Only Wireless Control Function is Inoperative: Procedure

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

   OK

   Locked doors unlock.

NG → See step   20 

OK: Go to next step 

1. Check that the key reminder warning buzzer operates normally.

   OK

   Key reminder warning buzzer operates normally.

NG → See step   19 

OK: Go to next step 

1. When known good registered door control transmitter is used, check that the wireless functions operate normally.
   RESULT
   
   

   Result	Proceed to
   Wireless door LOCK/UNLOCK function operates normally with a known good door control transmitter.	A
   Wireless door LOCK/UNLOCK function does not operate.	B

B → See step   5 

A: Go to next step 

1. Inspect the battery capacity.
   1. Remove the battery from the electrical key transmitter that does not operate. Refer to REPLACEMENT . 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.
      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.
   Fig 1: Identifying Lead Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using an oscilloscope, check the transmitter battery voltage waveform.
   Fig 2: Checking The Transmitter Battery Voltage Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   Measure the transmitter battery voltage while pressing the LOCK or UNLOCK switch on the transmitter.

   Standard Voltage

   Item	Content
   Tester Connection	Battery positive (+) - Battery negative (-)
   Tool Setting	0.5 V/DIV., 100 ms/DIV.
   Condition	Ignition switch off, all doors closed and LOCK or UNLOCK switch is pressed
   Specified Condition	2.2 to 3.2 V (Refer to the waveform)

NG → See step   16 

OK → REPLACE DOOR CONTROL TRANSMITTER MODULE 

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

   HINT: 

   • When the 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 functions operate normally.

NG → See step   6 

OK → END (AFFECTED BY WAVE INTERFERENCE) 

1. Switch to self-diagnostic mode by operating the ignition key cylinder.
   1. Make sure that the vehicle is in its initial condition. Then insert the key into the ignition key cylinder and remove it.
   2. Within 5 seconds after removing the key, insert the key into the ignition key cylinder (ignition switch off). Then turn the ignition switch to ON and off.
   3. Within 30 seconds after turning the ignition switch off, perform the following operation 9 times: turn the ignition switch to ON and then off.
      NOTE:

      If the system cannot enter self-diagnostic mode, the system returns to normal mode.

      HINT: 

      • Turning the ignition switch to ON after the above operations have been completed ends self-diagnostic mode.
      • Do not lock or unlock doors during self-diagnostic mode.
2. Check that the system has switched to self-diagnostic mode by checking the room light output pattern.
   Fig 3: Checking The Room Light Output Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer output pattern.
   Fig 4: Checking The Wireless Door Lock Buzzer Output Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NEXT: Go to next step 

Fig 5: Identifying Interior Lights And The Buzzer Patterns Of The Wireless Door Lock Buzzer

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Inspect the diagnostic outputs when the door control transmitter switch is held down. The diagnostic outputs can be checked by the flash patterns of the interior lights and the buzzer patterns of the wireless door lock buzzer.
   RESULT
   
   

   Result	Proceed to
   Normal wave (light flash pattern and buzzer pattern) is output.	A
   Unmatching recognition code is output.	B
   No diagnostic outputs.	C

B → See step   8 

C → See step   9 

A → See step   17 

1. Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered. Refer to REGISTRATION .

   OK

   Recognition code can be registered.

NG → See step   13 

OK → END (GO TO OPERATION CHECK) 

1. Prepare the door control transmitter from another vehicle.
2. Press and hold down the door control transmitter switch.
3. Check that an unmatching recognition code is output.

   OK

   Unmatching recognition code is output.

NG → See step   10 

OK → REPLACE DOOR CONTROL TRANSMITTER MODULE 

1. Disconnect the door control receiver connector.
   Fig 6: Checking Harness And Connector (Door Control Receiver - Battery, Body Ground)

   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
   L26-1 (GND) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L26-5 (+B) - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Door Control Receiver)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 7: Checking Door Control Receiver (Output)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L26-2 (RDA) - Body ground	Ignition switch off, all doors closed and transmitter switch not pressed	10 to 14 V
   L26-2 (RDA) - Body ground	Ignition switch off, all doors closed and transmitter switch pressed	Pulse generation

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Door Control Receiver)

NG → See step   18 

OK: Go to next step 

1. Disconnect the D13 main body ECU connector and the L26 door control receiver connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D13-26 (RDA) - L26-2 (RDA)	Always	Below 1 Ω
   D13-26 (RDA) - Body ground	Always	10 kΩ or higher
   D13-25 (PRG) - L26-3 (PRG)	Always	Below 1 Ω
   D13-25 (PRG) - 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 or known good one. Refer to REMOVAL .

NEXT: Go to next step 

1. Perform the Registration procedure. Refer to REGISTRATION .

NEXT: Go to next step 

1. Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

   OK

   Doors can be locked and unlocked using transmitter.

NG → See step   17 

OK → END (DOOR CONTROL RECEIVER WAS DEFECTIVE)