Smart Key System (For Entry Function) Luggage Compartment Door Entry Unlock Function Does Not Operate When Key Is Outside Luggage Compartment

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SMART KEY SYSTEM (Entry Function)

READ VALUE USING TECHSTREAM (LUGGAGE COMPARTMENT DOOR OPENER SWITCH)

PERFORM ACTIVE TEST USING TECHSTREAM

CHECK WAVE ENVIRONMENT

PERFORM KEY DIAGNOSTIC MODE INSPECTION

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - OUTSIDE ELECTRICAL KEY OSCILLATOR)

REPLACE OUTSIDE ELECTRICAL KEY OSCILLATOR (Luggage Compartment)

CHECK OUTSIDE ELECTRICAL KEY OSCILLATOR (OPERATION)

INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - LUGGAGE COMPARTMENT DOOR LOCK)

INSPECT LUGGAGE COMPARTMENT DOOR OPENER OUTER SWITCH

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - LUGGAGE COMPARTMENT DOOR OPENER SWITCH)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Check that entry lock and unlock functions can be operated at each door.
   

   OK:

   Entry lock and unlock functions operate normally.
   

1. Connect the Techstream to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the Techstream on.
   

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

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

   Smart Key (Certification ECU (Smart Key ECU Assembly))

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Tr/B-Door Unlock SW	Luggage compartment door opener switch / ON or OFF	ON: Luggage compartment door opener outer switch is pushed OFF: Luggage compartment door opener outer switch is not pushed	-

   OK:

   On the Techstream screen, the item changes between ON and OFF according to above chart.
   

1. Connect the Techstream to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the Techstream on.
   

4. Enter the following menus: Body Electrical / Main Body / Active Test.
   

5. Perform the Active Test according to the display on the Techstream.
   
   

   Main Body (Main Body ECU (Instrument Panel Junction Block))

   Tester Display	Test Part	Control Range	Diagnostic Note
   Trunk and Back-door Open	Luggage compartment open switch	ON/OFF	-

   OK:

   Luggage compartment door lock motor operates according to the Techstream operation.
   

1. Bring the electrical key transmitter near the outside electrical key oscillator (luggage compartment), and perform an entry luggage compartment open function check.
   

   NOTICE:

   If the key is brought within 0.2 m (0.656 ft) of the rear bumper, communication is not possible.

   HINT:

   1. When the electrical key transmitter is brought near the outside electrical key oscillator, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      
   2. If the operation 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.
   

1. Diagnostic mode inspection (outside electrical key oscillator (luggage compartment))
   

   1. Connect the Techstream to the DLC3.
      

   2. Turn the engine switch on (IG).
      

   3. Turn the Techstream on.
      

   4. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (outside).
      

   5. When the electrical key transmitter is held at the same height as the rear bumper upper surface aligning it with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds.
      

      HINT:

      If the buzzer sounds, it can be determined that the luggage compartment exterior transmitter is operating normally.

      OK:

      Wireless door lock buzzer sounds.
      

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

2. Disconnect the outside electrical key oscillator connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E36-32 (CG8B) - M13-2 (CLGB)	Always	Below 1 Ω
   E36-31 (CLG8) - M13-1 (CLG5)	Always	Below 1 Ω
   E36-32 (CG8B) - Body ground	Always	10 kΩ or higher
   E36-31 (CLG8) - Body ground	Always	10 kΩ or higher

1. Replace the outside electrical key oscillator (luggage compartment) (COROLLA_ZRE142 RM000002XQD01CX.html).
   

1. Check that the entry functions operate normally.
   

   OK:

   Entry functions operate normally.
   

1. Remove the luggage compartment door lock assembly (COROLLA_ZRE142 RM000002Y9Q010X.html).
   

2. Check the operation of the door lock motor.
   

   1. Move the door lock to the lock position.
      

   2. Apply battery voltage to the door lock motor and check the operation of the door lock motor.
      

      OK:

      Measurement Condition	Specified Condition
      Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2	Unlock

3. Check the operation of the door courtesy switch.
   

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

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      2 - 3	Unlock	Below 1 Ω
      2 - 3	Lock	10 kΩ or higher

1. Luggage compartment door lock motor:
   

   
   
   

   1. Disconnect the main body ECU (instrument panel junction block) connector.
      

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

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      E50-1 (TR+) - L18-1 (ACT+)	Always	Below 1 Ω
      E50-1 (TR+) - Body ground	Always	10 kΩ or higher

2. Luggage compartment door courtesy switch:
   

   
   
   

   1. Disconnect the instrument panel junction block connector.
      

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

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      L18-2 (E) - Body ground	Always	Below 1 Ω
      2A-7 (LGCY) - L18-3 (D+)	Always	Below 1 Ω
      2A-7 (LGCY) - Body ground	Always	10 kΩ or higher

1. Disconnect the luggage compartment door opener outer switch connector.
   

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

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   1 - 2	Luggage compartment door opener outer switch not pushed (OFF)	10 kΩ or higher
   1 - 2	Luggage compartment door opener outer switch pushed (ON)	Below 1 Ω

1. Disconnect the 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
   L26-1 - Body ground	Always	Below 1 Ω
   L26-2 - E36-7 (TSW5)	Always	Below 1 Ω
   L26-2 - Body ground	Always	10 kΩ or higher