Question about 2002 Oldsmobile Bravada

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Air suspension wont inflate cant fing fuse or relay need diagram

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The fuse and relay are both under the hood in the main fuse box.But ill tell you right now,9 chances out of 10 the leveling switch(one on left and right side in the rear of truck)has gone bad,when one goes bad the whole thing shuts down.One way to check to see if compressor is working is if you have the tire inflation hook up in the rear cargo area,turn it on.If the compressor comes on then the fuse is good and its one of the leveling switches.To test the switch you have to use an ohm meter to test to see if they are working.I just replaced both of them myself and it cost me a hundred dollars for each switch.I rigured if one went bad might as well change both cause the other one will not be far behind to go bad....

Posted on Sep 05, 2010

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Posted on Jan 02, 2017

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1 Answer

Audi A8 sits low in front both light are blinking


Your air suspension system is bad. Likely one of air springs/bags has a leak. The compressor overheated and tripped out. The system needs to be reset.

I also had the system malfunction (compressor not running anymore to inflate the air bags to proper level) and found that water had entered the fuse/relay chamber under the hood; relays contact corroded and did not work anymore.

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Rear air suspension will deflate but won't inflate. All fuses are good and the compressor relay has been replaced. Jumping out wires at the compressor relay will inflate and maintain height with the rear...


If it is easy to remove the sensor and the plugs are the same. I would try that. That will tell you if the sensor is bad(the rear will inflate). Or if it is the module. (It won't inflate).

Nov 06, 2015 | 2002 Lincoln Navigator

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Rear suspension will deflate but why won't it inflate?


That could work , You mite be able to test the sensor in question with ohm meter . Test the front one an see what the resistance is ,then check the back one. I don't know what it should be with out looking it up in the service info . You could also check to see if the sensor is getting power from the control module , an see if there is a return input to the module .
There are a few DTC'S this able to set !
Air Suspension Control Module Diagnostic Trouble Code (DTC) Index
Air Suspension Control Module Diagnostic Trouble Code (DTC) Index DTCs Description Source Action B1318 Battery Voltage Low Air Suspension Control Module Go To Pinpoint Test C . B1342 Air Suspension Control Module Air Suspension Control Module INSTALL a new air suspension control module. REFER to Module-Air Suspension Control . SET the front ride height. REFER to Air Suspension Initialization (Clear DTC B2140). CLEAR the DTCs. REPEAT the self-test. B1485 Brake Pedal Input Circuit Battery Short Air Suspension Control Module RERUN On-Demand Self-Test. MAKE SURE that the brake pedal is not pressed. If DTC is returned again, REPAIR brake pedal position (BPP) circuitry. B1566 Door Ajar Circuit Short to Ground Air Suspension Control Module Go To Pinpoint Test D . B2140 Initialization Failure (Vehicle Ride Height Not Programmed) Air Suspension Control Module REFER to Air Suspension Initialization (Clear DTC B2140). C1439 Vehicle Acceleration EEC-V Circuit Failure Air Suspension Control Module Go To Pinpoint Test E . C1724 Air Suspension Height Sensor Power Circuit Failure Air Suspension Control Module Go To Pinpoint Test F . C1726 Air Suspension Pneumatic Failure Air Suspension Control Module Go To Pinpoint Test G . C1760 Air Suspension Height Sensor High Signal Circuit Failure Air Suspension Control Module Go To Pinpoint Test H . C1770 Air Suspension Vent Solenoid Output Circuit Failure Air Suspension Control Module Go To Pinpoint Test I . C1790 Air Suspension LR Air Spring Solenoid Output Circuit Failure Air Suspension Control Module Go To Pinpoint Test J . C1795 Air Suspension RR Air Spring Solenoid Output Circuit Failure Air Suspension Control Module Go To Pinpoint Test K . C1830 Air Suspension Compressor Relay Circuit Failure Air Suspension Control Module Go To Pinpoint Test L . C1917 Steering Electronic Variable Orifice (EEVO) Out-of-Range Fault Air Suspension Control Module Go To Pinpoint Test Q .
  • Uneven vehicle height
  • Circuitry.
  • Rear pneumatic fault.
  • Air compressor assembly.
  • Air suspension control module.
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Nov 06, 2015 | 2002 Lincoln Navigator

2 Answers

Air suspention is fally inflated and won't come back down..


some wher gote water in.check all connectors for water.
blow out whit air gun

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1 Answer

Air suspension in rear not inflating all fuses are fine


There is a relay for the air ride suspension. And also the compressor could be bad.

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2 Answers

Need help with a 2001 Expedition air suspension problems


I will try to help you. There are just a few things that can be tried for free and sometimes a better Scanner can be hooked up to diagnose the suspension system. The Scanners vary by store among Autozone, Advance, and Oreilys autoparts.

The Relays in the Powerbox could be bad. Register your vehicle on Autozone.com and get free Fusebox layouts and wiring diagrams, which are color coded.

The rear cargo lid and all 4 doorjam switches must be closed in order for the airpump to work. There should be a Master dump(vent) solenoid inside the Drivers front fender ahead of the front tire. When this solenoid corrodes, it can stick in an open position and lock out the airpump.

Inversely, if stuck in the opposite position, it can keep the car raised up.

For the airlines and suspension bags a mix of soapy water in a spray bottle will detect an air leak when sprayed on the lines and suspension bags. This will produce bubbles. But the suspension does need to have air in it for this test to work.

When you do have pressure, remember that these are high pressure lines if you go to disconnect them and protect your eyes.

There are a few parts sites like Carparts or Car-parts.com which deliver Salvaged parts directly to your door via UPS or Fed-Ex. Price comparisions give you a choice of who to buy from and the site has full contact info.

You can get a clue from how the vehicle sits. If back is down or if one side is down, a partial inflation means the pump should still be good.

I hope my solution is helpful.

Aug 13, 2012 | 2001 Ford Expedition

1 Answer

Air bags suspension won't inflat. Checked all fuses & air suspension switch. What can the problem be?


Probably failed seal or air bag leaking air. Check again and try to see if this will do the trick. Sometimes pvc line could fail to deliver air to the bag too!

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2 Answers

Removing rear air suspension on GMC Envoy


Just behind right rear tire up in the wheel well. Air inlet is inside right rear quarter near the accessory inflator. Compressor runs 3 lines one for the accessory inflator and one for each air bag.
THere are also 2 sensors, one on each trailing arm that senses load and then raises and lowers accordingly.

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2 Answers

I cant find where the air suspension sytem is on my 1996 ford crown vistoria. The air bags on the rear tires will not inflate


make sure its turned on, the switch is in the trunk. The compressor is in RF area ahead of RF tire, the fuse which may be blown is in the fuse box at RF wheel under the hood. if the fuse is blown, its because the compressor has run too long trying to pump up the air bags which are leaking. it may need the bags and compressor, there are several companies that make springs for the rear to replace the bags.

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have to check the compressor run-check-check the fuse or relay switch that drives the compressor

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