Jaguar XJ (X350). Manual — part 819

303-12C : Intake Air Distribution and Filtering – 2.7L V6

– TdV6

Specifications

Specifications

Torque Specifications

Description

Nm lb-ft lb-in

Air cleaner retaining bolt 8

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71

Description and operation

Intake Air Distribution and Filtering

Item Part Number

Description

1

—

Air cleaner outlet pipe

2

—

Air cleaner cover

3

—

Air cleaner element

4

—

Air cleaner base

5

—

Air cleaner intake pipe

NOTE:

The air cleaner outlet pipe and air cleaner cover are only supplied as an assembly and
must not be disassembled.

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The primary functional requirements of the air induction system is to:

deliver clean filtered air to the engine with minimum pressure loss.

to reduce the engine intake and structure related noises to within legal & vehicle

requirements.

manage the induction of water, sand or snow to prevent adverse effect on vehicle

operation.

minimize air temperature rise over ambient air temperature at the throttle body/turbo in

high ambient conditions.

purge the hot air from the intake system quickly whilst the engine is hot, and after a period

of rest. This is to maximize engine drive away performance.

Diagnosis and testing

Intake Air Distribution and Filtering

Overview

There are changes to the engine management system (EMS) for 2006 my, the most obvious of which

will be the change to 7-digit diagnostic trouble codes (DTCs) from the familiar 5-digit.

Refer to the DTC index in this section for guidance on how to use these codes with the Jaguar

approved diagnostic system or a scan tool.

For information on the operation of the system,

Intake Air Distribution and Filtering

Inspection and Verification

1 . Verify the customer concern.

2 . Visually inspect for obvious signs of mechanical and electrical damage.

Mechanical

Electrical

Hoses and ducts (damage/connections)

Air cleaner element (contaminated/blocked)

Restricted air intake

Vacuum hoses

Pipework to turbochargers

Turbocharger(s)

Charge air coolers (contaminated/blocked)

Mass air flow (MAF) sensor(s)

Intake air shutoff throttle

Harness (security/damage)

Connections (security/damage)

Port de-activation system

3 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible)

before proceeding to the next step.

4 . If the cause is not visually evident use the Jaguar approved diagnostic system or a scan tool to

retrieve the fault codes before proceeding to the DTC index, or the symptom chart if no DTCs are set.

Symptom chart

Symptom

Possible cause

Action

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