Fault Information

Fault Code Description

Fault Code Conditions

Fault Time Condition
DME: Bit-serial data interface, signal

Service Plan
CAN Timeout BSD (Bit Serial Data Interface)

Fault Impact
Terminal 87 >10.0 V Terminal 15 ON BSD bus monitor

Warnings

Service Notes
1. Disconnect all BSD_components (alternator, battery sensor, water pump) except for the oil sensor. Clear fault memory. Ignition off/on. If fault code is stored again: QLT is defective and must be replaced. Repeat test. 2. If fault code is entered again after QLT replacement: -> Check wiring harness (BSD_BUS) and all plug-in connections for corrosion and shorts to ground/UBatt. 3. If fault code no longer appears after QLT replacement: -> QLT was defective. 4. If no fault code is stored after all components (except QLT, as in 1.) are disconnected: -> The fault lies with one of the other BSD_components. Now connect the water pump and clear all fault memories, ignition off/on. 5. If no fault code is entered now, with the water pumpand QLT connected -> Connect alternator. 6. If no fault code is stored with water pump, QLT and alternator connected -> Connect battery sensor. 7. If the system now operates with all BSD components, and no fault has been detected, recheck the plug connections in the wiring harness and at the components for good contact / corrosion.

Service Notes

1. Disconnect all BSD_components (alternator, battery sensor, water pump) except for the oil sensor. Clear fault memory. Ignition off/on. If fault code is stored again: QLT is defective and must be replaced. Repeat test.
2. If fault code is entered again after QLT replacement: -> Check wiring harness (BSD_BUS) and all plug-in connections for corrosion and shorts to ground/UBatt.
3. If fault code no longer appears after QLT replacement: -> QLT was defective.
4. If no fault code is stored after all components (except QLT, as in 1.) are disconnected: -> The fault lies with one of the other BSD_components. Now connect the water pump and clear all fault memories, ignition off/on.
5. If no fault code is entered now, with the water pumpand QLT connected -> Connect alternator.
6. If no fault code is stored with water pump, QLT and alternator connected -> Connect battery sensor.
7. If the system now operates with all BSD components, and no fault has been detected, recheck the plug connections in the wiring harness and at the components for good contact / corrosion.