Only Wireless Control Function is Inoperative: Procedure

OK

Each function of wireless door lock control system operates normally using transmitter switches. Refer to ON-VEHICLE INSPECTION .

NG → See step   2 

OK → See step   16 

1. After replacing the transmitter battery, check that the doors can be locked and unlocked using the transmitter switches. Refer to REPLACEMENT .

   OK

   Doors can be locked and unlocked with transmitter.

NG → See step   3 

OK → END (TRANSMITTER BATTERY DEFECTIVE) 

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 of removing the key, insert the key into the ignition key cylinder (ignition switch OFF). Then turn the ignition switch ON and OFF.
   3. Within 30 seconds of turning the ignition switch OFF, perform the following operation 9 times: turn the ignition switch ON and OFF.
      NOTE:

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

      HINT: 

      • Turning the ignition switch 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 wireless door lock buzzer sound.
   Fig 1: Identifying Buzzer Output Graph (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   Buzzer pattern is same as illustration on left.

NG → See step   8 

OK: Go to next step 

1. Check the diagnostic outputs when the door control transmitter switch is held down. The diagnostic outputs can be checked by the wireless door lock buzzer sound.
   Fig 2: Identifying Buzzer Output Graph (2 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Result	Proceed to
   Unmatching recognition code is output	A
   Normal waves (buzzer patterns) for LOCK and UNLOCK switches are output	B
   No diagnosis outputs	C

B → END (TRANSMITTER BATTERY DEFECTIVE) 

C → See step   6 

A: Go to next step 

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

   OK

   Recognition code can be registered.

NG → See step   12 

OK → END 

1. When a new or normally functioning door lock control transmitter switch for the same vehicle type is held down, check that an unmatching recognition code is output.

   OK

   Unmatching recognition code is output.

NG → See step   7 

OK → See step   15 

1. After replacing the door control receiver, check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

   OK

   Doors can be locked and unlocked with transmitter.

NG → See step   15 

OK → END (DOOR CONTROL RECEIVER IS DEFECTIVE) 

1. Connect a Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the tester ON.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. According to the display on tester, perform the "Active Test".
   MAIN BODY:
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Wireless Buzzer	Sounds wireless buzzer	ON or OFF	-

   OK

   Wireless buzzer turns ON/OFF.

NG → See step   13 

OK: Go to next step 

1. Remove the unlock warning switch.
2. Measure the resistance.
   Fig 3: Inspecting Unlock Warning Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Not pushed	10 kΩ or higher
   	Pushed	Below 1 Ω

NG → See step   17 

OK: Go to next step 

1. Disconnect the E7 main body ECU connector.
   Fig 4: Identifying E7 Main Body ECU & E23 Door Control Receiver Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E23 door control receiver connector.
3. Measure the resistance.

   Standard resistance

   Tester Connection	Specified Condition
   E7-4 (RDA) - E23-2 (RDA)	Below 1 Ω
   E7-4 (RDA) or E23-2 (RDA) - Body ground	10 kΩ or higher
   E7-3 (PRG) - E23-3 (PRG)	Below 1 Ω
   E7-3 (PRG) or E23-3 (PRG) - Body ground	10 kΩ or higher

4. Reconnect the main body ECU connector.
5. Reconnect the door control receiver connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the voltage of the connector.
   Fig 5: Identifying Door Control Receiver Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Condition	Specified Condition
   E23-2 (RDA) - Body ground	Ignition switch off, all doors closed and transmitter switch not pressed	11 to 14 V
   	Ignition switch off, all doors closed and transmitter switch pressed	Pulse generation

NG → See step   12 

OK → REPLACE MAIN BODY ECU 

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 with transmitter.

NG → REPLACE DOOR CONTROL RECEIVER 

OK → END (DOOR CONTROL TRANSMITTER MODULE DEFECTIVE) 

Fig 6: Identifying Wireless Door Lock Buzzer Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A12 wireless door lock buzzer connector.
2. Measure the resistance.

   Standard resistance

   Tester Connection	Specified Condition
   1 - 2	Approximately 1 kΩ

3. Reconnect wireless door lock buzzer connector.

NG → See step   18 

OK: Go to next step 

Fig 7: Identifying Main Body ECU And Wireless Door Lock Buzzer Connectors Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A12 wireless door lock buzzer connector.
2. Disconnect the 1B main body ECU connector.
3. Measure the resistance.

   Standard resistance

   Tester Connection	Specified Condition
   1B-10 (BZR) - A12-1	Below 1 Ω
   1B-6 (BZR2) - A12-2	Below 1 Ω
   1B-10 (BZR) or A12-1 - Body ground	10 kΩ or higher
   1B-6 (BZR2) or A12-2 - Body ground	10 kΩ or higher

4. Reconnect the A12 wireless door lock buzzer connector.
5. Reconnect the 1B main body ECU connector.

NG → See step   17 

OK → REPLACE MAIN BODY ECU