Land Rover Lesson 2 Auto Trans Coolingine Rover Manual

Cooling System Coolant Flow – Automatic Gearbox Without FBH
Engine CoolingLesson 2 – Powertrain
137Technical Training (G421101) 

Cooling System Coolant Flow – Automatic Gearbox With FBH
When the engine is running the coolant pump is driven
by the ancillary drive belt. This forces coolant to
circulate around the engine and heater, while the
thermostat and bypass valve are shut. As the temperature
and pressure increases the bypass valve is forced open
allowing coolant to circulate through the bypass valve.
When the temperature reaches 82°C (180°F) the main
thermostat begins to open, allowing coolant to circulate
through the main...

tank has an outlet hose which is connected into the
coolant circuit. This outlet hose returns the coolant to
the system when the engine cools.
Coolant flows through the radiator from the top right
hand tank to the bottom left hand tank and is cooled by
air passing through the matrix. The temperature of the
cooling system is monitored by the ECM via the Engine
Coolant temperature (ECT) sensor located in the
cylinder head. The ECM uses signals from this sensor
to control the cooling fan operation and...

Exhaust Gas Recirculation Component Location
Fuel rail damper1
Vacuum control hoses2
Exhaust manifold to Exhaust Gas Recirculation
(EGR) hose
3
Exhaust manifold4
ESM valve5
Engine emissions on the V6 petrol engine are controlled
by the Engine Control Module (ECM). The engine
emission control system comprises:
•EGR system
•Crankcase emission system
(G421133) Technical Training166
Lesson 2 – PowertrainEngine Emission Control 

EGR SYSTEM
ESM Valve
The EGR System Module (ESM) valve is located on
the intake manifold with a pipe connecting the exhaust
manifold to the valve. Connection between the sensor
and the harness is via a six-way connector. The ESM
valve is electrically controlled by a Pulse Width
Modulated (PWM) signal. The ESM valve allows
burned exhaust gas to be recirculated back into the
engine. Since exhaust gas has much less oxygen than
air, it is basically inert. The exhaust gas takes the place
of air in the...

CRANKCASE VENTILATION SYSTEM
Crankcase Ventilation System Component Location
Crankcase Ventilation ( CCV ) Hose and cam
lock connector
1
Engine to evaporative emissions control tube2
Evaporative emissions control valve3
Crankcase Ventilation (CCV) hose4
Positive Crankcase Ventilation(PCV) hose and
PCV valve
5
PCV jump lead with integral thermistor6
(G421133) Technical Training168
Lesson 2 – PowertrainEngine Emission Control 

Positive Crankcase Ventilation (PCV) Valve
The crankcase ventilation system comprises:
•Positive Crankcase Ventilation (PCV) valve
•Positive Crankcase Ventilation (PCV) hose
•Crankcase Ventilation (CCV) hose
The PCV is an electrically heated control valve that
allows the gas from left hand cylinder head to flow into
the air intake. The PCV valve is electrically heated to
allow it to remain operational in cold climates. The PCV
heater power is fed from the fuel pump relay, therefore
heating is always...

EXHAUST GAS RECIRCULATION (EGR)
EGR and Crankcase Ventilation Component Location
Full load tube1
Pressure Control Valve (PCV)2
Part load tube3
EGR tube4
EGR valve5
Electric throttle6
(G421134) Technical Training170
Lesson 2 – PowertrainEngine Emission Control 

The EGR system is controlled by a PWM signal from
the ECM. The system comprises an EGR valve and a
gas transfer pipe.
The EGR valve comprises a 4 pole stepper motor with
an integral cooler unit which is mounted on the side of
the induction elbow. The EGR valve is cooled by the
return coolant flow from the electric throttle.
The EGR valve is connected to the LH exhaust manifold
via the gas transfer pipe.
CRANKCASE VENTILATION
The V8 engine is ventilated through a part load and a
full load breather.
The...

EGR modulator/ cooler assembly1
Electric throttle2
EGR to electric throttle tube3
EGR cooler4
EGR modulator valve5
EGR modulator solenoid valve6
EGR coolant hoses7
EGR SYSTEM
The EGR system comprises:
•EGR modulator x 2
•EGR cooler x 2
•Associated connecting pipes
(G421135) Technical Training172
Lesson 2 – PowertrainEngine Emission Control