volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Current draw test > < Assessing test results
Dealing with problems with MidtronicsMCR340V battery tester
Dealing with problems with Midtronics -MCR340V- battery tester
Under certain circumstances, the display may show errors or messages according to status.
The most frequent display messages are listed below, together with suggested solutions.
  Note
For messages not listed here, please refer to → operating manual MCR340V.
   
Display messageMeasures
No display
–  Check whether terminals of battery tester are firmly connected to battery terminals.
–  Check battery terminals are tightened according to regulations and are free from corrosion.
–  Charge battery → Chapter.
System noise
–  Switch off all electrical consumers.
–  Wait until all electrical loads monitored by onboard supply control unit have switched off.
–  Remove ignition key.
–  Disconnect any suspect non-standard electrical equipment from the onboard supply.

Wait a few minutes and test again → Chapter.
  Note
If you have performed the test at jump-start point and the message does not disappear, perform the test directly on the battery.
   

Current draw test > < Assessing test results