Jaguar XJ (X350). Manual — part 846

Description and operation

Electronic Engine Controls

Item

Part Number

Description

1

—

Throttle position (TP) sensor

2

—

Engine coolant temperature (ECT) sensor

3

—

Knock sensor - LH

4

—

Oil pressure sensor

5

—

Oil temperature sensor

6

—

Fuel temperature sensor

7

—

Crankshaft position (CKP) sensor

8

—

Camshaft position (CMP) sensor

9

—

Variable camshaft timing oil control solenoid

Item

Part Number

Description

1

—

Fuel rail pressure (FRP) sensor

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2

—

Manifold absolute pressure (MAP) sensor

3

—

Intake manifold tuning (IMT) valve

4

—

Intake manifold tuning (IMT) valve

5

—

Knock sensor - RH

Item

Part Number

Description

1

—

Mass air flow (MAF) sensor

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Item

Part Number

Description

1

—

Heated oxygen sensor (HO2S) - RH

2

—

Catalyst monitor sensor - RH

3

—

Catalyst monitor sensor - LH

4

—

Heated oxygen sensor (HO2S) - LH

Engine Control Module (ECM)

The electronic engine control system consists of a engine control module (ECM), located behind the

glove compartment, and a number of sensing and actuating devices. The sensors supply the ECM

with input signals which relate to the engine operating conditions and driver requirements. The

sensor information is evaluated by the ECM using the results to activate the appropriate response

from the actuating devices. The system provides the necessary engine control accuracy and

adaptability to:

minimize exhaust emissions and fuel consumption.

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