Computers/Battery - Software Download Problems
TIE Technical JournalTitle All New S60 Incorrect power supply connection causing SWDL problems
Ref. No US23623.1.1 en-US
Issuer -
Partner 3 US 7510 Volvo Cars North America
Func Group 3728
Func Desc software
Status Released
Status Date 2010-09-27
Issue Date 2210-09-21
Reference
Attachment
Vehicle Type
CSC
DTC
Text
CSC= Customer symptom code
If using a printed copy of this document, always check for the latest online version.
DESCRIPTION:
There have been reports of Software Download problems when the external power source has not been correctly connected on cars equipped with a BMS (Battery Monitoring Sensor). In the US market BMS is used on all P3X vehicles with 6 cylinder engines starting structure week 201020 (MY 2011)
- If the external power source has been connected directly to the Positive and Negative connectors on the battery it will effectively bypass the BMS.
The following issues can occur when the power supply is connected directly to the B+ and B- terminals of the battery.
1 - Sparks might occur which may ignite oxyhydrogen gas from the battery.
2 - Vehicles with a "battery monitoring sensor".
This sensor may send a faulty signal to the vehicle when an external power source has been connected directly on the Positive and Negative connectors on the battery causing the vehicle to go into "Power save mode". "Power Save mode" will cause certain nodes to shut down to conserve battery power.
KNOWN SYMPTOMS:
Example for All New S60 MY 2011 after an Upgrade of IAM (Integrated Audio Module):
Message in the DIM (Driver Information Module) "Low battery Power save mode"
The ICM (Infotainment Control Module) screen shuts down since the ICM is given information that the power from the battery is too low.
SERVICE:
When an external power source is connected to a vehicle for a SWDL always connect the negative cable from the power source to the chassis of the vehicle and not directly to the battery. The positive connection should always be made before the negative connection to keep the sparks away from the battery case area.
VIDA 2011A is currently planned to be updated with this information when downloading software to a vehicle.