POWER BACK DOOR SYSTEM Power Back Door Warning Buzzer Circuit

DESCRIPTION

The power back door unit assembly (power back door ECU) receives the power back door ON/OFF switch signal to sound the power back door warning buzzer.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   PERFORM ACTIVE TEST USING INTELLIGENT TESTER (PBD BUZZER)

   
   

   1. Select the Active Test, use the intelligent tester to generate a control command, and check that the power back door warning buzzer sounds (Click here).

      Table 1. Back Door

      Tester Display	Test Part	Control Range	Diagnostic Note
      PBD Buzzer	Operate warning buzzer	ON / OFF	-

      OK
      Power back door warning buzzer sounds normally.

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (POWER BACK DOOR WARNING BUZZER - POWER BACK DOOR UNIT ASSEMBLY AND BODY GROUND)

   
   

   1. Disconnect the K47 power back door warning buzzer connector.

   2. Disconnect the L52 power back door unit assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition K47-1 (BZR+) - L52-26 (BZR+) Always Below 1 Ω K47-2 (BZR-) - Body ground Always Below 1 Ω K47-1 (BZR+) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
3. Click here

   REPLACE POWER BACK DOOR WARNING BUZZER

   
   

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

   
   
   • NEXTClick here
4. Click here

   PERFORM ACTIVE TEST USING INTELLIGENT TESTER (PBD BUZZER)

   
   

   1. Select the Active Test, use the intelligent tester to generate a control command, and check that the power back door warning buzzer sounds (Click here).

      Table 2. Back Door

      Tester Display	Test Part	Control Range	Diagnostic Note
      PBD Buzzer	Operate warning buzzer	ON / OFF	-

      OK
      Power back door warning buzzer sounds normally.

   
   
   • OKClick here
   • NGClick here
5. Click here

   REPLACE POWER BACK DOOR UNIT ASSEMBLYClick here

6. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

7. Click here

   END (POWER BACK DOOR WARNING BUZZER IS DEFECTIVE)

8. Click here

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here