Condition for fault identification

Test condition:

The fault is recognized when the actual engine speed falls below the specified engine speed during the catalyst heating phase. The level of the relevant low-end violation is defined by the program map.

Potential problem source(s):

• Collateral fault

Terminal condition: none

Voltage condition:

• Electrical system voltage > 10 V

Temperature condition:

• Coolant temperature > -10 °C

Time condition:

• 10 sec. to 25 sec.

Other conditions:

• Engine on