Air bag suspensions systems are a feature found on many luxury vehicles and SUVs. An air bag suspension system serves the same purpose as a standard suspension system, however, instead of using metal springs and liquid filled shocks, it uses a system of inflatable air bags filled with compressed air to suspend the vehicle off the ground.
One of the most important components of an air bag system is the compressor. The compressor is what supplies the entire system with the compressed air required to inflate the airbags and support the weight of the vehicle.
Without the compressor, the entire air bag system would be left without air, and the vehicle would be left with an inoperable suspension. Usually, when the compressor is having a problema few symptoms will be produced that can alert the driver of a potential issue that should be serviced. One of the first and most common symptoms of a problem with the air suspension compressor is a noticeably lower vehicle ride height. Air suspension systems work by using pressurized air from the compressor.
If the compressor is worn or is having a problem, it may not be able to adequately inflate the air bags and the vehicle may sit and ride noticeably lower as a result.
One of the most noticeable symptoms of a potential problem with the compressor is abnormal noises during operation. If the compressor is allowed to continuously operate with abnormal sounds, it may eventually result in damage to the compressor that will cause it to fail. When the compressor fails, the system will have no means of inflating the air bags and the vehicle will have a disabled suspension.
Another symptom and a more serious issue is a compressor that does not come on. The suspension system cannot function without it. If the compressor is failing to come on at all, then that is a sign that it has either failed or it is having an issue. The air compressor is what provides the air suspension system with compressed air required for it to function.
They can determine if the vehicle needs an air suspension compressor replacementor if any other repairs are needed. The most popular service booked by readers of this article is Suspension Inspection.
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Suspension Inspection Cost. Service Location. Vehicle riding lower than normal One of the first and most common symptoms of a problem with the air suspension compressor is a noticeably lower vehicle ride height. Abnormal noises during operation One of the most noticeable symptoms of a potential problem with the compressor is abnormal noises during operation.On top of each air bag is a electrical valve that serves as a relief valve that allows air to be exhausted when activated.
The valve senses the amount of air pressure within the air bag to keep both sides equal. These valves are operated via a leveling sensor that is attached to the body of the car and to the rear axle by a movable arm. When the rear of the car drops because of an increased load, the arm is pushed up, turning on the air compressor and filling the air bags to level the car. When the load is removed and the arm moves down, indicating that the back of the car has risen, the sensor opens the valve on the air bags and allows air to escape, lowering the car.
If the back of the car is low, indicating that the air suspension is not working, and the air suspension light is on, check the fuse.
If the fuse is all right, make sure the air-suspension switch in the trunk is on.
This switch is used when the car is in for service. Always turn off the switch before lifting the car, because the sensor will think the car is rising and keep the air bag valves open, ruining the rear air suspension. Turn the ignition key with the engine off, and listen for the compressor to come on while pushing down on the rear bumper. If it does not come on, test the switch terminals for power with a circuit tester. If one terminal has power and the other does not, replace the switch. If there is power, turn the switch to the "Off" position, raise the vehicle and place it on jack stands in the rear.
Inspect the leveling switch on the axle, making sure it is not bent and is connected. Use an ohmmeter for this test. Pull the electrical connector off the switch. Loosen the arm of the switch from the axle. Test the switch with the ohmmeter by checking across both terminals while slowly moving the arm.
There should be no continuity with the arm down. As the arm is raised, there should be continuity. If not, replace the switch. If there was continuity, connect the arm and the electrical connector. Put a floor jack under the axle and raise the axle so it is just beginning to lift the car off the jack stand. Turn on the ignition. Turn the air suspension switch to the "On" position. Use the circuit tester to check for power at the leveling switch.
If there is power, turn the air-suspension switch to "Off" and lower the car. Access the air compressor in the front, under the hood, and check the electrical connector for power.
Fuses and relay Range Rover 2002-2012
If there is power, check for a good ground. If both are good, replace the compressor.
If the compressor works and the car does not rise in the back, replace the air bags. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.
Q: Looking for the fuse slot for the auto ride compressor.
To submit your questions or ideas, or to simply learn more about It Still Works, contact us.Take a shot at trying to troubleshoot air conditioning problems in your Pontiac Bonneville before making a costly and time-consuming trip to the dealer or a mechanic.
Sometimes air conditioning problems in an automobile can be an easy fix, even for those of us who know nothing about cars.
Start the car and turn the air conditioning on. Allow the engine to run a few minutes so the air can cool. Check to make sure you have the proper buttons selected.
This simple step may uncover the root of the problem. Adjust the climate controls. If they seem to work fine but have effect on the air, then the problem is probably a simple blown fuse. If the controls do not work correctly, then the problem is probably with the control panel. If you cannot hear the sound that accompanies turning the air from low to high, then the problem is likely with the blower motor.
Change a fuse easily to fix the problem. The interior fuse box in a Pontiac Bonneville is underneath the backseat on the driver's side. Remove a blown fuse with the fuse remover found inside the fuse panel. The air conditioning relay fuse is in position number Get to the control module in a Pontiac Bonneville by first draining the coolant. Remove the evaporator hose nut, remove the evaporator hose from the evaporator, remove and discard the sealing washers from the evaporator hose, remove the heater hoses from the heater core.
Plug the heater core and evaporator openings to prevent leaking into the vehicle when removing the HVAC module.
Interior Fuse Box Location: 2000-2005 Pontiac Bonneville
Pinch off the hoses in order to prevent leaking. Remove the instrument panel assembly. Remove the defroster duct retaining screws. Remove the defroster duct nut, the defroster duct, and the air distributor duct. Next, disconnect the blower control module connector and the electrical connector. Remove the retaining nuts and finally the control module. Remove the right side sound insulator in the passenger compartment to get to the blower motor.
Disconnect the electrical connector from the blower motor and the blower ventilation tube from the module. Remove the blower motor screws and pull it out. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.
To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Step 1 Start the car and turn the air conditioning on.Compressor for the rear auto ride suspension stopped working.
Manual doesn't specify which fuse runs the compressor. The fuse for the level control compressor is located in the under the hood fuse block. It is a 40 amp fuse number There is also a relay between this fuse and the electronic suspension control module.
In addition to the 40 amp fuse that directly powers the compressor, there is also a fuse that powers the primary side of the compressor relay.
It is located in the same fuse block, it is a 10 am fuse number In addition to these two fuses there is the main power fuse for the suspension module. It is in the same fuse block, fuse number 2 and it is a 30 amp fuse.
Any of these components, compressor relay, the three fuses and the module could be the problem. This system relies on several other inputs to determine when the compressor turns on or off.
For this reason I advise you to utilize a wiring diagram and a test light. I will have customer service contact you do help you set up the appropriate service for the air ride. They will make sure a mechanic with the appropriate tools and skill set can help you out. Q: Looking for the fuse slot for the auto ride compressor.
My car has miles. My car has an automatic transmission. Robert Kulp Automotive Mechanic. Thank Robert.
How to Troubleshoot the Air Conditioning in a Pontiac Bonneville
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Related Questions. When car is shifted into drive car will not go forward when pressing gas it just rev the engine. But when shifted into reverse car by Darrell R. I am receiving an engine power reduced message on my dash board.
Car will still cut on and is driving. I have an 06 Chevy Colbolt by Tayshia R. Engine shaking by Kelvin G. Oil drain plug is rounded off on my Chevy cruze. Can I replace just the drain plug or the whole oil pan by Philip T.Fuse box in passenger compartment. The passenger compartment fuse box is fitted behind the glovebox; to access the fuses, open the glovebox, then press down on the catches 1 whilst pulling the cover rearwards.
The solid arrow in the illustration indicates the location of the fuse removal tool. The fuse box is situated on the right hand side of the loadspace behind the rear loadspace access hatch.
Skip to content. Rear loadspace fuse box. Fuse box in engine compartment Range Rover 3. Tags: Fuse box diagram Range Rover. Fuse Function. Diagnostics, Alternator, Transmission. Air Conditioning, Heated Seats — Front. Approach Lamps. Driver's Seat, Steering Column Adjust. Front Passenger's Seat. Steering Column Adjust. Windshield Wipers. Headlamp Cleaning. Heated Steering Wheel. Engine Management, Immobilization.
Xenon Headlamps. Air Conditioning, Blower, Heated Windshield. Central Locking, Electric Windows — Rear. Engine coolant blower motor.Automotive Forums. Bonneville Automatic Load-Leveling System.
Hey, I have a 96 SSE and the air pump in the load leveing system won't turn on. I have looked all over for a wiring schematic etc and have found nothing. I want to troubleshoot the system, but have nowhere to start. I was thinking of starting at the air pump, but don't know which wires to supply voltage to. Please help if anybody can. The system dosen't work, I have checked and found 2 fuses in the driver side box and a relay clicks when I press the on button for the air in the trunk, but thats all.
Thanks in advance for any help Brad. Air is pumped into the rear struts until the vehicle is level. An actuator arm is connected between the rear axle control and the ELC height sensor, which is mounted on the body.
It turns as the vehicle height changes. A solid state unit detects this motion and operates switches to control the air flow into and out of the rear struts. The compressor, after an initial delay, will run for a few seconds to charge the system when the ignition switch is turned to RUN. This prevents system operation during normal ride motions. In addition, the ELC height sensor limits compressor run time or vent solenoid energized time to a maximum of 10 minutes.
This time limit is necessary to prevent continuous compressor operation in case of a severe system leak or continuous vent.Relay test
Raising the Vehicle When a load is added to the vehicle, the vehicle body is moved downward and the actuator arm rotates upward. Switch B closes in the ELC height sensor. After a second delay, switch C closes. The coil in the ELC relay is energized and the relay contacts close. Battery voltage is applied to the compressor motor. The compressor operates and pumps air into the adjustable rear struts.
As the struts inflate, the vehicle body moves upward. When the actuator arm rotates back to its original position plus or minus 1 inchswitch B opens, the relay is no longer energized and the compressor stops.
Lowering the Vehicle When a load is removed from the vehicle, the vehicle body is moved upward and the actuator arm rotates downward. After a 17 to 27 second delay, switch C closes, the vent solenoid is energized and air is exhausted from the rear struts. As the vehicle body moves downward, the actuator arm is rotated back to its original position plus or minus 1 inchswitch A opens and the vent is no longer energized.
Inflator When air is needed to fill a tire, connecting the inflator hose and then turning the inflator switch to ON activates the inflator solenoid valve and ELC compressor. The ELC compressor pumps and air is diverted from the ELC system to the inflator system by the inflator solenoid valve.Lake Chevy helped make these videos.
We are still working to obtain content for your car, however the video above is believed to have similar characteristics as your car. The video above shows how to replace blown fuses in the interior fuse box of your Pontiac Bonneville in addition to the fuse panel diagram location. Electrical components such as your map light, radio, heated seats, high beams, power windows all have fuses and if they suddenly stop working, chances are you have a fuse that has blown out.
If your Bonneville is experiencing electrical problems, you should always check the fuses first, because they are relatively easy to check and cheap to change. Some Pontiacs have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your Bonneville is located. If your Bonneville has many options like a sunroof, navigation, heated seats, etc, the more fuses it has.
Some components may have multiple fuses, so make sure you check all of the fuses that are linked to the component in question. If you need to replace a blown fuse in your Bonneville, make sure you replace it with one that has the same amperage as the blown fuse. If checking and replacing the fuse for the component in question doesn't work, we recommend seeking assistance from a trusted professional mechanic.
They should be able to figure out if the component needs to be replaced or if there is a short or some other problem with your Bonneville. Learn where your air filter is located and how to determine if it needs to be changed. Transmissions that leak fluid usually have never been flushed and the seal is finally leaking.
The right stop leak product can cure a lot. Animals love the sweet smell of antifreeze, too bad it's toxic! Fix your minor leaks. Getting Started Prepare for the repair. Remove Cover Locate interior fuse box and remove cover. Locate Bad Fuse Find the fuse that is tied to the bad component. Remove Fuse Take out the fuse in question and assess if blown. Test Component Secure the cover and test component. More Info. Additional information on interior fuses.
Video Description. Other videos you might find helpful.