Inadequate A/C Performance / Direct Pressure Sensing Valve Replacement (LTB00693NAS2)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2016-07-15
Reference number: LTB00693NAS2
Supersedes refnos: LTB00693, LTB00693NAS1

INADEQUATE A/C PERFORMANCE / DIRECT PRESSURE SENSING VALVE REPLACEMENT

TECHNICAL SERVICE BULLETIN

Reference Number(s): LTB00693NAS2, Date of Issue: July 15, 2016

LAND ROVER:	2010-2012 LR2 (LF); 2010-2016 LR4 (LA); 2014 Onwards Range Rover Sport (LW); 2010-2013 Range Rover Sport (LS); 2013 Onwards Range Rover (LG); 2010-2012 Range Rover (LM)
SECTION:	412-01 / -03
AFFECTED VEHICLES:	LR2 (LF) Model Year: 2010-2012 VIN: 165970-321214 Assembly Plant: Halewood; LR4 (LA) Model Year: 2010-2016 VIN: 513326 Onwards Assembly Plant: Solihull; Range Rover Sport (LW) Model Year: 2014 Onwards VIN: 001154 Onwards Assembly Plant: Solihull; Range Rover Sport (LS) Model Year: 2010-2013 VIN: 215623-814822 Assembly Plant: Solihull; Range Rover (LG) Model Year: 2013 Onwards VIN: 001204 Onwards Assembly Plant: Solihull; Range Rover (LM) Model Year: 2010-2012 VIN: 306627-393639 Assembly Plant: Solihull

CONDITION SUMMARY

Situation: Inadequate A/C performance may be exhibited. Upon inspection, low pressure is recorded on the high pressure system, high pressure is recorded on the low pressure system, and the compressor clutch (where applicable) is working properly.

Cause: This may be caused by the A/C compressor Direct Pressure Sensing (DPS) valve being worn.

Action: Should a customer express this concern, follow the Service Instruction outlined below.

PARTS

PARTS INFORMATION

LR061463	Compressor / Direct Pressure Sensing (DPS) Valve kit - LR2 (L359); LR4 (L319) 5.0L NA V8; Range Rover Sport (L320); Range Rover (L322)	1
LR086045	Compressor / Direct Pressure Sensing (DPS) Valve kit - LR4 (L319) 3.0L SC V6; Range Rover Sport (L494); Range Rover (L405)	1

TOOLS

Refer to Workshop Manual for any required special tools.

WARRANTY

NOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to TOPIx to obtain the latest repair time.

NOTE: DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.

DESCRIPTION	SRO	TIME (HOURS)	CONDITION CODE	CAUSAL PART
Direct Pressure Sensing (DPS) Valve - Renew - LR2 (L359)	82.10.12	1.1	63	LR061463
Direct Pressure Sensing (DPS) Valve - Renew - LR4 (L319 - 3.0L SC V6)	82.10.12	2.7	63	LR061464
Direct Pressure Sensing (DPS) Valve - Renew - LR4 (L319 - 5.0L NA V8)	82.10.12	2.8	63	LR061463
Direct Pressure Sensing (DPS) Valve - Range Rover Sport (L494 - 3.0L Td6)	82.10.12	2.1	63	LR061464
Direct Pressure Sensing (DPS) Valve - Range Rover Sport (L494 - 3.0L SC V6)	82.10.12	1.1	63	LR061464
Direct Pressure Sensing (DPS) Valve - Range Rover Sport (L494 - 5.0L SC V8)	82.10.12	1.1	63	LR061464
Direct Pressure Sensing (DPS) Valve - Range Rover Sport (L320)	82.10.12	3.0	63	LR061463
Direct Pressure Sensing (DPS) Valve - Range Rover (L405-3.0L Td6)	82.10.12	2.5	63	LR061464
Direct Pressure Sensing (DPS) Valve - Range Rover (L405-3.0L SC V6)	82.10.12	1.1	63	LR061464
Direct Pressure Sensing (DPS) Valve - Range Rover (L405-5.0L NA / SC V8)	82.10.12	1.1	63	LR061464
Direct Pressure Sensing (DPS) Valve - Range Rover (L322-5.0L NA V8)	82.10.12	3.8	63	LR061463
Direct Pressure Sensing (DPS) Valve - Range Rover (L322-5.0L SC V8)	82.10.12	3.7	63	LR061463

NOTE: Normal Warranty procedures apply.

SERVICE INSTRUCTION

NOTE: Prior to carrying out the service instruction, carry out the Climate Control System - General Information - Diagnosis and Testing (see TOPIx Workshop Manual section 412-00: Climate Control System).

NOTE: The Direct Pressure Sensing (DPS) valve may also be referred to the Electronic Control Valve.

Remove the A/C compressor:
- LR2 (L359) , Range Rover Sport (L494), and Range Rover (L405): see TOPIx Workshop Manual section 412-01: Climate Control System
- LR4 (L319), Range Rover Sport (L320), Range Rover (L322): see TOPIx Workshop Manual section 412-03: Air Conditioning
Replace the A/C compressor Direct Pressure Sensing (DPS) valve replacement procedure.

NOTE: Make sure foreign materials do not enter the Direct Pressure Sensing (DPS) valve hole on the cylinder head when the DPS valve is removed.
Using compressed air or similar, remove all foreign materials from around the DPS valve/cylinder head.

CAUTION: Make sure to not damage the circlip housing in the cylinder head.
Place the A/C compressor on a clean flat work surface.
- Using a suitable tool, remove and discard the circlip that retains the DPS valve in the compressor cylinder head.
CAUTION: Make sure to not damage the circlip housing in the cylinder head.
Using suitable tools, release the DPS valve.

NOTE: Take care to remove the DPS valve in a vertical direction to avoid damage to the inside wall of the cylinder head.
Remove by hand the DPS valve from the A/C compressor cylinder head; discard the DPS valve.
Inspect the inside wall of the cylinder head for scratches, scoring, or foreign material.
Apply compressor oil (Polyalkylene Glycol [GPA] SPA2 Oil) to the O-rings of the new DPS valve.

Install the DPS valve:

Apply a downward pressure by hand.

If required, use a suitable tool to press fully into position to allow installation of the new circlip.

Install the new circlip (supplied in the kit).
Install the A/C compressor:
- LR2 (L359), Range Rover Sport (L494), and Range Rover (L405): see TOPIx Workshop Manual section 412-01: Climate Control System
- LR4 (L319), Range Rover Sport (L320), Range Rover (L322): see TOPIx Workshop Manual section 412-03: Air Conditioning