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DIAGNOSIS
Diagnosis > Control unit communications <
Control unit communication enables data exchange with the system to be tested by using a diagnostic device.
Communication is required for the following functions:
•
Reading out/clearing fault memory
•
Displaying parameters
•
Carrying out actuator test
•
Installing basic settings
•
Carrying out coding of control units
•
Carrying out service reset
CAUTION
Faultless communication is possible only when:
· all the pins are correctly assigned at the diagnostic socket
· the vehicle has been correctly identified
· Identify the vehicle as precisely as possible by reference to the search mask
· the voltage of the vehicle's electrical system is not lower than 11.5 V; if necessary, use external power supply
· all power consumers are off
· the diagnostic plug is connected to the vehicle
· external accessories, radio, CD changer etc. are correctly connected
· the ignition is turned on
NOTE
Always turn off the ignition before connecting or disconnecting the diagnostic plug to/from the vehicle!
If you wish to read out several fault memories one after the other one vehicle, turn off ignition after every readout
procedure and turn on again for the next procedure.
Procedure:
1.Switch on mega macs 50 with
mega macs 50
Diagnosis
Multimeter
Diagn. folder
Settings
ON/OFF
2
mega macs 50 Section E 1/5
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