Check Body Integrated Unit Power Supply And Ground Circuit
WARNING: This page is about a different car, the 2021 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK POWER SUPPLY
.
- Disconnect the connector of body integrated unit.
- Measure the voltage between the body integrated unit connector and chassis ground.
Connector & terminal
(B152) No. 3 (+) - Chassis ground (-):
(B280) No. 1 (+) - Chassis ground (-):
(B281) No. 7 (+) - Chassis ground (-):
(B287) No. 4 (+) - 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 & terminal
(i84) No. 4 - Chassis ground:
(B287) 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.