ENTRY AND START SYSTEM Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment

DESCRIPTION

When the entry luggage compartment open function does not operate, one of the following may be the cause: 1) luggage compartment door opener switch malfunction; 2) power trunk lid system malfunction; 3) communication malfunction between electrical key antenna and electrical key transmitter; 4) the power trunk lid ECU (luggage closer motor) receives the luggage electrical key switch ON signal, but is unable to send the signal to the certification ECU through CAN communication; or 5) certification ECU malfunction.

WIRING DIAGRAM

INSPECTION PROCEDURE

Note

Before replacing the television camera (luggage electrical key switch), refer to the parking assist monitor system initialization Click here.

PROCEDURE

CHECK ENTRY AND START SYSTEM
1. Check that the entry lock and unlock function can be operated at each door.
NG
GO TO DTC OF OTHER COMPONENTS (PROCEED TO PROBLEM SYMPTOM FLOWCHART FOR EACH DOOR)

OK
CHECK LUGGAGE DOOR OPENER OPERATION
1. When the luggage compartment door opener switch is operated, check that the luggage compartment door opens.
  
  OK
  
  Luggage compartment door opens
NG
GO TO POWER TRUNK LID SYSTEM Click here

OK

OK
Luggage compartment door opens

READ VALUE USING INTELLIGENT TESTER (BACK DOOR HANDLE SW)

Using the intelligent tester read the Data List.

Back Door
Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
Back Door Handle SW	Luggage electrical key switch / ON or OFF	ON: Luggage electrical key switch is pushed OFF: Luggage electrical key switch is not pushed	-

Tech Tips

For vehicles with the power trunk lid system, the Data List of the power trunk lid ECU can be used to check the luggage electrical key switch information. For vehicles without the power trunk lid system, the Data List of the luggage room junction block ECU can be used to check the luggage electrical key switch information.

OK
On intelligent tester screen, item changes between ON and OFF according to above chart.

INSPECT LUGGAGE ELECTRICAL KEY SWITCH Click here

CHECK WAVE ENVIRONMENT
1. Bring the electrical key transmitter near the electrical key antenna (in rear bumper), and perform an entry luggage compartment open function check.
  
  Note
  
  If the key is brought within 0.2 m (0.6 ft.) of the rear bumper, communication is not possible.
  Tech Tips
  
  When the electrical key transmitter is brought near the electrical key antenna, 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 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
  
  Luggage compartment door open.
NG
CHECK KEY DIAGNOSTIC MODE Click here

OK

AFFECTED BY WAVE INTERFERENCE
CHECK KEY DIAGNOSTIC MODE
1. Diagnostic mode inspection (rear inside oscillator)
  1. Connect the intelligent tester to the DLC3.
  2. Turn the power switch ON (IG).
  3. Turn the intelligent tester on.
  4. Enter the following menus:
    
    Select: Body / Entry&Start / Key Communication Check / Overhead + Luggage.
  5. When the electrical key transmitter 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
    
    If the buzzer sounds, it can be determined that the luggage compartment exterior transmitter is operating normally.
    
    *: For Europe and China, the wireless door lock buzzer does not sound.
    
    OK
    
    Wireless door lock buzzer sounds
NG
CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY ANTENNA - CERTIFICATION ECU) Click here

OK

REPLACE CERTIFICATION ECU

OK
Luggage compartment door open.

OK
Wireless door lock buzzer sounds

CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

Disconnect the R40 antenna connector.
Disconnect the L15 ECU connector.

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

Standard resistance

Tester Connection	Condition	Specified Condition
L15-31 (CLG8) - R40-1 (CLG5)	Always	Below 1 Ω
L15-32 (CG8B) - R40-2 (CLGB)	Always	Below 1 Ω
L15-31 (CLG8) - Body ground	Always	10 kΩ or higher
L15-32 (CG8B) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK ELECTRICAL KEY ANTENNA (OPERATION)
1. Replace the electrical key antenna with a new one or normally functioning one Click here.
2. Check that the entry luggage compartment open function operates normally.
  
  OK
  
  Operates normally
NG
CHECK LUGGAGE CLOSER MOTOR (OPERATION) Click here

OK

END (ELECTRICAL KEY ANTENNA IS DEFECTIVE)
CHECK LUGGAGE CLOSER MOTOR (OPERATION)
1. Replace the luggage closer motor with a new one or normally functioning one Click here.
2. Check that the entry luggage compartment open function operates normally.
  
  OK
  
  Operates normally
NG
REPLACE CERTIFICATION ECU

OK

END (LUGGAGE CLOSER MOTOR ASSEMBLY IS DEFECTIVE)

OK
Operates normally

OK
Operates normally

INSPECT LUGGAGE ELECTRICAL KEY SWITCH

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

Standard resistance

Tester Connection	Switch Condition	Specified Condition
5 - 10	OFF	Below 1 Ω
5 - 10	ON	10 kΩ or higher

REPLACE LUGGAGE ELECTRICAL KEY SWITCH Click here

CHECK HARNESS AND CONNECTOR (LUGGAGE ELECTRICAL KEY SWITCH - LUGGAGE CLOSER MOTOR)

Disconnect the S101 switch connector.
Disconnect the S43 ECU connector.

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

Standard resistance

Tester Connection	Condition	Specified Condition
S101-10 - Body ground	Always	Below 1 Ω
S101-5 - S43-19 (LPSW)	Always	Below 1 Ω
S101-5 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here