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4. CHECK FOR 12 VOLTS TO THE BLOWER MOTOR Turn the ignition off. Disconnect the Blower Motor harness connector. Turn the ignition on. Turn the Blower Motor control on. Using a volt meter measure the voltage on the (C7) Blower Motor Con- Does the volt meter read 12 volts? Yes >> Go To 5 No >> Go To 6 5. CHECK FOR A BLOCKAGE STALLING THE BLOWER MOTOR Turn the ignition off. Remove the Blower Motor from the HVAC housing assembly. Look for anything on the Blower Motor and in the HVAC housing that is physically preventing Blower Motor oper- Is anything physically preventing Blower Motor operation? Yes >> Repair as necessary. Also, check Blower Motor for proper operation. Reinstall, or replace the Blower Motor as necessary in accordance with the service information. No >> Replace the Blower Motor in accordance with the service information. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL 6. CHECK FOR CHAFING IN THE (C7) BLOWER MOTOR CONTROL CIRCUIT Turn the ignition off. Check the (C7) Blower Motor Control circuit for wire chaffing. Is any wire chaffing present? Yes >> Repair the wire chafing on the (C7) Blower Motor Control circuit. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL No >> Replace the Totally Integrated Power Module (TIPM) in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL PM HEATING & AIR CONDITIONING ELECTRICAL DIAGNOSTICS 24 - 45 |