7 (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.

      A01621BE15

    2. Measure the resistance according to the value(s) in the table below.

      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.

      A01621BE16

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N1-2 (MPX1) - 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 connector.

      A015ZTEE05

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 POWER SEAT CONTROL ECU RH


    1. Disconnect the power seat control ECU RH connectors.

      A0160E0E01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 (MPX1) - 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. Disconnect the certification ECU (smart key ECU assembly) connector.

      A0163DTE01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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


    1. Disconnect the front controller connectors.

      A0162UVE01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 (FMB3) - 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-5 (MPX1) - Body ground L - Body ground MPX line Always 10 kΩ or higher
      2F-6 (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.

  13. CHECK OUTER MIRROR CONTROL ECU RH


    1. Disconnect the outer mirror control ECU RH connector.

      A0162JLE01

    2. Measure the voltage and the resistance according to the value(s) in the table below.

      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 14 V
      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.

      A01632EE01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 (MPX1) - 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.

      A0160W3E01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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.

      A0160QOE01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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.

      A0163CHE01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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.

      A0161OYE01

    2. Measure the resistance and voltage according to the value(s) in the table below.

      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


    1. Disconnect the combination meter connector.

      A015ZX2E01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 14 V

      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.

      A0162I9E01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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.

      A015ZSRE01

    2. Measure the voltage and resistance according to the value(s) in the table below.

      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 A/C AMPLIFIER


    1. Disconnect the A/C amplifier connector.

      A015YPYE01

    2. Measure the voltage and the resistance according to the value(s) in the table below.

      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 10 kΩ or higher

  23. CHECK OVERHEAD JUNCTION BLOCK


    1. Disconnect the overhead junction block connector.

      A015YJ3E03

    2. Measure the resistance according to the value(s) in the table below.

      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.

  24. CHECK DOUBLE LOCK DOOR CONTROL RELAY


    1. Measure the voltage and the resistance according to the value(s) in the table below.

      A015ZPYE05
      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      P34-1 (+B) - Body ground R - Body ground Power source (+B) Always 11 to 14 V
      P34-7 (CPUB) - Body ground LG - Body ground Power source (+B) Always 11 to 14 V
      P34-9 (MPX1) - Body ground GR - Body ground MPX line Always 10 kΩ or higher
      P34-14 (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.