Entry And Start System (For Entry Function) Back Door Entry Lock And Unlock Functions Do Not Operate

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK POWER DOOR LOCK CONTROL SYSTEM

CHECK FOR DTC

CHECK WAVE ENVIRONMENT

READ VALUE USING GTS (TR/B DOOR LOCK SW, TR/B DOOR UNLOCK SW)

CHECK KEY DIAGNOSTIC MODE

CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY ANTENNA [OUTSIDE LUGGAGE COMPARTMENT] - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY])

INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA [OUTSIDE LUGGAGE COMPARTMENT])

CHECK ENTRY LOCK OPERATION

CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH ASSEMBLY - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] AND BODY GROUND)

INSPECT BACK DOOR OPENER SWITCH ASSEMBLY

CHECK ENTRY LOCK OPERATION

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. The entry and start system (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly (Click here).
   
2. When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
   
3. Check that there are no electrical key transmitter sub-assemblies in the vehicle.
   
4. Before replacing the certification ECU (smart key ECU assembly), refer to entry and start system (for Entry Function) (Click here).
   
5. After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
   

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).
   

   OK:

   Door locks operate normally.
   

1. Check for DTCs (Click here).
   

   Result

   Result	Proceed to
   DTC B27A8 is not output	A
   DTC B27A8 is output	B

1. Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage compartment) and perform an entry back door open/lock function check (Click here).
   

   Text in Illustration

   *a	Approximately 0.3 m (0.984 ft.)

   HINT:

   1. Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the electrical key antenna (outside luggage compartment)
      
   2. When the electrical key transmitter sub-assembly is brought near the electrical key antenna (outside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      
   3. 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.
      
   4. 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.
      
   5. 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.
      
   6. When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively. (w/ Double Locking System)
      

   Result

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

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 / Entry&Start / Data List.
   

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

   Entry&Start

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Tr/B-Door Lock SW	Back door opener switch assembly (lock switch) / ON or OFF	ON: Back door opener switch assembly (lock switch) pressed OFF: Back door opener switch assembly (lock switch) not pressed	Displays whether the back door opener switch assembly (lock switch) is on or off. Use this Data List item to help determine if there is a switch malfunction when the back door lock function does not operate.
   Tr/B-Door Unlock SW	Back door opener switch assembly (open switch) / ON or OFF	ON: Back door opener switch assembly (open switch) pressed OFF: Back door opener switch assembly (open switch) not pressed	Displays whether the back door opener switch assembly (open switch) is on or off. Use this Data List item to help determine if there is a switch malfunction when the back door open function does not operate.

   OK:

   The GTS display changes correctly in response to the operation of the back door opener switch assembly.
   

1. Check the following antenna in key diagnostic mode.
   

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

   
   
   

   1. Check the electrical key antenna (outside luggage compartment):
      

      Text in Illustration

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

      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.
      

      HINT:

      1. Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
         
      2. 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 does not sound	A
      Wireless buzzer sounds	B

1. Disconnect the K48 electrical key antenna (outside luggage compartment) connector.
   

2. Disconnect the E129 certification ECU (smart key ECU assembly) connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   K48-2 (ANTE8) - E129-2 (CLG8)	Always	Below 1 Ω
   K48-1 (CLGB) - E129-1 (CG8B)	Always	Below 1 Ω
   K48-2 (ANTE8) or E129-2 (CLG8) - Body ground	Always	10 kΩ or higher
   K48-1 (CLGB) or E129-1 (CG8B) - Body ground	Always	10 kΩ or higher

4. Connect the E129 certification ECU (smart key ECU assembly) connector.
   

5. Disconnect the K48 electrical key antenna (outside luggage compartment) connector.
   

1. Using an oscilloscope, check the waveform.
   

   
   
   
   
   

   Text in Illustration

   *a

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

   b

   Waveform 1

   
   

   OK:

   
   

   Tester Connection	Switch Condition	Tool Setting	Specified Condition
   E129-2 (CLG8) - E130-11 (E)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed Back door opener switch assembly off → on	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)
   E129-1 (CG8B) - E130-11 (E)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed Back door opener switch assembly off → on	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)

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

1. Disconnect the S7 back door opener switch assembly connector.
   

2. Disconnect the E129 certification ECU (smart key ECU assembly) connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   S7-1 (L) - E129-13 (TSW6)	Always	Below 1 Ω
   S7-3 (UL) - E129-5 (TSW5)	Always	Below 1 Ω
   S7-2 (E) - Body ground	Always	Below 1 Ω
   S7-1 (L) or E129-13 (TSW6) - Body ground	Always	10 kΩ or higher
   S7-3 (UL) or E129-5 (TSW5) - Body ground	Always	10 kΩ or higher

1. Remove the back door opener switch assembly (Click here).
   

2. Inspect the back door opener switch assembly (Click here).
   

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