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   19 

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   17 

OK: Go to next step 

1. When another registered door control transmitter is used, check that the wireless operates normally.

   Result

   Result	Proceed to
   Wireless door LOCK/UNLOCK function operates and door control transmitter that did not operate is electrical key 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 REMOVAL . 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 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 → AFFECTED BY WAVE INTERFERENCE 

OK: Go to next step 

1. Switch to self-diagnostic mode by operating the ignition key cylinder.
   1. Make sure 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: Room Light Blinking 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: Wireless Door Lock Buzzer Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NEXT: Go to next step 

Fig 5: Interior Lights And Buzzer Blinking Pattern

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 diagnosis outputs	C

B → See step   8 

C → See step   9 

A → REPLACE MAIN BODY ECU 

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.
   Fig 6: Identifying Door Control Receiver Connector Terminal

   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
   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
   5 (+B) - Body ground	Always	11 to 14 V

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: Identifying M12 Door Control Receiver Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   M12-2 (RDA) - Body ground	Transmitter switch OFF → ON (No key in ignition key cylinder, all doors closed)	10 to 14 V → Pulse generation

NG → See step   18 

OK: Go to next step 

1. Disconnect the E61 main body ECU connector and the M12 door control receiver connector.
   Fig 8: Identifying E61 Main Body ECU And M12 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
   E61-16 (RDA) - M12-2 (RDA)	Always	Below 1 Ω
   E61-16 (RDA) - Body ground	Always	10 kΩ or higher
   E61-17 (PRG) - M12-3 (PRG)	Always	Below 1 Ω
   E61-17 (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 lock 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 → REPLACE MAIN BODY ECU 

OK → END (DOOR CONTROL RECEIVER IS DEFECTIVE)