LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2019 >> Prius XLE AWD-e >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Lin Communication System - Diagnostics - Introduction >> Lin Communication System >> Terminals Of Lin Communication System Ecu [11/2015 - 12/2018] >> Terminals Of Ecu [11/2015 - 12/2018]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Terminals Of Ecu [11/2015 - 12/2018]

  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    GTY545033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the MB main body ECU (multiplex network body ECU) connector.

      Refer to REMOVAL [11/2015 - 12/2018]

    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.

      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 - Auxiliary battery power supply Power switch off 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
    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.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      3H-25 - Body ground G - Body ground LIN communication line Power switch on (IG) Pulse generation
      3D-17 - Body ground GR - Body ground LIN communication line Power switch on (IG) Pulse generation
  2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) 
    GTY566675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the J2 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
      J2-2 (B) - Body ground B - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      J2-1 (GND) - Body ground W - Body ground Ground Always Below 1 Ω
    3. Reconnect the J2 power window regulator motor assembly (for driver door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J2-9 (LIN) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
  3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Door) 
    GTY566673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the I2 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
      I2-2 (B) - Body ground B - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      I2-1 (GND) - Body ground W - Body ground Ground Always Below 1 Ω
    3. Reconnect the I2 power window regulator motor assembly (for driver door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I2-9 (LIN) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
  4. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH Door) 
    GTY565656Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K2 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
      K2-2 (B) - Body ground B - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      K2-1 (GND) - Body ground W - Body ground Ground Always Below 1 Ω
    3. Reconnect the K2 power window regulator motor assembly (for rear RH door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K2-9 (LIN) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
  5. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door) 
    GTY565655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L3 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
      L3-2 (B) - Body ground B - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      L3-1 (GND) - Body ground W - Body ground Ground Always Below 1 Ω
    3. Reconnect the L3 power window regulator motor assembly (for rear LH door) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L3-9 (LIN) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
  6. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 
    GTY548027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the J7 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
      J7-11 (B) - Body ground B - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      J7-12 (GND) - Body ground W - Body ground Ground Always Below 1 Ω
    3. Reconnect the J7 multiplex network master switch assembly connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J7-17 (LIN1) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
      J7-16 (LIN2) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
  7. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (w/ Sliding Roof System) 
    GTY583819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the O10 sliding roof ECU (sliding roof drive gear sub-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
      O10-1 (B) - Body ground L - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      O10-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
    3. Reconnect the O10 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O10-7 (MPX1) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
  8. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY602666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F1 certification ECU (smart key ECU 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
      F1-18 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F1-4 (+B) - Body ground GR - Body ground +B power supply Power switch off 11 to 14 V
    3. Reconnect the F1 certification ECU (smart key ECU assembly) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F1-13 (LIN) - Body ground B - Body ground LIN communication line Power switch on (IG) Pulse generation
  9. CHECK HYBRID VEHICLE CONTROL ECU 
    GTY596192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F2 and F3 hybrid vehicle control ECU connectors.
    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
      F3-3 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-34 (E12) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F3-27 (BATT) - Body ground GR - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
    3. Reconnect the F2 and F3 hybrid vehicle control ECU connectors.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F3-31 (LIN) - Body ground L - Body ground LIN communication line Power switch on (IG) Pulse generation
  10. CHECK ID CODE BOX (IMMOBILIZER CODE ECU) 
    GTY588768Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F19 ID code box (immobilizer code ECU) 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
      F19-5 (GND) - Body ground W - Body ground Ground Always Below 1 Ω
      F19-1 (+B) - Body ground GR - Body ground +B power supply Power switch off 11 to 14 V
    3. Reconnect the F19 ID code box (immobilizer code ECU) connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F19-2 (LIN1) - Body ground SB - Body ground LIN communication line Power switch on (IG) Pulse generation
scientia non olet · About LEMON Manuals