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Room Oscillator does not Recognize Key [08/2019 - 08/2021]: Procedure

  1. CHECK START OPERATION 
    1. Using another registered electrical key transmitter sub-assembly, check that the engine starts.

      Result

      Result Proceed to
      Engine can be started A
      Engine cannot be started B

    Result: 

    A 

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE) 

    Result: 

    B 

    See step  2

  2. CHECK ENTRY LOCK OPERATION 
    1. Check that the entry lock and unlock functions operate on each door.

      HINT: 

      If the door control and tire pressure monitoring system receiver assembly is defective, code verification does not begin in the cabin and the entry lock and unlock functions do not operate.

      Result

      Result Proceed to
      All door entry functions operate normally A
      All door entry functions does not operate normally B

    Result: 

    B 

    GO TO OTHER PROBLEM. Refer to  PROBLEM SYMPTOMS TABLE [08/2019 - ] 

    Result: 

    A 

    See step  3

  3. CHECK PUSH-BUTTON START FUNCTION 
    1. Remove the transmitter battery of the electrical key transmitter sub-assembly.
      GTY914025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Engine Switch
      *2 Electrical Key Transmitter Sub-assembly

      Refer to REPLACEMENT [08/2019 - ]

    2. With the brake pedal depressed, face the logo side of the electrical key transmitter sub-assembly towards the engine switch, hold the transmitter near the engine switch and then press the engine switch.
    3. When operating the engine switch, check whether the engine starts.

      HINT: 

      • When the electrical key transmitter sub-assembly cannot be verified even though it is inside the detection area, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter sub-assembly and holding the electrical key transmitter sub-assembly near the engine switch.
      • If the engine cannot be started when performing this inspection, the certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator assembly) may be malfunctioning.

      OK

      Engine starts.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO SMART KEY SYSTEM (FOR START FUNCTION). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2021] 

    Result: 

    OK 

    See step  4

  4. CHECK WAVE ENVIRONMENT 
    1. Install the transmitter battery to the electrical key transmitter sub-assembly.

      Refer to INSTALLATION [08/2019 - ]

    2. Bring the electrical key transmitter sub-assembly near the No. 2 indoor electrical key antenna assembly (front floor) and perform a smart key system check.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      NOTE:

      Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 2 indoor electrical key antenna assembly (front floor).

    3. Bring the electrical key transmitter sub-assembly near the indoor electrical key antenna (rear floor) and perform a smart key system check.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      NOTE:

      Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the center of the indoor electrical key antenna (rear floor).

      HINT: 

      Check that the customize status of the "Ignition Available Area" has been "All".

    4. Bring the electrical key transmitter sub-assembly near the No. 1 electrical key antenna (inside luggage) and perform a smart key system check.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      NOTE:

      Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the center of the No. 1 electrical key antenna (inside luggage).

      HINT: 

      • As the effect of wave interference decreases by moving the electrical key transmitter sub-assembly close to each indoor electrical key antenna assembly, it may be possible to check whether wave interference is the cause of the problem.
      • If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
      • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
      • If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

      OK

      The engine starts when the electrical key transmitter sub-assembly is held near each indoor electrical key antenna assembly and the engine switch is pressed.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    AFFECTED BY WAVE INTERFERENCE 

    Result: 

    NG 

    See step  5

  5. CHECK FOR DTC 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2019 - ]

      OK

      DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] 

    Result: 

    OK 

    See step  6

  6. CHECK KEY DIAGNOSTIC MODE 
    1. Check the following antennas in key diagnostic mode.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      BODY ELECTRICAL > SMART KEY > UTILITY

      Tester Display
      Communication Check(Key Diag Mode)
    2. Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
      1. Check the No. 2 indoor electrical key antenna assembly (front floor).
        GTY840507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Inspection Point

        When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

      2. Check the indoor electrical key antenna (rear floor).
        GTY841829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Inspection Point

        When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

      3. Check the No. 1 electrical key antenna (inside luggage):

        When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

        GTY858751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/ Rear No. 2 Seat Assembly *B w/o Rear No. 2 Seat Assembly
        *a Inspection Point - -

        HINT: 

        • Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
        • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.
        • It is possible to check which indoor electrical key antenna assembly (front floor or rear floor) is operating by the sounding of the buzzer.
        • When the wireless buzzer sounds for all indoor electrical key antenna assemblies, they can be judged as operating properly and a malfunction in the certification ECU (smart key ECU assembly), which performs verification, is suspected.
        • When the wireless buzzer does not sound for all indoor electrical key antenna assemblies, it can be judged that the certification ECU (smart key ECU assembly), which controls the indoor electrical key antenna assemblies, is malfunctioning.

      Result

      Result Proceed to
      The wireless buzzer sounds/does not sound for all indoor electrical key antenna assemblies A
      The wireless buzzer does not sound for only the No. 2 indoor electrical key antenna assembly (front floor) B
      The wireless buzzer does not sound for only the indoor electrical key antenna (rear floor) C
      The wireless buzzer does not sound for only the No. 1 indoor electrical key antenna assembly (inside luggage) D

    Result: 

    A 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

    Result: 

    C 

    See step  11

    Result: 

    D 

    See step  15

    Result: 

    B 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)) 
    1. Disconnect the F113 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the F77 No. 2 indoor electrical key antenna assembly (front floor) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F113-21 (CLG5) - F77-1 (ANTE5) Always Below 1 Ω
      F113-20 (CG5B) - F77-3 (CLGB) Always Below 1 Ω
      F113-21 (CLG5) or F77-1 (ANTE5) - Body ground Always 10 kΩ or higher
      F113-20 (CG5B) or F77-3 (CLGB) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)) 
    1. Disconnect the F77 No. 2 indoor electrical key antenna assembly (front floor) connector.
    2. Using an oscilloscope, check the waveform.
      GTY867257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 2 indoor Electrical Key Antenna Assembly (Front Floor))
      *b Waveform 1
      *c For 30 seconds after closing any door using the door outside handle
      *d 30 seconds or more have elapsed after closing any door using the door outside handle

      OK

      Tester Connection Condition Tool Setting Specified Condition
      F77-1 (ANTE5) - F77-3 (CLGB) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      		 2 V/DIV., 500 ms/DIV. Pulse generation
      (See waveform 1)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  9

  9. REPLACE NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR) 
    1. Temporarily replace the No. 2 indoor electrical key antenna assembly (front floor) with a new one.

      Refer to REMOVAL [08/2015 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. CHECK KEY DIAGNOSTIC MODE 
    1. Check the following antenna in key diagnostic mode.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      BODY ELECTRICAL > SMART KEY > UTILITY

      Tester Display
      Communication Check(Key Diag Mode)
    2. Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
      1. Check the No. 2 indoor electrical key antenna assembly (front floor).
        GTY840507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Inspection Point

        When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

        HINT: 

        • Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
        • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

        OK

        Wireless buzzer sounds.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR) WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

  11. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - INDOOR ELECTRICAL KEY ANTENNA (REAR FLOOR)) 
    1. Disconnect the F112 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the O9 indoor electrical key antenna (rear floor) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F112-15 (CLG6) - O9-1 (ANTE6) Always Below 1 Ω
      F112-14 (CG6B) - O9-2 (CLGB) Always Below 1 Ω
      F112-15 (CLG6) or O9-1 (ANTE6) - Body ground Always 10 kΩ or higher
      F112-14 (CG6B) or O9-2 (CLGB) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO INDOOR ELECTRICAL KEY ANTENNA (REAR FLOOR)) 
    1. Disconnect the O9 indoor electrical key antenna (rear floor) connector.
    2. Using an oscilloscope, check the waveform.

      OK

      Tester Connection Condition Tool Setting Specified Condition
      O9-1 (ANTE6) - O9-2 (CLGB) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      		 2 V/DIV., 500 ms/DIV. Pulse generation
      (See waveform 1)
      GTY873630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Indoor Electrical Key Antenna (Rear Floor))
      *b Waveform 1
      *c For 30 seconds after closing any door using the door outside handle
      *d 30 seconds or more have elapsed after closing any door using the door outside handle

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  13

  13. REPLACE INDOOR ELECTRICAL KEY ANTENNA (REAR FLOOR) 
    1. Temporarily replace the indoor electrical key antenna (rear floor) with a new one.

      Refer to REMOVAL [08/2015 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  14. CHECK KEY DIAGNOSTIC MODE 
    1. Check the following antenna in key diagnostic mode.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      BODY ELECTRICAL > SMART KEY > UTILITY

      Tester Display
      Communication Check(Key Diag Mode)
    2. Select either channel 1 or channel 2 and inspect the diagnostic mode for each channel.
      1. Check the indoor electrical key antenna (rear floor).
        GTY840507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Inspection Point

        When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

        HINT: 

        • Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
        • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

        OK

        Wireless buzzer sounds.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (INDOOR ELECTRICAL KEY ANTENNA (REAR FLOOR) WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

  15. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE)) 
    1. Disconnect the O14 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the F112 No. 1 indoor electrical key antenna assembly (inside luggage) connector.
    3. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F112-4 (CLG7) - O14-1 (ANTE7) Always Below 1 Ω
      F112-3 (CL7B) - O14-2 (CLGB) Always Below 1 Ω
      F112-4 (CLG7) or O14-1 (ANTE7) - Body ground Always 10 kΩ or higher
      F112-3 (CL7B) - O14-2 (CLGB) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  16

  16. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE)) 
    1. Disconnect the F112 No. 1 indoor electrical key antenna assembly (inside luggage) connector.
    2. Using an oscilloscope, check the waveform.
      GTY873629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 indoor electrical key antenna assembly (inside luggage))
      *b Waveform 1
      *c Driver door lock sensor not touched
      *d Driver door lock sensor touched

      OK

      Tester Connection Condition Tool Setting Specified Condition
      O14-1 (ANTE7) - O14-2 (CG7B) Procedure:
      1. Door is closed
      2. Engine switch off
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. Driver door lock sensor touched
      		 2 V/DIV., 500 ms/DIV. Pulse generation (See waveform 1)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  17

  17. REPLACE INDOOR NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE) 
    1. Temporarily replace the indoor No. 1 indoor electrical key antenna assembly (inside luggage) with a new one.

      Refer to REMOVAL [08/2015 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  18

  18. INSPECT ANTENNA TYPE 
    1. Check the following antenna in key diagnostic mode.

      Refer to OPERATION CHECK [08/2019 - 08/2021]

      BODY ELECTRICAL > SMART KEY > UTILITY

      Tester Display
      Communication Check(Key Diag Mode)
    2. Using an oscilloscope, check the waveform.
      1. Check the indoor No. 1 indoor electrical key antenna assembly (inside luggage).

        When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

        HINT: 

        • Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
        • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

      Result

      Result Proceed to
      Wireless buzzer sounds OK
      Wireless buzzer not sounds NG

    Result: 

    OK 

    END (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE) WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

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