General information Basic Service Symbols There are five primary symbols used to complement illustrations. These symbols indicate the part to apply such materials during service.
Description and operation Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core. The PTC heater is an electric heater using a PTC element as an auxiliary heating device that supplements deficiency of interior heat source in highly effective diesel engine.
Description and operation Description The intake actuator is located at the blower unit. It regulates the intake door by signal from control unit. Pressing the intake selection switch will shift between recirculation and fresh air modes.