ENTRY AND START SYSTEM(for Entry Function) All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate

DESCRIPTION

If the entry lock and wireless lock operations cannot be performed, there may be electrical key transmitter sub-assembly malfunctions, wave interference or problems in the communication which is used for the entry and wireless function between the door control receiver and certification ECU (smart key ECU assembly).

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   INSPECT AUXILIARY BATTERY

   
   

   1. Measure the voltage of the auxiliary battery with the power switch off.

      Standard Voltage
      11 to 14 V

      Tip:

      It may be possible to tell whether the auxiliary battery is discharged by operating the horn.

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
2. Click here

   CHECK FOR DTC

   
   

   1. Open the driver door using the mechanical key built into the electrical key transmitter sub-assembly.

   2. Check for DTCs.

      
      
      1. Body Electrical > Entry&Start > Trouble Codes
      2. 
         
      3. 
         

      Result
      Result Proceed to DTCs are not output A DTCs are output B

   
   
   • AClick here
   • B

     GO TO DIAGNOSTIC TROUBLE CODE CHARTClick here

3. Click here

   CHECK DOOR AJAR WARNING

   
   

   1. When the doors are locked by operating the entry lock function with all doors closed, check that the door ajar warning operates.

      Tip:

      Warning function (door ajar warning)

      Click here

      Result
      Result Proceed to The wireless buzzer does not sound A The wireless buzzer sounds B

   
   
   • AClick here
   • B

     GO TO LIGHTING SYSTEM (Proceed to Door Courtesy Switch Circuit)Click here

4. Click here

   CHECK POWER DOOR LOCK CONTROL SYSTEM

   
   

   1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

      Click here

      Result
      Result Proceed to Power door lock function operates normally A Power door lock function does not operate normally B

   
   
   • AClick here
   • B

     GO TO POWER DOOR LOCK CONTROL SYSTEMClick here

5. Click here

   CHECK KEY DIAGNOSTIC MODE

   
   

   1. Check the following antennas in key diagnostic mode.

      
      
      1. Body Electrical > Entry&Start > Utility

         Tester Display
         Communication Check(Key Diag Mode)

      2. 
         
         1. 
            
      3. 
         
         10. 
             
      
      
      1. 

         *A	for LHD
         *B	for RHD
         *a	0.7 to 1 m (2.30 to 3.28 ft.)

         Check the electrical key antenna (for driver door):

         When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless buzzer sounds.

         Tip:
         

         • 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.

      2. 

         *A	for LHD
         *B	for RHD
         *a	0.7 to 1 m (2.30 to 3.28 ft.)

         Check the electrical key antenna (for front passenger door):

         When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for front passenger door), check that the wireless buzzer sounds.

         Tip:
         

         • 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.

      3. 

         *a	Inspection Point

         Check the No. 2 indoor electrical key antenna assembly (front floor):

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

         Tip:
         

         • 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.

      4. 

         *a	Inspection Point

         Check the indoor electrical key antenna (rear floor):

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

         Tip:
         

         • 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.

      5. 

         *a	0.7 to 1 m (2.30 to 3.28 ft.)

         Check the electrical key antenna (outside luggage compartment):

         When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the wireless buzzer sounds.

         Tip:
         

         • 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
      Result Proceed to Diagnostic mode inspections fail for both channels A Diagnostic mode inspections succeed for both channels B Diagnostic mode inspection succeeds for only one of the channels C

   
   
   • AClick here
   • BClick here
   • CClick here
6. Click here

   CHECK WAVE ENVIRONMENT

   
   

   1. Bring the electrical key transmitter sub-assembly that was checked first near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck key diagnostic mode.

      Click here

      Tip:
      

      • When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • 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.

      Result
      Result Proceed to The wireless buzzer does not sound A The wireless buzzer sounds B

   
   
   • AClick here
   • B

     AFFECTED BY WAVE INTERFERENCE

7. Click here

   CHECK TRANSMITTER BATTERY

   
   

   1. Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.

      
      

      1. Press and hold the lock switch of the transmitter for 5 seconds and check the number of times that the transmitter LED illuminates.

         Tip:
         

         • The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.2 V or less.

           Click here

         • Even if the transmitter battery is depleted, it is still possible to start the hybrid control system by holding the electrical key transmitter sub-assembly near the power switch, depressing the brake pedal and pressing the power switch.

      Result
      Result Proceed to Transmitter LED illuminates 3 times or more when switch is pressed and held A Transmitter LED does not illuminate when switch is pressed and held B Transmitter LED illuminates once or twice but not a third time C

   
   
   • AClick here
   • BClick here
   • C

     REPLACE TRANSMITTER BATTERYClick here

8. Click here

   CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

   
   

   1. Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

      Result
      Result Proceed to Another registered electrical key transmitter sub-assembly is not available A Another registered electrical key transmitter sub-assembly is available B

   
   
   • AClick here
   • BClick here

     GO TO STEP 10

9. Click here

   ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)

   
   

   1. Register a new electrical key transmitter sub-assembly.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
10. Click here

    CHECK ENTRY LOCK OPERATION

    
    

    1. Using another registered electrical key transmitter sub-assembly, check that the entry lock and unlock functions operate.

       Result
       Result Proceed to Entry function does not operate normally A Entry function operates normally B

    
    
    • AClick here
    • B

      END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

11. Click here

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DOOR CONTROL RECEIVER AND BODY GROUND)

    
    

    1. Disconnect the K136 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the Q37*1 or Q38*2 door control receiver connector.

       
       

       • *1: for 5 Pin Type

       • *2: for 12 Pin Type

    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance (for 5 Pin Type)
       Tester Connection Condition Specified Condition K136-18 (RCO) - Q37-4 (+5) Always Below 1 Ω K136-20 (RDAM) - Q37-5 (DATA) Always Below 1 Ω K136-19 (CSEL) - Q37-2 (CSEL) Always Below 1 Ω K136-18 (RCO) or Q37-4 (+5) - Body ground Always 10 kΩ or higher K136-20 (RDAM) or Q37-5 (DATA) - Body ground Always 10 kΩ or higher K136-19 (CSEL) or Q37-2 (CSEL) - Body ground Always 10 kΩ or higher

       Standard Resistance (for 12 Pin Type)
       Tester Connection Condition Specified Condition K136-18 (RCO) - Q38-10 (+5) Always Below 1 Ω K136-20 (RDAM) - Q38-9 (DATA) Always Below 1 Ω K136-19 (CSEL) - Q38-6 (CSEL) Always Below 1 Ω K136-18 (RCO) or Q38-10 (+5) - Body ground Always 10 kΩ or higher K136-20 (RDAM) or Q38-9 (DATA) - Body ground Always 10 kΩ or higher K136-19 (CSEL) or Q38-6 (CSEL) - Body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

12. Click here

    CHECK ENTRY LOCK OPERATION

    
    

    1. Connect all connectors and check that the entry lock and unlock functions operate.

       Click here

       Result
       Result Proceed to Entry function does not operate normally A Entry function operates normally B

    
    
    • AClick here
    • B

      END (CONNECTOR WAS NOT CONNECTED SECURELY)

13. Click here

    CHECK DOOR CONTROL RECEIVER

    
    
    1. 

       *A	for 5 Pin Type
       *B	for 12 Pin Type
       *a	Component with harness connected (Door Control Receiver)

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance (for 5 Pin Type)
       Tester Connection Condition Specified Condition Q37-1 (GND) - Body ground Always Below 1 Ω

       Standard Resistance (for 12 Pin Type)
       Tester Connection Condition Specified Condition Q38-12 (GND) - Body ground Always Below 1 Ω

    2. Measure the voltage according to the value(s) in the table below.

       Standard Voltage (for 5 Pin Type)
       Tester Connection Condition Specified Condition Q37-5 (DATA) - Q37-1 (GND) Procedure: All doors closed All doors locked Lock or unlock switch of electrical key transmitter sub-assembly pressed Below 1 V → Pulse generation

       Standard Voltage (for 12 Pin Type)
       Tester Connection Condition Specified Condition Q38-9 (DATA) - Q38-12 (GND) Procedure: All doors closed All doors locked Lock or unlock switch of electrical key transmitter sub-assembly pressed Below 1 V → Pulse generation

       Result
       Result Proceed to OK A NG (for 5 Pin Type) B NG (for 12 Pin Type) C

    
    
    • AClick here
    • B

      REPLACE DOOR CONTROL RECEIVERClick here

    • C

      REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLYClick here

14. Click here

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    
    
    1. 

       *A	for 5 Pin Type
       *B	for 12 Pin Type
       *a	Component with harness connected (Door Control Receiver)

       Measure the voltage according to the value(s) in the table below.

       Standard Voltage (for 5 Pin Type)
       Tester Connection Condition Specified Condition Q37-4 (+5) - Q37-1 (GND) Procedure: Power switch off Electrical key transmitter sub-assembly switch not pressed → pressed Below 1 V → 4.5 to 6.0 V → Below 1 V Q37-2 (CSEL) - Q37-1 (GND) Procedure: Power switch off All doors closed Below 1 V → Pulse generation

       Standard Voltage (for 12 Pin Type)
       Tester Connection Condition Specified Condition Q38-1 (IG) - Q38-12 (GND) Power switch on (IG) 10 to 16 V Q38-10 (+5) - Q38-12 (GND) Procedure: Power switch off Electrical key transmitter sub-assembly switch not pressed → pressed Below 1 V → 4.5 to 6.0 V → Below 1 V Q38-6 (CSEL) - Q38-12 (GND) Procedure: Power switch off All doors closed Below 1 V → Pulse generation

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

15. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    
    

    1. Replace the certification ECU (smart key ECU assembly) and perform registration again.

       Tip:

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    
    • NEXTClick here
16. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

    
    

    1. Check that the wireless door lock functions operate normally.

       Click here

       Result
       Result Proceed to Wireless door lock function does not operate normally A Wireless door lock function operates normally B

    
    
    • A

      END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    • B

      REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)Click here

17. Click here

    INSPECT TRANSMITTER BATTERY

    
    

    1. Inspect the transmitter battery.

       Click here

       Note:

       Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly.

       Result
       Proceed to OK NG

    
    
    • OK

      REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    • NG

      REPLACE TRANSMITTER BATTERYClick here

18. Click here

    PERFORM REGISTRATION

    
    

    1. Perform registration of the B code.

       Tip:

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    
    • NEXTClick here
19. Click here

    CHECK ENTRY LOCK OPERATION

    
    

    1. After B code registration is complete, check that the entry lock and unlock functions operate.

       Click here

       Result
       Result Proceed to Entry function does not operate normally A Entry function operates normally B

    
    
    • AClick here
    • B

      END (B CODE REGISTRATION FAILED)

20. Click here

    READ VALUE USING GTS (B CODE)

    
    

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Entry&Start / Data List.

    5. Read the Data List according to the display on the GTS.

       
       
       1. Body Electrical > Entry&Start > Data List

          Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
          B Code	B code registration status	Regd or No Regd	Regd: B code registered correctly No Regd: B code not registered correctly	-

       2. 
          
          10. 
              
       
       
       1. Body Electrical > Entry&Start > Data List

          Tester Display
          B Code

       2. 
          
          1. 
             
       3. 
          
          10. 
              

       Result
       Result Proceed to "No Regd" is displayed on the GTS A "Regd" is displayed on the GTS B

    
    
    • AClick here
    • B

      REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)Click here

21. Click here

    READ VALUE USING GTS (B CODE DIFFERENCE)

    
    

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Entry&Start / Data List.

    5. Read the Data List according to the display on the GTS.

       
       
       1. Body Electrical > Entry&Start > Data List

          Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
          B Code Difference	B code mismatch	Yes or No	Yes: Communication malfunction No: Communication normal	-

       2. 
          
          10. 
              
       
       
       1. Body Electrical > Entry&Start > Data List

          Tester Display
          B Code Difference

       2. 
          
          1. 
             
       3. 
          
          10. 
              

       Result
       Result Proceed to "No" is displayed on the GTS A "Yes" is displayed on the GTS B

    
    
    • AClick here
    • B

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

22. Click here

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    
    

    1. Measure the voltage while checking the Data List on the GTS.

       
       

       1. Connect the GTS to the DLC3.

       2. Turn the power switch on (IG).

       3. Turn the GTS on.

       4. Enter the following menus: Body Electrical / Power Source Control / Data List.

       5. 

          *a

          Component with harness connected (Certification ECU (Smart Key ECU Assembly))

          -

          -

          Read the Data List according to the display on the GTS.

          
          
          1. Body Electrical > Power Source Control > Data List

             Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
             Power Supply Condition	Power supply state	All OFF, ACC ON, IG ON or ST ON	All OFF: Power switch off (ACC and IG) ACC ON: Power switch on (ACC) IG ON: Power switch on (IG) ST ON: Sending hybrid control system start request signal	-

          2. 
             
             10. 
                 
          
          
          1. Body Electrical > Power Source Control > Data List

             Tester Display
             Power Supply Condition

          2. 
             
             1. 
                
          3. 
             
             10. 
                 

          Standard Voltage
          Tester Connection Condition Specified Condition A83-3 (IG1D) - Body ground Power switch off Below 1 V Power switch on (ACC) Below 1 V Power switch on (IG) 9 V or higher K137-9 (ACCD) - Body ground Power switch off Below 1 V Power switch on (ACC) 8.5 V or higher Power switch on (IG) 8.5 V or higher

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

23. Click here

    READ VALUE USING GTS (ACC SW, IG SW)

    
    

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.

       
       
       1. Body Electrical > Main Body > Data List

          Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
          ACC SW	Power switch status	ON or OFF	ON: Power switch on (ACC) or on (IG) OFF: Power switch off	"ON" is displayed even though the power switch is on (IG).
          IG SW	Power switch status	ON or OFF	ON: Power switch on (IG) OFF: Power switch off	"OFF" is displayed even though the power switch is on (ACC).

       2. 
          
          10. 
              
          11. 
              
       
       
       1. Body Electrical > Main Body > Data List

          Tester Display
          ACC SW
          IG SW

       2. 
          
          1. 
             
       3. 
          
          10. 
              
          11. 
              
       Tip:

       If the certification ECU (smart key ECU assembly) misjudges for any reason that the power switch is on (IG) even though the power switch is off, the entry lock and unlock functions stop.

       Result
       Result Proceed to The certification ECU (smart key ECU assembly) judges properly that the power source is off when the power switch is off A The main body ECU does not judge properly that the power source is off when the power switch is off B

    
    
    • AClick here
    • B

      TROUBLESHOOT MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)Click here

24. Click here

    CHECK ENTRY LOCK OPERATION

    
    

    1. Disconnect and reconnect the certification ECU (smart key ECU assembly) connector.

    2. Check that the entry lock and unlock functions operate.

       Click here

       Result
       Result Proceed to Entry function does not operate normally A Entry function operates normally B

    
    
    • AClick here
    • B

      END (CONNECTOR WAS NOT CONNECTED SECURELY)

25. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    
    

    1. Replace the certification ECU (smart key ECU assembly) with a new one and perform registration again.

       Tip:

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    
    • NEXTClick here
26. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

    
    

    1. Check that the wireless door lock functions operate normally.

       Click here

       Result
       Result Proceed to Wireless door lock function operates normally A Wireless door lock function does not operate normally B

    
    
    • A

      END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    • B

      REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)Click here

27. Click here

    CHECK WAVE ENVIRONMENT

    
    

    1. Bring the electrical key transmitter sub-assembly that was checked first near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck key diagnostic mode.

       Tip:
       

       • When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

       • 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.

       Result
       Result Proceed to The wireless buzzer does not sound A The wireless buzzer sounds B

    
    
    • AClick here
    • B

      AFFECTED BY WAVE INTERFERENCE

28. Click here

    CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    
    

    1. Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

       Result
       Result Proceed to Another registered electrical key transmitter sub-assembly is not available A Another registered electrical key transmitter sub-assembly is available B

    
    
    • AClick here
    • BClick here

      GO TO STEP 30

29. Click here

    ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)

    
    

    1. Register a new electrical key transmitter sub-assembly.

       Tip:

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    
    • NEXTClick here
30. Click here

    CHECK WAVE ENVIRONMENT

    
    

    1. Bring another registered electrical key transmitter sub-assembly near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck key diagnostic mode.

       Tip:
       

       • When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

       • 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.

       Result
       Result Proceed to The wireless buzzer does not sound A The wireless buzzer sounds B

    
    
    • AClick here
    • B

      END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

31. Click here

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DOOR CONTROL RECEIVER)

    
    

    1. Disconnect the K136 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the Q37*1 or Q38*2 door control receiver connector.

       
       

       • *1: for 5 Pin Type

       • *2: for 12 Pin Type

    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance (for 5 Pin Type)
       Tester Connection Condition Specified Condition K136-19 (CSEL) - Q37-2 (CSEL) Always Below 1 Ω K136-19 (CSEL) or Q37-2 (CSEL) - Body ground Always 10 kΩ or higher

       Standard Resistance (for 12 Pin Type)
       Tester Connection Condition Specified Condition K136-19 (CSEL) - Q38-6 (CSEL) Always Below 1 Ω K136-19 (CSEL) or Q38-6 (CSEL) - Body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

32. Click here

    CHECK ENTRY LOCK OPERATION

    
    

    1. Connect all connectors and check that the entry lock and unlock functions operate.

       Click here

       Result
       Result Proceed to Entry function does not operate normally A Entry function operates normally B

    
    
    • AClick here
    • B

      END (CONNECTOR WAS NOT CONNECTED SECURELY)

33. Click here

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    
    
    1. 

       *A	for 5 Pin Type
       *B	for 12 Pin Type
       *a	Component with harness connected (Door Control Receiver)

       Measure the voltage according to the value(s) in the table below.

       Standard Voltage (for 5 Pin Type)
       Tester Connection Condition Specified Condition Q37-2 (CSEL) - Q37-1 (GND) Procedure: Power switch off All doors closed Below 1 V → Pulse generation

       Standard Voltage (for 12 Pin Type)
       Tester Connection Condition Specified Condition Q38-6 (CSEL) - Q38-12 (GND) Procedure: Power switch off All doors closed Below 1 V → Pulse generation

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

34. Click here

    CHECK DOOR CONTROL RECEIVER

    
    

    1. Enter key diagnostic mode and select the channel for which the wireless buzzer did not sound.

    2. 

       *A	for 5 Pin Type
       *B	for 12 Pin Type
       *a	Component with harness connected (Door Control Receiver)

       Measure the voltage according to the value(s) in the table below.

       Standard Voltage (for 5 Pin Type)
       Tester Connection Condition Specified Condition Q37-5 (DATA) - Q37-1 (GND) Procedure: All doors closed All doors locked Lock or unlock switch of electrical key transmitter sub-assembly pressed Below 1 V → 11 to 14 V → Below 1 V

       Standard Voltage (for 12 Pin Type)
       Tester Connection Condition Specified Condition Q38-9 (DATA) - Q38-12 (GND) Procedure: All doors closed All doors locked Lock or unlock switch of electrical key transmitter sub-assembly pressed Below 1 V → 11 to 14 V → Below 1 V

       Tip:

       Inspection should be performed while the electrical key antenna check in key diagnostic mode is being performed on the failed channel (the channel in which the buzzer did not sound).

       Result
       Result Proceed to OK A NG (for 5 Pin Type) B NG (for 12 Pin Type) C

    
    
    • AClick here
    • B

      REPLACE DOOR CONTROL RECEIVERClick here

    • C

      REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLYClick here

35. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    
    

    1. Replace the certification ECU (smart key ECU assembly) and perform registration again.

       Tip:

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    
    • NEXTClick here
36. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

    
    

    1. Check that the wireless door lock functions operate normally.

       Click here

       Result
       Result Proceed to Wireless door lock function operates normally A Wireless door lock function does not operate normally B

    
    
    • A

      END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    • B

      REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)Click here