Conditions For The Regular Diagnosis
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
- Conditions for cold start diagnosis not fulfilled during this driving cycle or cold start diagnosis indicated a leak.
- Diagnosis commenced more than 8 times during this driving cycle.
- Approved transition diagnosis of oxygen sensor 1.
- The purge valve PWM has exceeded 40 % at some time.
- Idling speed.
- Car stationary for more than 5 s.
- Max. one change of status of the brake light switch.
- Additional fuel from purge is less than 7 % of the engine's fuel requirements.
When the conditions above have been fulfilled, the diagnosis will start by closing the shut -off valve and setting the purge valve PWM ratio to 15 %. The additional fuel from the purge is allowed to be 13 % of that required by the engine.