POWER BACK DOOR SYSTEM Power Back Door Warning System does not Operate

DESCRIPTION

When the power back door warning system does not operate, one of the following may be malfunctioning: 1) wireless door lock control system, 2) power back door warning buzzer circuit or 3) multiplex network door ECU.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK OPERATION

   
   

   1. Check power back door system operation.

      Click here

      Result
      Result Proceed to Hazard warning light does not come on (w/ Power Back Door Hazard Warning Light) A Power back door warning buzzer does not operate B

   
   

   B

   PERFORM ACTIVE TEST USING GTS Click here

   A

2. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION)

   
   

   1. Check wireless door lock operation.

      Click here

      OK
      Hazard answer-back function operates normally

      Result
      Proceed to OK NG

   
   

   NG

   GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Click here

   OK

3. REPLACE MULTIPLEX NETWORK DOOR ECU

   
   

   1. Temporarily replace the multiplex network door ECU with a new or normally functioning one.

      Click here

      Result
      Proceed to NEXT

   
   

   NEXT

4. INITIALIZE MULTIPLEX NETWORK DOOR ECU

   
   

   1. Perform the initialization for the multiplex network door ECU.

      Click here

      Result
      Proceed to NEXT

   
   

   NEXT

5. CHECK POWER BACK DOOR SYSTEM

   
   

   1. Check that the power back door hazard warning lights operate normally.

      Click here

      OK
      The power back door hazard warning lights operate normally

      Result
      Result Proceed to OK A NG (for LHD) B NG (for RHD) C

   
   

   A

   END (MULTIPLEX NETWORK DOOR ECU WAS DEFECTIVE)

   B

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   C

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

6. PERFORM ACTIVE TEST USING GTS

   
   

   1. Check the Data List for proper functioning of the wireless door lock buzzer.

      Click here

      
      Body Electrical > Back Door > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      PBD Buzzer	Power back door warning buzzer sound	ON or OFF	-

      
      Body Electrical > Back Door > Active Test

      Tester Display
      PBD Buzzer

      OK
      Power back door warning buzzer sounds

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE MULTIPLEX NETWORK DOOR ECU Click here

   NG

7. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR WARNING BUZZER - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)

   
   

   1. Disconnect the Y14 power back door warning buzzer connector.

   2. Disconnect the Y16 multiplex network door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Y14-1 (BZR+) - Y16-5 (BZR+) Always Below 1 Ω Y14-2 (BZR-) - Body ground Always Below 1 Ω Y14-1 (BZR+) or Y16-5 (BZR+) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

8. REPLACE POWER BACK DOOR WARNING BUZZER

   
   

   1. Temporarily replace the power back door warning buzzer with a new or normally functioning one.

      Click here

      Result
      Proceed to NEXT

   
   

   NEXT

9. CHECK POWER BACK DOOR SYSTEM

   
   

   1. Check that the power back door warning buzzer operates normally.

      Click here

      OK
      Power back door warning buzzer sounds

      Result
      Proceed to OK NG

   
   

   OK

   END (POWER BACK DOOR WARNING BUZZER WAS DEFECTIVE)

   NG

   REPLACE MULTIPLEX NETWORK DOOR ECU Click here