Test Description

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

12. The measured voltage should be near the specified values for each mode position.

14. The HVAC control module is supplied by two ignition 3 voltage circuits. Test the ignition 3 voltage circuit that does not supply the blower motor switch.

Fig 1: Diagnostic System Check - Air Delivery Improper (1 Of 3)

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Fig 2: Diagnostic System Check - Air Delivery Improper (2 Of 3)

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Fig 3: Diagnostic System Check - Air Delivery Improper (3 Of 3)

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