Jaguar AJV8 engine / 5HP24 transmission. Instruction - page 12

AJ-V8/5HP24

49

Engine Management

Sensors

Engine management sensors that input to the
ECM are detailed below:

Barometric Pressure Sensor
The barometric pressure sensor is installed in the
ECM. It senses ambient pressure in the engine
management enclosure of the engine
compartment.

HO2S
A HO2S is installed in the intake end of each
catalytic converter. They provide inputs
proportional to the oxygen content of the exhaust
gases leaving the engine. The heater elements
improve the response time of the sensors during
engine warm-up.

O2S
An O2S is installed in the outlet end of each
catalytic converter. They provide inputs
proportional to the oxygen content of the exhaust
gases leaving the catalytic converter.

Intake Air Temperature Sensor
The intake air temperature sensor is a thermistor
integrated into the same housing as the MAFS, in
the intake duct immediately downstream of the
intake air cleaner. It provides an input inversely
proportional to the temperature of the air in the
duct.

MAFS
The MAFS is a hot wire sensor that provides an
input which is (approximately) proportional to
mass air flow into the engine.

OXYGEN SENSORS

303-119

MAFS/INTAKE AIR TEMPERATURE SENSOR

303-128

H02S

02S

AJ-V8/5HP24

50

Engine Management

Camshaft Position Sensor
The camshaft position sensor is installed in B
bank cylinder head at the rear of the intake
camshaft. It is a variable reluctance sensor that
provides an input of intake camshaft position.

ECT Sensor
The ECT sensor is installed in the coolant outlet
duct. It provides an input of coolant temperature
at the cylinder head outlets.

Engine Speed Sensor
The engine speed sensor is installed at the rear
of the bed plate. It is a variable reluctance sensor
that provides an input of engine crankshaft speed
and position.

Knock Sensors
The knock sensors are installed in the cylinder
block on the inboard side of each cylinder bank.
They are piezo-electric sensors that provide
inputs to detect and locate detonation during
combustion.

ELECTRONIC THROTTLE SENSORS

Accelerator Pedal Position Sensor
The accelerator pedal position sensor is
connected to the input shaft in the electronic
throttle. It is a dual track potentiometer that
provides inputs of driver demand at the
accelerator pedal.

Mechanical Guard Position Sensor
The mechanical guard position sensor is a single
track potentiometer connected to the mechanical
guard in the electronic throttle. It provides an
input of the position of the mechanical guard.

Throttle Position Sensor
The throttle position sensor is a dual Hall effect
sensor in the motor end of the electronic throttle.
It provides inputs of the position of the throttle
valve.

Accelerator Pedal Position
and Mechanical Guard
Position Sensors

Throttle Position
Sensor

303-090

AJ-V8/5HP24

51

Engine Management

ENGINE SENSORS

Knock Sensors

ECT Sensor

Camshaft Position Sensor

Engine Speed Sensor

303-127

AJ-V8/5HP24

52

Engine Management

M

ECM Inputs and Outputs
1.

Intake Air Temperature Sensor

2.

MAFS

3.

Throttle Position Sensor

4.

(Throttle) dc Motor

5.

EGR Valve

6.

Fuel Injector

7.

Camshaft Position Sensor

8.

On-plug Ignition Coil

9.

H02S

10. 02S
11. Engine Speed Sensor
12. Accelerator Pedal Position

Sensor

13. Mechanical Guard Position

Sensor

14. ECT Sensor
15. Knock Sensors

ENGINE MANAGEMENT SCHEMATIC

1

3

2

4

5

12

13

6

8

14

15

6

7

9

11

10

8

9

10

303-130

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