Question about 2002 Oldsmobile Bravada

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ECAS compressor not operating

Went out to get in vehicle. When I started it, compressor doesn't start up to level the ride. Are there any relays that could be burned out. I checked the fuses. If it is most likely the compressor. How do you replace it?

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  • Oldsmobile Master
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The compressor is under the truck, check the connector for water or corrision damage.

Posted on Aug 25, 2008

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jgwhomeequip
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SOURCE: ECAS compressor not operating

RElay is most likely your first cause. The second cause is most likely a air leak in your sstem not letting it fill with air completely

Posted on Jun 01, 2009

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How do i get the on bored compressor to work on my 2003 Hummer H2


There is a lot involved in is air ride suspension system ! A 60a Fuse in the under hood fuse block Marked VSES / ECAS .This is the power for the compressor . There is a air suspension control module , Ride height switch , Fuse in the I / P fuse block 4 WD 15a supply's B+ to ride height switch . There is a electronically controlled air suspension relay that the control module energizes to send power to turn on the compressor.

This system can an will store DTC"S in the control module !
Diagnostic Starting Point - Air Suspension
Begin the system diagnosis with the Diagnostic System Check - Air Suspension . The Diagnostic System Check will provide the following information:
?€¢
The identification of the control module(s) which command the system.


?€¢
The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
If you don't know about this stuff , I strongly suggest you take it to a repair shop ! Do you know about electrical circuits , relay's fuse's ? Do you know how to use a volt meter, read a wiring diagram. The first thing to do would be hook up a scan tool ,not a code reader. This system can set several DTC'S -diagnostic trouble codes.
DTC B2795 DTC C0563 DTC C0569 DTC C0626 DTC C0631 DTC C0660 DTC C0696 DTC C0702 DTC C0707 DTC C0711 DTC C0712 DTC C0713 DTC C0716 DTC C0717
You need to be able to test for B+ at different points in the wiring !

Mar 15, 2015 | 2003 Hummer H2

1 Answer

2003 Yukon Denali has Service ride Control Warning..wat to do?


Hi Jose:
The first place to start is to have Ride Control Module scanned for trouble codes, this requires a high end scan tool. Most common problem is the air compressor in the rear or a height sensor. Here is how the system works.

Automatic Level Control Description and Operation
The RTD system is bi-state real time damping system. The Suspension Control module controls the suspension damper solenoids and suspension position sensors, along with parts of the automatic level control (ALC) system and electronic variable orifice (EVO) power steering system.

The Automatic Level Control system consists of the following:
• Suspension Control Module
• Compressor/Leveling Module
- Air Pressure Sensor
- Exhaust Solenoid
• Compressor Motor Relay

The objective of the Automatic Level Control System is to provide constant ride height at all load conditions. The Suspension Control module monitors body-to-wheel height, and vehicle speed.

The Suspension Control module will use the rear body-to-wheel displacements and vehicle speed inputs to keep the rear trim height of the vehicle at its desired level.

The electronic suspension control (ESC) system is bi-state real time damping system. The ESC module controls the suspension damper solenoids and suspension position sensors, along with parts of the automatic level control (ALC) system, if 1500 series.

The ESC system consists of the following:
• The ESC module
• The compressor/leveling module, if 1500 series
- The air pressure sensor, if 1500 series
- The exhaust solenoid, if 1500 series
• The compressor motor relay, if 1500 series
• The steering handwheel speed/position sensor
• The suspension damper solenoids
• The suspension position sensors

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Nov 16, 2011 | 2003 GMC Yukon Denali

1 Answer

I no longer hear my ride control air compressor do it's self test when I start the car. It also doesn't seem to level the car when trunk is loaded. I changed the ECR relay under the rar seat, but...


If you change the position of the height sensor on the front of rear, the aircompressor should kick on.

I have a 1996 Lincoln Mark VIII that has a fuse in the trunk labeled RSS (beside the on off switch) and if that blows the entire air ride system stops working. But I can't remember whether the self test was gone through or not.

Unfortunately, since the car is not doing a self test when you start the car or getting an error message it sounds more like the computer for your DeVille.

Jun 21, 2011 | 1994 Cadillac DeVille

2 Answers

Lift sensor for rear of 1988 Deville


To begin with, check the "ride level" fuse and make sure that the ride level compressor does work, and you should be able to hear that the ride level compressor is working when the ride level system is leveling the vehicle.

The ride level system uses an air compressor and either an air type of shocks or a type of air billow to raise and lower the vehicle, there is an adjustment to set the ride height and it is located under the vehicle and there is a control lever or rod that should be connected between the rear axle and a switch that is mounted on the body of the vehicle, and there will be an adjustment slot in the control lever between the switch and the body, and that is how you would adjust the ride level height, but be sure that the vehicle can not drop any further down if someone is under the vehicle trying to adjust the ride height.

However, you might find that the control lever to the ride level has fallen off from the switch on the body or it has come loose from the rear axle, and it is just hanging there not operating the switch on the body that controls the the ride level compressor, or there might be a blown out air shock or billow, or you might find that an air line from the compressor is leaking and the ride level compressor will just run continuously until it blows out the fuse, and if that is the case you might also find out that the air compressor has burned out from running continuously.

I hope that this information will help you to solve your ride level problem.

Jun 04, 2010 | 1988 Cadillac Sedan DeVille

1 Answer

Electronic level control not working right in a 1999 cadillace deville, what can i do to fix it?


To begin with, check the "ride level" fuse and make sure that the ride level compressor does work, and you should be able to hear that the ride level compressor is working when the ride level system is leveling the vehicle.

The ride level system uses an air compressor and either an air type of shocks or a type of air billow to raise and lower the vehicle, there is an adjustment to set the ride height and it is located under the vehicle and there is a control lever or rod that should be connected between the rear axle and a switch that is mounted on the body of the vehicle, and there will be an adjustment slot in the control lever between the switch and the body, and that is how you would adjust the ride level height, but be sure that the vehicle can not drop any further down if someone is under the vehicle trying to adjust the ride height.

However, you might find that the control lever to the ride level has fallen off from the switch on the body or it has come loose from the rear axle, and it is just hanging there not operating the switch on the body that controls the the ride level compressor, or there might be a blown out air shock or billow, or you might find that an air line from the compressor is leaking and the ride level compressor will just run continuously until it blows out the fuse, and if that is the case you might also find out that the air compressor has burned out from running continuously.

May 23, 2010 | 1998 Cadillac DeVille

1 Answer

My air ride compressor is no longer working. how


look for fuse under back seat that says ecas.my compressor also quit but i keep blowing the fuse when i change it .so i have other prob .good luck

Jul 13, 2009 | 2002 Oldsmobile Bravada

3 Answers

Air ride is not working


were is the fuse located for the air ride

Jun 09, 2009 | 1999 Cadillac DeVille

1 Answer

ECAS compressor not operating


RElay is most likely your first cause. The second cause is most likely a air leak in your sstem not letting it fill with air completely

Jun 01, 2009 | 2002 Oldsmobile Bravada

1 Answer

Loud buzzing noise


From the sounds of it, it's simply your air ride's compressor. If you're not aware that your vehicle has air ride suspension, read up on the user's manual or look on the web. When you start your vehicle and shift into drive or reverse, your compressor should start (assuming no doors are ajar). The compressor than fills all four airbags in your vehicle to a factory-set height. These airbags provide a softer ride than the conventional shock/strut system seen in less expensive SUV's and trucks but are also more prone to problems and damage down the line. You can isolate the compressor as the sound by going to your truck, removing the left hand side panel and switching your air ride off. Your car's compressor then should not kick in at all. However, you should not operate your vehicle with this switch turned off. You should only use it as a diagnostic reference or anytime your car is towed, hoisted, or jacked up. Hope this helps.

Jan 16, 2009 | 2003 Lincoln Navigator

2 Answers

02 bravada auto leveling


I would check the relay that operates the system. It is under the hood in the Maxi fuse box I think.

Aug 26, 2008 | 2002 Oldsmobile Bravada

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