Saab 9000 - Page 152

Fault diagnosis 149
Diagnostic trouble codes P0301, P0302, P0303, P0304 (contd.)
1
--
-·
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[ I I]
ODDO
ODDO
DODO
DODD
ooc:1
Diagnostic procedure
1 Check the operation of the ignition coil con-
cerned
- Connect an ISAT scan tool.
,_,/
-
Ignition switch in ON position.
- Select "ACTIVATE".
- Select
"IGNITION
COILS"
- Select
"IGNITION
CYL 1", "CYL 2", "CYL 3" or
"CYL 4".
-
Select the cylinder concerned.
Activation of an ignition coil takes place for 1
O se-
conds at 200 Hz. If a longer. activation time is re-
quired, the command must be repeated.
- Listen for the sound of each ignition coil
operating.
Is the Ignition coil in question operating?
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YES
I
Proceed to point 4.
I
NO
I Continue with point 2.
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Saab9000
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