S80 AWD V8-4.4L VIN 85 B8444S (2008)
Suspension Control Module: Customer Interest
Electrical - Battery Drain From Incorrect SUM Connection
Retailer Technical Journal 20451
Battery drainage due to improperly
connected SUM harness.
Date 02-25-2009
Reference: Wiring diagrams
Note!
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.
AFFECTED VEHICLES:
DESCRIPTION:
Battery drainage can occur on vehicles equipped with Active Suspension and subwoofer prep if the connectors for the SUM (SUspension Module) and
the prewired SUB (SUBwoofer) are swapped. The SUM will remain active and the current draw will be approximately 80 - 400 mA. The vehicle will not
go into sleep mode as there will be activity on HS CAN (High Speed
CAN network).
The connectors for SUM and SUB are in close proximity to one another and are interchangeable.
SERVICE:
^
The connector for SUM has a green-white cable for 12 volt power and a green-black cable for a ground connection. The SUM is powered via a relay
(RB1, 2/88), and there shall be no power on this cable when the key is out.
