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9. | Working with the mega macs S 20
Proceed as follows to perform the global check:
1. Plug in the OBD plug in the vehicle's diagnostic connector.
2. Select Diagnostics > Trouble codes in the App launcher.
3. Go to Global check and click to >Start request<.
ð Communication to vehicle is being established.
ð The device requests all possible ECU versions. This may take a few minutes.
ð The device indicates all ECUs installed in the vehicle.
ð The number of trouble codes in the prevailing ECU memory is indicated.
4. Activate/deactivate the requested ECUs.
5. Call up the requested trouble code under Faults in the respective ECU memory.
ð The device indicates all trouble codes and repair tips.
9.4.2.4. Global Check – Clearing All Trouble Codes
Here you can clear all the trouble codes stored in the ECUs.
Proceed as follows to delete the fault codes upon global check:
1. Perform steps 1 and 2 as described in section Global Check, Reading Trouble Codes [} 121].
NOTICE
Clearing all trouble codes in all vehicle systems is possible only if all systems can be read out with the same
OBD plug.
2. Click to >Clear all trouble codes<.
ð The window Prepare vehicle appears.
3. Click >Next<.
4. Observe the information window.
5. Confirm the info window with >Continue<.
ð All saved trouble codes have been deleted.
9.4.3. OBD diagnostics
Here you can switch directly to the OBD2 diagnostics by just selecting the vehicle manufacturer and the fuel type.
9.4.3.1. Systems
Indication of the individual OBD 2 systems for petrol and Diesel vehicles as well as the pre-test of the German exhaust-
emission check.
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Hella Gutmann
mega macs S 20
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