Condition for fault identification

Test condition:

The fault is recognized when the ignition-angle adjustment is outside the tolerance range.

Potential problem source(s):

• Poor fuel quality

Terminal condition: none

Voltage condition:

• Onboard electrical system voltage between 9 V and 16 V

Temperature condition:

• None

Time condition:

• 5 sec. after engine on

Other conditions:

• Engine on and running at idle
• Catalyst heating (always takes place for at least 45 sec. following engine start)