2009 JAGUAR XF engine

Technical Training
Technical Introduction
NP10
-
V8JLR: AJ133 5.0
-
Liter DFI V8 Engine
Engine Management System
NP10-V8JLR 04/2009Printed in USA
NP10V8COV

Technical Training
NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine 04/14/2009
3-1
Engine Management System

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Engine Control Module . . . . . . . . . . . . . . . . . . . . . . 8
Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Crankshaft Position Sensor . . . . . . . . . . . . . . . . . . 11
Camshaft Position Sensor . . . . . . . . . . . . . . . . . . . 13
Engine Coolant Temperature Sensor . . . . . . . . . . 14
Knock Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Manifold Absolute Pressure Sensor . . . . . . . . . . . 16
Mass Air Flow Sensor . . . . . . . . . . . . . . . . . . . . . . 17
Temp. / Manifold Absolute Pressure Sensor . . . . 18
Throttle Position Sensor . . . . . . . . . . . . . . . . . . . . 19
Accelerator Pedal Position Sensor . . . . . . . . . . . . 21
Heated Oxygen Sensors . . . . . . . . . . . . . . . . . . . . 22
Ambient Air Temperature Sensor. . . . . . . . . . . . . 26
Ignition Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Fuel Tank Canister Purge Valve . . . . . . . . . . . . . . 28
Viscous Fan Control (Land Rover only) . . . . . . . 29
Controller Area Network. . . . . . . . . . . . . . . . . . . . 30
On-Board Diagnostic Monitoring . . . . . . . . . . . . . 31
Crankcase Ventilation System . . . . . . . . . . . . . . . 32

3-2
04/14/2009 NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine
Technical Training
Overview

Engine Management System

OVERVIEW
The 5.0-Liter V8 normally aspirated (NA) and super-
charged (SC) engines are managed by the engine control
module (ECM), which controls the following:
• Engine fuel metering
• Ignition timing
• Camshaft timing
• Camshaft Profile Switching (CPS)
• Closed loop fuel metering
• Knock control
• Idle speed control
• Emission control
• On-Board Diagnostics (OBD)
• Interface with the immobilization system
• Speed control
The ECM controls the engine fuel metering by provid-
ing sequential fuel injection to all cylinders. Ignition is
controlled by a direct ignition system, provided by eight
coil-on-plug (COP) units. The ECM is able to detect and
correct for ignition knock on each cylinder and adjust the
ignition timing for each cylinder to achieve optimum
performance.
The ECM uses a torque-based strategy to generate the
torque required by driver demand and the other vehicle
control modules, using input from various sensors to cal-
culate the required torque. The ECM also interfaces with
other vehicle electronic control modules to obtain addi-
tional information (road speed from the ABS control
module, for example). The ECM processes these signals
and determines how much torque to generate, using vari-
ous actuators to supply air, fuel, and spark to the engine
(electronic throttle, injectors, coils, etc.).

Technical Training
NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine 04/14/2009
3-3
Engine Management System

Overview

NA Component Location: Front of Engine
NP10V8089
THROTTLE BODY
MANIFOLD ABS
OLUTE PRESSURE S ENSOR
ENGINE
CONTROL MODULE
FUEL INJECTOR
IGNITION COIL
MASS AIR FLOW SENS OR
CAMS HAFT POS ITION
S ENS ORS
VARIABLE CAMS HAFT TIMING
S OLENOIDS
OIL LEVEL / TEMPERATURESENS OR CAMS
HAFT POS ITION
S ENS ORS
VARIABLE CAMSHAFT TIMING
S OLENOIDS MASS AIR FLOW
SENS OR

3-4
04/14/2009 NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine
Technical Training
Overview

Engine Management System

NA Component Location: Rear of Engine
NP10V8090
FUEL RAIL
PRESSURE S ENSOR
CAMS HAFT
PROFILE S WITCHING
S OLENOID
ENGINE
COOLANT TEMP. SENS OR
UPS TREAM
UHEGO
DOWNS TREAM
HO2S (2)
CRANKS
HAFT
POS ITION S ENSOR
UPS
TREAM
UHEGO
CAMS
HAFT
PROFILE S WITCHING
S OLENOID
KNOCK
S ENS ORS (4) INTAKE RUNNER
CONTROL

Technical Training
NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine 04/14/2009
3-5
Engine Management System

Overview

SC Component Location: Front of Engine
NP10V8091
THROTTLE BODY
MANIFOLD ABS
OLUTE PRESSURE S ENSOR
ENGINE
ENGINECONTROL MODULECONTROL MODULEENGINE
CONTROL MODULE
FUEL INJECTOR
IGNITION COIL
MASS AIR FLOW SENS OR
CAMS HAFT POS ITION
S ENS ORS
VARIABLE CAMS HAFT TIMING
S OLENOIDS
OIL LEVEL / TEMPERATURESENS OR CAMS
HAFT POS ITION
S ENS ORS
VARIABLE CAMSHAFT TIMING
S OLENOIDS MASS AIR FLOW
SENS OR

3-6
04/14/2009 NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine
Technical Training
Overview

Engine Management System

SC Component Location: Rear of Engine
NP10V8092
FUEL RAIL
PRESSURE S ENSOR
ENGINE
COOLANT TEMP. SENS OR
UPSTREAM
UHEGO
DOWNS TREAM
HO2S (2)
CRANKS
HAFT
POS ITION S ENSOR
UPS
TREAM
UHEGO
ENGINE
CONTROL MODULE KNOCK
S ENS ORS (4) TEMPERATURE AND
MANIFOLD ABS OLUTE PRESSURE S ENSOR

Technical Training
NP10-V8JLR: AJ133 5.0-Liter DFI V8 Engine 04/14/2009
3-7
Engine Management System

Overview

WARNINGS:
• Direct injection injectors require high booster voltages (65V); special care must be
taken to guarantee proper electrical isola-
tion of the cable harness and all connectors.
The ECM outputs for the injectors are pro-
tected in case of open and short circuit.
• Due to the high currents in the injectors, strong magnetic fields are created. An influ-
ence within a distance of up to 0.2m from
the wiring harness or control unit is to be
expected. Each vehicle type must therefore
be checked to ensure that this distance is
maintained. In particular, the interference-
free function of pacemakers cannot be
guaranteed.
CAUTIONS:
• DO NOT connect test probes connected to battery positive supply to any ground pins,
as this will DESTROY the ECM.
• Use care when probing connectors for wir- ing checks. The gold plating used on low
current signal connector terminals is easy
to damage by inserting a probe.
• Do not use probes that pierce wiring insula- tion since they damage/sever wiring, leav-
ing it vulnerable to corrosion.