Room Oscillator does not Recognize Key: Procedure

1. Check that the entry lock and unlock function can be operated at each door. Refer to OPERATION CHECK .

NG → See step   11 

OK: Go to next step 

1. Remove the battery of the electrical key transmitter. Refer to REPLACEMENT .
   Fig 1: Identifying Engine Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. With the brake pedal depressed, touch the LEXUS mark of the key to the engine switch.
3. When operating the engine switch, check whether the power source mode changes.

   OK

   Power source mode changes.

   HINT: 

   • When the electrical key transmitter cannot be verified even though it is in the operating range of the start function, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter and holding the transmitter against the engine switch.
   • When performing the check, if the power source mode changes, there is a problem with key certification inside the cabin.

NG → See step   12 

OK: Go to next step 

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

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

   OK

   Engine starts.

3. Bring the electrical key transmitter near the indoor electrical key antenna (in rear No. 1 seat cushion), and perform an engine control system start check.
   NOTE:

   If the key is brought within 0.2 m (0.656 ft.) of the rear No. 1 seat cushion, communication is not possible.

   OK

   Engine starts.

4. Bring the electrical key transmitter near the indoor electrical key antenna (in rear No. 2 seat cushion), and perform an engine control system start check.
   NOTE:

   If the key is brought within 0.2 m (0.656 ft.) of the rear No. 2 seat cushion, communication is not possible.

   HINT: 

   • When the electrical key transmitter is brought near the indoor 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

   Engine starts.

NG → See step   4 

OK → AFFECTED BY WAVE INTERFERENCE 

1. Diagnostic mode inspection (indoor electrical key antenna [for Front Floor]).
   Fig 2: Identifying Detection Area Of Entry Ignition Operation (Front Seat)

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   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 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 (indoor electrical key antenna [for Rear Floor]).
   Fig 3: Identifying Detection Area Of Entry Ignition Operation (Rear No. 1 Seat)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 Access / Smart Communication Check / Overhead + Rear Room.
   5. When the electrical key transmitter is placed on the rear no. 1 seat cushion, check that the wireless door lock buzzer sounds.
3. Diagnostic mode inspection (indoor electrical key antenna [for Luggage Compartment]).
   Fig 4: Identifying Detection Area Of Entry Ignition Operation (Rear No. 2 Seat)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 Access / Smart Communication Check / Overhead + Back Door (inside) Room.
   5. When the electrical key transmitter is placed on the rear no. 2 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.
   • It is possible to check which indoor electrical key antenna (front floor, rear floor and luggage compartment) is operating by sounding the buzzer.
   • If the buzzer does not sound for any indoor electrical key antennas, the certification ECU (smart key ECU assembly) circuit may have a malfunction.
   RESULT
   
   

   Result	Proceed to
   Front Floor operation check fails	A
   Rear Floor operation check fails	B
   Luggage compartment operation check fails	C
   Front floor, rear floor and luggage compartment operation checks are normal or fail	D

D → See step   13 

C → See step   9 

B → See step   7 

A: Go to next step 

Fig 5: Identifying E29 ECU And E96 Antenna Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E29 ECU connector.
2. Disconnect the E96 antenna connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E96-1 (CLG3) - E29-11 (CLG5)	Always	Below 1 Ω
   E96-3 (CLGB) - E29-12 (CG5B)	Always	Below 1 Ω
   E96-1 (CLG3) - Body ground	Always	10 kΩ or higher
   E96-3 (CLGB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 6: Identifying E29 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using an oscilloscope, check the waveform.

   OK

   Terminal No. (Symbol)	Tool Setting	Switch Condition	Specified Condition
   E29-11 (CLG5) - E29-12 (CG5B)	2 V/DIV., 2 μsec./DIV. (Reference)	Engine switch on (IG)	Waveform is as shown in the illustration

NG → See step   14 

OK → See step   15 

Fig 7: Identifying E29 ECU And L8 Antenna Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E29 ECU connector.
2. Disconnect the L8 antenna connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L8-1 (CLG4) - E29-13 (CLG6)	Always	Below 1 Ω
   L8-2 (CLGB) - E29-14 (CG6B)	Always	Below 1 Ω
   L8-1 (CLG4) - Body ground	Always	10 kΩ or higher
   L8-2 (CLGB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 8: Identifying E29 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using an oscilloscope, check the waveform.

   OK

   Terminal No. (Symbol)	Tool Setting	Switch Condition	Specified Condition
   E29-13 (CLG6) - E29-14 (CG6B)	2 V/DIV., 2 μsec./DIV. (Reference)	Engine switch on (IG)	Waveform is as shown in the illustration

NG → See step   16 

OK → See step   17 

Fig 9: Identifying E29 ECU And L9 Antenna Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E29 ECU connector.
2. Disconnect the L9 antenna connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L9-1 (CLG6) - E29-15 (CLG7)	Always	Below 1 Ω
   L9-2 (CLGB) - E29-16 (CG7B)	Always	Below 1 Ω
   L9-1 (CLG6) - Body ground	Always	10 kΩ or higher
   L9-2 (CLGB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 10: Identifying E29 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using an oscilloscope, check the waveform.

   OK

   Terminal No. (Symbol)	Tool Setting	Switch Condition	Specified Condition
   E29-15 (CLG7) - E29-16 (CG7B)	2 V/DIV., 2 μsec./DIV. (Reference)	Engine switch on (IG)	Waveform is as shown in the illustration

NG → See step   18 

OK → See step   19