Heating Symptom Troubleshooting

Symptom	Diagnostic procedure	Also check for
Blower motor runs, but one or more speeds are inoperative	Blower Motor Circuit Troubleshooting	Cleanliness and tightness of all connectors
Blower motor does not run at all	Blower Motor Circuit Troubleshooting	Blown fuse No. 5 (40A) in the under-hood fuse/relay box, and No. 22 (7.5A) in the under-dash fuse/relay box Poor ground at G402 Cleanliness and tightness of all connectors