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

1. When the master switch assembly's door control switch is operated, check that the doors unlock and lock according to switch operation. Refer to OPERATION CHECK .

   OK

   Door locks operate normally.

NG → See step   11 

OK: Go to next step 

1. When another registered electrical key transmitter is used, check that the entry functions operate normally.

   Result

   Result	Proceed to
   Entry functions do not operate normally	A
   Entry functions operate normally	B

A → See step   5 

B: 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 illuminates 3 times when switch is pressed 3 times	A
   Transmitter's LED does not illuminate the second or third time	B
   Transmitter's LED does not illuminate when switch is pressed 3 times	C

   HINT: 

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

B → See step   12 

A → REPLACE ELECTRICAL KEY TRANSMITTER 

C: Go to next step 

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.
   Fig 1: Identifying Lead Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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. 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 see below.
   Fig 2: Checking Transmitter Battery Voltage Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   When measuring the battery voltage, while operating the lock switch of a door outside 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 .

   Standard Voltage

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

NG → See step   12 

OK → REPLACE ELECTRICAL KEY TRANSMITTER 

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

   HINT: 

   When the electrical key 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.

   Result

   Result	Proceed to
   Operation check is normal	A
   Operation check fails	B

   HINT: 

   If the inspection result indicates 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.

A → AFFECTED BY WAVE INTERFERENCE 

B: Go to next step 

1. Remove the ECU-B2 fuse from the main body ECU (instrument panel junction block).
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   ECU-B2 fuse	Always	Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the certification ECU (smart key ECU assembly) connector.
   Fig 3: Identifying Certification ECU (Smart Key ECU Assembly) Connector Terminals

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E36-1 (+B) - Body ground	Always	11 to 14 V

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E36-17 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the door control receiver connector.
   Fig 4: Identifying Certification ECU (Smart Key ECU Assembly) And Door Control Receiver Connector Terminals

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E36-39 (RSSI) - M14-5 (RSSI)	Always	Below 1 Ω
   E36-38 (RDA) - M14-3 (DATA)	Always	Below 1 Ω
   E36-29 (RC0) - M14-2 (+5)	Always	Below 1 Ω
   E36-39 (RSSI) - Body ground	Always	10 kΩ or higher
   E36-38 (RDA) - Body ground	Always	10 kΩ or higher
   E36-29 (RC0) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the door control receiver. Refer to REMOVAL .

NEXT: Go to next step 

1. Check that the entry functions operate normally.

   OK

   Entry functions operate normally.

NG → See step   13 

OK → END (DOOR CONTROL RECEIVER IS DEFECTIVE)