Intermittent operation of air conditioning

INTERMITTENT OPERATION OF AIR CONDITIONING

Model

Range Rover

Affected vehicles

All Diesel derivatives

Date

1998-02-04

Reference

Bulletin 0002, CDS ref L8351bu

Bulletin text

Range Rover

AFFECTED RANGE:

All Diesel derivatives

PROBLEM:

INTERMITTENT OPERATION OF AIR CONDITIONING

Air conditioning operates intermittently with the handbook symbol illuminated on the Automatic Temperature Control (ATC) message display.

TestBook diagnoses Fault Code 32 - ATC compressor clutch failure with open circuit or short circuit.

CAUSE:

Poor connection at connector C119 at the ATC compressor - arrowed in illustration.

In this situation the voltage at connector C244, pin 7 on the ATC unit will drop below 10 volts. This is insufficient to run the compressor.

ACTION:

Check connector C119 closely evidence of poor continuity, particularly between the male and female pins within the connector. Make good any sign of poor continuity. Check also to ensure that the crimping under the harness sheath on the compressor link lead (part no. AMR3916) has not deteriorated in any way.

The Electrical Troubleshooting Manual Sections K4 page 10, Z5 page 17 and Z6 page 41 will be useful when identifying components.

Bulletin N o : 0002 L8351bu 1 04.02.98

for

PARTS INFORMATION:

Not applicable

WARRANTY CLAIMS: Use Complaint Code: 7S7Y

Use S.R.O.: 86.70.89/55

Time allowance: 0.20 Hrs