Alarm involuntary operation - sensor malfunction

ALARM INVOLUNTARY OPERATION - SENSOR MALFUNCTION

Model

Freelander

Affected vehicles

All 5 door vehicles prior to VIN WA 607436

Date

1998-03-25

Reference

Bulletin 0006, CDS ref L8402bu

Bulletin text

Freelander

AFFECTED RANGE:

All 5 door vehicles prior to VIN WA 607436

PROBLEM:

ALARM INVOLUNTARY OPERATION - SENSOR MALFUNCTION

Alarm is activated involuntarily, i.e. without vehicle disturbance

CAUSE:

Volumetric sensor affected by normal cabin air moisture when vehicle is left unattended.

ACTION:

An improved volumetric sensor number YWC 106310 has been fitted from VIN WA 607436.

Before replacing sensor with the above part, the following test should be carried out to confirm problem is volumetric and not perimetric:

Using TestBook: In ‘Security’ section, go to ‘Information’ and view the ‘Alarm Trigger Readings Buffer’. Up to 4 involuntary alarm events will be recorded. Ignore any test alarm events when interrogating trigger readings.

Volumetric faults: If last genuine alarm event was caused by a Volumetric fault, replace volumetric sensor, refer to the Workshop Manual ‘Electrical - Repairs’ section for full replacement information.

NOTE:

Replacement of sensor (repair number 86.77.29 ) will first require removal of headlining, ensure care is taken to prevent trim damage. Replace fir tree fasteners for new (see PARTS INFORMATION ).

Bulletin N o : 0006 L8402bu 1 25.03.98

part

Perimetric Faults: If last alarm event was triggered by other causes, i.e. a Perimetric fault, investigate cause and rectify. Check bonnet and door latch switching etc. for intermittent faults.

PARTS INFORMATION:

YWC 106310 - Sensor volumetric alarm

JPC4651LUM - Fastener, fir tree, headlining

WARRANTY CLAIMS: Use Complaint Code: 6S2U

Volumetric sensor renew: Use S.R.O.: 86.77.29 Time allowance: 2.40 Hrs

TestBook diagnosis: Use S.R.O.: 86.90.43/01 Time allowance: 0.40 Hrs