I am assuming you checked the fuses for the ac /heater first as you mnever said anything about that.. the resistor block and switch removal can be printed out either by the parts store or dealer service..
SOURCE: 4L30E transmission control Module 1999 Isuzu Rodeo 2wd
should be on the driver's side under the dash
SOURCE: Blower Motor Resistor for front AC/Heater
remove glove box....its in the casing near motor.....2 screws and 1 connector
SOURCE: I own a 99' Isuzu rodeo, fixed blower fan and doesn't work.
just replace the resistor, the thermal limiter is blown.
SOURCE: 1997 isuzu rodeo problems with the blower motor
You can test the blower motor by connecting a positive and negetive wire directly to the 2 terminals on the motor.
As far as the resistor goes. If the blower motor only works on high fan speed then the resistor is bad. If it works on all speeds except high, then the relay is bad. Good luck. Hope this helps.
SOURCE: Blower motor on 96 Isuzu Rodeo does not blow on
if fuses are good, check for power at blower motor, when truck is running and a/c on. the resistor and the switch provide ground, so the blue/white wire should have power, and the blue/black wire should have NO power, if it does have power, then most likely the resistor is bad. if it has no power and the motor doesnt run, the motor is bad.
Testimonial: "I will give that a try.. and post the results.."
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I checked the fuses although I haven't checked the relay. I already know how to remove the resistor just not the part with the switch that controls the fan. Does anyone know how to tell if the resistor is bad?
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