Smart Key System (For Entry Function) Key Luggage Compartment Lock-In Prevention Function Does Not Operate

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SMART KEY SYSTEM (Entry Function)

CHECK WAVE ENVIRONMENT

PERFORM KEY DIAGNOSTIC MODE INSPECTION

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

REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (Luggage Compartment)

CHECK INDOOR ELECTRICAL KEY OSCILLATOR (OPERATION)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Check that the luggage compartment door entry unlock function operates.
   

   Result:

   Result	Proceed to
   Luggage compartment door entry unlock function does not operate	A
   Luggage compartment door entry unlock function operates	B

1. Bring the electrical key transmitter near the indoor electrical key oscillator (luggage compartment), and check that the key luggage compartment lock-in prevention function operates.
   

   NOTICE:

   If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator, communication is not possible.

   HINT:

   1. When the electrical key transmitter is brought near the indoor electrical key oscillator (luggage compartment), 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:

   Key lock-in prevention function operates normally.
   

1. Diagnostic mode inspection (indoor electrical key oscillator)
   

   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 (inside).
      

   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 interior transmitter is operating normally.

      OK:

      Wireless door lock buzzer sounds.
      

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

2. Disconnect the indoor electrical key oscillator connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E36-16 (CG7B) - M17-3 (CLGB)	Always	Below 1 Ω
   E36-15 (CLG7) - M17-1 (CLG6)	Always	Below 1 Ω
   E36-16 (CG7B) - Body ground	Always	10 kΩ or higher
   E36-15 (CLG7) - Body ground	Always	10 kΩ or higher

1. Replace the indoor electrical key oscillator (luggage compartment) (COROLLA_ZRE142 RM0000030OE00LX.html).
   

1. Check that the entry functions operate normally.
   

   OK:

   Entry functions operate normally.