PTC heater does not work
Diagnostic procedure
  1. PTC heater circuit troubleshooting
Also check for
  • HVAC DTCs
  • Blown fuse No. 26, 27, 28 (40 A) in the under-hood fuse/relay box, and No. 36 (10 A) in the under-dash fuse/relay box
  • Poor ground at G401
  • Cleanliness and tightness of all terminals
  • Powertrain DTCs