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Terminals Of Ecu

  1. CHECK NETWORK GATEWAY ECU 
    1. Disconnect the G3 ECU connector.
    2. Measure the voltage and resistance of the wire harness side vehicle's side connector.
      Fig 1: Checking Network Gateway ECU
      G02957475Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      NETWORK GATEWAY ECU

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CG (G3-11) - Body ground W-B - Body ground Ground Always Below 1 ohms
      GND (G3-22) - Body ground W-B - Body ground Ground Always Below 1 ohms
      BATT (G3-12) - GND (G3-22) B - W - B +B (BATT) power supply Always 10 to 14 V
      MPD1 (G3-4) - Body ground P-L - Body ground MPX line Always 10 k ohms or higher
      MPD2 (G3-15) - Body ground R-L - Body ground MPX line Always 10 k ohms or higher
      MPI1 (G3-5) - Body ground L-O - Body ground MPX line Always 10 k ohms or higher
      MPI2 (G3-16) - Body ground Y - Body ground MPX line Always 10 k ohms or higher
      MPL1 (G3-6) - Body ground R - Body ground MPX line Always 10 k ohms or higher
      MPL2 (G3-17) - Body ground B-R - 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.

  2. CHECK DRIVER SIDE J/B (DRIVER SIDE J/B ECU) 
    1. Disconnect the 2G connector.
    2. Disconnect the D2 and D4 ECU connectors.
    3. Measure the voltage and resistance of the wire harness side connectors.
      Fig 2: Checking Driver Side J/B (Driver Side J/B ECU)
      G02957476Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      DRIVER SIDE J/B (DRIVER SIDE J/B ECU)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (2G-8) - Body ground W-B - Body ground Ground Always Below 1 ohms
      GND2 (D4-1) - Body ground W-B - Body ground Ground Always Below 1 ohms
      MPX-B (D4-5) - GND (2G-8) L-B - W - B +B (MPX-B) power supply Always 10 to 14 V
      MPX1 (D2-15) - Body ground L-Y - Body ground MPX line Always 10 k ohms or higher
      MPX2 (D4-7) - Body ground W-L - Body ground MPX line Always 10 k ohms or higher
      MPX3 (D4-6) - Body ground G - 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 PASSENGER SIDE J/B (PASSENGER SIDE J/B ECU) 
    1. Disconnect the 3E, 3G and 3H J/B connectors.
    2. Disconnect the P4 and P6 ECU connector.
    3. Measure the voltage and resistance of the wire harness side connectors.
      Fig 3: Checking Passenger Side J/B (Passenger Side J/B ECU)
      G02957477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      PASSENGER SIDE J/B (PASSENGER SIDE J/B ECU)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (3G-8) - Body ground W-B - Body ground Ground Always Below 1 ohms
      GND1 (P4-11) - Body ground W-B - Body ground Ground Always Below 1 ohms
      MPX-B (3E-16) - GND (3G-8) B - W - B +B (MPX-B) power supply Always 10 to 14 V
      AIRBAG (3H-2) - Body ground R - L - Body ground MPX line Always 10 k ohms or higher
      MPX- (P6-4) - Body ground Y - 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 LUGGAGE ROOM J/B ASSY (LUGGAGE ROOM J/B ECU) 
    1. Disconnect the 6A, 6F and 6J J/B connectors.
    2. Disconnect the L24 ECU connector.
    3. Measure the voltage and resistance of the wire harness side connectors.
      Fig 4: Checking Luggage Room J/B Assy (Luggage Room J/B ECU)
      G02957478Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      LUGGAGE ROOM J/B ASSY (LUGGAGE ROOM J/B ECU)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      P- GND (6A-5) - Body ground W - B - Body ground Ground Always Below 1 ohms
      SG (L24-5) - Body ground W - B - Body ground Ground Always Below 1 ohms
      MPX-B (6F-12) -P- GND (6A-5) L - B - W - B +B (MPX-B) power supply Always 10 to 14 V
      MPX+ (L24-2) - Body ground B - Body ground MPX line Always 10 k ohms or higher
      MPX- (L24-13) - Body ground R - 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 MULTIPLEX NETWORK DOOR ECU FRONT LH 
    1. Disconnect the D17 and D19 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 5: Checking Multiplex Network Door ECU Front LH
      G02957479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      MULTIPLEX NETWORK DOOR ECU FRONT LH

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (D19-1) - Body ground W-B - Body ground Ground Always Below 1 ohms
      CPUB (D19-4) - GND (C1) L-0 - W-B +B (CPUB) power supply Always 10 to 14 V
      BDR (D19-6) - GND (D19-1) B-R - W-B +B (BDR) power supply Always 10 to 14 V
      MPX1 (D17-22) - Body ground R-L - Body ground MPX line Always 10 k ohms or higher
      MPX2 (D17-30) - Body ground O - 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 MULTIPLEX NETWORK DOOR ECU FRONT RH 
    1. Disconnect the P9 and P11 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 6: Checking Multiplex Network Door ECU Front RH
      G02957480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      MULTIPLEX NETWORK DOOR ECU FRONT RH

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P11-1) - Body ground W - B - Body ground Ground Always Below 1 ohms
      CPUB (P11-4) - GND (P11-1) L - O - W - B +B (CPUB) power supply Always 10 to 14 V
      BDR (P11-6) - GND (P11-1) G - Y - W - B +B (BDR) power supply Always 10 to 14 V
      MPX1 (P9-22) - Body ground R - L - Body ground MPX line Always 10 k ohms or higher
      MPX2 (P9-30) - Body ground B - Y - 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 TIRE PRESSURE MONITOR RECEIVER ASSY 
    1. Disconnect the T9 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      Fig 7: Checking Tire Pressure Monitor Receiver Assy
      G02957481Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TIRE PRESSURE MONITOR RECEIVER ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T9-6) - Body ground W-B - Body ground Ground Always Below 1 ohms
      +B (T9-1) - GND (T9-6) B - W - B +B power supply Always 10 to 14 V
      MPX1 (T9-2) - Body ground L - O - Body ground MPX line Always 10 k ohms or higher
      MPX2 (T9-3) - Body ground R - 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.

  8. CHECK THEFT WARNING ECU ASSY 
    1. Disconnect the T7 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      Fig 8: Checking Theft Warning ECU Assy
      G02957482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      THEFT WARNING ECU ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T7-20) - Body ground W - B - Body ground Ground Always Below 1 ohms
      +B2 (T7-21) - GND (T7-20) B - 0 - W-B +B (+B2) power supply Always 10 to 14 V
      MPX (T7-13) - Body ground O - Body ground MPX line Always 10 k ohms or higher
      MPX2 (T7-33) - 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.

  9. CHECK TRANSPONDER KEY ECU ASSY 
    1. Disconnect the T13 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      Fig 9: Checking Transponder Key ECU Assy
      G02957483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TRANSPONDER KEY ECU ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T13-14) - Body ground W-B - Body ground Ground Always Below 1 ohms
      CPUB (T13-1) - GND (T13-14) L-O - W-B +B (CPUB) power supply Always 10 to 14 V
      MPX1 (T13-4) - Body ground BR - Body ground MPX line Always 10 k ohms or higher
      MPX2 (T13-5) - Body ground P-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 TURN SIGNAL SWITCH ASSY 
    1. Disconnect the C11 Switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      Fig 10: Checking Turn Signal Switch Assy
      G02957484Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TURN SIGNAL SWITCH ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E (C11-8) - Body ground W-B - Body ground Ground Always Below 1 ohms
      B (C11-1) - E (C11-8) L-B - W-B +B (B) power supply Always 10 to 14 V
      MPX1 (C11-9) - Body ground V - Body ground MPX line Always 10 k ohms or higher
      MPX2(C11-10) - Body ground B - 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 MULTIPLEX NETWORK FRONT LAMP ECU 
    1. Measure the voltage and resistance of the connectors.
      NOTE: Inspection should be started from the backside of the relay block with the multiplex network front lamp ECU connector being connected.
      Fig 11: Checking Multiplex Network Front Lamp ECU
      G02957485Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      MULTIPLEX NETWORK FRONT LAMP ECU

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (12) - Body ground W-B - Body ground Ground Always Below 1 ohms
      FMB3 (8) - GND (12) L-B - W-B +B (FMB3) power supply Always 10 to 14 V
      MPX1 (5) - Body ground B-R - Body ground MPX line Always 10 k ohms or higher
      MPX2 (6) - Body ground L-Y - 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 STEERING PAD SWITCH MODULATOR 
    1. Disconnect the C10 modulator connector.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 12: Checking Steering Pad Switch Modulator
      G02957486Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      STEERING PAD SWITCH MODULATOR

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ECC (C10-4) - Body ground BR - Body ground Ground Always Below 1 ohms
      +B (C10-2) - ECC (C10-4) B-O - BR
      • +B power supply
      • Ground
      		 Always 10 to 14 V
      MPX (C10-3) - Body ground G - 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 MULTIPLEX TILT & TELESCOPIC ECU 
    1. Disconnect the T8 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 13: Checking Multiplex Tilt & Telescopic ECU
      G02957487Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      MULTIPLEX TILT & TELESCOPIC ECU

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T8-4) - Body ground W-B - Body ground Ground Always Below 1 ohms
      ECUB (T8-5) - GND (T8-4) L-B - W-B +B (ECU) power supply Always 10 to 14 V
      +B (T8-10) - GND (T8-4) L-W - W-B +B power supply Always 10 to 14 V
      MPX1 (T8-7) - Body ground W-L - Body ground MPX line Always 10 k ohms or higher
      MPX2 (T8-6) - Body ground V - 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 COMBINATION METER ASSY 
    1. Disconnect the C8 and C9 meter connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 14: Checking Combination Meter Assy
      G02957488Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      COMBINATION METER ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E (C8-11) - Body ground BR - Body ground Ground Always Below 1 ohms
      B (C8-12) - E (C9-11) B- BR +B power supply Always 10 to 14 V
      MPX+ (C8-2) - Body ground Y - Body ground MPX line Always 10 k ohms or higher
      MPX- (C8-3) - Body ground L-O - 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.

  15. CHECK SKID CONTROL ECU ASSY 
    1. Disconnect the S5, S6, S7 and S8 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 15: Checking Skid Control ECU Assy
      G02957489Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      SKID CONTROL ECU ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND1 (S8-31) - Body ground W-B - Body ground Ground Always Below 1 ohms
      GND2 (S8-6) - Body ground W-B - Body ground Ground Always Below 1 ohms
      GND3 (S5-22) - Body ground W-B - Body ground Ground Always Below 1 ohms
      GND4 (S5-16) - Body ground W-B - Body ground Ground Always Below 1 ohms
      IG1 (S7-6) - GND1 (S8-31) R - W-B Ignition (IG1) power supply Ignition Switch ON 10 to 14 V
      IG2 (S6-6) - GND1 (S8-31) G-B - W-B Ignition (IG2) power supply Ignition Switch ON 10 to 14 V
      MPX1 (S6-17) - Body ground L-O - Body ground MPX line Always 10 k ohms or higher
      MPX2 (S7-3) - Body ground R-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.

  16. CHECK A/C AMPLIFIER ASSY 
    1. Disconnect the A9 and A10 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 16: Checking A/C Amplifier Assy
      G02957490Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      A/C AMPLIFIER ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (A10-14) - Body ground W-B - Body ground Ground Always Below 1 ohms
      +B (A10-8) - GND (A10-14) W-R - W-B +B power supply Always 10 to 14 V
      IG (A10-1) - GND (A10-14) V-W - W-B Ignition (IG+) power supply Ignition Switch ON 10 to 14 V
      MPX+ (A10-13) - Body ground L-O - Body ground MPX line Always 10 k ohms or higher
      MPX- (A9-10) - Body ground R-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.

  17. CHECK ECM 
    1. Measure the voltage and resistance of the wire harness side connectors.
      NOTE:
      • Inspection should be started from the backside of the ECM with the ECM connector being connected.
      • Inspect the power source voltage and the body ground before the operation inspection.
        Fig 17: Checking ECM
        G02957491Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        ECM

        Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
        E1 (E3-7) - Body ground BR - Body ground Ground Always Below 1 ohms
        +B (E6-6) - E1 (E6-7) B-W - BR +B power supply Ignition switch ON 10 to 14 V
        +B1 (E6-5) - E1 (E6-7) B-W - BR +B (B1) power supply Ignition switch ON 10 to 14 V
        MPX1 (E5-21) - Body ground Y - Body ground MPX line Always 10 k ohms or higher
        MPX2 (E5-20) - Body ground L-O - 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 SLIDING ROOF CONTROL ECU ASSY 
    1. Disconnect the S18 and S19 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 18: Checking Sliding Roof Control ECU Assy
      G02957492Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      SLIDING ROOF CONTROL ECU ASSY

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E1 (S18-6) - Body ground W-B - Body ground Ground Always Below 1 ohms
      E2 (S19-9) - Body ground W-B - Body ground Ground Always Below 1 ohms
      E3 (S19-10) - Body ground W-B - Body ground Ground Always Below 1 ohms
      E4 (S19-11) - Body ground W-B - Body ground Ground Always Below 1 ohms
      E5 (S18-5) - Body ground W-B - Body ground Ground Always Below 1 ohms
      SGND (S18-19) - Body ground BR - Body ground Ground Always Below 1 ohms
      CPUB (S19-8) - E1 (S18-6) L-0 - W-B
      • +B (CPUB) power supply
      • GND
      		 Always 10 to 14 V
      MPX1 (S18-7) - Body ground B-Y - Body ground MPX line Always 10 k ohms or higher
      MPX2 (S18-1) - Body ground G - 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.

  19. CHECK POSITION CONTROL ECU ASSY (DRIVER SEAT ECU) 
    1. Disconnect the P21 and P22 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 19: Checking Position Control ECU Assy (Driver Seat ECU)
      G02957493Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      POSITION CONTROL ECU ASSY (DRIVER SEAT ECU)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P22-7) - Body ground W-B - Body ground Ground Always Below 1 ohms
      +B (P22-8) - GND (P22-7) L-W - W-B +B power supply Always 10 to 14 V
      SYSB (P21-9) - GND (P22-7) L-O - W-B +B (SYSB) power supply Always 10 to 14 V
      MPX1 (P21-10) - Body ground P-L - Body ground MPX line Always 10 k ohms or higher
      MPX2 (P21-11) - Body ground R-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.

  20. CHECK POSITION CONTROL ECU ASSY (PASSENGER SEAT ECU) 
    1. Disconnect the P23 and P24 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      Fig 20: Checking Position Control ECU Assy (Passenger Seat ECU)
      G02957494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      POSITION CONTROL ECU ASSY (PASSENGER SEAT ECU)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P24-7) - Body ground W-B - Body ground Ground Always Below 1 ohms
      +B (P24-8) - GND (P22-7) L-W - W-B +B power supply Always 10 to 14 V
      SYSB (P23-9) - GND (P24-7) L-O - W-B +B (SYSB) power supply Always 10 to 14 V
      MPX1 (P23-10) - Body ground G - Body ground MPX line Always 10 k ohms or higher
      MPX2 (P23-11) - Body ground P-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.

  21. CHECK AIRBAG ECU (See  TERMINALS OF ECU  ) 
  22. CHECK RADIO RECEIVER AMPLIFIER ASSY (See  TERMINALS OF ECU  ) 
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