Inspection Procedure

1. Check the wireless door lock control system (See OPERATION CHECK  ).

NG: Go to step 2 

OK: END 

1. Check that the door control transmitter's LED comes on 3 times when the switch is pressed 3 times.

   OK: The door control transmitter's LED comes on 3 times when the switch is pressed 3 times. 

NG: Go to step  8

OK: Go to next step 

1. Check that UNLOCK-LOCK operates in normal operation.

   HINT:

   Standardized test procedure: Press the transmitter switch for 1 second, directing the beam to the driver's door outside handle from a distance of 1 m (3.28 ft). The transmitter should be pointed directly at the door handle, i.e. at 90° angle to the vehicle body.

NG: REPLACE TRANSMITTER SUB-ASSEMBLY MODULE SET DOOR CONTROL 

OK: Go to next step 

1. Check if the wireless door lock buzzer sounds.

   Result 

   RESULT CHART
   
   

   Condition	Proceed To
   Buzzer sounds	A
   Buzzer does not sound	B (See NO ANSWER-BACK (HAZARD WARNING LIGHT AND WIRELESS DOOR LOCK BUZZER)  )

B:  GO TO PROBLEM SYMPTOMS TABLE 

A: Go to next step 

1. Switch to self-diagnostic mode using the Techstream.
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to the ON position and turn the Techstream main switch on.

      HINT:

      Refer to the Techstream operator's manual for further details.

2. Switch to self-diagnostic mode by performing the following:
   1. Put the vehicle under the initial condition (See OPERATION CHECK  ).
   2. Insert the key into the ignition key cylinder and remove it.
   3. Within 5 seconds after the key is removed, insert the key into the ignition key cylinder again.
   4. Turn the ignition switch to the ON position and turn it back to the LOCK position.
   5. Within 30 seconds of turning the ignition switch off again, perform the following 9 times: Turn the ignition switch to the ON position and turn it back to the LOCK position.

      HINT:

      • Turning the ignition switch to the ON position after step 5 has been completed will end the self-diagnostic mode.
      • Do not lock or unlock doors during the self-diagnostic mode.
      NOTE: If the self-diagnostic mode cannot be achieved, the system will return to normal mode.
3. Check that the system has switched to self-diagnostic mode by checking the sound of the wireless door lock buzzer.

   OK: The sound pattern of the wireless door lock buzzer should be the same as the patterns shown in the timing chart on the left. 

Fig 1: Buzzer Output ON/OFF Position
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step  10

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 sound of the wireless door lock buzzer.
   Fig 2: Buzzer Output ON/OFF Position

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result 

   RESULT CHART
   
   

   Condition	Proceed To
   Unmatched recognition code is output	A
   Normal waves patterns from the wireless door lock buzzer are output for LOCK, UNLOCK, PANIC and PWR DOOR	B
   No diagnostic outputs are recorded	C

B: REPLACE INSTRUMENT PANEL JUNCTION BLOCK 

C: Go to step  9

A: Go to next step 

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

   OK: The system can switch to the rewrite mode or add mode, and a recognition code can be registered. 

NG: Go to step  17

OK: END 

1. Replace the existing battery with a new or normally functioning one and check that the transmitter LED comes on 3 times when the switch is pressed 3 times.

NG: REPLACE TRANSMITTER SUB-ASSEMBLY MODULE SET DOOR CONTROL 

OK: REPLACE TRANSMITTER BATTERY 

1. Press and hold down any switch on a new or normal door control transmitter for the same vehicle type and check that an unmatched recognition code is output.

   OK: Unmatched recognition code is output. 

NG: Go to step  14

OK: REPLACE TRANSMITTER SUB-ASSEMBLY MODULE SET DOOR CONTROL 

1. Confirm input method for self-diagnostic mode.

   Result 

   RESULT CHART
   
   

   Condition	Proceed To
   Method for changing system self-diagnostic mode works	A
   Method for changing system self-diagnostic mode does not work	B

B: Go to step  5

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to the ON position and turn the Techstream main switch on.
3. Select the item below in the DATA LIST and read the display on the Techstream.

   Main Body: 

   DIAGNOSTIC NOTE
   
   

   Item (Display)	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   Key Unlock Warning SW	Unlock warning switch / ON or OFF	ON: Ignition key is inserted OFF: Ignition key is not inserted	-

   OK: When the ignition key is operated, the display changes as shown above. 

OK: Go to step  14

NG: Go to next step 

1. Disconnect the unlock warning switch connector.
2. Measure the resistance according to the value(s) in the table below.

   Resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   1 - 2	Switch pressed (Key set)	Below 1 Ω
   1 - 2	Switch free (Key removed)	10 kΩ or higher

Fig 3: Inspecting Unlock Warning Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE UNLOCK WARNING SWITCH 

OK: Go to next step 

1. Disconnect the multiplex network body ECU (B4) connector.
2. Measure the resistance according to the value(s) in the table below.

   Resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   B4-21 (KSW) - K4-2	Always	Below 1 Ω
   B4-21 (KSW) - Body ground	Always	10 kΩ or higher
   K4-1 - Body ground	Always	Below 1 Ω

Fig 4: Checking Harness And Connector (Multiplex Network Body ECU To Unlock Warning Switch)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the door control receiver connector.
2. Measure the voltage according to the value(s) in the table below.

   Voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   D3-5 (+B) - Body ground	Always	10 to 14 V

Fig 5: Inspecting Door Control Receiver (+B Terminal)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT) 

OK: Go to next step 

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

   Resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   D3-1 (E) - Body ground	Always	Below 1 Ω

Fig 6: Inspecting Door Control Receiver (E Terminal)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (E CIRCUIT) 

OK: Go to next step 

1. Disconnect the multiplex network body ECU (B6) connector.
2. Measure the resistance according to the value(s) in the table below.

   Resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   B6-11 (PRG) - D3-3 (PRG)	Always	Below 1 Ω
   B6-11 (PRG) - Body ground	Always	10 kΩ or higher
   B6-12 (RDA) - D3-2 (RDA)	Always	Below 1 Ω
   B6-12 (RDA) - Body ground	Always	10 kΩ or higher

Fig 7: Checking Harness And Connector (Multiplex Network Body ECU To Door Control Receiver)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

OK: The system returns to normal operation. 

NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK 

OK: REPLACE DOOR CONTROL RECEIVER