2010 JAGUAR XFR Control module

be replaced as soon as possible to make sure full SRS protection.


If the SRS components are to be replaced, the part number/bar code of the new unit must be recorded.

SRS component testing precautions

The SRS components are triggered using relatively low operating currents, always adhere to the following :


WARNING: Never use a multimeter or other general purpose equipment on SRS components. Use only approved JLR
diagnostic equipment to diagnose system faults.




WARNING: Do not use electrical test equipment on the SRS harness while it is connected to any of the SRS components,
it may cause accidental deployment and injury.
Handling and storage

Always observe the following precautions when handling SRS components:



Never drop an SRS component. The airbag diagnostic control unit is a particularly shock sensitive device and must be
handled with extreme care. Airbag modules and seat belt pre-tensioners could deploy if subjected to a strong shock.
Never wrap your arms around an airbag module. If a module has to be carried, hold it by the cover with the cover
uppermost and the base away from your body.
Never transport airbag modules or seat belt pre-tensioners in the passenger compartment of a vehicle. Always use the
luggage compartment of the vehicle for carrying airbag modules and seat belt pre-tensioner units.
Never attach anything to an airbag cover or any trim component covering an airbag module. Do not allow anything to
rest on top of an airbag module.
Always keep components cool, dry and free from contamination.
Never apply grease or cleaning solvents to seat belt pre-tensioner units, component failure could result.
Always store an airbag module with the deployment side uppermost. If it is stored deployment side down, accidental
deployment will propel the airbag module with sufficient force to cause serious injury.
Keep new airbag modules in their original packaging until just prior to installing. Place the old module in the empty
packaging for carriage.

Deployment procedures and precautions as detailed in this manual should be strictly adhered to. Only personnel who have
undergone the appropriate training should undertake deployment of airbag and pre-tensioner modules. The following
precautions must be complied with:
Only use deployment equipment approved for the intended purpose.
Deployment of airbag / pre-tensioner modules must be performed in a well ventilated area which has been designated
for the purpose.
Make sure airbag / pre-tensioner modules are not damaged or ruptured before attempting to deploy.
Where local legislation exists, notify the relevant authorities of intention to deploy airbag and pretensioner units.
When deploying airbag pre-tensioner units, make sure that all personnel are at least 15 metres (45 feet) away from the
deployment zone.
Make sure deployment tool is connected correctly, in compliance with the instructions detailed in the SRS section of this
manual. In particular, make sure deployment tool is NOT connected to battery supply before connecting to airbag
module connector.
When deploying seat belt pre-tensioners, make sure pre-tensioner unit is secured correctly to the seat.
When removing deployed airbag modules and pre-tensioner units, wear protective clothing. Use gloves and seal
deployed units in a plastic bag.
Following deployment of any component of the SRS system within the vehicle, all SRS components must be replaced.
DO NOT reuse or salvage any parts of the SRS system.
Do not lean over an airbag module when connecting deployment equipment.

If a vehicle is to be scrapped, undeployed airbag modules and pre-tensioner units must be manually deployed. In this case
airbags can be deployed in the vehicle. Before deployment, make sure the airbag module is secure within its correct mounting
position. Deployment of the driver's airbag in the vehicle may damage the steering wheel; if the vehicle is not being scrapped,
deploy the module outside of the vehicle.

SRS Component Replacement Policy

CAUTIONS:


The Restraints Control Module (RCM) will log a crash fault after every impact which is severe enough to cause airbag
deployment. It is possible to have three crashes/impacts logged after one event where, for example, a front, side and
rollover has occurred. After the third fault is logged, the SRS warning lamp will be illuminated and the RCM must be
installed. After any airbag deployment a new RCM must be installed.


The SRS side impact sensor must be replaced if there are any signs of physical damage or if the restraints control module
(RCM) is registering a fault.
The following information details the policy for replacement of SRS components as a result of a vehicle accident.

Impacts which do not deploy the airbags or pre-tensioners

Check for structural damage in the area of the impact paying particular attention to bumper armatures, longitudinals and
bracketry.
Impacts which deploy the airbags or pre-tensioners

The replacement and inspection policy is dependent on the type and severity of the crash condition. The following guidelines
are the minimum that should be exercised as a result of the deployment of specific SRS components.

Check for structural damage in the area of impact paying particular attention to bumper armatures, longitudinals and
bracketry.

Front Airbag Deployment - Driver and Passenger

CAUTION: If the front airbags are deployed, the following components must be replaced:
Driver airbag module
Passenger airbag module
Fly leads (where applicable) connecting front airbag modules to SRS harness
Front seat belt buckle pre-tensioner
Rear seat belt pre-tensioners - if installed
Driver's seat belt retractor - if installed
Rotary coupler
Any front impact sensors that have been physically damaged or if a fault is being registered
Restraints control module (RCM) if the three crashes/impacts have been stored
Additionally, the following items must be inspected for damage and replaced as necessary:

Front passenger's seat belt retractor and webbing, tongue latching function, 'D' loop and body anchorage point
Rear seat belt buckles, webbing, buckle covers, body anchorage points and tongue latching function
Fascia moulding adjacent to passenger airbag module
Steering wheel
Front seat frames and head restraints
Steering column - if adjustment is lost or if there are signs of collapse
Seat belt height adjusters

Rear seat belts

Side Air Bags


CAUTION: If the side (thorax) air bags are deployed, the following components must be replaced on the side of the
vehicle on which the deployment occurred:
Side (thorax) airbag
Any side impact sensors that have been physically damaged or if a fault is being registered
Restraints Control Module (RCM) if the three crashes/impacts have been stored
Additionally, the following items must be inspected for damage and replaced as necessary:

Front seat belts, retractors and webbing, tongue latching function, 'D' loop and body anchorage points
Rear seat belt buckles, webbing, buckle covers, tongue latching function, and body anchorage points
Front seat frame and head restraints
Door trim casing
Seat belt height adjusters
Rear seat belts
Head airbag modules


CAUTION: If the head airbag modules are deployed, the following components must be replaced on the side of the
vehicle on which the deployment occurred:
Head airbag modules
Link lead between airbag gas generator and restraints control module (RCM) harness
Airbag retaining clips
Internal trim finisher
Front seat belt buckle pre-tensioners
Any side impact sensors that have been physically damaged or if a fault is being registered
Restraints Control Module (RCM) if the three crashes/impacts have been stored
Additionally, the following items must be inspected for damage and replaced as necessary:

Headlining
Component mounting brackets
Front seat belts, retractors and webbing, tongue latching function, 'D' loop and body anchorage points
Rear seat belt buckles, webbing, buckle covers, tongue latching function, and body anchorage points
Adjacent trim components
Seat belt height adjusters

Rear impacts

CAUTION: If the seat belt pre-tensioners are deployed during a rear impact, the following components must be replaced:
Seat belt pre-tensioners
Front and rear seat belt retractors used during the impact
Restraints Control Module (RCM) if the three crashes/impacts have been stored

Additionally, the following items must be inspected for damage and replaced as necessary:
Seat belt height adjusters
Front seat belts, retractors and webbing, tongue latching function, 'D' loop and body anchorage points
Rear seat belt buckles, webbing, buckle covers, tongue latching function, and body anchorage points

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Adaptive
Damping Module (SUMB)
Description and Operation

Adaptive Damping Module (SUMB)


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
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system)


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a
current calibration certificate. When testing resistance, always take the resistance of the digital multimeter leads into account


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion


If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent
concern may be the cause. Always check for loose connections and corroded terminals


Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the
manufacturers approved diagnostic system


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as required

he table below lists all diagnostic trouble codes (DTCs) that could be logged in the adaptive damping module, for additional
diagnosis and testing information refer to the relevant diagnosis and testing section
For additional information, refer to: Vehicle Dynamic Suspension (204-05 Vehicle Dynamic Suspension, Diagnosis and Testing).

DTC Description Possible Causes Action C101D-12
Left Front
vertical
acceleration
sensor - Short
to power
Left Front vertical
acceleration sensor
circuit short to power
Refer to the electrical circuit diagrams and check left front
vertical acceleration sensor circuit for short to power or
another circuit. Repair circuit, clear the DTC and retest the
system C101D-14
Left Front
vertical
acceleration
sensor - Short
to ground, open
circuit
Left Front vertical
acceleration sensor
circuit short to
ground, open circuit
Vertical acceleration
sensor fault
Refer to the electrical circuit diagrams and check front vertical
acceleration sensor circuit for short to ground, open circuit. If
no fault found on wiring suspect sensor. Replace sensor, clear
DTC and retest the system C101D-22
Left Front
vertical
acceleration
sensor - Signal
amplitude >
maximum
Left front vertical
acceleration sensor
insecurely mounted
Left front vertical
acceleration sensor
signal circuit short to
another circuit
Left front vertical
acceleration sensor
With vehicle parked on a level surface, read Left Front Vertical
Accelerometer voltage and check it lies in range 1.9 to 2.1
volts. If not OK then check electrical wiring for shorts, loose
connections and repair as required. If wiring OK then suspect
faulty sensor/incorrectly fitted sensor. Check the sensor is
correctly mounted, secure or replace sensor as required. Refer
to the new module/component installation note at the top of
the DTC Index, clear DTC and retest system

DTC Description Possible Causes Action internal fault
C101D-26
Left Front
vertical
acceleration
sensor - Signal
rate of change
below threshold
Left front vertical
acceleration sensor
signal circuit short to
another circuit
Left front vertical
acceleration sensor
internal fault
Refer to the electrical circuit diagrams and check Left Front
Vertical Accelerometer signal circuit for faults, if circuit is
correct suspect faulty sensor, refer to the new
module/component installation note at the top of the DTC
Index. Replace the sensor, clear the DTC and retest the
system C101D-78
Left Front
vertical
acceleration
sensor -
Alignment or
adjustment
incorrect
Left front vertical
acceleration sensor
bracket bent
Left front vertical
acceleration sensor
damaged
Check Left Front Vertical Accelerometer for location and
security, if correct suspect faulty Accelerometer, refer to the
new module installation note at the top of the DTC Index.
Replace the sensor/bracket as required, clear the DTC and
retest the system C101E-12
Right Front
vertical
acceleration
sensor - Short
to power
Right Front vertical
acceleration sensor
circuit short to power
Refer to the electrical circuit diagrams and check right front
vertical acceleration sensor circuit for short to power or
another circuit. Repair circuit, clear the DTC and retest the
system C101E-14
Right Front
vertical
acceleration
sensor - Short
to ground, open
circuit
Right Front vertical
acceleration sensor
circuit short to
ground, open circuit
Vertical acceleration
sensor fault
Refer to the electrical circuit diagrams and check right front
vertical acceleration sensor circuit for short to ground, open
circuit. If no fault found on wiring suspect sensor. Replace
sensor, clear DTC and retest the system C101E-22
Right Front
vertical
acceleration
sensor - Signal
amplitude >
maximum
Right front vertical
acceleration sensor
insecurely mounted
Right front vertical
acceleration sensor
signal circuit short to
another circuit
Right front vertical
acceleration sensor
internal fault
With vehicle parked on a level surface, read Right Front
Vertical Accelerometer voltage and check it lies in range 1.9 to
2.1 volts. If not OK then check electrical wiring for shorts,
loose connections and repair as required. If wiring OK then
suspect faulty sensor/incorrectly fitted sensor. Check the
sensor is correctly mounted, secure or replace sensor as
required. Refer to the new module/component installation
note at the top of the DTC Index, clear DTC and retest system C101E-26
Right Front
vertical
acceleration
sensor - Signal
rate of change
below threshold
Right front vertical
acceleration sensor
signal circuit short to
another circuit
Right front vertical
acceleration sensor
internal fault
Refer to the electrical circuit diagrams and check Right Front
Vertical Accelerometer signal circuit for faults, if circuit is
correct suspect faulty sensor, refer to the new
module/component installation note at the top of the DTC
Index. Replace the sensor, clear the DTC and retest the
system C101E-78 Right Front
Right front vertical
Check Right Front Vertical Accelerometer for location and vertical acceleration acceleration sensor security, if correct suspect faulty Accelerometer, refer to the sensor - bracket bent new module installation note at the top of the DTC Index. Alignment or Right front vertical Replace the sensor/bracket as required, clear the DTC and adjustment acceleration sensor retest the system incorrect damaged C1024-00
System Temporarily
Disabled Due To
Power
Interruption
During Driving -
No sub type
information
Loss of power to
control module whilst
driving
Refer to the electrical circuit diagrams and check power and
ground circuits to Adaptive Damping Control Module for
intermittent or poor connection. Repair wiring circuits as
required, clear DTC and retest the system C1030-12
Left Rear
vertical
acceleration
sensor - Short
to power
Left Rear vertical
acceleration sensor
circuit short to power
Refer to the electrical circuit diagrams and check left Rear
vertical acceleration sensor circuit for short to power or
another circuit. Repair circuit, clear the DTC and retest the
system

DTC Description Possible Causes Action C1030-14
Left Rear
vertical
acceleration
sensor - Short
to ground, open
circuit
Left rear vertical
acceleration sensor
circuit short to
ground, open circuit
Vertical acceleration
sensor fault
Refer to the electrical circuit diagrams and check left Rear
vertical acceleration sensor circuit for short to ground, open
circuit. If no fault found on wiring suspect sensor. Replace
sensor, clear DTC and retest the system C1030-22
Left Rear
vertical
acceleration
sensor - Signal
amplitude >
maximum
Left Rear vertical
acceleration sensor
insecurely mounted
Left Rear vertical
acceleration sensor
signal circuit short to
another circuit
Left Rear vertical
acceleration sensor
internal fault
With vehicle parked on a level surface, read Left Rear Vertical
Accelerometer voltage and check it lies in range 1.9 to 2.1
volts. If not OK then check electrical wiring for shorts, loose
connections and repair as required. If wiring OK then suspect
faulty sensor/incorrectly fitted sensor. Check the sensor is
correctly mounted, secure or replace sensor as required. Refer
to the new module/component installation note at the top of
the DTC Index, clear DTC and retest system C1030-26
Left Rear
vertical
acceleration
sensor - Signal
rate of change
below threshold
Left Rear vertical
acceleration sensor
signal circuit short to
another circuit
Left Rear vertical
acceleration sensor
internal fault
Refer to the electrical circuit diagrams and check Left Rear
Vertical Accelerometer signal circuit for faults, if circuit is
correct suspect faulty sensor, refer to the new
module/component installation note at the top of the DTC
Index. Replace the sensor, clear the DTC and retest the
system C1030-78
Left Rear
vertical
acceleration
sensor -
Alignment or
adjustment
incorrect
Left Rear vertical
acceleration sensor
bracket bent
Left Rear vertical
acceleration sensor
damaged
Check Left Rear Vertical Accelerometer for location and
security, if correct suspect faulty Accelerometer, refer to the
new module installation note at the top of the DTC Index.
Replace the sensor/bracket as required, clear the DTC and
retest the system C1A03-12
Left Front
Height Sensor -
Circuit short to
power
Height sensor circuit
shorted to another
cable
Height sensor internal
fault
Refer to the electrical circuit diagrams and check Front Left
Height Sensor circuit for short to power, If circuit correct
suspect Sensor internal fault, replace as required C1A03-14
Left Front
Height Sensor -
Circuit short to
ground or open
Wiring to sensor
(signal) open circuit
Wiring to height
sensor partial short to
ground
Wiring to height
sensor short to other
cable
Height sensor internal
electrical fault
Disconnect electrical connector to height sensor and inspect
connector pins & terminals for evidence of corrosion or water
ingress. If no corrosion found, disconnect harness at Control
Module. A: Check for short circuits between any of the 3
terminals and vehicle ground. B: Check for electrical continuity
between the two connectors for each of the 3 terminals.
Reconnect electrical connector at Control Module only. C:
Check voltages at terminals within height sensor connector
(sensor not connected), with respect to vehicle body. •
Voltage to sensor ground connection should be ~0v • Voltage
to sensor signal connection should be ~0v • Voltage to sensor
supply connection should be ~5v All voltages should be within
± 0.15v C1A03-21
Left Front
Height Sensor -
Signal amplitude
< minimum
Height sensor linkage
not connected
Height sensor or
bracket loose
Height sensor bracket
bent
Incorrect height
calibration
Height sensor linkage
toggled
Height sensor water
ingress
Wiring to height
sensor partial short to
ground
Wiring to height
sensor short to other
cable
Height sensor
Inspect for damage or loose fixings. NOTE If any height
sensor fixings were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Confirm that the correct height sensor part
number is fitted, as specified in the service parts database.
To check height sensor: Disconnect electrical connector to
height sensor and inspect connecter pins & terminals for
evidence of corrosion or water ingress. If no corrosion found,
disconnect harness at Control Module. A: Check for short
circuits between any of the 3 terminals and vehicle ground. B:
Check for electrical continuity between the two connectors for
each of the 3 terminals. Reconnect electrical connector at
Control Module only. C: Check voltages at terminals within
height sensor connector (sensor not connected), with respect
to vehicle body. • Voltage to sensor ground connection should
be ~0v • Voltage to sensor signal connection should be ~0v •
Voltage to sensor supply connection should be ~5v All
voltages should be within ± 0.15v. To check sensor operation
on the vehicle: Check for water ingress around the height

DTC Description Possible Causes Action electrical fault
Height sensor linkage
bent
Incorrect height
sensor fitted sensors, electrical connectors or shaft end. Check for
excessive movement in the shaft in all directions. Raise
vehicle (ideally on wheels-free ramp) until suspension on
corner under investigation is at rebound to gain access to
height sensor. Access may be improved by removing road
wheel. Carefully disconnect the height sensor link from the
upper suspension arm. Monitor the height sensor signal
voltage output for the height sensor under investigation.
Position the sensor arm so it is in the mid position and
confirm that the voltage is around 2.5 volts. Move the sensor
arm over the range ±40° around the mid position and confirm
that the voltage changes smoothly between around 0.2 volts
and 4.8 volts. If voltages are incorrect or do not change
smoothly then replace sensor. NOTE: For angles of movement
beyond ±40°, the sensor signal will clamp to a voltage of
~0.15v or ~4.85v, depending on position of sensor lever. This
is normal. When investigation is complete, refit height sensor
link to upper arm. If any fixings to the height sensor body or
mounting bracket were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Refer to the relevant section of the workshop
manual for the calibration procedure C1A03-22
Left Front
Height Sensor -
Signal amplitude
> maximum
Height sensor linkage
not connected
Height sensor or
bracket loose
Height sensor bracket
bent
Incorrect height
calibration
Height sensor linkage
toggled
Height sensor water
ingress
Wiring to height
sensor partial short to
ground
Wiring to height
sensor short to other
cable
Height sensor
electrical fault
Height sensor linkage
bent
Incorrect height
sensor fitted
Inspect for damage or loose fixings. NOTE If any height
sensor fixings were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Confirm that the correct height sensor part
number is fitted, as specified in the service parts database.
To check height sensor: Disconnect electrical connector to
height sensor and inspect connecter pins & terminals for
evidence of corrosion or water ingress. If no corrosion found,
disconnect harness at Control Module. A: Check for short
circuits between any of the 3 terminals and vehicle ground. B:
Check for electrical continuity between the two connectors for
each of the 3 terminals. Reconnect electrical connector at
Control Module only. C: Check voltages at terminals within
height sensor connector (sensor not connected), with respect
to vehicle body. • Voltage to sensor ground connection should
be ~0v • Voltage to sensor signal connection should be ~0v •
Voltage to sensor supply connection should be ~5v All
voltages should be within ± 0.15v. To check sensor operation
on the vehicle: Check for water ingress around the height
sensors, electrical connectors or shaft end. Check for
excessive movement in the shaft in all directions. Raise
vehicle (ideally on wheels-free ramp) until suspension on
corner under investigation is at rebound to gain access to
height sensor. Access may be improved by removing road
wheel. Carefully disconnect the height sensor link from the
upper suspension arm. Monitor the height sensor signal
voltage output for the height sensor under investigation.
Position the sensor arm so it is in the mid position and
confirm that the voltage is around 2.5 volts. Move the sensor
arm over the range ±40° around the mid position and confirm
that the voltage changes smoothly between around 0.2 volts
and 4.8 volts. If voltages are incorrect or do not change
smoothly then replace sensor. NOTE: For angles of movement
beyond ±40°, the sensor signal will clamp to a voltage of
~0.15v or ~4.85v, depending on position of sensor lever. This
is normal. When investigation is complete, refit height sensor
link to upper arm. If any fixings to the height sensor body or
mounting bracket were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Refer to the relevant section of the workshop
manual for the calibration procedure C1A03-76
Left Front
Height Sensor -
Wrong mounting position
Incorrect height
calibration
Refer to the workshop manual and perform the height sensor
calibration procedure. Clear the DTC and retest the system C1A03-78
Left Front
Height Sensor -
Alignment or
adjustment
incorrect
Incorrect height
calibration
Refer to the workshop manual and perform the height sensor
calibration procedure. Clear the DTC and retest the system

DTC Description Possible Causes Action C1A04-12
Right Front
Height Sensor -
Circuit short to
power
Height sensor circuit
shorted to another
cable
Height sensor internal
fault
Refer to the electrical circuit diagrams and check Front Right
Height Sensor circuit for short to power, If circuit correct
suspect Sensor internal fault, replace as required C1A04-14
Right Front
Height Sensor -
Circuit short to
ground or open
Wiring to sensor
(signal) open circuit
Wiring to height
sensor partial short to
ground
Wiring to height
sensor short to other
cable
Height sensor internal
electrical fault
Disconnect electrical connector to height sensor and inspect
connector pins & terminals for evidence of corrosion or water
ingress. If no corrosion found, disconnect harness at Control
Module. A: Check for short circuits between any of the 3
terminals and vehicle ground. B: Check for electrical continuity
between the two connectors for each of the 3 terminals.
Reconnect electrical connector at Control Module only. C:
Check voltages at terminals within height sensor connector
(sensor not connected), with respect to vehicle body. •
Voltage to sensor ground connection should be ~0v • Voltage
to sensor signal connection should be ~0v • Voltage to sensor
supply connection should be ~5v All voltages should be within
± 0.15v C1A04-21
Right Front
Height Sensor -
Signal amplitude
< minimum
Height sensor linkage
not connected
Height sensor or
bracket loose
Height sensor bracket
bent
Incorrect height
calibration
Height sensor linkage
toggled
Height sensor water
ingress
Wiring to height
sensor partial short to
ground
Wiring to height
sensor short to other
cable
Height sensor
electrical fault
Height sensor linkage
bent
Incorrect height
sensor fitted
Inspect for damage or loose fixings. NOTE If any height
sensor fixings were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Confirm that the correct height sensor part
number is fitted, as specified in the service parts database.
To check height sensor: Disconnect electrical connector to
height sensor and inspect connecter pins & terminals for
evidence of corrosion or water ingress. If no corrosion found,
disconnect harness at Control Module. A: Check for short
circuits between any of the 3 terminals and vehicle ground. B:
Check for electrical continuity between the two connectors for
each of the 3 terminals. Reconnect electrical connector at
Control Module only. C: Check voltages at terminals within
height sensor connector (sensor not connected), with respect
to vehicle body. • Voltage to sensor ground connection should
be ~0v • Voltage to sensor signal connection should be ~0v •
Voltage to sensor supply connection should be ~5v All
voltages should be within ± 0.15v. To check sensor operation
on the vehicle: Check for water ingress around the height
sensors, electrical connectors or shaft end. Check for
excessive movement in the shaft in all directions. Raise
vehicle (ideally on wheels-free ramp) until suspension on
corner under investigation is at rebound to gain access to
height sensor. Access may be improved by removing road
wheel. Carefully disconnect the height sensor link from the
upper suspension arm. Monitor the height sensor signal
voltage output for the height sensor under investigation.
Position the sensor arm so it is in the mid position and
confirm that the voltage is around 2.5 volts. Move the sensor
arm over the range ±40° around the mid position and confirm
that the voltage changes smoothly between around 0.2 volts
and 4.8 volts. If voltages are incorrect or do not change
smoothly then replace sensor. NOTE: For angles of movement
beyond ±40°, the sensor signal will clamp to a voltage of
~0.15v or ~4.85v, depending on position of sensor lever. This
is normal. When investigation is complete, refit height sensor
link to upper arm. If any fixings to the height sensor body or
mounting bracket were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Refer to the relevant section of the workshop
manual for the calibration procedure C1A04-22
Right Front
Height Sensor -
Signal amplitude
> maximum
Height sensor linkage
not connected
Height sensor or
bracket loose
Height sensor bracket
bent
Incorrect height
calibration
Height sensor linkage
toggled
Height sensor water
ingress
Wiring to height
Inspect for damage or loose fixings. NOTE If any height
sensor fixings were slackened or found to be loose or if a
height sensor was changed, the vehicle ride height MUST be
re-calibrated. Confirm that the correct height sensor part
number is fitted, as specified in the service parts database.
To check height sensor: Disconnect electrical connector to
height sensor and inspect connecter pins & terminals for
evidence of corrosion or water ingress. If no corrosion found,
disconnect harness at Control Module. A: Check for short
circuits between any of the 3 terminals and vehicle ground. B:
Check for electrical continuity between the two connectors for
each of the 3 terminals. Reconnect electrical connector at
Control Module only. C: Check voltages at terminals within www.JagDocs.com