Inspection Procedure

1. Check that the wireless door lock control functions operate with a transmitter (see OPERATION CHECK  ).

   Result: 

   RESULT CHART
   
   

   Result	Proceed to
   Wireless door lock control functions operate normally but turn signal light answer-back does not occur	A
   Wireless door lock control functions operate normally but wireless door lock buzzer answer-back does not occur	B
   Wireless door lock control functions do not operate	C

B:  Go to step  5

C:  Go to PROBLEM SYMPTOMS TABLE 

A: Go to next step 

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

   OK: Turn signal lights flash continuously. 

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

OK: Go to next step 

1. Select ACTIVE TEST, use the Techstream to generate a control command, and then check that the turn signal lights flash.

   Main Body ECU RH: 

   MAIN BODY ECU RH ACTIVE TEST REFERENCE CHART
   
   

   Item	Test Details	Diagnostic Note
   HAZARD	Turn signal flasher relay ON / OFF	-

   OK: Turn signal lights flash. 

OK: REPLACE MAIN BODY ECU RH 

NG: Go to next step 

1. Disconnect the K67 ECU connector.
2. Disconnect the K25 relay connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Specified Condition
   K67-2 (HAZ) - K25-8 (HAZ)	Below 1 Ω
   K25-7 (E) - Body ground
   K67-2 (HAZ) or K25-8 (HAZ) - Body ground	10 kΩ or higher

Fig 1: Identifying K67 ECU And K25 Relay Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU RH 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the wireless door lock buzzer sound.

   Main Body ECU RH: 

   MAIN BODY ECU RH ACTIVE TEST REFERENCE CHART
   
   

   Item	Test Details	Diagnostic Note
   BUZZ RESP SOUND	Wireless door lock buzzer ON / OFF	-

   OK: Wireless door lock buzzer sounds and stops. 

OK: REPLACE MAIN BODY ECU RH 

NG: Go to next step 

1. Disconnect the A18 buzzer connector.
2. Disconnect the A39 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Specified Condition
   A18-1 (B) - A39-2 (BZR)	Below 1 Ω
   A18-2 (E) - Body ground
   A18-1 (B) or A39-2 (BZR) - Body ground	10 kΩ or higher

Fig 2: Identifying A18 Buzzer And A39 ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Temporarily replace the wireless door lock buzzer with a new or normally functioning one.
2. Check that the wireless door lock buzzer sounds by using the transmitter LOCK / UNLOCK switch.

   OK: Wireless door lock buzzer sounds. 

NG: REPLACE MAIN BODY ECU RH 

OK: END (WIRELESS DOOR LOCK BUZZER IS DEFECTIVE)