Saab 9000 - Page 79

76
Technical Description
Fault criteria, fuel system
If closed loop or adaptation reach an end position,
the fuel system will be considered to have developed
a fault.
Fault criteria for closed loop are satisfied when the
conditions for diagnosis are fulfilled and the closed
loop has been in the end position for more than 20 se-
conds.
·
Conditions
for closed loop diagnosis
• Engine running
• Coolant temperature above 60°C (140°F)
• Closed loop active
+25%
-25%
Fault criteria for adaptation are satisfied when the
condition for diagnosis is fulfilled and global adapta-
tion is in the end position.
Condition for adaptation diagnosis:
Ignition switch in ON position.
Saab 9000
>20
sec