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Test A: Air Delivery Improper

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Definition: Air does not flow correctly from the air distribution outlets.
  1. Perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. If diagnostic system check has been performed, go to next step.
  2. Start engine. Place mode switch in OFF position. If blower motor is off, go to next step. If blower motor is not off, go to TEST B: BLOWER MOTOR ALWAYS ON .
  3. Place mode switch in VENT position. Place blower motor switch in each speed position. If blower motor operates in any speed position, go to next step. If blower motor does not operate in any speed position, go to TEST C: BLOWER MOTOR INOPERATIVE .
  4. If blower motor operates correctly in each speed position, go to next step. If blower motor does not operate correctly in each speed position, go to TEST D: BLOWER MOTOR MALFUNCTION .
  5. If vehicle is equipped with air conditioning, go to next step. If vehicle is not equipped with air conditioning, go to step  7.
  6. Place blower switch in maximum speed position. Place mode switch in MAX position. If the recirculation door moves to the recirculation position, go to next step. If the recirculation door does not move to the recirculation position, go to VACUUM CONTROL SYSTEM DIAGNOSTICS  under SYSTEM TESTS.
  7. Place mode switch in each mode position. If air flows from the proper air distribution outlets in each mode position, problem is intermittent. Check wiring harness and connectors for damage or defects and poor connections. If air does not flow from the proper air distribution outlets in each mode position, go to VACUUM CONTROL SYSTEM DIAGNOSTICS .
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