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

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

   OK

   Locked doors unlock.

NG → See step   10 

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 does not operate	B

B → See step   5 

A: Go to next step 

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

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

   HINT: 

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

B → REPLACE DOOR CONTROL TRANSMITTER 

C → See step   11 

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.) or less in diameter including wire sheath) with tape or equivalent to the negative terminal, refer to REPLACEMENT .
      Fig 1: Attaching Lead Wire

      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

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Terminal No. (Symbol)	Tool Setting	Condition	Specified Condition
      Battery positive (+) - Battery negative (-)	0.5 V/DIV., 100 ms/DIV.	Engine switch off, all doors closed and lock switch pushed	2.5 to 3.2 V (Refer to the waveform)

NG → See step   11 

OK → REPLACE DOOR CONTROL TRANSMITTER 

1. Bring the door control transmitter near the door control receiver, and perform a wireless and entry function 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 IMB fuse from the engine room relay block.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   IMB fuse	Always	Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the E29 ECU connector.
   Fig 3: Identifying Certification ECU Connector Terminals (Smart Key ECU Assembly)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E29-17 (E) - Body ground	Always	Below 1 Ω

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E29-1 (+B) - Body ground	Always	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 4: Identifying Certification ECU (Smart Key ECU Assembly) And Door Control Receiver Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the L21 receiver connector.
2. Disconnect the E29 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E29-29 (RCO) - L21-4 (+5)	Always	Below 1 Ω
   E29-38 (RDA) - L21-5 (DATA)	Always	Below 1 Ω
   E29-39 (RSSI) - L21-2 (RSSI)	Always	Below 1 Ω
   E29-17(E) - Body ground	Always	Below 1 Ω
   L21-1 (GND) - Body ground	Always	Below 1 Ω
   E29-29 (RCO) or L21-4 (+5) - Body ground	Always	10 kΩ or higher
   E29-38 (RDA) or L21-5 (DATA) - Body ground	Always	10 kΩ or higher
   E29-39 (RSSI) or L21-2 (RSSI) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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   12 

OK → END (DOOR CONTROL RECEIVER IS DEFECTIVE)