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CONTROL-A/C HEATER DESCRIPTION The A/C-heater control for the manual temperature The heating-A/C system uses a combination of, elec- The A/C-heater control is located in the instrument • a push button A/C on/off control (1). The snow- • a push button rear window defogger on/off con- • a rotary control for temperature control of the dis- • a rotary control for turning the heating-A/C system on and off and for recirculation and mode control of the • a rotary control for fan speed selection (5). The A/C-heater control cannot be repaired and, if faulty or damaged, it must be replaced. The control knobs and DIAGNOSIS AND TESTING VACUUM CONTROL SYSTEM Use an adjustable Vacuum Test Set (Special Tool Place a finger over the end of the Vacuum Test Probe VACUUM CHECK VALVE 1. Remove the vacuum check valve. The valve is located in the vacuum supply line (black) at the HVAC system vacuum tee. 2. Connect the Vacuum Test Probe from the Vacuum Test Set to the heater side of the vacuum check valve. When connected to this side of the check valve, no vacuum should pass and the Vacuum Test Gauge should return to 24 - 30 CONTROLS KJ |