Freelander (LN) V6-2.5L (2004)
Intake Manifold: Customer Interest
Engine - Intake Manifold Rattles/Poor Engine Performance
No: 19/01/06NAS
FGN 310-00
Ref: 19/03/03/NAS
TA02TB01, TA021901, TA031901
Issue: 1
Date: June 26, 2006
KV6 Variable Intake Manifold System (VIS) Motor Diagnostic Aid
AFFECTED VEHICLE RANGE:
Freelander (LN)
All
SITUATION:
VIS MOTOR DTC, MANIFOLD RATTLE NOISE AND ENGINE PERFORMANCE DIAGNOSIS
This 'information only' bulletin has been issued to aid diagnosis and resolution of Diagnostic Trouble Codes (DTCs) related to valve actuator motors
assembled to the air intake manifold of the KV6 engine. A noticeable change in engine performance or a 'rattle' noise coming from the intake manifold
area during idle may be reported.
The Variable Intake Manifold System (VIS) on the KV6 engine incorporates two actuator motors ('VIS Motors') that control the positions of internal
flaps and butterfly valves which alter the volume and rate of air induction.
RESOLUTION:
RESOLVE VIS MOTOR DTC, NOISE AND PERFORMANCE CONCERNS
This bulletin details procedures to determine that the VIS motors and internals of the intake manifold assembly are functioning correctly.
Should a customer report a concern of a rattle noise heard from the intake manifold area during idle or a noticeable change in engine performance, refer
to the Repair Procedure detailed in this bulletin to diagnose and resolve VIS motor DTCs and performance concerns.
TOOLS:
RDS disc 30 (or later)
TestBook/T4 diagnostic equipment
WARRANTY CLAIMS:
Information only.
Normal Warranty policies and procedures apply.