Saab 9000 - Page 88

Measure
-Oxygen sensor 1 voltage
-Oxygen sensor
2
voltage
During one oxygen sensor
1
period with duty cycle
30-80%(+), oxygen sensor
2
voltage fluctuations are
registered.
Correct voltage fluctua-
tions on basis of load and
rpm.
Add voltage fluctuations
in a memory.
Voltage fluctuations from
50 periods added togeth-
er.
Total below threshold.
Function monitored this
trip.
No
Yes
•
No
Yes
Technical Description
E
Fault criteria for catalyst
fulfilled.
[JI____.
Saab 9000
85
I