Isuzu 1999 RODEO Workshop Manual page 36

1A–8 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Fan Control Lever (Fan Switch) Diagnosis
Current flows to the blower motor through the heater relay
(X-6) 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".
For the inspection of the relays, switches and units in
each table, refer to "INDIVIDUAL INSPECTION" in this
section.
Condition
Blower motor does not run.
Blower motor does not run in certain
position (s).
Blower motor does not stop at "OFF"
position.
Possible cause
—
—
—
Correction
Refer to Chart A
Refer to Chart B, C, D and E
Refer to Chart F
D08RW059