Saab 9000 - Page 146

Fault diagnosis
143
Diagnostic trouble code P0300 (contd.)
3
3 Check the condition of the ignition discharge
module
- Remove the ignition discharge module from the
camshaft cover.
- Check visually:
• that the four rubber seals for the spark plugs
are in good condition.
• that no contact spring for the spark plugs is
missing or that spring travel is inadequate.
• the connector for moisture and corrosion.
Is the ignition discharge module OK?
· 1
YES
I
Continue with point 4.
I
NO
I
Rectify the fault and proceed to point 4.
4
•
4 Check the spark plugs
- Remove the spark plugs and check their condi-
tion visually.
Are the plugs OK?
I
YES
I
Continue with point 5.
I
NO
I
The electrode gap is wider than 1.4 mm or
is otherwise obviously incorrect.
Change the spark plugs and proceed to po-
int 8.
Saab 9000
I