All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate: Procedure

1. When the master switch's door control switch is operated, check that the locked doors unlock. Refer to OPERATION CHECK .

   OK

   Locked doors unlock.

NG → See step   13 

OK: Go to next step 

1. When another registered door control transmitter is used, check that the wireless and entry function operates normally. Refer to OPERATION CHECK .
   RESULT
   
   

   Result	Proceed to
   Entry function operates and door control transmitter that did not operate is electrical key transmitter	A
   Entry function operates and door control transmitter that did not operate is card key	B
   Entry function does not operate	C

C → See step   5 

B → See step   4 

A: Go to next step 

1. Check that the transmitter's LED illuminates 3 times when the switch is pressed 3 times.
   RESULT
   
   

   Result	Proceed to
   Transmitter's LED does not illuminate 3 times when switch is pressed 3 times	A
   Transmitter's LED illuminates 3 times when switch is pressed 3 times	B
   The transmitter's LED does not illuminate the second or third time	C

   HINT: 

   If the transmitter's LED does not illuminate the second or third time, replace the transmitter battery as it is depleted.

C → See step   14 

B → REPLACE DOOR CONTROL TRANSMITTER 

A: Go to next step 

1. Electrical key transmitter
   1. Remove the battery from the electrical key transmitter that does not operate. Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal. Refer to REMOVAL .
      Fig 1: Identifying Electrical Key Transmitter

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

   2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.
   3. Using an oscilloscope, check the transmitter battery voltage waveform.

      HINT: 

      When measuring the battery voltage, while operating the lock switch of a door handle, bring the electrical key transmitter within the entry operating range to perform the measurement. For the entry operating range, refer to SYSTEM DESCRIPTION. Refer to SYSTEM DESCRIPTION .

      Fig 2: Checking Transmitter Battery Voltage Waveform

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage

      Item	Content
      Tester Connection	Battery positive (+) - Battery negative (-)
      Tool Setting	0.5 V/DIV., 100 ms/DIV.
      Condition	Power switch OFF, all doors closed and lock switch pushed
      Specified Condition	2.2 to 3.2 V (Refer to the wave form)

2. Card type key
   1. Remove the battery from the card key that does not operate. Attach a lead wire to the negative and positive side of the battery with tape or equivalent. Refer to REMOVAL .
      NOTE:

      Do not wrap the lead wire around a terminal, wedge it between the terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

   2. Using an oscilloscope, check the transmitter battery voltage waveform.

      HINT: 

      When measuring the battery voltage, while operating the lock switch of a door handle, bring the card key within the entry operating range to perform the measurement. For the entry operating range, refer to SYSTEM DESCRIPTION. Refer to SYSTEM DESCRIPTION .

      Fig 3: Checking Transmitter Battery Voltage Waveform

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage

      Item	Content
      Tester Connection	Battery positive (+) - Battery negative (-)
      Tool Setting	0.5 V/DIV., 100 ms/DIV.
      Condition	Power switch OFF, all doors closed and lock switch pushed
      Specified Condition	2.2 to 3.2 V (Refer to the waveform)

      NOTE:

      Before measuring the battery voltage, make sure that the positive side of the battery is set towards the LEXUS mark side.

NG → See step   14 

OK → REPLACE DOOR CONTROL TRANSMITTER 

1. Bring the door control transmitter near the door control receiver, and perform a wireless and smart operation check.

   HINT: 

   • When the door control transmitter is brought near the door control receiver, 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 problem only occurs in certain locations or times of day, 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

   Wireless and entry functions operate normally.

NG → See step   6 

OK → AFFECTED BY WAVE INTERFERENCE 

1. Remove the P MPX-B fuse from the passenger side junction block.
2. Remove the SECURITY fuse from the main body ECU (driver side junction block).
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   P MPX-B fuse	Always	Below 1 Ω
   SECURITY fuse	Always	Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the L15 ECU connector.
   Fig 4: Identifying L15 ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance and voltage according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   L15-17 (E) - Body ground	Always	Below 1 Ω

   Standard voltage

   Tester Connection	Condition	Specified Condition
   L15-20 (CUTB) - Body ground	Always	11 to 14 V
   L15-1 (+B1) - Body ground	Always	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 5: Identifying L15 ECU Connector Terminals And R37 Receiver Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the R37 receiver connector.
2. Disconnect the L15 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   L15-29 (RCO) - R37-2 (+5)	Always	Below 1 Ω
   L15-38 (RDA) - R37-3 (DATA)	Always	Below 1 Ω
   L15-37 (ASEL) - R37-4 (ASEL)	Always	Below 1 Ω
   L15-39 (RSSI) - R37-5 (RSSI)	Always	Below 1 Ω
   L15-17(E) - Body ground	Always	Below 1 Ω
   R37-6 (GND) - Body ground	Always	Below 1 Ω
   L15-29 (RCO) or R37-2 (+5) - Body ground	Always	10 kΩ or higher
   L15-38 (RDA) or R37-3 (DATA) - Body ground	Always	10 kΩ or higher
   L15-37 (ASEL) or R37-4 (ASEL) - Body ground	Always	10 kΩ or higher
   L15-39 (RSSI) or R37-5 (RSSI) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Visually inspect the entire window glass antenna wire's lines for breaks.
   Fig 6: Identifying Window Glass Antenna Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using the tester, check that the window glass antenna wire's lines do not have continuity breaks.
   Fig 7: Inspecting Continuity At Center Of Antenna Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   Fig 8: Pressing Tin Foil

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   • Wrap a piece of tin foil around the tip of the negative (-) tester probe as shown in the illustration. Press the foil against the wire's lines with your finger without damaging the wire, and inspect the wire.
   • If foreign matter on the glass needs to be cleaned, use a soft, dry cloth to wipe the glass along the wire's lines without damaging the wire.
   • Do not use standard detergents or glass cleaners.
   1. Move the tin foil wrapped probe along the wire's lines, and check for line breaks.

      OK

      Based on visual inspection and tester inspection, wire line breaks are not present.

NG → See step   16 

OK: Go to next step 

1. Disconnect the R37 receiver connector.
   Fig 9: Identifying R37 Receiver And R69 Antenna Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the R69 antenna connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   R37-7 - R69-1	Always	Below 1 Ω
   R37-7 or R55-1 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Temporarily replace the amplifier antenna with a new one. Refer to REMOVAL .
2. Check that the wireless and entry functions operate normally.

   OK

   Wireless and entry functions operate normally

NG → See step   12 

OK → END (AMPLIFIER ANTENNA IS DEFECTIVE) 

1. Temporarily replace the door control receiver with a new one. Refer to REMOVAL .
2. Check that the wireless and entry functions operate normally.

   OK

   Wireless and entry functions operate normally

NG → See step   15 

OK → END (DOOR CONTROL RECEIVER IS DEFECTIVE)