coolant temperature FORD KUGA 2011 1.G Workshop Manual

Road/Roller Testing
Road or roller testing may be carried out for various
reasons and a procedure detailing pre-test checks,
engine starting and stopping, pre-driving checks,
on-test checks and final checks to be completed
on completion of the test is given below.
Unless complete vehicle performance is being
checked, the full road test procedure need not be
carried out. Instead, those items particularly
relevant to the system(s) being checked can be
extracted.
Pre-Test Checks
WARNING: If the brake system hydraulic
fluid level is low, pedal travel is excessive
or a hydraulic leak is found, do not attempt
to road test the vehicle until the reason for
the low fluid level, excessive pedal travel
or hydraulic leak is found and rectified.
It is suggested that pre-test checks and functional
tests of those systems and circuits which affect the
safe and legal operations of the vehicle, such as
brakes, lights and steering, should always be
carried out before the road or roller test.
With the ignition switched off, check:
– the engine oil level.
– the engine coolant level.
– the tires, for correct pressure, compatible types and tread patterns, and wear within limits.
– that there is sufficient fuel in the tank to complete the test.
– all around the engine, transmission and under the vehicle for oil, coolant, hydraulic and fuel
leaks. Make a note of any apparent leaks and
wipe off the surrounding areas to make it easier
to identify the extent of the leak on completion
of the test.
Starting the Engine
NOTE: On initial drive away from cold and within
the first 1.5 km (1 mile), do not depress the
accelerator pedal beyond half travel until the
vehicle has attained a minimum speed of 25 km/h
(15 miles/h). Never operate at high engine speed
or with the accelerator pedal at full travel whilst the
engine is cold.
With the ignition switched off, check: – that the parking brake is applied.
– that the gear lever is in the neutral position.
– that all instrument gauges (except fuel gauge)
read zero.
With the ignition switched on, check:
– that the ignition controlled warning lamps are illuminated.
– that the engine temperature gauge registers a reading compatible with the engine temperature.
– that the fuel gauge registers a reading appropriate to the fuel level in the tank.
– the operation of the parking brake warning lamp and fluid level warning indicator.
Road or Roller Testing
CAUTION: If road testing, check the brake
operation while still traveling at low speed
before continuing with the test. If the
brakes pull to one side, or appear to be
otherwise faulty, do not continue with the
road test until the fault has been found and
rectified.
During the road or roller test, check:
– that the clutch pedal operation is not stiff or heavy.
– that the initial gear engagement is smooth and there is no evidence of clutch drag.
– that the parking brake control operates smoothly and releases quickly and completely.
– that the clutch takes up the drive smoothly, without slip or judder.
– that gear changing is smooth with no abnormal noises or vibrations from the transmission.
– the engine power output is satisfactory, full power is achieved, acceleration is smooth and
pedal operation is not stiff or heavy, and engine
speed returns to idle correctly.
– there is no excessive or abnormally colored smoke from the engine under normal driving,
heavy load or overrun conditions.
– that steering operation, including power steering (if equipped), is smooth, accurate, not
excessively heavy or with excessive free play
or vibration.
– that the steering does not pull to one side and self centers smoothly after cornering.
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– that the speedometer, coolant temperaturegauge and tachometer (if equipped) register the
correct readings and operate correctly.
– that the switches and controls operate smoothly and positively, warning and indicator lamps
operate correctly and the direction indicator
control self cancels when the steering is
returned to the straight ahead position.
– that the heating and ventilation systems operate correctly and effectively.
– the brake operation and efficiency.
Brake Testing
WARNING: When brake testing, avoid
breathing the fumes from hot brakes, this
may contain asbestos dust which is
hazardous to health. Failure to follow this
instruction may result in personal injury.
For additional information, refer to: Health
and Safety Precautions (100-00 General
Information, Description and Operation).
CAUTIONS:
Avoid brake testing on busy roads where
it may cause inconvenience or danger to
other road users.
Brake testing which includes heavy brake
applications should not be carried out with
new brake pads/discs or linings/drums
until the components have bedded-in. New
brake friction components will not reach
full efficiency until the bedding-in process
is complete.
Test the brakes at several speeds within the normal
operating range using both light and heavy pedal
pressure. Note any tendency to snatch, pull or
drag, and any undue delay in application or
release.
Allow the vehicle to coast and note any tendency
to pull to one side, or evidence that the brakes are
binding.
After stopping the vehicle (not immediately after a
period of heavy braking), carefully check the brake
temperature. A brake disc or brake drum that feels
hot or is appreciably hotter than the others,
indicates that the brake is binding.
After completion of the test, check for: – oil, coolant, hydraulic, air and fuel leaks.
– abnormal temperature of any moving
components or assemblies, for example wheel
hubs, transmission and axle, which might
indicate over tightness or lack of lubrication.
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Auxiliary Climate Control – Overview
Initial start-up of the fuel-fired booster
heater
The fuel-fired booster heater needs to be filled
before being taken into operation for the first time.
Activation of the fuel pump for the fuel-fired booster
heater is controlled by the Ford diagnostic unit.
Lockout
Flame sensor
If the flame goes out independently during
operation of the booster heater, a restart is carried
out. If the booster heater does not ignite within 90
seconds of fuel delivery or if the flame goes out
within 15 minutes of starting, a lockout will be
implemented by the flame sensor.
Lockout can be cancelled by switching the booster
heater off then on again, although this may only
be repeated at most 2 times.
Overheating sensor
In the event of overheating (water shortage, poorly
ventilated coolant circuit), the fuel supply to the
booster heater is interrupted and a lockout occurs.
After the cause of the overheating has been
eliminated, the booster heater can be started again
by switching it off and on, if the coolant temperature
is below 70°C. If the booster heater overheats ten
times in a row, the control unit will be locked.
Unlocking the control unit
Delete the fault memory of the fuel-fired booster
heater after eliminating the cause of the fault using
the Ford diagnostic unit.
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Description
Item
Electric Booster HeaterRefer to Component Description: (page
?)
1
GEM (generic electronic module)
2
Outside temperature sensor
3
Climate control system control assembly
4 Description
Item
Generator and Alternator
5
PCM (powertrain control module)
6
Coolant temperature sensor (ECT (engine
coolant temperature) sensor)Refer to Component Description: ECT
(page ?)
7
instrument cluster
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Description
Item
Electric Booster HeaterRefer to Component Description: (page
?)
1
GEM2
Outside temperature sensor
3
Climate control system control assembly
4 Description
Item
Generator and Alternator
5
PCM6
Coolant temperature sensor (ECT sensor)Refer to Component Description: ECT
(page ?)
7
instrument cluster
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System Operation
Electric Booster Heater
In diesel vehicles which give off little residual heat,
a booster heater is used to heat the passenger
compartment rapidly in the case of low ambient
temperatures.
If the interior temperature has been set to HI, or if
the heater controls have been switched to the
highest setting, the two-zone air conditioning
system sends an "electric booster heater ON"
request signal to the CAN (controller area network)
via the medium speed GEM bus. If a manual air
conditioning system is installed, the signal is
transmitted via a conventional cable connection.
The GEM switches on the electric booster heater
depending on the following parameters:
• Engine coolant temperature is below 60 °C.
• Ambient air temperature is below 10 °C.
• Sufficient generator capacity is available.
The electric booster heater electronics activate
three output stages as a function of a pulse width
modulated signal PWM (pulse width modulation)
generated by the GEM. The output stages switch
the three heating elements of the electric booster
heater ON or OFF individually, whereby the heating
periods of the individual elements can overlap. Due
to the variable switch-on duration, continuously
variable temperature control is possible. The overall
heating power of the three heating elements is
linearly proportional to the PWM signal. If the PWM
signal is below 10% or above 95%, the electric
booster heater is not activated.
The electric booster heater is switched off when
an engine coolant temperature of 70°C or an
ambient air temperature of 20°C is exceeded.
Fuel-fired heater - function diagram G1066982en
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Description
Item
Glow plug
1
Combustion Air Blower
2
Fuel pump
3
Fuel-fired heater on
4
Fuel-fired heater - large regulating step
5
Fuel-fired heater - small regulating step
6 Description
Item
Fuel-fired heater off
7
Blower motor on
8
Flame detection
9
Blower motor off
10
Large regulating step
11
Small regulating step
12
Boost heat mode
When the engine is running, the booster heater
helps the engine to heat the passenger
compartment at low ambient temperatures.
When the coolant temperature reaches 30 °C, the
control unit transmits a switch-on signal for the
passenger compartment blower via the CAN bus.
When the coolant temperature drops, the blower
remains on until the temperature reaches 20 °C
whereupon it is deactivated.
The fuel tank must be filled to at least 14% for the
system to be switched on. If the fuel level drops
below 8% then the system is switched off.
In boost mode, the fuel fired booster heater is only
switched on if all of the following criteria are met:
• Engine speed above 500 rpm. The fuel fired booster heater is not allowed to start up while
the engine is being cranked; this prevents a
shut-down due to low voltage if the battery
charge is low.
• Ambient temperature below 5 °C.
• Fuel level above 14% of total capacity.
• Function is active on the trip computer menu.
One of the following conditions is sufficient to
switch off the booster heater in boost heat mode:
• Engine speed below 500 rpm.
• Ambient temperature above 11 °C.
• Function is active on the trip computer menu.
• Fuel level below 8% of total capacity.
Programmable fuel fired booster heater
The programmable fuel fired booster heater has
two operating modes:
• Instant start
• Programmed start
The heater status is displayed on the instrument
cluster display. The parking heater mode is controlled via a menu in the message centre. The
fuel fired booster heater can be activated and
deactivated via the message centre. (If set to 'Auto'
the system is activated, if set to 'Off' the system is
completely deactivated)
Immediate start-up of the booster
heater
This function enables the fuel-fired booster heater
to be switched on manually when the engine is not
running. This function is activated via the menu on
the driver information system.
The ignition key must be in the II" position before
this menu can be accessed. The timer function of
the booster heater remains active when the ignition
key is in position "0".
After an immediate start-up of the booster heater
it is switched off again after 30 minutes (or if the
fuel level in the fuel tank drops below 8%). The
booster heater stops within 2 minutes of the engine
starting. This leaves enough time to check whether
the switch-on conditions for boost heat mode have
been met, thus preventing the booster heater from
having to switch off and switch back on again. The
heater can be switched off manually at any time
from the menu.
Programmed start-up of the booster
heater
The driver can use a menu to adjust the time at
which the vehicle is to be pre-heated. The following
options are available:
• Time setting. One or two times can be
programmed for each day of the week. It is
possible to program days either individually or
together in groups (Mon-Sun/Mon-Sat/Mon-Fri).
• Time and data setting
With the first option, the fuel-fired booster heater
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reprogrammed. However, if the engine hasn't been
run since the last programmed start, the fuel-fired
booster heater will not start up the second time so
as to prevent the battery from being discharged.
The length of time required to pre-heat the vehicle
is calculated in the control unit of the fuel-fired
booster heater and is based on two temperature
values:
• Ambient air temperature: this message is taken
from the GEM via the CAN bus.
• Coolant temperature: this is determined via an internal sensor in the fuel-fired booster heater.
The maximum heating time is 30 minutes at an
outside air temperature of -10 °C or lower. The
heating time decreases proportionally with
increasing ambient temperature until the ambient
temperature is between +15 °C and +20 °C. Then
the minimum heating time is 10 minutes. The
parking heater is deactivated at temperatures
above +20 °C.
The sequence for a programmed start of the
booster heater is as follows:
• Two minutes before the start of the maximum heating time the driver information
system/instrument cluster sends an activation
message to the fuel-fired booster heater via the
CAN bus.
• The fuel-fired booster heater calculates the required heating time and, if necessary, sends
a delay request on the CAN bus.
• At the calculated time, the fuel-fired booster heater starts up. The conditions for start-up are:
engine not running and amount of fuel in the
fuel tank is above 14% of maximum.
• When the coolant temperature reaches +30 °C, the control unit of the fuel-fired booster heater
sends a request to switch on the passenger
compartment blower.
• Eight minutes after the programmed switch-off time, the booster heater stops heating mode
and starts a run-on operation to clean the
system's spark plugs.
• Ten minutes after the switch-off time, the post-cleaning operation is complete. The
additional ten minutes run-on time provides
some leeway in case the driver is late arriving.
After a programmed start-up of the booster heater
it is switched off again after the heating time has
elapsed (or if the fuel level in the fuel tank drops
below 8%). The booster heater stops within 2 minutes of the engine starting. This leaves enough
time to check whether the switch-on conditions for
boost heat mode have been met, thus preventing
the booster heater from having to switch off and
switch back on again. The heater can be switched
off manually at any time from the menu.
Whilst the fuel-fired booster heater is in additional
heating mode and/or parking heating mode, the
instrument cluster receives a fuel consumption
signal; this is used to re-calculate the vehicle's
remaining range and fuel consumption data.
Emergency shutoff
In the event of an accident in which the airbags
are deployed, the control unit of the fuel-fired
booster heater receives a message on the CAN
bus from the restraints control module (RCM).
When this message is received, the booster heater
system switches off immediately.
The booster heater control module deactivates the
system and does not respond to further messages
on the CAN bus. The booster heater control module
needs to be activated with WDS.
Component Description
Electric Booster Heater
The electric booster heater consists of three
individual heating elements, which are incorporated
into a single housing. It is controlled by the generic
electronic module (GEM), taking into account the
following factors:
Detailed illustration of fuel-fired heater
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Description
Item
Combustion chamber
16
'O' Ring
17 Description
Item
Combustion blower motor cover
18
Glow plug wiring harness
19
Flame sensor
If the flame goes out independently during
operation of the booster heater, a restart is carried
out. If the booster heater does not ignite within 90
seconds of fuel delivery or if the flame goes out
within 15 minutes of starting, a lockout will be
implemented by the flame sensor.
Lockout can be cancelled by switching the booster
heater off then on again, although this may only
be repeated at most 2 times.
Overheat Sensor
The overheating sensor enables the fuel-fired
booster heater module to determine the coolant
temperature, protecting the heater from
overheating. The overheating sensor is installed
next to the coolant temperature sensor under a
cover on the top of the fuel-fired heater.
In the event of overheating (lack of water, poorly
ventilated coolant circuit), the fuel supply to the
heater is interrupted and a lockout occurs. After
the cause of the overheating has been eliminated,
the heater can be restarted by switching it off and
on again, if the coolant temperature is below 70°C.
If the heater overheats ten times in a row, the
control unit is locked.
ECT
The fuel-fired booster heater module uses the
temperature sensor to determine the coolant
temperature, which it then uses to set the starting
and stopping time. The coolant temperature sensor
is installed next to the overheating sensor under a
cover on the top of the fuel-fired heater. Water pump The coolant pump is located on the holder for the
fuel-fired heater on the bulkhead in the rear of the
engine compartment. The coolant pump is driven
by a built-in electric motor and circulates the
coolant in the engine cooling system. The delivery
rate for the pump is 820l/h at a delivery pressure
of 0.1 bar.
Fuel pump
The fuel required for the fuel-fired heater is taken
from the fuel system by a fuel pump fitted in the
fuel tank and is delivered to the heater via a fuel
line.
The fuel pump is an electric piston pump which
meters the corresponding fuel volume for the
fuel-fired heater according to a cycle set by the
fuel-fired heater module.
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Instrument Cluster and Panel Illumination
Refer to
Wiring Diagrams Section 413-00, for
schematic and connector information.
Principles of Operation
NOTE: A new instrument cluster must be
configured.
The instrument cluster and panel illumination
consists of dimmable and non-dimmable
illumination. The dimmable panel illumination is
controlled by the panel illumination switch (part of
the headlamp switch), which allows the brightness
level of the backlights to be adjusted dependent
on the customer preference. When the headlamp
switch is in the parking lamps ON or headlamps
ON position, the intensity of the backlighting can
be adjusted using the panel dimmer switch. The
non dimmable illumination allows for full intensity
dependant on the ignition switch position.
Instrument Cluster and Dimmable
Backlighting A.
Tachometer
B. Engine coolant temperature gauge
C. Fuel gauge
D. Speedometer
E. Information display
The dimmable illumination utilizes light emitting
diodes (LEDs) and bulb(s). The following dimmable
components are backlight using LEDs only:
• ashtray
• cigar lighter
• transmission control lever
• heater control panel
• audio unit • navigation system display module
• instrument cluster
• climate control module
• hazard switch
• traction control system disable switch
• right-hand and left-hand heated front seat
switch(es)
Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Visual Inspection Chart Electrical
Mechanical
– Fuse(s)
– Loose or corrodedconnector(s)
– Instrument cluster
– Wiring Harness
– Circuit
– LED(s)
– Bulb(s)
– Engine/engine
compartment or
underbody compon-
ents
– Fluid levels
– Accessory installa- tion
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible)
before proceeding to the next step.
4. If the cause is not visually evident, verify the symptom and refer to the diagnostic tab within
the Ford approved diagnostic tool. G1054961en
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