POWER BACK DOOR SYSTEM ECU Power Source Circuit

DESCRIPTION

This circuit supplies power to operate the power back door unit.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (ECU-B2, PBD, ECU-IG NO.4)

   
   

   1. Remove the ECU-B2 and PBD fuses from the engine room relay block.

   2. Remove the ECU-IG NO.4 fuse from the cowl side junction block RH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition ECU-B2 fuse Always Below 1 Ω PBD fuse Always Below 1 Ω ECU-IG NO.4 fuse Always Below 1 Ω

   
   

   NG

   REPLACE FUSE

   OK

2. CHECK HARNESS AND CONNECTOR (UNIT - BATTERY AND BODY GROUND)

   

   
   

   1. Disconnect the L36 unit connector.

   2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition L36-10 (ECUB) - Body ground Always 11 to 14 V L36-12 (B) - Body ground Always 11 to 14 V L36-8 (IG) - Body ground Engine switch on (IG) 11 to 14 V L36-8 (IG) - Body ground Engine switch off Below 1 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition L36-11 (GND) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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