ENTRY AND START SYSTEM(for Entry Function) Key Luggage Compartment Lock-in Prevention Function does not Operate

DESCRIPTION

If the entry luggage compartment lock-in prevention function does not operate, there may be a problem with the communication between the No. 3 indoor electrical key antenna assembly (inside luggage compartment) and electrical key transmitter sub-assembly, wave interference or a malfunction in the certification ECU (smart key ECU assembly).

WIRING DIAGRAM

*a	No. 3 Indoor Electrical Key Antenna Assembly (Inside Luggage Compartment)
*b	Certification ECU (Smart Key ECU Assembly)

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK ENTRY FUNCTION (ENTRY LUGGAGE COMPARTMENT OPEN FUNCTION)

   
   

   1. Check that the entry luggage compartment open function operates Click here.

      Result

      Result	Proceed to
      Entry luggage compartment door open function operates	A
      Entry luggage compartment door open function does not operate	B

   
   

   B

   GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table) Click here

   A

2. CHECK WAVE ENVIRONMENT

   
   
   1. 

      Text in Illustration

      *a	Inspection Point

      Bring the electrical key transmitter sub-assembly near the No. 3 indoor electrical key antenna assembly (inside luggage compartment), and check that the entry luggage compartment lock-in prevention function operates.

      Note

      If the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the No. 3 indoor electrical key antenna assembly (inside luggage compartment), communication is not possible.

      Tech Tips

      
      

      • When the electrical key transmitter sub-assembly is brought near the No. 3 indoor electrical key antenna assembly (inside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      OK
      Entry functions operate normally.

   
   

   OK

   AFFECTED BY WAVE INTERFERENCE

   NG

3. CHECK KEY DIAGNOSTIC MODE

   
   

   1. Check the following antennas in the key diagnostic mode Click here.

   2. 

      Text in Illustration

      *a	Inspection Point

      Select either channel 1 or channel 2 and inspect the key diagnostic mode for each channel.

      
      

      1. When the electrical key transmitter sub-assembly is held at the same height as the rear bumper upper surface and aligned with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds.

         Tech Tips

         
         

         • Place the key in the luggage area.

         • If the buzzer sounds, it can be determined that the No. 3 indoor electrical key antenna assembly (inside luggage compartment) is operating normally.

         • 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 door lock buzzer sounds.

   
   

   OK

   REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

   NG

4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY)

   
   

   1. Disconnect the N98 certification ECU (smart key ECU assembly) connector.

   2. Disconnect the T37 No. 3 indoor electrical key antenna assembly (inside luggage compartment) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition N98-4 (CLG7) - T37-1 (ANTE7) Always Below 1 Ω N98-3 (CG7B) -T37-3 (CLGB) Always Below 1 Ω N98-4 (CLG7) or T37-1 (ANTE7) - Body ground Always 10 kΩ or higher N98-3 (CG7B) or T37-3 (CLGB) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

5. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

   
   

   1. Connect the N98 certification ECU (smart key ECU assembly) connector.

   2. 

      Text in Illustration

      *1	Waveform
      *a	Front view of wire harness connector (to No. 3 Indoor Electrical Key Antenna Assembly [Inside Luggage Compartment])
      *b	Driver door lock sensor not touched
      *c	Driver door lock sensor touched

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

      OK
      Tester Connection Switch Condition Tool Setting Specified Condition T37-1 (ANTE7) - T37-3 (CLGB) Procedure: Power switch off Electrical key transmitter sub-assembly not inside vehicle All doors closed Driver door lock sensor not touched → touched 2 V/DIV., 500 ms/DIV. Pulse generation (See waveform)

   
   

   NG

   REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

   OK

6. REPLACE NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

   
   

   1. Replace the No. 3 indoor electrical key antenna assembly (inside luggage compartment) Click here.

   
   

   NEXT

7. CHECK NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

   
   

   1. Check that the entry luggage compartment lock-in prevention function operates normally Click here.

      OK
      Entry luggage compartment lock-in prevention function operates normally.

   
   

   OK

   END (NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY [INSIDE LUGGAGE COMPARTMENT] WAS DEFECTIVE)

   NG

   REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)