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Makes 🢒 Saab 🢒 2006 🢒 9-7x 🢒 Bulletins 🢒 SMU - Addition of Air Suspension Leak Diagnosis

SMU - Addition of Air Suspension Leak Diagnosis

Subject:Addition of Air Suspension Leak Diagnosis

Models:2004-2006 Buick Rainier Models
2002-2006 Chevrolet TrailBlazer Models
2002-2006 GMC Envoy Models
2002-2004 Oldsmobile Bravada Models
2005-2006 Saab 9-7X


This bulletin is being issued to add the Air Suspension Leak Diagnosis in the Air Suspension sub-section of the Service Manual.

The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

Air Suspension Leak Diagnosis

Step

Action

Yes

No

1

Did you review the Air Suspension Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Air Suspension Description and Operation

2

    Caution: Caution: A sudden release of pressure may cause personal injury or damage to the vehicle. The air suspension is under pressure until the air supply lines are disconnected.

    Important: The ECAS fuse is a 30 AMP fuse.

  1. Remove the ECAS fuse from the under hood electrical center.
  2. Start the Engine.
  3. Inspect the rear air springs for leaks.

Did you find a leak?

Go to Step 13

Go to Step 3

3

Important: Each air line has a bubble 18 - 22 mm (0.70 - 0.80 in) from the end of the line acts as a stop. The bubble should be seated next to the ferrule nut with the line fully seated.

Inspect the air lines at the ECAS compressor ferrule Nuts for proper installation.

Are the air lines properly installed?

Go to Step 5

Go to Step 4

4
  1. Loosen the ferrule nut and push the line in until the line stops or the bubble is within 2 mm (0.08 in) from the ferrule nut.

    2. Important: Do not over tighten the ferrule nut.

  2. Tighten the ferrule nut to 2.5 N·m (22 lb in).

Did you find and correct the condition?

Go to Step 15

Go to Step 5

5

Inspect the compressor ferrule nuts.

Are the ferrule nuts stripped or cross threaded?

Go to Step 13

Go to Step 6

6

Inspect the ECAS air lines for any kinked, pinched or damaged air line from the compressor to the air springs.

Did you find and correct the condition?

Repair Step

Go to Step 7

7

    Important: Each air line has a bubble 18 - 22 mm (0.70 - 0.80 in) from the end of the line acts as a stop. The bubble should be seated against the collet on the top of the air spring.

  1. Inspect the air lines at the air springs for proper installation.
  2. Push in and pull outward on the air line.

Did the air line remain seated in the air spring?

Go to Step 8

Go to Step 11

8
  1. Disconnect the air lines from the air springs.
  2. Inspect for very fine scratches in the line to collet mating surfaces.

Are scratches on the mating surfaces?

Go to Step 14

Go to Step 9

9

Check for leaks with soapy water using the following steps:

  1. Lower the vehicle.

    2. Important: The ECAS fuse is a 30 AMP fuse.

  2. Install the ECAS fuse into the under hood electrical center.
  3. Turn ON the ignition, engine OFF.
  4. Allow the vehicle to rise until the compressor shuts OFF and curb height is achieved.
  5. Turn OFF the ignition.
  6. Remove the ECAS fuse from the under hood electrical center.
  7. Raise the vehicle.
  8. Remove the wheelhouse panel of the deflated air spring side. Refer to Wheelhouse Panel Replacement.
  9. Spray soapy water on the top of the air spring collet to air line area. Look for bubbles.
  10. Spray soapy water on the compressor to air line connection. Look for bubbles.
  11. Repair as necessary.

Did you find and correct the condition?

Go to Step 15

Go to Step 10

10

Check the compressor output pressure using the following steps:

    Important: The ECAS fuse is a 30 AMP fuse.

  1. Install the ECAS fuse into the under hood electrical center.
  2. Open the rear hatch and locate the accessory inflator outlet in the right rear quarter panel.
  3. Turn ON the ignition, engine OFF.
  4. Install the accessory inflator tool assembly provided with the vehicle.
  5. Turn the accessory inflator switch to the on position.

Does the compressor output measure 138 - 724 kPa (20 - 105 psi)?

System OK

Go to Rear Air Springs Do Not Inflate

11

Replace the air spring. Refer to Air Spring Replacement.

Did you complete the repair?

Go to Step 15

--

12

Replace the air suspension air line. Refer to Air Spring Replacement

Did you complete the repair?

Go to Step 15

--

13

Replace the air spring compressor. Refer to Air Spring Compressor Replacement.

Did you complete the repair?

Go to Step 15

--

14

Replace the air spring and air line. Refer to Air Spring Replacement and Air Suspension Air Line Replacement.

Did you complete the repair?

Go to Step 15

--

15

    Important: The ECAS fuse is a 30 AMP fuse.

  1. Install the ECAS fuse into the under hood electrical center.
  2. Return the air suspension to it's original configuration.
  3. Turn ON the ignition, engine OFF.
  4. Allow the vehicle to rise until the compressor shuts OFF and curb height is achieved.
  5. Operate the system in order to verify the repair.

Did you correct the condition?

Go to Step 2

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