Ground Wire Check
Turn ignition off. Test for continuity between A/C-heater control panel connector terminal A10-7 (White/Black wire) and ground. See Figure. If continuity exists (less than one ohm), inspect heater fuse. See HTR FUSE CHECK . If continuity does not exist (more than one ohm), repair wiring or connectors between A/C-heater control panel connector terminal A10-7 and body ground. See WIRING DIAGRAMS .