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Models With Sunroof

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  1. Perform SYSTEM OPERATION CHECK  under TROUBLE SHOOTING. Go to next step.
    2. NOTE: This step will determine if one or more blower speeds are inoperative.
  2. Turn ignition on. Place the auxiliary blower motor switch in each speed position. Does the auxiliary blower motor operate in each speed position? If so, check for intermittent and poor connections. If not, go to next step.
    3. NOTE: This step tests for a voltage change in the auxiliary blower motor feed circuit.
  3. Turn ignition off. Disconnect the auxiliary blower motor connector. Turn ignition on. Connect a test light between the auxiliary blower motor supply circuit and the auxiliary blower motor ground circuit. Place the auxiliary blower motor switch in each speed position. Does the test light illuminate and change intensity in each speed position? If so, go to step  7. If not, go to next step.
    4. NOTE: This step tests for an open in one of the blower motor speed control circuits and the auxiliary HVAC control switch ground circuits.
    NOTE: The auxiliary blower motor switch must be in the correct position for the auxiliary blower motor speed control circuit being tested. Failure to do this will result in a misdiagnosis.
  4. Turn ignition off. Disconnect the auxiliary blower motor resistor assembly connector C1. Probe each auxiliary blower motor speed control circuit with a test light that is connected to battery positive voltage. Place the auxiliary blower motor switch in each speed position for the auxiliary blower motor speed control circuit being tested. Does the test light illuminate in each position? If so, go to step  8. If not, go to next step.
  5. Check the appropriate auxiliary blower motor speed control circuit for an open. Did you find and correct the condition? If so, go to step  12. If not, go to next step.
  6. Inspect auxiliary HVAC control assembly harness connector for poor connections. Did you find and correct the condition? If so, go to step  12. If not, go to step  9.
  7. Inspect auxiliary blower motor harness connector for poor connections. Did you find and correct the condition? If so, go to step  12. If not, go to step  10.
  8. Inspect auxiliary blower motor resistor assembly harness connectors for poor connections. Did you find and correct the condition? If so, go to step  12. If not, go to step  11.
  9. Replace the auxiliary HVAC control assembly. See HVAC CONTROL ASSEMBLY (FRONT AUXILIARY) or HVAC CONTROL ASSEMBLY (REAR AUXILIARY)  under REMOVAL & INSTALLATION. After repairs are complete, go to step  12.
  10. Replace the auxiliary blower motor. See BLOWER MOTOR (AUXILIARY)  under REMOVAL & INSTALLATION. After repairs are complete, go to step  12.
  11. Replace the auxiliary blower motor resistor assembly. See BLOWER MOTOR RESISTOR  under REMOVAL & INSTALLATION. After repairs are complete, go to next step.
  12. Operate the system in order to verify the repair. Did you correct the condition? If so, system is okay. If not, go to step  2.
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