Sorry we couldn't be helpful. Help us improve this article with your feedback. Related Articles. What are IABs? They effectively change the runner length of the intake manifold by opening a different set of runners when it is appropriate to do so from a long to a short runner to optimize flow through the intake manifold and speed up the air going into the motor. This ground completes the circuit and causes the solenoid to activate the IABs above a certain RPM and then deactivates it when it falls below that point basically.
The solenoid has a constant ground and received the 12 volts to complete the circuit. Read the OBD2 method for more info. The process is basically the same. This is the same type of connector on the VTEC solenoid. Generally it will be located underneath or on the side of the stock intake manifold. You can do this by finding a wiring diagram for your particular car and looking at wiring colors. The universal way is to use a continuity tester.
Next touch either one of the pins on the IAB plug until you get continuity. Remember this wire and leave it in the plug as is.
We need to change this to be a constant Power 12 volts. To be sure, use a Test Light and make sure this is the ground wire. The blower motor resistor is an electrical component that controls the fan speed of the blower by sending an alternating current from the fan speed control switch on your dashboard to the blower motor fan located in the HVAC housing.
The HVAC housing of most modern vehicles is located inside the vehicle behind the passenger side of the dashboard. This repair was performed on a Toyota Tacoma, but the exact location of your blower motor resistor could vary. There is still a chance that the blower motor control could be faulty, but if the control knob feels good and all the fuses and relays are good, chances are you need to replace the blower motor resistor.
Upon removal of the blower motor resistor, a quick visual inspection can sometimes verify that the part is faulty as it will have a dark spot resembling a burn on the resistor. The blower motor resistor is usually extremely easy to access, but the hard part can be positioning your body inside the car to remove the part. The resistor is at the bottom of the HVAC housing or just behind the glove compartment. Depending on the location of the blower motor resistor, it is sometimes easier to remove the harness first.
Once the screws have been removed and the wiring harness has been disconnected, the blower motor resistor just slides right out of the HVAC housing. If the new resistor comes with a rubber or foam gasket material around the outside edge, then be sure to remove the old gasket as well.
Before completing the full installation of a new blower motor resistor, you can check the proper operation by loosely fitting the new resistor in place and checking to verify that all blower motor fan speeds operate as designed.
If it was necessary to remove the glove box to access the blower motor resistor, the final step in this DIY repair will be reinstalling this door. Lifelong automotive enthusiast with a soft spot for offroading. Wrencher turned writer, but I still love to tinker on just about anything with an engine.
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