Range Rover. Manual — part 83
19 - FUEL SYSTEM
CONTENTS
Page
LAND ROVER V8
DESCRIPTION AND OPERATION
ENGINE MANAGEMENT SYSTEM - up to 99MY
1
. . . . . . . . . . . .
ENGINE MANAGEMENT SYSTEM COMPONENT LOCATION - up to
99MY
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE MANAGEMENT SYSTEM SCHEMATIC - up to 99MY
4
. . . . . . .
ENGINE MANAGEMENT SYSTEM - from 99MY
7
. . . . . . . . . . . .
ENGINE MANAGEMENT SYSTEM COMPONENT LOCATION - from
99MY
8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE MANAGEMENT SYSTEM COMPONENT LOCATION - from
99MY (Continued)
10
. . . . . . . . . . . . . . . . . . . . . . . ..
ENGINE MANAGEMENT SYSTEM SCHEMATIC - from 99MY
12
. . . . . .
COMPONENT DESCRIPTIONS - up to 99MY
14
. . . . . . . . . . . . ...
COMPONENT DESCRIPTIONS - from 99MY
31
. . . . . . . . . . . . ...
ADJUSTMENT
FUEL TANK - DRAIN
1
. . . . . . . . . . . . . . . . . . . . . . ...
THROTTLE CABLE - up to 99MY
2
. . . . . . . . . . . . . . . . . .
THROTTLE CABLE - from 99MY
2
. . . . . . . . . . . . . . . . . . .
ENGINE TUNING - up to 99MY
3
. . . . . . . . . . . . . . . . . . ...
REPAIR
AIR CLEANER ASSEMBLY - up to 97MY
1
. . . . . . . . . . . . . . .
AIR CLEANER ASSEMBLY - from 97MY
2
. . . . . . . . . . . . . . .
ELEMENT - AIR CLEANER - from 99MY
3
. . . . . . . . . . . . . . . .
AIR INTAKE HOSE - up to 99MY
3
. . . . . . . . . . . . . . . . . . .
CAMSHAFT POSITION (CMP) SENSOR - up to 99MY
4
. . . . . . . . . ..
CAMSHAFT POSITION (CMP) SENSOR - from 99MY
5
. . . . . . . . . ...
ENGINE COOLANT TEMPERATURE (ECT) SENSOR - up to 99MY
5
. . . . .
ENGINE COOLANT TEMPERATURE (ECT) SENSOR - from 99MY
6
. . . . ..
CRANKSHAFT POSITION (CKP) SENSOR - up to 97MY
7
. . . . . . . . ..
CRANKSHAFT POSITION (CKP) SENSOR - 97MY to 99MY
8
. . . . . . . .
CRANKSHAFT POSITION (CKP) SENSOR - from 99MY
9
. . . . . . . . ...
FUEL SYSTEM - DEPRESSURISE
10
. . . . . . . . . . . . . . . . ...
ENGINE CONTROL MODULE (ECM) - up to 99MY
10
. . . . . . . . . . ..
ENGINE CONTROL MODULE (ECM) - from 99MY
11
. . . . . . . . . . ...
FAN - ECM COOLING - from 99MY
12
. . . . . . . . . . . . . . . . ...
MASS AIR FLOW (MAF) SENSOR - up to 99MY
13
. . . . . . . . . . . ..
MASS AIR FLOW (MAF) SENSOR - from 99MY
13
. . . . . . . . . . . ...
FUEL RAIL AND INJECTORS - up to 99MY
14
. . . . . . . . . . . . . ..
FUEL RAIL AND INJECTORS - from 99MY
16
. . . . . . . . . . . . . ...
19 - FUEL SYSTEM
CONTENTS
Page
ENGINE FUEL TEMPERATURE (EFT) SENSOR
18
. . . . . . . . . . . .
HEATED OXYGEN SENSOR (HO2S) - FRONT (up to 99MY) AND REAR
18
. ..
HEATED OXYGEN SENSOR (HO2S) - FRONT - from 99MY
19
. . . . . . ...
SPARK PLUGS
20
. . . . . . . . . . . . . . . . . . . . . . . . ..
H.T. LEADS
21
. . . . . . . . . . . . . . . . . . . . . . . . . ...
IGNITION COILS - up to 99MY
22
. . . . . . . . . . . . . . . . . . ..
IGNITION COILS - from 99MY
23
. . . . . . . . . . . . . . . . . . ...
INERTIA FUEL SHUT OFF (IFS) SWITCH
24
. . . . . . . . . . . . . .
INTAKE AIR TEMPERATURE (IAT) SENSOR
25
. . . . . . . . . . . . ..
THROTTLE POSITION (TP) SENSOR - up to 99MY
26
. . . . . . . . . .
THROTTLE POSITION (TP) SENSOR - from 99MY
26
. . . . . . . . . . .
KNOCK SENSOR (KS) - up to 99MY
27
. . . . . . . . . . . . . . . .
KNOCK SENSOR (KS) - from 99MY
28
. . . . . . . . . . . . . . . . .
FUEL PRESSURE REGULATOR
28
. . . . . . . . . . . . . . . . . ..
IDLE AIR CONTROL (IAC) VALVE - up to 99MY
30
. . . . . . . . . . . ..
IDLE AIR CONTROL (IAC) VALVE - from 99MY
30
. . . . . . . . . . . ...
PLENUM CHAMBER - up to 97MY
31
. . . . . . . . . . . . . . . . .
PLENUM CHAMBER - 97MY to 99MY
33
. . . . . . . . . . . . . . . ..
PLENUM CHAMBER - from 99MY
35
. . . . . . . . . . . . . . . . .
FUEL FILTER
36
. . . . . . . . . . . . . . . . . . . . . . . . .
THROTTLE CABLE - up to 99MY
37
. . . . . . . . . . . . . . . . . ..
THROTTLE CABLE - from 99MY
38
. . . . . . . . . . . . . . . . . ...
FILLER NECK ASSEMBLY - PRE-ADVANCED EVAPS
40
. . . . . . . . ...
FUEL FILLER NECK - ADVANCED EVAPS
41
. . . . . . . . . . . . . ..
ANTI-TRICKLE FILL VALVE - ADVANCED EVAPS
42
. . . . . . . . . . ..
FUEL TANK, PUMP AND GAUGE SENDER UNIT - PRE-ADVANCED
EVAPS
43
. . . . . . . . . . . . . . . . . . . . . . . . . . . ...
FUEL TANK, PUMP AND GAUGE SENDER UNIT - ADVANCED EVAPS
46
. ...
FUEL TANK FILLER CAP - ADVANCED EVAPS
48
. . . . . . . . . . . ..
THROTTLE BODY - from 99MY
49
. . . . . . . . . . . . . . . . . .
LAND ROVER V8
1
DESCRIPTION AND OPERATION
ENGINE MANAGEMENT SYSTEM - up to 99MY
Description
The V8 engine for models prior to 99MY is controlled
by a Sagem GEMS engine management system. The
ECM uses sensors to determine ambient conditions
and operating data and uses this data and the
information stored in an internal memory map to
control the electronic ignition and fuel injection. The
system features idle speed control, fault monitoring,
security immobilisation and engine load management
functions. GEMS can be interrogated via the
diagnostic socket to access fault codes and other
diagnostic information using Testbook.
The engine management system (EMS) maintains
optimum engine performance over the entire
operating range. The correct amount of fuel is
metered into each cylinder inlet tract and the ignition
timing is adjusted at each spark plug.
The system is controlled by the engine control module
(ECM) which receives data from sensors located on
and around the engine. From this information it
provides the correct fuel requirements and ignition
timing at all engine loads and speeds.
The fuel injection system uses a hot wire mass air
flow (MAF) sensor to calculate the quantity of air
flowing into the engine.
The ignition system does not use a distributor. It is a
direct ignition system (DIS), using four double ended
coils. The circuit to each coil is completed by
switching inside the ECM.
The on-board diagnostic system detects any faults
which may occur within the EMS. Fault diagnosis
includes failure of any EMS sensors and actuators,
emissions related items, fuel supply and exhaust
systems.
The system incorporates certain default strategies to
enable the vehicle to be driven in case of sensor
failure. This may mean that a fault is not detected by
the driver. The fault is indicated by illumination of the
malfunction indicator light (MIL) on North American
specification vehicles.
A further feature of the system is ’robust
immobilisation’, fitted to European specification
vehicles. Upon arming the alarm, the EMS ECM
disables the injectors and the Body electrical Control
Module (BeCM) inhibits the crank relay (the vehicle
cannot be started until the alarm is disarmed).
CAUTION: System sensor connectors can
be contaminated by oil or coolant when
disconnected during repair or testing. Use
a suitable cap to prevent dirt or fluid ingress.
19
FUEL SYSTEM
NEW RANGE ROVER
2
DESCRIPTION AND OPERATION
ENGINE MANAGEMENT SYSTEM COMPONENT
LOCATION - up to 99MY
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