saab Workshop Repair Guides

Saab Workshop Service and Repair Manuals

Fault Diagnosis Strategy For Electronic Systems|Page 7769 > < Fault Diagnosis Strategy For Electronic Systems|Page 7767
Page 12
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Check that the coolant does not contain impurities.

Diagnostic procedure

1. Checking vacuum hoses
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Check vacuum hoses between shut-off valve and inlet pipe.

Are the hoses free from defects?
YES

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Proceed to step 2.

NO

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Rectify vacuum hoses.

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Proceed to step 4.

2. Checking power supply.
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Turn the ignition key to the ON position.

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Unplug the connector: Solenoid, heater box: (581).

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Connect a test lamp 86 11 857 between pin 1 in the female connector and a good grounding point.

Fault Diagnosis Strategy For Electronic Systems|Page 7769 > < Fault Diagnosis Strategy For Electronic Systems|Page 7767