Room Oscillator does not Recognize Key: Procedure

1. When the master switch assembly's door control switch is operated, check that the locked doors unlock.
   RESULT
   
   

   Result	Proceed to
   Door locks operate normally	OK
   Door locks do not operate normally	NG

NG → See step   10 

OK: Go to next step 

1. Using the Techstream, read the Data List.
   SMART ACCESS (CERTIFICATION ECU)
   
   

   Tester Display	Measurement Item/Display	Normal Condition
   Auto Entry Cancel SW	Entry function cancel / ON or OFF	Mode status is displayed

   RESULT
   
   

   Result	Proceed to
   Entry function is OFF	A
   Entry function is ON	B

B → See step   11 

A: Go to next step 

Fig 1: Checking Smart Access System With Push-Button Start

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the battery of the electrical key transmitter. Refer toREPLACEMENT .
2. Touch the LEXUS mark of the key or card key to the engine switch.
3. Check that the engine switch can be turned on (IG).
   RESULT
   
   

   Result	Proceed to
   Engine switch can be turned on (IG)	A
   Engine switch cannot be turned on (IG)	B

B → See step   12 

A: Go to next step 

1. Install the battery to the electrical key transmitter. Refer toREPLACEMENT .
2. Bring the electrical key transmitter near the indoor electrical key oscillator (in center console), and perform an engine start check.
   NOTE:

   If the key is brought within 0.2 m (0.6 ft.) of the center console, communication is not possible.

3. Bring the electrical key transmitter near the indoor electrical key oscillator (in rear seat cushion), and perform an engine start check.
   NOTE:

   If the key is brought within 0.2 m (0.6 ft.) of the rear seat cushion, communication is not possible.

   HINT: 

   • When the electrical key transmitter is brought near the indoor electrical key oscillator, 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.
   RESULT
   
   

   Result	Proceed to
   Both operation checks fail	A
   Operation check is normal	B

B → AFFECTED BY WAVE INTERFERENCE 

A: Go to next step 

1. Diagnostic mode inspection (front inside oscillator)
   Fig 2: Inspecting Entry Ignition Operation's Detection Area (Front Seat)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Connect the Techstream to the DLC3.
   2. Turn the engine switch on (IG).
   3. Turn the the Techstream on.
   4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Front Room.
   5. When the electrical key transmitter is placed on the driver seat or front passenger seat cushion, check that the wireless door lock buzzer sounds.
2. Diagnostic mode inspection (rear inside oscillator)
   Fig 3: Inspecting Entry Ignition Operation's Detection Area (Rear Seat) & Inspection Point

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Connect the Techstream to the DLC3.
   2. Turn the engine switch on (IG).
   3. Turn the the Techstream on.
   4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Rear Room.
   5. When the electrical key transmitter is placed on the rear seat cushion, check that the wireless door lock buzzer sounds.

      HINT: 

      If the buzzer sounds, it can be determined that the vehicle interior transmitters are operating normally.

      RESULT
      
      

      Result	Proceed to
      Front and rear operation check is normal	A
      Front and rear operation checks fail	B

A → REPLACE CERTIFICATION ECU 

B: Go to next step 

Fig 4: Checking Harness And Connector (Indoor Electrical Key Oscillator - Certification ECU)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the L74 and S10 oscillator connectors.
2. Disconnect the L15 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   FOR FRONT
   
   

   Tester Connection	Condition	Specified Condition
   L74-1 (CLG3) - L15-11 (CLG5)	Always	Below 1 Ω
   L74-3 (CLGB) - L15-12 (CG5B)	Always	Below 1 Ω
   L74-1 (CLG3) - Body ground	Always	10 kΩ or higher
   L74-3 (CLGB) - Body ground	Always	10 kΩ or higher

   FOR REAR
   
   

   Tester Connection	Condition	Specified Condition
   S10-1 (CLG4) - L15-13 (CLG6)	Always	Below 1 Ω
   S10-3 (CLGB) - L15-14 (CG6B)	Always	Below 1 Ω
   S10-1 (CLG4) - Body ground	Always	10 kΩ or higher
   S10-3 (CLGB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the indoor electrical key oscillator with a new one or normally functioning one.
2. Check that the entry function operates normally.

   OK

   Operates normally

NG → See step   8 

OK → END (INDOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

1. Replace the electrical key transmitter with a new one and perform the registration procedure. Refer toREGISTRATION .

NEXT: Go to next step 

1. Check the operation of the entry lock function.

   OK

   Operates normally

NG → REPLACE CERTIFICATION ECU 

OK → END (KEY IS DEFECTIVE)