Inspection Procedure

1. Check the wireless door lock functions by operating the transmitter switches.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Wireless door lock functions are normal	A
   Wireless door lock functions are abnormal	B

B: GO TO  PROBLEM SYMPTOMS TABLE  

A: Go TO NEXT STEP 

1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the wireless door lock buzzer sounds.

   BODY 

   ACTIVE TEST DETAIL (BODY)
   
   

   Item	Test Details	Diagnostic Note
   HAZARD	Turns turn signal flasher relay ON/OFF	-
   BUZZ CONT SOUND	Wireless door lock buzzer (continuous) ON/OFF	-
   BUZZ RESP SOUND	Wireless door lock buzzer (beep) ON/OFF	-

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Hazard warning light answer-back function does not operate	A
   Wireless door lock buzzer answer-back function does not operate	B
   Hazard warning light and wireless door lock buzzer answer-back function is normal	C

B:  Go to step  4

C: REPLACE MAIN BODY ECU 

A: Go TO NEXT STEP 

1. Check that the hazard warning lights flash when the hazard warning signal switch is pressed.

   OK: 

   Hazard warning lights flash when hazard warning signal switch is pressed. 

NG: GO TO  LIGHTING SYSTEM 

OK: REPLACE MAIN BODY ECU 

1. Disconnect the clutch switch connector.
   Fig 1: Identifying Wireless Door Lock Buzzer Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   1-2	Below 1 Ω

NG: REPLACE WIRELESS DOOR LOCK BUZZER 

OK: Go TO NEXT STEP 

1. Disconnect the A12 buzzer connector.
2. Disconnect the 1B main body ECU connector.
   Fig 2: Identifying 1B Main Body ECU & A12 Wireless Door Lock Buzzer Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   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 buzzer connector.
5. Reconnect the main body ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU