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Welcome!

Air Suspension Configuration Device

Applies To:

Item: 7982
For LR3 (L319) & Range Rover Sport (L320)

7980 version 2

Function and Installation:

Requirement: When replacing a dynamic air spring suspension with a coil spring suspension, the EAS (Electronic Air Suspension) ECU (Electronic Control Unit) will generate error messages due to the lack of control of the coil spring suspension.

IMPORTANT! The device will automatically store the Vehicle Identification Number (VIN) of the first vehicle that it is connected to. It will then be permanently locked to that vehicle.

NOTE: The EAS ECU is located on the left side (driver) of the vehicle for the LR3 (L319) and Range Rover Sport (L320). It is located on the right side (passenger) on the Range Rover HSE (L322).

Before You Start:

  • Ensure that the battery is fully charged.
  • Ensure the vehicle is in Park / Neutral with the Parking Brake applied.
  • It is recommended that the headlights are turned off throughout the configuration process.
  • Do not start the engine at any point during the configuration process.

Installing the Override Module:

Tools Needed:

  • Flat Blade Screwdriver (or Panel Popper to remove Foot Rest Top)
  • 10mm Socket with extension
  • #15 Torx Driver
  • Phillips Screwdriver
  • Wire Citters
  • Wire Strippers

Procedure:

Access to EAS ECU:

1. Remove the Foot Rest by first popping the cover off, then remove 2 ea. nuts. (See figure 1 & 2)

7982
Figure #1.

7982
Figure #2.

2. With the Foot Rest out, you can remove the Left Side Panel by taking out the hood release lever (Torx Screw) and pulling the panel toward you. (See figure 3 & 4)

7982
Figure #3.

7982
Figure #4.

3. Loosen the 2 screws securing the upper panel and drop it down. You don't need to remove it as long as you can secure it so that it is out of the way as you work on the EAS ECU wiring harness. (See figure 5)

7982
Figure #5.

4. Remove the panel just below the steering wheel by pulling it toward you. It will come right out as seen in this picture. (See figure 6)

7982
Figure #6.

5. Locate the EAS ECU. It will be mounted fairly high up on the left wall in the cavity that you have just exposed with the removal of the panels. (See figure 7)

7982
Figure #7.

6. Locate the mounting bolt at the top of the EAS ECU. It will be difficult to see, but you can feel it at the top of the ECU. Use the 10mm socket to remove the bolt. The ECU can then be pulled down by first pushing it up a bit to free it from the mounting "pegs" along the bottom of the unit. With the unit free of its mounting you can maneuver it down allowing access to the connectors and wiring harness. (See figure 8)

7982
Figure #8.

7. Locate connector C0867 and unplug it from the ECU. (See figure 9)

7982
Figure #9.

8. Examine the backside of the connector and identify the 2 Data wires. The wires are in position 16 and 19 of the connector. They will be twisted together. (See figure 10, 11, 12)

7982
Figure #10.

7982
Figure #11.

7982
Figure #12.

9. Cut the 2 data wires. Be sure to double (and triple) check the wires before cutting. As you might imagine, cutting the wrong wires will cause you much difficulty as you proceed with this installation. (See figure 13)

7982
Figure #13.

10. Strip the insulation from each end of the 2 Data wires you just cut (4 strips total) and strip all 6 wires on the Filter Module Wiring Harness (supplied with the 7982 module) by 5/16 inch. (See figure 14)

7982
Figure #14.

11. Using the Posi-Lock wire splices connect the Data Wires to the Filter Module Wiring Harness as follows:

NOTE: It is VERY important that you take care to get the proper wires spliced together.

Vehicle Wires
Filter Module Wiring Harness
Data +, Yellow/Brown, ECU Side

Brown

Data +, Yellow/Brown, Vehicle Side
Yellow
Data -, Yellow/Black, ECU Side
Orange
Data -, Yellow/Black, Vehicle Side
Green
Also, please refer to Addendum "A" for more information on the wire splicing.

7982
Addendum A.

12. After the Data Wires are spliced, your harness should look like this. (See figure 15)

7982
Figure #15.

13. Locate the positive power wire on C0867. It will be in position 20 (next to the Yellow/Black wire you just spliced) (See figure 16)

7982
Figure #16.

14. Using the smaller (Red / Brown) Posi-Tap connect the Red wire from the Filter Wiring Harness to the Green/White wire. You do NOT need to cut the wire, we are just tapping into the power on this wire. (See figures 17, 18)

7982
Figure #17.

7982
Figure #18.

15. Locate connector C2321, and unplug it from the ECU. (See figure 19)

7982
Figure #19.

16. Locate the Black wire in position 24 of C2321 and using the larger Black Posi-Tap connect the Black wire from the Filter Wiring Harness to this wire. Just like with the power wire in step # 14, we are NOT cutting this wire, just splicing. (See figures 20, 21, 22)

7982
Figure #20.

7982
Figure #21.

7982
Figure #22.

17. Reinstall all of the panels, and the Foot Rest.

7982
Figure #23.

TROUBLESHOOTING

If you still have suspension errors after install, most often the problem is a related missed step. Performing these steps in order will often solve the issue:

1. Clear all fault codes from ALL ECU's (not just EAS fault codes).

2. Disconnect the battery.

3. Unplug the four ride height sensors and make sure they are taped-off.

4. Reconnect battery.

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