Air Suspension Pressure Switch Failure (60/01/03/NAS)
Publication date: 2003-01-17Reference number: 60/01/03/NAS
AIR SUSPENSION PRESSURE SWITCH FAILURE
TECHNICAL SERVICE BULLETIN
| LAND ROVER: | Range Rover (LP) |
| ISSUE: | 1 |
| SECTION: | Suspension |
| AFFECTED VEHICLES: | Range Rover (LP) - All |
SITUATION
WARNING LIGHT ILLUMINATES AND AIR SUSPENSION INOPERATIVE
A customer may complain of inoperative air suspension and/or that an air suspension warning light has illuminated.
RESOLUTION
REPLACE PRESSURE SWITCH AS FIRST REPAIR EFFORT
Interrogation of the Air Suspension Electronic Control Unit (ECU) with TestBook/T4 may a fault code "inlet solenoid valve stuck open.". The code could mean that the pressure switch is faulty. The code does not necessarily mean that the valve block must be replaced. The pressure switch may stick intermittently and TestBook/T4 has not diagnosed the fault correctly.
After interrogation of the ECU with TestBook/T4 determines the fault code "inlet solenoid valve stuck open," replace the pressure switch as the first effort to repair the vehicle.
PARTS INFORMATION
| Part Number | Description | Qty |
|---|---|---|
| ANR3902 | Air suspension pressure switch | 1 |
Locally sourced:
- Loctite 572 ....... Low strength sealant
WARRANTY CLAIMS
| SRO | Description | Time |
|---|---|---|
| 60.50.07 | Install replacement | 0.70 hrs. |
FAULT CODE: Z
Normal warranty policy and procedures apply.
Material allowance is included in labor operation.
REPAIR PROCEDURE
REPLACE AIR SUSPENSION PRESSURE SWITCH
- Refer to RAVE Workshop Manual, section 60.50.07 and remove pressure switch.
- Apply Loctite 572 to the thread of the replacement pressure switch
- Tighten the new switch to 13 N.m (10 lbf.ft).
- Raise and lower the suspension.
- If the air suspension is still inoperative then further investigation will be required.