saab Workshop Repair Guides

Saab Workshop Service and Repair Manuals

Fault Diagnosis Strategy For Electronic Systems|Page 8576 > < Fault Diagnosis Strategy For Electronic Systems|Page 8574
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The test lamp should light up.

Tests OK?
YES

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Proceed to step 3.

NO

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Repair the lead in question.

-

Proceed to step 4.

3. Checking ground lead
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Connect test lamp 86 11 857 between the pins 1 and 2 in the female connector.

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Turn the ignition key to the ON position.

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Activate the valve by turning both temperature controls to maximum cold.

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The test lamp should be off and light up when the valve is activated.

Tests OK?
YES

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Replace Solenoid, heat exchanger.

-

Proceed to step 4.

NO

-

Repair the lead in question.

-

Proceed to step 4.

4. Final check
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Erase the diagnostic trouble codes from all systems.

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Check function.

Tests OK?
YES

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Actions taken to rectify problem were correct.

NO

Fault Diagnosis Strategy For Electronic Systems|Page 8576 > < Fault Diagnosis Strategy For Electronic Systems|Page 8574