Check Body Integrated Unit Power Supply And Ground Circuit

CHECK POWER SUPPLY .
1. Disconnect the connector of body integrated unit.
2. Measure the voltage between the body integrated unit connector and chassis ground.
Connector and 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.
CHECK GROUND CIRCUIT .
Measure the resistance between the body integrated unit connector and chassis ground.

Connector and 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.