If the electronic engine control unit has switched to emergency mode due to the excess of the content of unburned particles in the particulate filter.
Note. If the electronic engine control unit has switched to emergency mode due to the excess of the content of unburned particles in the particulate filter, it is necessary to check for fault codes in the memory of engine control units. If fault codes are found, system diagnostics must be performed.
In case of replacement of the electronic control unit of the engine.
Note. Based on the signals from the sensors, the electronic engine control unit determines the amount of unburned particles in the particulate filter and stores these values in a read-only memory block (EE-PROM). If the engine ECU is replaced with a new one, there will be a difference between the current particulate filter content and the value stored in the unit's memory, since the new control unit initializes the new stored value. In this case, the electronic control unit cannot restore the particulate filter automatically. In this regard, it is necessary to perform a service recovery procedure.
In the case of a component check of the particulate filter.
Attention. To prevent engine overrun, it is necessary to check the engine oil level before starting a forced service rebuild.
1. Check the engine oil level in the engine.
2. Start the engine and warm up to normal operating temperature.
3. Turn the ignition switch to the OFF position.
4. Turn the ignition switch to the ON position.
5. Select «SERVC REGENERATION» on the menu «WORK SUPPORT» instrument CONSULT-III.
6. Press «START» and wait about 30 minutes.
Note. Do not perform any operations on the vehicle during the service restoration process.
7. Wait until it is displayed «END».
Note. «END» is displayed approximately 30 minutes after the start of the procedure.
8. Switch off the ignition and wait approximately 10 seconds.
9. Check the engine oil level in the engine.