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Terminals Of Ecu

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    Fig 1: Identifying Certification ECU (Smart Key ECU Assembly) Connector Terminals
    GTY383257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A28 and D64 certification ECU (smart key ECU assembly) 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 connector disconnected.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      A28-11 (E) - Body ground - W - Body ground Ground Always Below 1 Ω -
      A28-2 (+B) - A28-11 (E) Input W - W +B power supply Always 11 to 14 V -
      D64-5 (IG) - Body ground Output B - Body ground IG2 signal 20°C (68°F) Approximately 302.97 Ω IG2 Relay Monitor(Outside)
      A28-10 (CUTB) - A28-11 (E) Input L - W Stand-by power* Always 11 to 14 V -
      • *: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of radio waves every 0.25 seconds that form the detection area stops).

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

    3. Reconnect the A28 and D64 certification ECU (smart key ECU assembly) connectors.
    4. Measure the voltage and pulses according to the value(s) in the table below.
      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      D64-5 (IG) - A28-11 (E) Input B - W IG power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V Ignition Switch
      D64-12 (CLG1) - A28-11 (E) Output V - W Output to driver door electrical key antenna
      (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. Electrical key transmitter sub-assembly brought inside detection area*1
      6. All doors locked through wireless operation
      		 Pulse generation (See waveform 1) Over Head + Driver Side (key diagnostic mode)
      Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. Electrical key transmitter sub-assembly brought outside detection area*2
      6. All doors locked through wireless operation
      		 Pulse generation (See waveform 2) Over Head + Driver Side (key diagnostic mode)
      D64-13 (CG1B) - A28-11 (E) Output LG - W Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. All doors locked through wireless operation
      		 Pulse generation (See waveform 2) Over Head + Driver Side (key diagnostic mode)
      D64-11 (CLG2) - A28-11 (E)*4 Output Y - W Output to front passenger door electrical key antenna
      (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. Electrical key transmitter sub-assembly brought inside detection area*1
      6. All doors locked through wireless operation
      		 Pulse generation (See waveform 1) Over Head + Passenger Side (key diagnostic mode)
      Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. Electrical key transmitter sub-assembly brought outside detection area*2
      6. All doors locked through wireless operation
      		 Pulse generation (See waveform 2) Over Head + Passenger Side (key diagnostic mode)
      D64-10 (CG2B) - A28-11 (E)*4 Output L - W Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. All doors locked through wireless operation
      		 Pulse generation (See waveform 2) Over Head + Passenger Side (key diagnostic mode)
      D64-3 (CLG5) - A28-11 (E) Output R - W Output to NO. 1 indoor electrical key antenna assembly (front floor) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Door is open
      4. Door is closed
      5. Within 30 seconds
      		 Pulse generation (See waveform 3) Over Head + Front Room (key diagnostic mode)
      D64-2 (CG5B) - A28-11 (E) Output W - W Output to NO. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Door is open
      4. Door is closed
      5. Within 30 seconds
      		 Pulse generation (See waveform 3) Over Head + Front Room (key diagnostic mode)
      D64-20 (TSW1) - A28-11 (E) Input BE - W Driver door lock sensor signal input
      (Sends signal from door lock sensor on front door outside handle assembly to certification ECU (smart key ECU assembly). Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 40 ms. from terminal TSW. When door lock sensor is touched, the pulse is grounded.      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Driver door lock sensor not touched → touched
      		 Pulse generation (See waveform 6) D-Door Trigger Switch
      D64-8 (TSW2) - A28-11 (E)*4 Input V - W Front passenger door lock sensor signal input
      (Sends signal from door lock sensor on front door outside handle assembly to certification ECU (smart key ECU assembly). Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 40 ms. from terminal TSW. When door lock sensor is touched, the pulse is grounded.      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Front passenger door lock sensor not touched → touched
      		 Pulse generation (See waveform 6) P-Door Trigger Switch
      D64-22 (SEN1) - A28-11 (E) Input SB - W Driver door unlock sensor signal input
      (when system is in unlock standby mode and touch sensor is touched, door electrical key antenna sends touch sensor input signal (sensing) to certification ECU (smart key ECU assembly)      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors locked
      4. Electrical key transmitter sub-assembly not sufficiently close to vehicle
      5. Driver door unlock sensor not touched → touched
      		 Pulse generation (See waveform 6) D-Door Touch Sensor
      D64-23 (SEN2) - A28-11 (E)*4 Input GR - W Front passenger door unlock sensor signal input
      (when system is in unlock standby mode and touch sensor is touched, door electrical key antenna sends touch sensor input signal (sensing) to certification ECU (smart key ECU assembly)      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors locked
      4. Electrical key transmitter sub-assembly not sufficiently close to vehicle
      5. Front passenger door unlock sensor not touched → touched
      		 Pulse generation (See waveform 6) P-Door Touch Sensor
      D65-27 (TSW5) - A28-11 (E) Input G - W Luggage electrical key switch signal input Luggage electrical key switch off → on Pulse generation (See waveform 6) Tr/B-Door Unlock SW
      D65-11 (CLG6) - A28-11 (E) Output W - W Output to NO. 2 indoor electrical key antenna assembly (rear floor) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Door is open
      4. Door is closed
      5. Within 30 seconds
      		 Pulse generation (See waveform 3) Over Head + Rear Room (key diagnostic mode)
      D65-10 (CG6B) - A28-11 (E) Output B - W Output to NO. 2 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CLG6 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Door is open
      4. Door is closed
      5. Within 30 seconds
      		 Pulse generation (See waveform 3) Over Head + Rear Room (key diagnostic mode)
      D65-9 (CLG7) - A28-11 (E) Output R - W Output to NO. 2 indoor electrical key antenna assembly (inside luggage compartment) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. All doors closed
      4. Driver door lock sensor not touched → touched
      		 Pulse generation (See waveform 4) Over Head + Luggage (inside) (key diagnostic mode)
      D65-8 (CG7B) - A28-11 (E) Output Y - W Output to NO. 2 indoor electrical key antenna assembly (inside luggage compartment) (terminal on opposite side of component from CLG7 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. All doors closed
      4. Driver door lock sensor not touched → touched
      		 Pulse generation (See waveform 4) Over Head + Luggage (inside) (key diagnostic mode)
      D64-19 (POS1) - A28-11 (E) Output P - W Driver door unlock sensor power source (12 V (drops when engine switch turned on (IG) Engine switch off → on (IG) 9 to 14 V → Below 2 V -
      D64-21 (POS2) - A28-11 (E)*4 Output B - W Front passenger door unlock sensor power source (12 V (drops when engine switch turned on (IG) Engine switch off → on (IG) 9 to 14 V → Below 2 V -
      D65-5 (RCO) - A28-11 (E) Output BR - W Output to door control and tire pressure monitoring system receiver assembly
      (Power supply for door control and tire pressure monitoring system receiver assembly. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating)      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. Electrical key transmitter sub-assembly brought outside detection area*2 but kept inside wireless function operational area*3
      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation (See waveform 7) -
      D65-17 (RDAM) - A28-11 (E) Input Y - W Door control and tire pressure monitoring system receiver assembly verifies data received from electrical key transmitter sub-assembly. Door control and tire pressure monitoring system receiver assembly sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly) Procedure:
      1. Engine switch off
      2. All doors locked
      3. Electrical key transmitter sub-assembly brought outside detection area*2 but kept inside wireless function operational area*3
      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation (See waveform 8) -
      D65-6 (CSEL) - A28-11 (E) Output BE - W Communication channel switching circuit Procedure:
      1. Engine switch off
      2. All doors closed
      		 Below 1 V → 4.5 to 6 V → Below 1 V Key diagnostic mode
      D65-2 (CLG8) - A28-11 (E) Output V - W Output to electrical key antenna (outside luggage) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Luggage electrical key switch off → on
      		 Pulse generation (See waveform 5) Over Head + Luggage
      or
      Luggage + Luggage (key diagnostic mode)
      D65-1 (CG8B) - A28-11 (E) Output P - W Output to electrical key antenna (outside luggage) (terminal on opposite side of component from CLG8 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Luggage electrical key switch off → on
      		 Pulse generation (See waveform 5) Over Head + Luggage
      or
      Luggage + Luggage (key diagnostic mode)
      • *1: For details about the areas that are inside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK .
      • *2: For details about the areas that are outside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK .
      • *3: For details about the areas that are inside the wireless function operational area, refer to Operation Check. Refer to OPERATION CHECK .
      • *4: w/ Front Passenger Door Entry Function
    5. Using an oscilloscope, check waveform 1.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 2: Identifying Waveform 1
      GTY265256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Tester Connection
      • D64-12 (CLG1) - A28-11 (E)
      • D64-11 (CLG2) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. Electrical key transmitter sub-assembly brought inside detection area*
      6. All doors locked through wireless operation
      • *: For details about the areas that are inside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK .
    6. Using an oscilloscope, check waveform 2.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 3: Identifying Waveform 2
      GTY258883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Tester Connection
      • D64-12 (CLG1) - A28-11 (E)
      • D64-11 (CLG2) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. Electrical key transmitter sub-assembly brought outside detection area*
      6. All doors locked through wireless operation
      • *: For details about the areas that are outside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK .
      WAVEFORM 2 (REFERENCE)

      Item Content
      Tester Connection
      • D64-13 (CG1B) - A28-11 (E)
      • D64-10 (CG2B) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Electrical key transmitter sub-assembly not inside vehicle
      5. All doors locked through wireless operation
    7. Using an oscilloscope, check waveform 3.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 4: Identifying Waveform 3
      GTY262798Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Door open
      *b After approximately 30 seconds from when the door is closed
      WAVEFORM 3 (REFERENCE)

      Item Content
      Tester Connection
      • D64-3 (CLG5) - A28-11 (E)
      • D64-2 (CG5B) - A28-11 (E)
      • D65-11 (CLG6) - A28-11 (E)
      • D65-10 (CG6B) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Door is open
      4. Door is closed
      5. Within 30 seconds
    8. Using an oscilloscope, check waveform 4.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 5: Identifying Waveform 4
      GTY319039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Before driver door lock sensor touched
      *b After driver door lock sensor touched
      WAVEFORM 4 (REFERENCE)

      Item Content
      Tester Connection
      • D65-9 (CLG7) - A28-11 (E)
      • D65-8 (CG7B) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. All doors closed
      4. Driver door lock sensor not touched → touched
    9. Using an oscilloscope, check waveform 5.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 6: Identifying Waveform 5
      GTY315145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Engine switch off, all doors closed and luggage electrical key switch off → on
      WAVEFORM 5 (REFERENCE)

      Item Content
      Tester Connection
      • D65-2 (CLG8) - A28-11 (E)
      • D65-1 (CG8B) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Luggage electrical key switch off → on
    10. Using an oscilloscope, check waveform 6.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 7: Identifying Waveform 6
      GTY279494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a In actuality, sampling is being performed
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection D64-20 (TSW1) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Driver door lock sensor not touched → touched
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection D64-8 (TSW2) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Front passenger door lock sensor not touched → touched
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection D64-22 (SEN1) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors locked
      4. Electrical key transmitter sub-assembly not sufficiently close to vehicle
      5. Driver door unlock sensor not touched → touched
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection D64-23 (SEN2) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors locked
      4. Electrical key transmitter sub-assembly not sufficiently close to vehicle
      5. Front passenger door unlock sensor not touched → touched
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection D65-27 (TSW5) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV
      Condition Luggage electrical key switch off → on
    11. Using an oscilloscope, check waveform 7.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 8: Identifying Waveform 7
      GTY278665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed
      WAVEFORM 7 (REFERENCE)

      Item Content
      Tester Connection D65-5 (RCO) - A28-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2
      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK .
      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check. Refer to OPERATION CHECK .
    12. Using an oscilloscope, check waveform 8.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 9: Identifying Waveform 8
      GTY277201Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed
      WAVEFORM 8 (REFERENCE)

      Item Content
      Tester Connection D65-17 (RDAM) - A28-11 (E)
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. All doors locked
      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2
      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK .
      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check. Refer to OPERATION CHECK .
  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    Fig 10: Identifying Instrument Panel Junction Block Assembly & Main Body ECU (Multiplex Network Body ECU) Connector Terminals (1 Of 2)
    GTY374741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *A Main body ECU (multiplex network body ECU) with 2 connectors - -
    *1 Main body ECU (multiplex network body ECU) *2 2 connectors
    Fig 11: Identifying Instrument Panel Junction Block Assembly & Main Body ECU (Multiplex Network Body ECU) Connector Terminals (2 Of 2)
    GTY366494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *A Main body ECU (multiplex network body ECU) with 3 connectors - -
    *1 Main body ECU (multiplex network body ECU) *2 3 connectors
    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
    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 Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      MB-11 (GND1) - Body ground - - Ground Always Below 1 Ω -
      D5-3 (GND2) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      3D-27 (BECU) - Body ground Input V - Body ground Battery power supply (for CPU) Always 11 to 14 V -
      MB-31 (ALTB) - Body ground Input - Battery power supply (for indicator) Always 11 to 14 V -
      MB-29 (ACC) - Body ground Input - ACC power supply Engine switch on (ACC) 11 to 14 V ACC SW
      MB-32 (IG) - Body ground Input - Engine switch power supply Engine switch on (IG) 11 to 14 V IG SW

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

    3. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      3C-15 (FLCY) - Body ground Input L - Body ground Front door LH courtesy light switch input Front door LH open Below 1 V FL Door Courtesy SW
      Front door LH closed 11 to 14 V
      D6-19 (FRCY) - Body ground Input R - Body ground Front door RH courtesy light switch input Front door RH open Below 1 V FR Door Courtesy SW
      Front door RH closed 11 to 14 V
      D6-1 (LCTY) - Body ground Input L - Body ground Rear door LH courtesy light switch input Rear door LH open Below 1 V RL Door Courtesy SW
      Rear door LH closed Pulse generation
      D6-6 (RCTY) - Body ground Input B - Body ground Rear door RH courtesy light switch input Rear door RH open Below 1 V RR Door Courtesy SW
      Rear door RH closed Pulse generation
      D6-9 (L1) - Body ground Input P - Body ground Front passenger door control switch lock input Door control switch on Below 1 V -
      Door control switch off Pulse generation (See waveform 1)
      D6-10 (UL1) - Body ground Input L - Body ground Front passenger door control switch unlock input Door control switch on Below 1 V -
      Door control switch off Pulse generation (See waveform 1)
      3C-9 (LGCY) - Body ground Input W - Body ground Luggage door courtesy light switch input Luggage compartment door open Below 1 V Luggage Courtesy SW
      Engine switch off, all doors closed and luggage compartment door closed 11 to 14 V
      D6-11 (L2) - Body ground Input R - Body ground Driver door key-linked lock input Driver door key cylinder in lock position Below 1 V -
      Engine switch off, all doors closed and driver door key cylinder in neutral position Pulse generation (See waveform 2)
      D6-24 (UL3) - Body ground Input G - Body ground Driver door key-linked unlock input Driver door key cylinder in unlock position Below 1 V -
      Engine switch off, all doors closed and driver door key cylinder in neutral position Pulse generation (See waveform 3)
      3B-1 (ACT+) - Body ground Output L - Body ground Door lock motor lock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Lock side of driver door control switch pushed or driver door key cylinder in lock position 11 to 14 V
      3B-2 (ACT+) - Body ground Output B - Body ground Door lock motor lock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Lock side of driver door control switch pushed or driver door key cylinder in lock position 11 to 14 V
      3B-3 (ACT+) - Body ground Output BR - Body ground Door lock motor lock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Lock side of driver door control switch pushed or driver door key cylinder in lock position 11 to 14 V
      3C-10 (TR+) - Body ground Output R - Body ground Door lock motor lock drive output Luggage door open button of electrical key transmitter sub-assembly not pressed Below 1 V Tr/B-Door Unlock SW
      Luggage door open button of electrical key transmitter sub-assembly pressed 11 to 14 V
      3C-12 (ACT+) - Body ground Output L - Body ground Door lock motor lock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Lock side of driver door control switch pushed or driver door key cylinder in lock position 11 to 14 V
      3B-4 (ACTD) - Body ground Output GR - Body ground Driver door lock motor unlock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Unlock side of driver door control switch pushed or driver door key cylinder in unlock position 11 to 14 V
      3B-8 (ACT-) - Body ground Output R - Body ground Door lock motor unlock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Unlock side of driver door control switch pushed or driver door key cylinder in unlock position 11 to 14 V
      3C-11 (ACT-) - Body ground Output BR - Body ground Door lock motor unlock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Unlock side of driver door control switch pushed or driver door key cylinder in unlock position 11 to 14 V
      3B-9 (ACT-) - Body ground Output B - Body ground Door lock motor unlock drive output Driver door control switch not pushed and driver door key cylinder in neutral position Below 1 V -
      Unlock side of driver door control switch pushed or driver door key cylinder in unlock position 11 to 14 V
      D6-7 (LSFL) - Body ground Input GR - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V FL Door Lock Pos
      Engine switch off, all doors closed and front door LH locked Pulse generation (See waveform 4)
      D6-18 (LSFR) - Body ground Input BR - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V FR Door Lock Pos
      Engine switch off, all doors closed and front door RH locked Pulse generation (See waveform 5)
      3C-17 (LSR) - Body ground Input Y - Body ground Rear door LH unlock detection switch input Rear door LH or RH unlocked Below 1 V RL-Door Lock Pos SW
      Engine switch off, all doors closed and rear door LH and RH locked Pulse generation (See waveform 6)
      3A-53 (LSR) - Body ground Input Y - Body ground Rear door RH unlock detection switch input Rear door RH or LH unlocked Below 1 V RR-Door Lock Pos SW
      Engine switch off, all doors closed and rear door RH and LH locked Pulse generation (See waveform 6)

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

    5. Using an oscilloscope, check waveform 1.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 12: Identifying Waveform I
      GTY382468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Door control switch off
      *b Door control switch on
      WAVEFORM 1 (REFERENCE)

      Item Content
      Tester Connection
      • D6-9 (L1) - Body ground
      • D6-10 (UL1) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Door control switch off
    6. Using an oscilloscope, check waveform 2.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 13: Identifying Waveform 2
      GTY382468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Engine switch off, all doors closed and driver door key cylinder in neutral position
      *b Driver door key cylinder in lock position
      WAVEFORM 2 (REFERENCE)

      Item Content
      Tester Connection D6-11 (L2) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Engine switch off, all doors closed and driver door key cylinder in neutral position
    7. Using an oscilloscope, check waveform 3.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 14: Identifying Waveform 3
      GTY382468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Engine switch off, all doors closed and driver door key cylinder in neutral position
      *b Driver door key cylinder in unlock position
      WAVEFORM 3 (REFERENCE)

      Item Content
      Tester Connection D6-24 (UL3) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Engine switch off, all doors closed and driver door key cylinder in neutral position
    8. Using an oscilloscope, check waveform 4.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 15: Identifying Waveform 4
      GTY382468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Engine switch off, all doors closed and front door LH locked
      *b Front door LH unlocked
      WAVEFORM 4 (REFERENCE)

      Item Content
      Tester Connection D6-7 (LSFL) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Engine switch off, all doors closed and front door LH locked
    9. Using an oscilloscope, check waveform 5.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 16: Identifying Waveform 5
      GTY382468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Engine switch off, all doors closed and front door RH locked
      *b Front door RH unlocked
      WAVEFORM 5 (REFERENCE)

      Item Content
      Tester Connection D6-18 (LSFR) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Engine switch off, all doors closed and front door RH locked
    10. Using an oscilloscope, check waveform 6.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Fig 17: Identifying Waveform 6
      GTY382468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Engine switch off, all doors closed and rear door RH and LH locked
      *b Rear door RH or LH unlocked
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection
      • 3C-17 (LSR) - Body ground
      • 3A-53 (LSR) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Engine switch off, all doors closed and rear door RH and LH locked
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