Troubleshooting Hints - Blower Controls

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS:
1. If the Blower Motor does not operate, check Fuse 8 by visual inspection.
2. If the Blower Motor does not operate, check that ground G101 is clean and tight.
3. If the Blower Motor runs all the time with the Ignition Switch in "OFF," replace the Blower Motor Relay.
4. If the Blower Motor runs with the Ignition Switch in "RUN" and Mode Selector in "OFF," replace the Mode Selector.
5. Replace the Mode Selector if the Blower Motor runs with the Ignition Switch in "RUN" and the Mode Selector in one but not all in the following modes: "MAX," "NORM," "B/L," "VENT," "HTR," "BLEND," and "DEF."
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check (refer to "General Troubleshooting Procedures,"). Diagnostic Aids
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (refer to "General Troubleshooting Procedures,").
^ Refer to System Diagnosis. Initial Inspection and Diagnostic Overview