Symptom Related Diagnostic Procedures

Fan Control Lever (Fan Switch) Diagnosis
Current flows to the blower motor through the heater and the A/C relay (B-36) to activate the rotation of the blower motor by turning ON the fan control knob (fan switch). Blower motor speed is controlled in stages by the resistor, by operating the switch from LOW to HIGH.




Chart A: Blower Motor Does Not Run




Chart B: Blower Motor Does Not Run At Low Position




Chart C: Blower Motor Does Not Run At Medium Low Position




Chart D: Blower Motor Does Not Run At Medium High Position




Chart E: Blower Motor Does Not Run At High Position




Chart F: Blower Motor Does Not Stop In The OFF Position