Wireless Door Lock Control System (W/O Smart Key System) Only Wireless Control Function Is Inoperative

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK POWER DOOR LOCK OPERATION

CHECK KEY REMINDER WARNING SYSTEM

CHECK DOOR CONTROL TRANSMITTER ASSEMBLY

CHECK TRANSMITTER BATTERY

CHECK WAVE ENVIRONMENT

SWITCH TO SELF-DIAGNOSTIC MODE

CHECK SELF DIAGNOSTIC MODE

REGISTER RECOGNITION CODE

CHECK DOOR CONTROL RECEIVER (RESPONSE)

CHECK DOOR CONTROL RECEIVER (+B, GND)

CHECK DOOR CONTROL RECEIVER (OUTPUT)

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL RECEIVER)

REPLACE DOOR CONTROL RECEIVER

REGISTER RECOGNITION CODE

CHECK DOOR CONTROL RECEIVER (OPERATION)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. When the door control switch on the master switch assembly is operated, check that the locked doors unlock (COROLLA_ZRE142 RM000001333049X.html).
   

   OK:

   Locked doors unlock.
   

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

   OK:

   Key reminder warning buzzer operates normally.
   

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

1. Inspect the battery capacity.
   

   1. Remove the battery from the electrical key transmitter that does not operate (COROLLA_ZRE142 RM000001J7M02PX.html). 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.
      

      NOTICE:

      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 waveform.
   

   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)

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

   HINT:

   1. 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.
      
   2. 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.
   

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.
      

      NOTICE:

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

      HINT:

      1. Turning the ignition switch to ON after the above operations have been completed ends self-diagnostic mode.
         
      2. 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.
   

3. Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer output pattern.
   

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

1. Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered (COROLLA_ZRE142 RM0000023D303HX.html).
   

   OK:

   Recognition code can be registered.
   

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.
   

1. Disconnect the door control receiver.
   

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

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

   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

1. Disconnect the E61 main body ECU connector and the M12 door control receiver connector.
   

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

1. Temporarily replace the door lock control receiver with a new or known good one (COROLLA_ZRE142 RM0000030UM01FX.html).
   

1. Perform the Registration procedure (COROLLA_ZRE142 RM0000023D303HX.html).
   

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.