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Terminals Of Ecu [04/2013 - 09/2022]

  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. Disconnect the MB main body ECU (multiplex network body ECU) connector.
      Fig 1: Identifying Instrument Panel Junction Block Assembly And Main Body ECU Connector Terminal Identification (Multiplex Network Body ECU) (1 Of 2)
      GTY456165Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Main Body ECU (Multiplex Network Body ECU) with 3 Connectors - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a 3 Connectors - -
      Fig 2: Identifying Instrument Panel Junction Block Assembly And Main Body ECU Connector Terminal Identification (Multiplex Network Body ECU) (2 Of 2)
      GTY466607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a 2 Connectors - -
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connectors disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      MB-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Engine switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Engine switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Engine switch off Below 1 V

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

    3. Reconnect the MB main body ECU (multiplex network body ECU) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      4B-21 - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may be malfunctioning.

  2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) 
    1. Disconnect the N17 power window regulator motor assembly (for driver door) connector.
      Fig 3: Identifying Power Window Regulator Motor Assembly Connector Terminal Identification (For Driver Door)
      GTY470954Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N17-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V
      N17-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the N17 power window regulator motor assembly (for driver door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N17-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the power window regulator motor assembly (for driver door) may be malfunctioning.

  3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Door) 
    1. Disconnect the N2 power window regulator motor assembly (for front passenger door) connector.
      Fig 4: Identifying Power Window Regulator Motor Assembly (For Front Passenger Door) Connector Terminal Identification
      GTY467264Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N2-2 (B) - Body ground Y - Body ground Battery power supply Always 11 to 14 V
      N2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the N2 power window regulator motor assembly (for front passenger door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N2-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the power window regulator motor assembly (for front passenger door) may be malfunctioning.

  4. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH Door) 
    1. Disconnect the O2 power window regulator motor assembly (for rear RH door) connector.
      Fig 5: Power Window Regulator Motor Assembly (For Rear RH door) Connector End View
      GTY511171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O2-2 (B) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      O2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the O2 power window regulator motor assembly (for rear RH door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O2-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the power window regulator motor assembly (for rear RH door) may be malfunctioning.

  5. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door) 
    1. Disconnect the O7 power window regulator motor assembly (for rear LH door) connector.
      Fig 6: Power Window Regulator Motor Assembly (For Rear LH Door) Connector End View
      GTY511172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O7-2 (B) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      O7-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the O7 power window regulator motor assembly (for rear LH door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O7-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the power window regulator motor assembly (for rear LH door) may be malfunctioning.

  6. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (w/o Seat Position Memory System) 
    1. Disconnect the N27 multiplex network master switch assembly connector.
      Fig 7: Identifying Multiplex Network Master Switch Assembly Connector Terminal Identification (Without Seat Position Memory System)
      GTY465211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N27-21 (B) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      N27-17 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the N27 multiplex network master switch assembly connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N27-7 (LIN1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the multiplex network master switch assembly may be malfunctioning.

  7. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (w/ Seat Position Memory System) 
    1. Disconnect the N18 multiplex network master switch assembly connector.
      Fig 8: Identifying Multiplex Network Master Switch Assembly Connector Terminal Identification (With Seat Position Memory System)
      GTY465894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N18-11 (B) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      N18-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the N18 multiplex network master switch assembly connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N18-17 (LIN1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the multiplex network master switch assembly may be malfunctioning.

  8. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Disconnect the K6 certification ECU (smart key ECU assembly) connector.
      Fig 9: Identifying Certification ECU Connector Terminal Identification (Smart Key ECU Assembly)
      GTY458941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K6-11 (E) - Body ground BR - Body ground Ground Always Below 1 Ω
      K6-10 (+B) - Body ground BE - Body ground +B power supply Always 11 to 14 V

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

    3. Reconnect the K6 certification ECU (smart key ECU assembly) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K6-6 (LIN) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.

  9. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) 
    1. Disconnect the K28 steering lock ECU (steering lock actuator assembly) connector.
      Fig 10: Identifying Steering Lock ECU Connector Terminal Identification (Steering Lock Actuator Assembly)
      GTY460936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K28-1 (GND) - Body ground W-B Body ground Ground Always Below 1 Ω
      K28-7 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V

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

    3. Reconnect the K28 steering lock ECU (steering lock actuator assembly) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K28-5 (LIN) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the steering lock ECU (steering lock actuator assembly) may be malfunctioning.

  10. CHECK ID CODE BOX (IMMOBILISER CODE ECU) 
    1. Disconnect the K83 ID code box (immobiliser code ECU) connector.
      Fig 11: Identifying ID Code Box Connector Terminal Identification (Immobilizer Code ECU)
      GTY464787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K83-5 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      K83-1 (+B) - Body ground G - Body ground +B power supply Always 11 to 14 V

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

    3. Reconnect the K83 ID code box (immobiliser code ECU) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      K83-2 (LIN1) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the ID code box (immobiliser code ECU) may be malfunctioning.

  11. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (w/ Sliding Roof System) 
    1. Disconnect the S5 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
      Fig 12: Sliding Roof ECU (Sliding Roof Drive Gear Sub-Assembly) Connector End View
      GTY440258Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      S5-8 (B) - Body ground V - Body ground Battery power supply Always 11 to 14 V
      S5-12 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the S5 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      S5-11 (MPX1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

      If the result is not as specified, the sliding roof ECU (sliding roof drive gear sub-assembly) may be malfunctioning.

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