Quiescent current consumption greater than 1000 mA - AF54.10-P-6400-04T

Possible cause of fault 1: 

Engine 628, 646, 647, 648 only:

A quiescent current greater than 2 A is produced by an internal short circuit in the heater booster control module N33/2.

Measures: 

Replace heater booster control module N33/2.

Possible cause of fault 2: 

If the quiescent current is greater than 1 A or if it varies in cycles, an error is present in the CAN bus system.

Measures: 

Check all CAN bus systems.

Possible cause of fault 3: 

A control module causes an increased quiescent current consumption due to a defect.

Measures: 

Find defective components.

By separating components at CAN distributors.