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Suspension light won't go off. how to disconnect.

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2002 GMC Envoy Leveling system out on back passenger side. What can be done to fix it?


Would need to find out what's wrong first ! The air shock could be bad , ride hight sensor , air line could be broke etc...
The air suspension compressor assembly has the ability to detect faults and indicate the appropriate fault code via a blink code on the inflator switch LED. Is the light on ?
The air suspension compressor assembly will indicate the code when the condition that caused the code is current. In some instances the air suspension compressor assembly may set a flag that requires the ASCM to be reset. The ASCM will reset on its own after the ignition has been turned off for more than 2 1/2 hours or if the air suspension fuse has been removed with the ignition key turned off.

Perform a visual inspection checking for the following:
• Disconnected or damaged air lines.
• Disconnected or damaged air sensor link.
• Disconnected or damaged electrical harness

Trim Height Uneven or Low
Step
Action
Yes
No
Schematic Reference: Suspension Controls Schematics
1
Did you perform the Air Suspension Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Air Suspension
2
Did you review the Air Suspension Description and Operation?
YES - Go to Step 3
NO - Go to Air Suspension Description and Operation
3
Perform a visual inspection checking for the following:
• Disconnected or damaged air lines.
• Disconnected or damaged air sensor link.
• Disconnected or damaged electrical harness.
Did you find and correct the condition?
YES - Go to Step 9
NO - Go to Step 4
4
Cycle the rear compartment inflator switch.
Does the compressor operate?
YES - Go to Step 5
NO - Go to Inflator Inoperative
5
Check the vehicle D-height . Refer to Trim Height Specifications and Trim Height Inspection .
Are the measurements within the specified values?
YES - Go to Step 6
NO - Go to Step 7
6
Perform the air suspension air leak diagnosis. Refer to Air Suspension Air Leak Diagnosis .
Did you find and correct the condition?
YES - Go to Step 10
NO - System OK
7
Recalibrate the air suspension level sensors. Refer to Rear Air Spring Level Sensor Calibration .
Did you find and correct the condition?
YES - Go to Step 10
Go to Step 8
8
Replace the air spring sensor. Refer to Air Spring Leveling Sensor Replacement .
Did you find and correct the condition?
YES - Go to Step 10
NO - Go to Step 9
9
Subtract the Service Preferred Trim Height specification from the value obtained in step 12 of the Air Spring Leveling Sensor replacement procedure.
Add the value to the Service Preferred Trim Height specification. This is the adjusted D-Height measurement.
Repeat the Air Spring Calibration procedure using this value in place of the D-Height specification in step 7 of the Air Spring Calibration procedure.
YES - Did you find and correct the condition?
NO - Go to Step 10
--
10
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
--

Jun 22, 2017 | GMC Cars & Trucks

1 Answer

I did convert air suspension system on my AUDI 2003, and instruction said how to deactivate air suspension leveling light. But after disconnecting the plugs "engine check" warning light come ON. any...


You need to check with dealer to remove fault code for suspension thru 5052 scanner. The system is sending a fault and it eventually ends up in the ECM

Aug 29, 2013 | 2001 Audi allroad

1 Answer

Rear Air Suspension won't air up


take the sensor arm loose and manually operate it, when it is up, it thinks the suspension is low. Spray the bags and hoses with soapy water to find any leaks, dawn dish detergent works well. repair any leaks. If no leaks manifest, take a hose loose and see if you are actually getting air pressure from the air pump. Just because it is running, doesn't mean it is supplying pressure.

Sep 20, 2012 | 2001 Ford Expedition

1 Answer

My 2000 lincoln town car rear suspension will work fine sometimes but then the air suspension light will come on and the air suspension relay under the hood will start buzzing.I've replaced the relay...


Hello, I would suggest having the Air Suspension scanned at its Diagnostic plug. You will have to get a scanner capable of reading this unique Diagnostic plug. Now Autozone, Advance, and Oreillys have scanners and you will probably need to call ahead to see if their equipment will do this scan. These above parts stores will scan for free.

As you probably know by now, guessing can be expensive. You may have bought a Relay you did not need. If you have time and determination, you may want to disconnect the Electric connectors at each suspension bag and check for corrosion. WD-40 will help clean the contacts.

It is also possible to disconnect each individual wheel sensor when the buzzing is occurring and you may be able to isolate the problem wheel. Then go from there for Grounding straps and so on.

Your Air suspension depends on all the doorjam and trunklid switches to make a circuit or the Air suspension will not work properly. If the trunklid did not close enough to activate a "trunk ajar" light, you may still have had enough slack for the Air suspension circuit to fail.

You can get into a lot of manual wire testing without a scanner. I would appreciate a note when the problem is solved.

Jun 25, 2011 | 2000 Lincoln Town Car

1 Answer

I need to change the rear breaks on my navigator i need to find the air suspension turn off switch


It's in your owner manual. Year?

SECTION 204-05A: Vehicle Dynamic Suspension - Rear 2002 Expedition/Navigator Workshop Manual
REMOVAL AND INSTALLATION Switch -Air Suspension Removal and Installation
  1. Disconnect the battery ground cable. For additional information, refer to Section 414-00 .
  1. NOTE: The air suspension switch and bracket is mounted below the RH side of the instrument panel.
    Disconnect the electrical connector and detach the air suspension switch from the bracket.

Mar 28, 2011 | Lincoln Navigator Cars & Trucks

2 Answers

Air suspension fault light is on. What does that mean? Is it a big expense?


I have this same problem on my 2004 jag....McAllen Tx dealership want 1499 dollars to fix it! I said no.

Sep 16, 2010 | 2004 Jaguar XJR-Series

1 Answer

'Height Hi' light flashing after pneumatic suspension removed


I would disconnect the compressor before pulling fuses. The fuse may be operating other things of value (body control module) You may always have that light on unless u take it to a specialist.

Mar 09, 2017 | 1995 Subaru Legacy

1 Answer

ABS light stays on after replacing front axles and cv joint on 1998 maxima


If you have NOT had the abs sensor disconnected as part of the process for this repair then it is likely that the sensor has been damaged by the knocking of a hammer on the suspension!
If you have had it disconnected then the dealer will need to reset it with their diagnostic equipment. You should always remove abs sensors before hammering on suspension components

Aug 23, 2009 | 1998 Volvo V70

15 Answers

Air suspension inactive, HDC inactive, ABS light on, Range Rover


Air Suspension Inactive usually means there is a problem with the Air Suspension. However, it will also come up when alternator or battery voltage is low, or when you reset (disconnect and then connect) the battery. To reset it manually: while in P(ark), turn steering wheel all the way left, hold few seconds, and then all the way right, hold few seconds. All the warning lights will go out. Most common failure is the passenger front air strut, since batteries are prone to leaking acid, it leaks right on top of the rubber airbag and burns through it. Dealer willcharge you one hour to diagnose, or you can easily diagnose this by looking at the ride height of each particular corner of the truck. If its sits low, or emits hissing sound when you park the truck, its leaking. If you keep driving with leaky air strut, you risk burning up the air compressor, as its working extra hard to compensate for the leak. Replacing the strut is easy 45min job even for a novice mechanic, and you can do it yourself. Strut can be found new for approx $750 online. If you are fed up with air suspension issues, there is a $700 kit that converts the truck to springs, and disables all of the air suspension. Look up Arnott Industires

Dec 29, 2008 | 2004 Land Rover Range Rover

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