SMART ENTRY AND START SYSTEM(for Start Function) Power Source Mode does not Change to ON (IG and ACC)

DESCRIPTION

When the engine switch cannot be turned on (ACC) or on (IG), interior verification may be abnormal or there may be a malfunction in the ACC relay or IG relay circuit. If interior verification cannot be performed, the certification ECU (smart key ECU assembly) may be malfunctioning or communication may not be possible between the No. 1 indoor electrical key antenna assembly (front floor) or No. 1 indoor electrical key antenna assembly (rear floor) and the electrical key transmitter sub-assembly and door control receiver.

When an electrical key transmitter sub-assembly is brought into the cabin, its key ID code is compared with the key ID code stored in the certification ECU (smart key ECU assembly). If these codes do not match, key verification will fail and the engine switch will not be able to be turned on (ACC) or on (IG).

When a door is unlocked and an electrical key transmitter sub-assembly is brought into the cabin, the certification ECU (smart key ECU assembly) activates the indoor electrical key antenna assemblies to form the interior detection area. The electrical key transmitter sub-assembly then responds to the detection signals with its key ID code. This response signal is received by the door control receiver and sent to the certification ECU (smart key ECU assembly).

CAUTION / NOTICE / HINT

1. Body Electrical > Entry&Start > Utility

   Tester Display
   Operation History

2. 
   
   1. 
      
3. 
   
   10. 
       

PROCEDURE

1. Click here

   CHECK POWER SOURCE MODE

   
   

   1. Get into the vehicle while carrying the electrical key transmitter sub-assembly that has already been registered.

   2. Move the shift lever to P.

   3. Press the engine switch with the brake pedal released and check that the power source mode changes.

      Click here

      Result
      Result Proceed to Power source mode can only be changed when electrical key transmitter sub-assembly is in push button start function operation range for rear side A Power source mode can only be changed when electrical key transmitter sub-assembly is in push button start function operation range for front side B Power source mode cannot be changed C

   
   
   • AClick here
   • BClick here
   • CClick here
2. Click here

   CHECK WAVE ENVIRONMENT

   
   

   1. Install the transmitter battery to the electrical key transmitter sub-assembly.

      Click here

   2. Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (front floor) and perform an smart entry and start system check.

      Click here

      Note:

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

      Tip:
      

      • 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 with the brake pedal depressed.

      Result
      Proceed to OK NG

   
   
   • OK

     AFFECTED BY WAVE INTERFERENCE

   • NGClick here
3. Click here

   CHECK KEY DIAGNOSTIC MODE

   
   

   1. Check the following antennas in key diagnostic mode.

   2. 

      *a	Inspection Point

      Check the No. 1 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 perform the key diagnostic mode inspection 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 No. 1 indoor electrical key antenna assembly (front floor, rear floor or inside luggage compartment) 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.

      
      
      1. Body Electrical > Entry&Start > Utility

         Tester Display
         Communication Check(Key Diag Mode)

      2. 
         
         1. 
            
      3. 
         
         10. 
             

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

   
   
   • AClick here
   • B

     AFFECTED BY WAVE INTERFERENCE

4. Click here

   CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR))

   
   

   1. Disconnect the K62 certification ECU (smart key ECU assembly) connector.

   2. Disconnect the K64 No. 1 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 K62-8 (CLG5) - K64-1 (ANTE5) Always Below 1 Ω K62-9 (CG5B) - K64-3 (CLGB) Always Below 1 Ω K62-8 (CLG5) or K64-1 (ANTE5) - Other terminals and body ground Always 10 kΩ or higher K62-9 (CG5B) or K64-3 (CLGB) - Other terminals and body ground Always 10 kΩ or higher

   4. Reconnect the K62 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

5. Click here

   CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR))

   
   
   1. 

      *a	Front view of wire harness connector (to No. 1 Indoor Electrical Key Antenna Assembly (Front Floor))	*b	Waveform
      *c	For 30 seconds after closing any door	*d	After 30 seconds or more have elapsed since any door closed

      Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition K64-1 (ANTE5) - K64-3 (CLGB) Procedure: Engine switch off Electrical key transmitter sub-assembly not inside vehicle Within 30 seconds of closing any door 2 V/DIV., 500 ms/DIV. Pulse generation (See waveform)

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)Click here

   • NG

     REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

6. Click here

   CHECK WAVE ENVIRONMENT

   
   

   1. Install the transmitter battery to the electrical key transmitter sub-assembly.

      Click here

   2. Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (rear floor) and perform an smart entry and start system check.

      Click here

      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 indoor electrical key antenna assembly (rear floor).

      Tip:

      Check that the customize setting "Ignition Available Area" is set to "All".

      Tip:
      

      • 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 with the brake pedal depressed.

      Result
      Proceed to OK NG

   
   
   • OK

     AFFECTED BY WAVE INTERFERENCE

   • NGClick here
7. Click here

   CHECK KEY DIAGNOSTIC MODE

   
   

   1. Check the following antennas in key diagnostic mode.

   2. 

      *a	Inspection Point

      Check the No. 1 indoor electrical key antenna assembly (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 perform the key diagnostic mode inspection 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 No. 1 indoor electrical key antenna assembly (front floor, rear floor or inside luggage compartment) 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.

      
      
      1. Body Electrical > Entry&Start > Utility

         Tester Display
         Communication Check(Key Diag Mode)

      2. 
         
         1. 
            
      3. 
         
         10. 
             

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

   
   
   • AClick here
   • B

     AFFECTED BY WAVE INTERFERENCE

8. Click here

   CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR))

   
   

   1. Disconnect the R8 certification ECU (smart key ECU assembly) connector.

   2. Disconnect the R10 No. 1 indoor electrical key antenna assembly (rear floor) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition R8-5 (CLG6) - R10-1 (ANTE6) Always Below 1 Ω R8-6 (CG6B) - R10-3 (CLGB) Always Below 1 Ω R8-5 (CLG6) or R10-1 (ANTE6) - Other terminals and body ground Always 10 kΩ or higher R8-6 (CG6B) or R10-3 (CLGB) - Other terminals and body ground Always 10 kΩ or higher

   4. Reconnect the R8 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

9. Click here

   CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR))

   
   
   1. 

      *a	Front view of wire harness connector (to No. 1 Indoor Electrical Key Antenna Assembly (Rear Floor))	*b	Waveform
      *c	For 30 seconds after closing any door	*d	After 30 seconds or more have elapsed since any door closed

      Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition R10-1 (ANTE6) - R10-3 (CLGB) Procedure: Engine switch off Electrical key transmitter sub-assembly not inside vehicle Within 30 seconds of closing any door 2 V/DIV., 500 ms/DIV. Pulse generation (See waveform)

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)Click here

   • NG

     REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

10. Click here

    INSPECT 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 electrical key transmitter sub-assembly for 5 seconds and check the number of times that the 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. "Yes" is displayed for the Data List item Key Low Battery 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 engine by holding the electrical key transmitter sub-assembly near the engine switch, depressing the brake pedal and pressing the engine switch.

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

    
    
    • AClick here
    • BClick here
    • C

      REPLACE TRANSMITTER BATTERYClick here

11. Click here

    CHECK ENTRY LOCK / UNLOCK OPERATION

    
    

    1. Check that the entry lock and unlock functions operate on each door.

       Click here

       Tip:

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

       Result
       Result Proceed to Entry functions operate normally for all doors (w/ Wireless Charging System) A Entry functions operate normally for all doors (w/o Wireless Charging System) B An entry function does not operate normally for a door C

    
    
    • AClick here
    • BClick here

      GO TO STEP 13

    • C

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

12. Click here

    CHECK WIRELESS CHARGING SYSTEM

    
    

    1. Wireless charging system off.

       Click here

    2. Check that interior verification is performed.

       Click here

       Result
       Result Proceed to Interior verification is not performed normally A Interior verification is performed normally B

    
    
    • AClick here
    • B

      GO TO WIRELESS CHARGING SYSTEMClick here

13. Click here

    READ VALUE USING GTS (START SWITCH1, START SWITCH2)

    
    

    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. 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
          Start Switch1	Engine switch 1 status	OFF or ON	OFF: Engine switch not pressed ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.
          Start Switch2	Engine switch 2 status	OFF or ON	OFF: Engine switch not pressed ON: Engine switch pressed	Backup for engine switch 1. However, when the engine switch is pressed and held, the control functions only when both engine switch 1 and 2 are normal. Behaves the same way as engine switch 1.

       2. 
          
          10. 
              
          11. 
              
       
       
       1. Body Electrical > Power Source Control > Data List

          Tester Display
          Start Switch1
          Start Switch2

       2. 
          
          1. 
             
       3. 
          
          10. 
              
          11. 
              

       OK
       The value of "Start Switch1" and "Start Switch2" change correctly in response to the engine switch operation.

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NGClick here
14. 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 engine 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: Engine switch off (ACC and IG) ACC ON: Engine switch on (ACC) IG ON: Engine switch on (IG) ST ON: Sending engine start request signal	-

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

             Tester Display
             Power Supply Condition

          2. 
             
             1. 
                
          3. 
             
             10. 
                 

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

          Standard Voltage
          Tester Connection Condition Specified Condition K62-17 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (ACC) Below 1 V Engine switch on (IG) 9 V or higher K62-16 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8.5 V or higher Engine switch on (IG) 8.5 V or higher

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

15. Click here

    CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (ACC, IG1-NO. 1, IG1-NO. 2, IG2-NO. 2 RELAY)

    
    

    1. Remove the instrument panel junction block assembly.

       Click here

    2. Connect all of the instrument panel junction block assembly connectors.

    3. 

       *a

       Component without harness connected (Instrument Panel Junction Block Assembly)

       -

       -

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

       Standard Voltage
       Tester Connection Condition Specified Condition 3D-26 - Body ground Engine switch on (ACC) 11 to 14 V 3D-35 - Body ground Engine switch on (IG) 11 to 14 V 3C-2 - Body ground Engine switch on (IG) 11 to 14 V 3C-15 - Body ground Engine switch on (IG) 11 to 14 V

       Result
       Proceed to OK NG

    
    
    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NGClick here
16. Click here

    CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND)

    
    

    1. Disconnect the 3B instrument panel junction block assembly connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition 3B-3 - Body ground Always Below 1 Ω

       Result
       Proceed to OK NG

    
    
    • OK

      REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

17. Click here

    INSPECT ENGINE SWITCH

    
    

    1. Remove the engine switch.

       for A25A-FKS:Click here

       for 2GR-FKS:Click here

       for 2AR-FE:Click here

    2. Inspect the engine switch.

       for A25A-FKS:Click here

       for 2GR-FKS:Click here

       for 2AR-FE:Click here

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPLACE ENGINE SWITCH for A25A-FKS:Click here

      REPLACE ENGINE SWITCH for 2GR-FKS:Click here

      REPLACE ENGINE SWITCH for 2AR-FE:Click here

18. Click here

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ENGINE SWITCH)

    
    

    1. Disconnect the K62 certification ECU (smart key ECU assembly) connector.

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

       Standard Resistance

       Tester Connection Condition Specified Condition K62-23 (SSW1) - K63-5 (SS1) Always Below 1 Ω K62-21 (SSW2) - K63-1 (SS2) Always Below 1 Ω K62-11 (AGND) - K63-6 (AGND) Always Below 1 Ω K62-23 (SSW1) or K63-5 (SS1) - Other terminals and body ground Always 10 kΩ or higher K62-21 (SSW2) or K63-1 (SS2) - Other terminals and body ground Always 10 kΩ or higher K62-11 (AGND) or K63-6 (AGND) - Other terminals and body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    
    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

19. Click here

    INSPECT TRANSMITTER BATTERY

    
    

    1. Inspect the transmitter battery.

       Click here

       Note:

       Do not wrap the lead wire ground 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