Inspection Procedure

1. Check the wireless door lock control functions (see OPERATION CHECK  ).

   OK: Each function of wireless door lock control system operates normally using transmitter switch. 

NG: Go to step 2 

OK : USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )

1. When another registered door control transmitter is used, check that the wireless door lock function operates normally (see OPERATION CHECK  ).

   OK: Wireless door lock function operates normally. 

NG:  Go to step  4

OK: Go to Next Step 

1. Remove the battery from the door control transmitter module that does not operate. 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 (see INSPECTION  ).
2. Install the previously removed transmitter battery.
   Fig 1: Attaching Lead Wire To Negative Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using an oscilloscope, check the transmitter battery voltage waveform.

   HINT:

   When measuring the battery voltage, press one of the transmitter switches.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Item	Content
   Tester Connection	Battery positive (+) - Battery negative (-)
   Tool Setting	0.5 V/DIV., 100 ms/DIV.
   Condition	Press one of the transmitter switches
   Specified Condition	2.2 to 3.2 V (Refer to the wave form)

NG: REPLACE TRANSMITTER BATTERY  (See REPLACEMENT  )

Fig 2: Checking Transmitter Battery Voltage Waveform

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE DOOR CONTROL TRANSMITTER  (See REMOVAL  )

1. Check that the room light illumination operates normally.

   OK: Room light operation normal. 

NG: Go to LIGHTING SYSTEM (PROBLEM SYMPTOMS TABLE)  (See PROBLEM SYMPTOMS TABLE )

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 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.
        Fig 3: Identifying Interior Light Flashes

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that the system has switched to self-diagnostic mode by checking the room light flash pattern.

   OK: Flash pattern is same as illustration. 

NG:  Go to step  12

OK: Go to Next Step 

Fig 4: Identifying Interior Light Flashes

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Inspect the diagnosis outputs when the door control transmitter switch is held down. The diagnosis outputs can be checked by the flash patterns of the room light.

   Result: 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Unmatching recognition code is output	A
   Normal waves (light flash patterns) are output	B
   No diagnosis outputs	C

B : REPLACE MAIN BODY ECU 

C:  Go to step  8

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 (see REGISTRATION  ).

   OK: Recognition code can be registered. 

NG:  Go to step  15

OK : END 

1. Prepare the door control transmitter of another vehicle.
2. Held down the door control transmitter switch.
3. Check that an unmatching recognition code is output.

   OK: Unmatching recognition code is output. 

NG: Go to step 9 

OK : REPLACE UNLOCK WARNING SWITCH  (See REMOVAL  )

1. Temporarily replace the door lock control receiver with a new or normally functioning one (see REMOVAL  ).

1. Perform the REGISTRATION procedures (see REGISTRATION  ).

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 MAIN BODY ECU 

OK : END (DOOR CONTROL RECEIVER IS DEFECTIVE) 

1. Remove the unlock warning switch (see REMOVAL  ).
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   1 - 2	Free	10 kΩ or higher
   	Pushed	Below 1 Ω

3. Reconnect the unlock warning switch.

NG: REPLACE UNLOCK WARNING SWITCH  (See REMOVAL  )

Fig 5: Inspecting Unlock Warning Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the F21 unlock warning switch connector.
2. Disconnect the 4D main body ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   4D-7 (KSW) - F21-1	Always	Below 1 Ω
   F21-2 - Body ground
   4D-7 (KSW) or F21-1 - Body ground	Always	10 kΩ or higher

4. Reconnect the unlock warning switch connector.
5. Reconnect the main body ECU connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 6: Identifying Main Body ECU And Unlock Warning Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

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

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   L15-2 (RDA) - Body ground	Transmitter switch ON → OFF (No key in ignition key cylinder, all doors closed)	Below 1 V → 6 to 7 V → Below 1 V

NG: Go to step 15 

Fig 7: Identifying Door Control Receiver Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE MAIN BODY ECU 

1. Temporarily replace the door control transmitter module with a new or normally functioning one.

1. Perform the REGISTRATION procedures (see REGISTRATION  ).

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  (See REMOVAL  )

OK: Go to Next Step