Throttle JAGUAR XFR 2010 1.G Repair Manual
[x] Cancel search | Manufacturer: JAGUAR, Model Year: 2010, Model line: XFR, Model: JAGUAR XFR 2010 1.GPages: 3039, PDF Size: 58.49 MB
Page 1632 of 3039
DTC Description Possible Cause Action P012200 Throttle/Pedal
Position Sensor A
Circuit Low
TP sensor sensing
circuit TP 1 - short
to ground, high
resistance
TP sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check TP sensor sensing circuit TP 1 for short
to ground, high resistance. Check and install a new throttle body as
required P012300 Throttle/Pedal
Position Sensor A
Circuit High
TP sensor sensing
circuit TP1 - short
to power
TP sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check TP sensor sensing circuit TP 1 for short
to power. Check and install a new throttle body as required P022200 Throttle/Pedal
Position Sensor/Switch
B Circuit Low
TP sensor sensing
circuit TP 2 - short
to ground, high
resistance
TP sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check TP sensor sensing circuit TP 2 for short
to ground, high resistance. Check and install a new throttle body as
required P022300 Throttle/Pedal
Position Sensor/Switch
B Circuit High
TP sensor sensing
circuit TP 2- short
to power
TP sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check TP sensor sensing circuit TP 2 for short
to power. Check and install a new throttle body as required P022700 Throttle/Pedal
Position Sensor/Switch
C Circuit Low
APP sensor circuit
APP 1 - short to
ground, high
resistance Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuit APP 1 for short to
ground, high resistance P022800 Throttle/Pedal
Position Sensor/Switch
C Circuit High
APP sensor circuit
APP 1 - short to
power Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuit APP 1 for short to
power P210129 Throttle Actuator
Control Motor Circuit
Range/Performance
Signal invalid
Jammed throttle
blade, gearing or
motor Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and test throttle actuator control motor circuit for
short to ground, power, high resistance. Suspect the throttle body,
check and install a new throttle body as required, refer to the new module/component installation note at the top of the DTC Index P210162 Throttle Actuator
Control Motor Circuit
Range/Performance
Signal compare
failure
Jammed throttle
blade, gearing or
motor Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and test throttle actuator control motor circuit for
short to ground, power, high resistance. Suspect the throttle body,
check and install a new throttle body as required, refer to the new
module/component installation note at the top of the DTC Index P210164 Throttle Actuator
Control Motor Circuit
Range/Performance
Signal plausibility
failure
Jammed throttle
blade, gearing or
motor Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and test throttle actuator control motor circuit for
short to ground, power, high resistance. Suspect the throttle body,
check and install a new throttle body as required, refer to the new
module/component installation note at the top of the DTC Index P210177 Throttle Actuator
Control Motor Circuit
Range/Performance
Commanded
position not
achievable
Throttle blade
stuck open
Intake air system
leak Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and test throttle actuator control motor circuit for
short to ground, power, high resistance. Suspect the throttle body,
check and install a new throttle body as required, refer to the new
module/component installation note at the top of the DTC Index P210329 Throttle Actuator
Control Motor Circuit
High
Signal invalid
Throttle motor
control circuit -
short to power
ECM fault Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check throttle motor control circuit for short to
power. If ECM is suspect, check and install a new module as
required, refer to new module/component installation note at top of
DTC Index P210364 Throttle Actuator
Control Motor Circuit
High
Signal plausibility
failure
Throttle motor
control circuit -
short to power Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check throttle motor control circuit for short to
power. If ECM is suspect, check and install a new module as
required, refer to new module/component installation note at top of
DTC Index
Page 1633 of 3039
DTC Description Possible Cause Action ECM fault
P210500 Throttle Actuator
Control System -
Forced Engine
Shutdown
Throttle MIL
request due to fuel
cut Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system P211800 Throttle Actuator
Control Motor Current
Range/Performance
Throttle motor
control circuit -
short to ground,
power, high
resistance Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check throttle motor control circuit for short to
ground, power, high resistance P211900 Throttle Actuator
Control Throttle Body
Range/Performance
Throttle spring
faulty Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Suspect throttle body
faulty. Check and install a new throttle body as required, refer to
the new module/component installation note at top of DTC Index P212200 Throttle/Pedal
Position Sensor/Switch
D Circuit Low
APP sensor circuit 2
- low input Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuit 2 for short to ground, open circuit P212216 Throttle/Pedal
Position Sensor/Switch
D Circuit Low Input
Accelerator pedal
position (APP)
sensor circuit 1 -
short to ground,
power
Accelerator pedal
position (APP)
sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to electrical circuit
diagrams and check accelerator pedal position (APP) sensor circuit 1
for short to ground, power. Set ignition status to 'ON' engine 'OFF'
check and record 'Pedal value sensor 1' datalogger signal. With
pedal in idle position, value of signal should be approximately 0%,
if not suspect the pedal position sensor, check and install a new
sensor as required P212300 Throttle/Pedal
Position Sensor/Switch
D Circuit High
APP sensor circuit 2
- high input Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuit 2 for short to power P212317 Throttle/Pedal
Position Sensor/Switch
D Circuit High Input
Accelerator pedal
position (APP)
sensor circuit 1 -
short to power
Accelerator pedal
position (APP)
sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to electrical circuit
diagrams and check accelerator pedal position (APP) sensor circuit 1
for short to ground, power. Set ignition status to 'ON' engine 'OFF'
check and record 'Pedal value sensor 1' datalogger signal. With
pedal in fully depressed position, value of signal should be
approximately 99%, if not suspect the pedal position sensor, check
and install a new sensor as required P212716 Throttle/Pedal
Position Sensor/Switch
E Circuit Low Input
Accelerator pedal
position (APP)
sensor circuit 2 -
short to ground,
high resistance
Accelerator pedal
position (APP)
sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to electrical circuit
diagrams and check accelerator pedal position (APP) sensor circuit 2
for short to ground, power. Set ignition status to 'ON' engine 'OFF'
check and record 'Pedal value sensor 2' datalogger signal. With
pedal in idle position, value of signal should be approximately 0%,
if not suspect the pedal position sensor, check and install a new
sensor as required P212817 Throttle/Pedal
Position Sensor/Switch
E Circuit High Input
Accelerator pedal
position (APP)
sensor circuit 2 -
short to power
Accelerator pedal
position (APP)
sensor failure Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to electrical circuit
diagrams and check accelerator pedal position (APP) sensor circuit 2
for short to ground, power. Set ignition status to 'ON' engine 'OFF'
check and record 'Pedal value sensor 2' datalogger signal. With
pedal in fully depressed position, value of signal should be
approximately 99%, if not suspect the pedal position sensor, check
and install a new sensor as required P213528 Throttle/Pedal
Position Sensor/Switch
A/B Voltage
Correlation
APP sensor circuit 1
and 2 range
performance -
sub-processor Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuits 1 and 2 for short to
ground, power and high resistance. Clear the DTCs and retest. If
the code remains, replace the APP sensor P213529 Throttle/Pedal
Position Sensor/Switch
A/B Voltage
Correlation
APP sensor -
excessive difference
between
raw values of circuit
1 and 2 -
sub-processor Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuits 1 and 2 for short,
open circuit
Page 1634 of 3039
DTC Description Possible Cause Action P213562 Throttle/Pedal
Position Sensor/Switch
A/B Voltage
Correlation
APP sensor circuit 1
and 2 range
performance -
sub-processor Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuits 1 and 2 for short to
ground, power and high resistance. Clear the DTCs and retest. If
the code remains, replace the APP sensor P213564 Throttle/Pedal
Position Sensor/Switch
A/B Voltage
Correlation
APP sensor circuit 1
and 2 range
performance Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check APP sensor circuits 1 and 2 for short,
open circuit P213862 Throttle/Pedal
Position Sensor/Switch
D/E Voltage
Correlation
Pedal value
difference between
channel 1 and
channel 2 greater
than a threshold Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to electrical circuit
diagrams and check accelerator pedal position (APP) sensor circuit 1
and 2 for short to ground, power. Set ignition status to 'ON' engine
'OFF' check and record 'Pedal value sensor 1' and 'Pedal value
sensor 2' datalogger signal. With pedal in fully depressed position,
value of signals should be approximately 99%, with pedal in idle
position, value of signals should be approximately 0%, if not
suspect the pedal position sensor, check and install a new sensor
as required P213864 Throttle/Pedal
Position Sensor/Switch
D/E Voltage
Correlation
Gradient on one
channel without
gradient on the
other Carry out any pinpoint tests associated with this DTC using the
manufacturer approved diagnostic system. Refer to electrical circuit
diagrams and check accelerator pedal position (APP) sensor circuit 1
and 2 for short to ground, power. Set ignition status to 'ON' engine
'OFF' check and record 'Pedal value sensor 1' and 'Pedal value
sensor 2' datalogger signal. With pedal in fully depressed position,
value of signals should be approximately 99%, with pedal in idle
position, value of signals should be approximately 0%, if not
suspect the pedal position sensor, check and install a new sensor
as required
Page 1638 of 3039
10 Electric throttle actuator 11 ABS (anti-lock brake system) module www.JagDocs.com
Page 1639 of 3039
Published: 11-May-2011
Speed Control - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Speed Control - Overview
Description and Operation
OVERVIEW
Speed Control
The speed control system is integrated with the engine management system and uses fueling intervention to automatically
maintain a set vehicle speed. Once engaged, the system can also be used to accelerate the vehicle without using the
accelerator pedal.
The speed control system comprises the following components:
On/Off/Suspend switch
'+' and '-' (set/accelerate and decelerate) steering wheel switches
Resume switch
Clock spring
Speed control warning indicator.
Adaptive Speed Control
The adaptive speed control system uses a forward looking radar sensor to scan the road ahead, looking for objects that are
moving at a different rate to itself. When a target is identified the adaptive speed control system will monitor the time gap
between it and the target vehicle. When that gap falls below a set driver selected level the adaptive speed control system will
intervene slowing the vehicle by backing off the throttle and/ or applying the brakes, until the correct gap is attained.
The adaptive speed control system comprises the following components:
Adaptive speed control sensor
Adaptive speed control module
Steering wheel control switches
ECM (engine control module)
Electric throttle actuator
ABS (anti-lock brake system) module and pump
Adaptive speed control warning indicator (in the instrument cluster).
Page 1641 of 3039
6 Clockspring 7 APP (accelerator pedal position) sensor 8 Electric throttle actuator 9 Brake lamp/brake test switch 10 Adaptive speed control radar sensor 11 Diagnostic socket 12 Instrument cluster 13 TCM (transmission control module) 14 Adaptive speed control module
SPEED CONTROL System Operation
The speed control system uses inputs from the brake lamp/brake test switch, the APP sensor, the ECM and the ABS module.
Speed control is operated by the driver using only the steering wheel switches. When speed control is active, the ECM regulates the PWM (pulse width modulation) signals to the fuel injectors to adjust the fuel supply as required to maintain the
set speed.
During speed control operation, the ECM controls vehicle speed by adjusting fuel injection duration and timing. When the accelerator pedal is pressed with speed control active, the ECM outputs a calculated throttle angle signal in place of the actual throttle angle signals produced by the APP sensor. The calculated throttle angle is derived from fuel demand.
The minimum set speed for speed control is 18 mph (30 (km/h). Speed control is automatically suspended if the following
conditions apply:
Vehicle speed falls below 18 mph (30 km/h)
The brake pedal is pressed
The cancel button is pressed
Neutral, park or reverse gear is selected
The difference between actual speed and the set speed is too great
If the engine speed becomes near to the red line (maximum engine speed)
If the accelerator pedal is used to accelerate beyond the set speed for too long.
ADAPTIVE SPEED CONTROL
The adaptive speed control system comprises the following components:
Adaptive speed control sensor
Adaptive speed control module
Steering wheel control switches
ECM
Electric throttle actuator
ABS module and pump Adaptive speed control warning indicator.
The adaptive speed control system uses a forward looking radar sensor to scan the road ahead, looking for objects that are
moving at a different rate to itself. When a target is identified the adaptive speed control system will monitor the time gap
between it and the target vehicle. When that gap falls below a set driver selected level the adaptive speed control system will
intervene slowing the vehicle by backing off the throttle and/ or applying the brakes, until the correct gap is attained. The
driver can chose between four gap settings, 1, 1.4, 1.8 and 2.2 seconds.
The system will detect but not react to the following:
Vehicles in the oncoming lane
Stationary vehicles
Pedestrians
Vehicles not in the same lane.
Adaptive speed control is active when the vehicle is moving. Adaptive Speed Control only functions when a set speed is
entered in normal speed control mode. The adaptive speed control system only intervenes with the set speed when it detects
a target vehicle, and then only if the minimum time gap is breached.
It is important to note that the system is intended for use in limited driving situations, does not remove control and
responsibility from the driver, and at all times can be quickly overridden. The adaptive speed control system is not a collision
warning system and will not react to stationary objects. The system does not operate below a minimum speed of
approximately 30 km/h (20 mph) since it is unsuitable for use in cities or congested traffic. The system is best suited to main
roads/ highways with gradual bends.
The ECM, throttle body and throttle control are unchanged from those used for non adaptive speed control variants.
The adaptive speed control system is based on the use of a front mounted radar sensor. The sensor transmits a 1.5° wide
beam forward of the vehicle and detects the returning signals reflected off other vehicles and objects ahead.
The 1.5° wide radar beam is mechanically scanned at a rate of 10 sweeps/second across a total arc of 15° centered on the
Page 1642 of 3039
longitudinal axis of the vehicle. The radar operates at millimetric wavelengths (76 - 77 GHz) and transmits a frequency
modulated continuous wave signal at a relatively low power level (no high power pulses).
With the ignition ON, the adaptive speed control module is powered up but no radar transmissions are emitted until the
vehicle is in motion.
In follow mode a set speed is selected in the normal speed control manner and this speed is maintained until a slower vehicle
is encountered in the lane ahead. When the vehicle ahead comes within the effective range of the radar sensor, the system
identifies it as a target vehicle and an icon is illuminated on the instrument cluster to indicate that the system is in "follow
mode". When the distance between the two vehicles closes to a set time gap, the adaptive speed control system closes the
throttle and if necessary applies the brakes to maintain the set time gap. Follow mode is effectively a closed loop system. If
several vehicles are ahead, the closest vehicle is chosen as the target to follow. If the target vehicle moves out of radar range,
or if either vehicle changes lane or drops below the minimum operating speed, the system exits follow mode and the follow
mode icon is extinguished. The adaptive speed control system will only raise its speed to the originally set speed, it will not
accelerate past this speed to maintain a time gap.
Driver operation of the foot brake or control switches will immediately cancel adaptive speed control.
When the vehicle is in follow mode the follow mode warning indicator is illuminated in the instrument cluster and the current
gap setting will be displayed in the message center.
The radar sensor detects three primary parameters of objects within the scanned arc. These are:
Range
Relative velocity
Angle.
Range: The radar sensor detects the presence and ranges of different vehicles and objects within the scanned arc up to a
distance of approximately 130 meters. The transmitted signal frequency changes continuously in a cyclic pattern (modulation).
This means that, in the time taken for the signal wave front, to travel to and from a target vehicle (or other object), the
transmission frequency will have changed. The difference between the received signal frequency and the new transmission
frequency is proportional to the distance between the transmitting vehicle and the target vehicle.
Relative velocity: When the signal is reflected off a vehicle moving at a different speed (opening or closing gap) an effect
known as the Doppler shift causes an extra frequency modulation to be imposed on the signal. This Doppler frequency varies
with the relative speed of the vehicle being followed, enabling the system to differentiate between vehicles traveling at
different speeds and also between moving vehicles and stationary objects.
Angle: Using a narrow angle beam to scan horizontally enables the system to distinguish between vehicles in different lanes
and between vehicles and roadside objects.
System Restrictions
The adaptive speed control system is only intended to provide enhanced speed control as described above in certain restricted
conditions. The following points should be noted: Item Description 1 Forward Alert warning indicator 2 Follow mode warning indicator
Page 1645 of 3039
Item Description 1 Forward alert switch The forward alert system utilizes the adaptive speed control system components. Forward alert is turned on and off
independently of adaptive speed control, via a switch mounted in the lower outboard knee bolster switchpack. Forward alert
will notify the driver by means of a chime, a warning indicator in the instrument cluster and an indication in the message
center, when a target vehicle comes into range. The system will NOT use throttle or brake intervention to slow the vehicle.
The forward alert switch is connected to the instrument cluster in a resistive ladder with the luggage compartment opening
switch and the fuel filler flap switch. The instrument cluster sends the forward alert information to the Adaptive speed control
module on the CAN bus.
WARNING: The system is intended as a driver aid and should be used as such. The system is NOT a collision warning or
avoidance device.
The system sensitivity can be adjusted in the same manner as the adaptive speed control, via the steering wheel mounted
switches. Each adjustment is accompanied by a message in the message center. FORWARD ALERT SWITCHES
Page 1646 of 3039
Published: 08-Nov-2013
Speed Control - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Speed Control
Diagnosis and Testing
Principles of Operation
For a detailed description of the speed control system, refer to the relevant Description and Operation sections in the
workshop manual.
Inspection and Verification
CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.
1. Verify the customer concern.
2. Visually inspect for obvious signs of damage and system integrity.
Visual Inspection
Mechanical Electrical
Speed control sensor
Ensure the speed control sensor is free from obstructions
Speed control module
Brake switch
Fuses
Wiring harness
Electrical connector(s)
Steering wheel switches
Brake switch
Speed control sensor
Speed control module
Engine Control Module (ECM)
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 Symptom Chart, alternatively, check for
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.
Speed Control Sensor Adjustment (vehicles with adaptive system installed)
An incorrectly aligned speed control sensor can cause incorrect system operation. Before starting any repair work on the speed
control system, on vehicles with the adaptive system installed, check speed control sensor for correct vertical alignment, and
carry out speed control sensor alignment procedure using manufacturer approved diagnostic system.
Symptom Chart
Symptom Possible Causes Action Speed control inhibited or
disabled
Power or ground supply to
speed control module or speed
control sensor
Steering wheel speed control
switch/circuits
Throttle sensors
Brake switch
Anti-Lock Brake System fault
Check for DTCs that could be caused by power or
ground failure to the module or sensor and refer to
DTC Index
Check for sticking, jammed and broken speed control
switches. Refer to the electrical circuit diagrams and
check speed control switch circuits for short, open
circuit
For throttle position sensor tests. REFER to:
Electronic Engine Controls - 3.0L Diesel (303-14
Electronic Engine Controls - 3.0L Diesel, Diagnosis and
Testing),
Electronic Engine Controls - 3.0L (303-14B Electronic Engine Controls - V6 3.0L Petrol, Diagnosis and
Testing),
Electronic Engine Controls (303-14 Electronic Engine
Controls - V8 4.2L Petrol/V8 S/C 4.2L Petrol, Diagnosis
and Testing).
Check for correct installation and adjustment of brake
switch. Refer to the electrical circuit diagrams and
check brake switch circuits for short, open circuit
Check ABS system for related DTCs and refer to the
relevant DTC Index Unable to regulate/adjust
vehicle speed
Steering wheel switch
malfunction
Check for sticking, jammed and broken speed control
switches. Refer to the electrical circuit diagrams and
check speed control switch circuits for short, open
circuit
Page 1785 of 3039
The functionality for each of the above warning indicators is described in the following sections:
1 and 2. Turn Signal Indicators
The turn signal indicators are controlled by the CJB on receipt of medium speed CAN bus signals from the instrument cluster.
The instrument cluster outputs a voltage to the turn signal indicator switch. The switch contains resistors of different values.
When the switch is operated in either the LH or RH direction, the voltage is passed to a ground connection in the instrument cluster which detects the reduced voltage supplied via the resistors. When the turn signal indicator switch is operated in the
LH or RH direction, the instrument cluster detects the ground voltage and determines whether a LH or RH selection is made.
The instrument cluster transmits a medium speed CAN message to the CJB for operation of the applicable turn signal indicators. The message can contain a number of states for each possible switch position and also an out of range low and
high state for circuit faults and an initial value for the switch neutral position. The turn signal indicators are not subject to the
3 second indicator check when the ignition is switched on.
The RJB (rear junction box) software controls the flash rate of the warning indicator which sends 'ON' and 'OFF' signals to the
instrument cluster which flashes the indicators in a green color. During normal operation, the warning indicator flashes slowly,
accompanied simultaneously by a sound from the instrument cluster sounder. If a fault exists, the RJB transmits a message to the instrument cluster which responds by displaying an appropriate message in the message center.
The hazard warning indicators are controlled by the CJB on receipt of a completed ground path from the hazard warning indicator switch. The CJB outputs a medium speed CAN message to the instrument cluster which operates both the LH and RH turn signal indicators simultaneously. The hazard warning indicators can operate with the ignition switched off, therefore the
CAN message from the CJB will also carry a 'wake-up' message for the instrument cluster. 3. Brake Warning Indicator
This warning indicator is displayed in a red or amber color (dependant on market) as a brake symbol in all markets except
United States of America (USA) which have the word 'BRAKE' in place of the symbol. The indicator is controlled by high speed
CAN messages from the ABS module and the parking brake control module. The indicator is illuminated in a red color for a 3 second indicator check when the ignition is switched on.
The instrument cluster monitors the fluid level in the brake fluid reservoir using a hardwired level switch. If the fluid level falls
to below a determined level, the switch contact is broken and the ABS module detects the low fluid level condition. The instrument cluster illuminates the warning indicator and simultaneously displays a 'BRAKE FLUID LOW' message in the
message center.
NOTE: If both the brake warning indicator and the ABS warning indicator illuminate simultaneously, a major fault in the brake system will have occurred.
The warning indicator also displays parking brake status. When the parking brake is applied, the warning indicator will be
illuminated by the instrument cluster and, if the vehicle is moving, the message 'PARK BRAKE APPLIED' will be also displayed
in the message center in response to a CAN message from the parking brake control module.
If a condition exists where the parking brake cannot be applied, the parking brake control module issues a CAN message to the instrument cluster which flashes the warning lamp on and off and is accompanied with a message 'CANNOT APPLY PARK BRAKE'.
If a fault occurs in the parking brake system, the parking brake control module issues a CAN message to the instrument cluster which illuminates the warning indicator and displays the message 'PARK BRAKE FAULT' in the message
center.
4. Forward Alert Indicator
The forward alert system uses the components of the adaptive speed control system to alert the driver of the presence of a
vehicle ahead. The system can be turned on and off using a switch located in the auxiliary lighting switch when the adaptive
speed control system is off. The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is
switched on.
The forward alert system is controlled by the adaptive speed control module. When the switch is pressed, the forward alert
system is activated and the adaptive speed control module issues a forward alert active message on the high speed CAN bus to the instrument cluster. The forward alert icon in the instrument cluster will illuminate in an amber color and a 'FORWARD
ALERT' message will be displayed in the message center. When the button is pressed a second time, the module issues a
forward alert off CAN message. The forward alert system will be deactivated, the forward alert icon will go off and a message 'FORWARD ALERT OFF' will be displayed in the message center.
5. Automatic Speed Limiter (ASL) Indicator
The ASL is controlled by the ECM (engine control module). An ASL switch is located in the floor console, adjacent to the gear
selector lever. When the ASL switch is pressed, this is sensed by the ECM which issues a high speed CAN message to the instrument cluster. The instrument cluster illuminates the ASL warning indicator in an amber color to show the driver that ASL
is active. The driver sets the required speed using the speed control SET +/- switches on the steering wheel. The selected
speed is shown by the message ' LIMITER SET XXX MPH / K/MH' in the message center. The indicator is illuminated in an
amber color for a 3 second indicator check when the ignition is switched on. ASL can be deselected by pressing the ASL switch,
by depressing the throttle pedal initiating kick-down or by pressing the 'cancel' switch on the steering wheel. The ASL indicator
will go off and the message center will display the message 'limiter cancelled' for 4 seconds. If a fault occurs in the ASL
system, the ECM will send a message to the instrument cluster to illuminate the ASL indicator and display the message 'LIMITER NOT AVAILABLE'.