Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Diagnostics - Introduction) >> Power Window Control System >> Terminals Of Ecu [10/2018 - ] >> Terminals Of Ecu [10/2018 - ]

Terminals Of Ecu [10/2018 - ]

  1. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 
    GTY820833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K7 multiplex network master switch assembly connector.
    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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K7-11 (B) - K7-12 (GND) P - W-B Power supply Ignition switch off 11 to 14 V
      K7-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    3. Reconnect the K7 multiplex network master switch assembly connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K7-15 (DOWN) - K7-12 (GND) R - W-B Power window motor DOWN output Ignition switch ON, driver door power window regulator switch not pushed or pulled 11 to 14 V
      Ignition switch ON, driver door power window moving, driver door power window regulator switch pushed halfway down (Manual operation) Below 1 V
      K7-20 (UP) - K7-12 (GND) G - W-B Power window motor UP output Ignition switch ON, driver door power window regulator switch not pushed or pulled 11 to 14 V
      Ignition switch ON, driver door power window moving, driver door power window regulator switch pulled halfway up (Manual operation) Below 1 V
  2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR DRIVER DOOR) 
    GTY476500Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K2 power window regulator motor assembly (for driver door) connector.
    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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      K2-2 (B) - Body ground B - Body ground*1
      L - Body ground*2      		 Power supply Ignition switch off 11 to 14 V
      1. *1: w/ Seat Position Memory
      2. *2: w/o Seat Position Memory
    3. Reconnect the K2 power window regulator motor assembly (for driver door) connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K2-7 (DWN1) - K2-1 (E) R - W-B Power window motor DOWN input Ignition switch ON, multiplex network master switch assembly (driver door power window regulator switch) not pushed or pulled 11 to 14 V
      Ignition switch ON, driver door power window moving, multiplex network master switch assembly (driver door power window regulator switch) pushed halfway down (Manual operation) Below 1 V
      Ignition switch ON, driver door power window fully closed 11 to 14 V
      Ignition switch ON, driver door power window moving, multiplex network master switch assembly (driver door power window regulator switch) fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, driver door power window fully open 11 to 14 V
      K2-10 (UP1) - K2-1 (E) G - W-B Power window motor UP input Ignition switch ON, multiplex network master switch assembly (driver door power window regulator switch) not pushed or pulled 11 to 14 V
      Ignition switch ON, driver door power window moving, multiplex network master switch assembly (driver door power window regulator switch) pulled halfway up (Manual operation) Below 1 V
      Ignition switch ON, multiplex network master switch assembly (driver door power window regulator switch) fully open 11 to 14 V
      Ignition switch ON, driver door power window moving, multiplex network master switch assembly (driver door power window regulator switch) fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, driver door power window fully closed 11 to 14 V
  3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR FRONT PASSENGER DOOR) 
    GTY476501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the J2 power window regulator motor assembly (for front passenger door) connector.
    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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      J2-2 (B) - Body ground B - Body ground*1
      L - Body ground*2      		 Power supply Ignition switch off 11 to 14 V
      1. *1: w/ Seat Position Memory
      2. *2: w/o Seat Position Memory
    3. Reconnect the J2 power window regulator motor assembly (for front passenger door) connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J2-4 (AUTO) - J2-1 (E) B - W-B Power window motor AUTO UP input Ignition switch ON, front passenger door power window fully open 11 to 14 V
      Ignition switch ON, front passenger door power window moving, power window regulator switch assembly fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, front passenger door power window fully closed 11 to 14 V
      Power window motor AUTO DOWN input Ignition switch ON, front passenger door power window fully closed 11 to 14 V
      Ignition switch ON, front passenger door power window moving, power window regulator switch assembly fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, front passenger door power window fully open 11 to 14 V
      J2-5 (LED) - J2-1 (E) SB - W-B LED illumination signal Headlight dimmer switch is in the tail position 11 to 14 V
      Headlight dimmer switch is not in the tail position Below 1 V
      J2-7 (DWN1) - J2-1 (E) R - W-B Power window motor DOWN input Ignition switch ON, power window regulator switch assembly not pushed or pulled 11 to 14 V
      Ignition switch ON, front passenger door power window moving, power window regulator switch assembly pushed halfway down (Manual operation) Below 1 V
      Ignition switch ON, front passenger door power window fully closed 11 to 14 V
      Ignition switch ON, front passenger door power window moving, power window regulator switch assembly fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, front passenger door power window fully open 11 to 14 V
      J2-10 (UP1) - J2-1 (E) G - W-B Power window motor UP input Ignition switch ON, power window regulator switch assembly not pushed or pulled 11 to 14 V
      Ignition switch ON, front passenger door power window moving, power window regulator switch assembly pulled halfway up (Manual operation) Below 1 V
      Ignition switch ON, front passenger door power window fully open 11 to 14 V
      Ignition switch ON, front passenger door power window moving, power window regulator switch assembly fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, front passenger door power window fully closed 11 to 14 V
  4. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR REAR LH DOOR) 
    GTY817501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M2 power window regulator motor assembly (for rear LH door) connector.
    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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M2-2 (B) - Body ground W - Body ground Power supply Ignition switch off 11 to 14 V
    3. Reconnect the M2 power window regulator motor assembly (for rear LH door) connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-4 (AUTO) - M2-1 (E) B - W-B Power window motor AUTO UP input Ignition switch ON, rear LH door power window fully open 11 to 14 V
      Ignition switch ON, rear LH door power window moving, rear power window regulator switch assembly (for LH door) fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, rear LH door power window fully closed 11 to 14 V
      Power window motor AUTO DOWN input Ignition switch ON, rear LH door power window fully closed 11 to 14 V
      Ignition switch ON, rear LH door power window moving, rear power window regulator switch assembly (for LH door) fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, rear LH door power window fully open 11 to 14 V
      M2-5 (LED) - M2-1 (E) SB - W-B LED illumination signal Headlight dimmer switch is in the tail position 11 to 14 V
      Headlight dimmer switch is not in the tail position Below 1 V
      M2-7 (DWN1) - M2-1 (E) L - W-B Power window motor DOWN input Ignition switch ON, rear power window regulator switch assembly (for LH door) not pushed or pulled 11 to 14 V
      Ignition switch ON, rear LH door power window moving, rear power window regulator switch assembly (for LH door) pushed halfway down (Manual operation) Below 1 V
      Ignition switch ON, rear LH door power window fully closed 11 to 14 V
      Ignition switch ON, rear LH door power window moving, rear power window regulator switch assembly (for LH door) fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, rear LH door power window fully open 11 to 14 V
      M2-10 (UP1) - M2-1 (E) G - W-B Power window motor UP input Ignition switch ON, rear power window regulator switch assembly (for LH door) not pushed or pulled 11 to 14 V
      Ignition switch ON, rear LH door power window moving, rear power window regulator switch assembly (for LH door) pulled halfway up (Manual operation) Below 1 V
      Ignition switch ON, rear LH door power window fully open 11 to 14 V
      Ignition switch ON, rear LH door power window moving, rear power window regulator switch assembly (for LH door) fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, rear LH door power window fully closed 11 to 14 V
  5. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR REAR RH DOOR) 
    GTY804365Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L2 power window regulator motor assembly (for rear RH door) connector.
    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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L2-2 (B) - Body ground W - Body ground Power supply Ignition switch off 11 to 14 V
    3. Reconnect the L2 power window regulator motor assembly (for rear RH door) connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L2-4 (AUTO) - L2-1 (E) B - W-B Power window motor AUTO UP input Ignition switch ON, rear RH door power window fully open 11 to 14 V
      Ignition switch ON, rear RH door power window moving, rear power window regulator switch assembly (for RH door) fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, rear RH door power window fully closed 11 to 14 V
      Power window motor AUTO DOWN input Ignition switch ON, rear RH door power window fully closed 11 to 14 V
      Ignition switch ON, rear RH door power window moving, rear power window regulator switch assembly (for RH door) fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, rear RH door power window fully open 11 to 14 V
      L2-5 (LED) - L2-1 (E) SB - W-B LED illumination signal Headlight dimmer switch is in the tail position 11 to 14 V
      Headlight dimmer switch is not in the tail position Below 1 V
      L2-7 (DWN1) - L2-1 (E) L - W-B Power window motor DOWN input Ignition switch ON, rear power window regulator switch assembly (for RH door) not pushed or pulled 11 to 14 V
      Ignition switch ON, rear RH door power window moving, rear power window regulator switch assembly (for RH door) pushed halfway down (Manual operation) Below 1 V
      Ignition switch ON, rear RH door power window fully closed 11 to 14 V
      Ignition switch ON, rear RH door power window moving, rear power window regulator switch assembly (for RH door) fully pushed down (Auto operation) Below 1 V
      Ignition switch ON, rear RH door power window fully open 11 to 14 V
      L2-10 (UP1) - L2-1 (E) G - W-B Power window motor UP input Ignition switch ON, rear power window regulator switch assembly (for RH door) not pushed or pulled 11 to 14 V
      Ignition switch ON, rear RH door power window moving, rear power window regulator switch assembly (for RH door) pulled halfway up (Manual operation) Below 1 V
      Ignition switch ON, rear RH door power window fully open 11 to 14 V
      Ignition switch ON, rear RH door power window moving, rear power window regulator switch assembly (for RH door) fully pulled up (Auto operation) Below 1 V
      Ignition switch ON, rear RH door power window fully closed 11 to 14 V
  6. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    GTY819195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]

    2. Reconnect the instrument panel junction block assembly connectors.
    3. 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 connected.

      Terminal No. (Symbol) 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 Ignition switch off 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
    4. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

      Refer to INSTALLATION [10/2018 - ]

    5. Measure the voltage and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F40-1 (FLCY) - Body ground V - Body ground Front door courtesy light switch (for LH) input Front door LH open Below 1 V
      Front door LH closed 11 to 14 V or pulse output (maximum 14 V)*1
      F40-6 (FRCY) - Body ground R - Body ground Front door courtesy light switch (for RH) input Front door RH open Below 1 V
      Front door RH closed 11 to 14 V or pulse output (maximum 14 V)*1
      F39-17 (UL3) - Body ground G - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock Below 1 V
      Driver door key cylinder not turned Pulse generation
      F39-18 (L2) - Body ground P - Body ground Driver door key-linked lock input Driver door key cylinder turned to lock Below 1 V
      Driver door key cylinder not turned Pulse generation
      1. *1: Differs depending on the vehicle model
scientia non olet · About Mike's Workshop Manuals