Troubleshooting Hints - Blower Controls

TRY THE FOLLOWING CHECKS BEFORE DOING THE SYSTEM CHECK
1. Check HTR-A/C Fuse by visual inspection.
2. Check Fusible Link B by visual inspection.
3. Check that ground G100 is clean and tight.
4. Check that the Blower Motor connectors and Blower Motor Relay are mated correctly and firmly seated.
5. If blower runs all of the time with Ignition Switch OFF, replace the Blower Motor Relay.
6. If blower runs all of the time with the Ignition Switch in RUN and the Mode Selector OFF replace the Mode Selector.
7. Replace the Mode Selector if the Blower Motor runs with the Ignition Switch in RUN and the Mode Selector in one but not all of the following modes: MAX, VENT, BI-LEV, HTR, BLEND and DEF.
^ Go to HVAC System Check on for a guide to normal operation. Testing and Inspection
^ Go to System Diagnosis for diagnostic tests. System Diagnosis - Blower Controls
^ Refer to Heater-A/C and Windows and Glass for Rear Defogger Control Assembly access information.