1 Pressure test
While pressure test with a stopped engine the DEF pump is regulated at 9 bar. The test is
used to check the pump components to their function. The test involves no automatic
evaluation and must be actively terminated. It is to verify that the system controls on 9 bar
and this pressure is retain.
2 Injection Test
At the start of injection testing first the DEF pressure is built up. Then a definite amount
DEF is injected. The test is used to check both, the pump module and the function of the
dosing module.
The dosing module must be removed for this test.
3 The service “empty lines” must be accomplished after a service routine is completed, that the DEF lines can be emptied after ignition change.
(This is not necessary for the EOL-test or the service regeneration)
SCR-Heater relay activate
Setting of the individual heating relay to check the customer’s wiring.
– DEF Heater Main-relay
– DEF Heater Suction line
– DEF Heater Pressure line
– DEF Heater Back flow
– electrical heater – Supply Modul
– tank heater relays (coolant water)
After changing the SCR Catalyst the service “SCR Cat changed” must be set.
inducement counter reset
The exhaust legislature requires that emission-related defects, provided they bear a
permanently,enable a power reduction.
Current derating must be reset after repairing/troubleshooting by the service tool.
The button appears only in Serdia2010 when the power reduction is active.
After the counter has been reset, the button disappears.
