Check Body Integrated Unit Power Supply And Ground Circuit

1. Disconnect the connector of body integrated unit.
2. Measure the voltage between the body integrated unit connector and chassis ground.

   Connector & terminal 

   (B71) No. 1 (+) - Chassis ground (-):

   (B73) No. 7 (+) - Chassis ground (-):

   (B72) No. 4 (+) - Chassis ground (-):

   (B2) No. 3 (+) - Chassis ground (-):

Is the voltage 9 V or more?

Yes  : Go to  2.

No  : Check the harness for open or short circuit between body integrated unit and fuse.

Measure the resistance between the body integrated unit connector and chassis ground.

Connector & terminal 

(i81) No. 4 - Chassis ground:

(B72) No. 1 - Chassis ground:

Is the resistance less than 10 Ω?

Yes  : The power supply and ground circuit are OK.

No  : Repair or replace the harness.