Saab 9000 - Page 211

208 Fault diagnosis
Diagnostic trouble code P1549 (contd.)
7 Check the lead connected to pin 3 of the valve
- Ignition switch in ON position.
- Plug in the valve's connector. A weak buzzing
sound should be heard.
Can a sound be heard?
I
YES
1
·
Continue with point 8.
INO ·I
Check the lead between pin 3 of the valve's
connector and pin 2 of the control module.
Repair or replace the lead if necessary.
Continue with. point 9.
8
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8 Check the lead connected to pin 1 of the valve
- Ignition switch in ON position.
- Plug in the valve's connector.
- Select "ACTIVATE".
- Select "BOOST PRESS. VALVE".
A
loud
buzzing
sound should be heard.
Can a sound be heard?
I YES
I
Change the boost pressure control valve
and continue with point 9.
I
NO I
Check the lead between pin 1 of the valve's
connector and pin 26 of the control module.
Repair or replace the lead if necessary.
Continue with point 9.
Saab9000