2010 JAGUAR XFR fuse

Published: 09-Jul-2014
Anti-Lock Control - Stability Assist - Anti-Lock Control - Stability Assist
Diagnosis and Testing

Principle of Operation

For a detailed description of the Anti-Lock Control - Stability Assist system, refer to the relevant Description and Operation
sections in the workshop manual. REFER to: (206-09 Anti-Lock Control - Stability Assist)

Anti-Lock Control - Stability Assist (Description and Operation), Anti-Lock Control - Stability Assist (Description and Operation), Anti-Lock Control - Stability Assist (Description and Operation).
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. Confirm if the Anti-Lock Brake System (ABS) warning light was illuminated, or still is.

NOTE: An intermittent fault may allow the warning light to go off. This does not necessarily mean the fault is not
present. Some warnings will appear to clear when the ignition is cycled. This is often because the warning has flagged as a
result of one of the vehicle's on-board diagnostic routines having run to detect the fault. If the same routine is not run when
the ignition status is set to ON, the warning will not re-flag until the routine does run.
3. Visually inspect for obvious signs of damage and system integrity.

Visual Inspection
Mechanical Electrical
Brake fluid level
Vacuum system
Wheel speed sensor installation
Wheel speed sensor air gap
Magnetic pulse wheel(s) (damaged/contaminated)
Steering angle sensor
Yaw rate sensor and accelerometer cluster installation
Incorrect wheel or tire size
Warning light operation
Fuses
Wheel speed sensors
Connectors/Pins
Harnesses
Steering wheel rotation sensor
Yaw rate sensor and accelerometer cluster
Booster pressure sensor
Hydraulic Control Unit (HCU)
4. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.
5. If the cause is not visually evident check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

DTC Index

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00.
REFER to: Diagnostic Trouble Code (DTC) Index - DTC: Anti-Lock Braking System (ABS) (100-00 General Information, Description and Operation).

Steering System - General Information - Steering System
Diagnosis and Testing

Principle of Operation Published: 11-May-2011

For a detailed description of the steering system operation, refer to the relevant Description and Operation sections of the
workshop manual. REFER to:

Power Steering (211-02 Power Steering, Description and Operation), Power Steering (211-02 Power Steering, Description and Operation), Power Steering (211-02 Power Steering, Description and Operation), Steering Linkage (211-03 Steering Linkage, Description and Operation), Steering Linkage (211-03 Steering Linkage, Description and Operation), Steering Linkage (211-03 Steering Linkage, Description and Operation), Steering Column (211-04 Steering Column, Description and Operation), Steering Column (211-04 Steering Column, Description and Operation), Steering Column (211-04 Steering Column, Description and Operation), Steering Column Switches (211-05 Steering Column Switches, Description and Operation), Steering Column Switches (211-05 Steering Column Switches, Description and Operation), Steering Column Switches (211-05 Steering Column Switches, Description and Operation).
Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of damage and system integrity.

Visual Inspection
Mechanical Electrical
Tire condition/pressure
Fluid level
Leaks
Security, condition and correct installation of suspension components
Security, condition and correct installation of steering system components
Fuses
Harnesses for damage/corrosion
Electrical connector(s)
Damaged/corroded pins
CAUTION: If a steering gear assembly is returned under warranty with leaking output shaft seals, but there is also
damage to the steering gear boot/boots the steering gear warranty will be invalid. This is due to the steering gear output
shaft seals being damaged due to foreign materials entering the steering gear boot and damaging the steering gear output
shaft seals thereafter.

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 concern is not visually evident, verify the symptom and refer to the symptom chart.

Symptom Charts


WARNING: It is not possible to CHECK the torque of a patchlock bolt, if the torque is suspected to be low, the bolt must
be REMOVED/DISCARDED and a new bolt MUST be INSTALLED and torque to the correct value.


NOTE: If the module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to
the installation of a new module/component.

Fluid Leakage


NOTE: Confirm the location of the fluid leak. CLEAN the area of the leak, inspect the area and confirm the exact position.
Ensure the fluid is not from another system on the vehicle.

Symptom Possible Causes Action

Power steering
fluid leakage
Overfilled system
Correct the fluid level as required
Steering gear
Check and install new steering gear as required, refer to the new
module/component installation note at the top of the Symptom
Charts

Symptom Possible Causes Action

Wear in steering gear tie-rod end ball joints
Check and install new tie-rod
ends as required, refer to the
new module/component
installation note at the top of
the Symptom Charts
NOTE: Inner ball joint wear is rare. The steering
gear installed to all Jaguar vehicles has a spring
loaded pinion to ensure the correct level of
engagement between the rack and pinion. This play
is optimized with the steering gear in the central
position and should not be confused with inner ball
joint wear. Check for vertical motion in the inner ball
joint with the steering gear in the central position.
Wear in steering gear inner ball joints


Check and install new steering
gear as required, refer to the
new module/component
installation note at the top of
the Symptom Charts
Wear in suspension ball joints/bushings
Check and install new
components as required















Veer under braking




Steering gear not correctly adjusted
CAUTION: DO NOT attempt to
adjust the steering gear yoke. Failure to
follow this instruction will invalidate the
steering gear warranty

Check and install a new steering
gear as required, refer to the
new module/component
installation note at the top of
the Symptom Charts


Contamination of brake pads and discs
Check and rectify the source of
the contamination and install
new brake pads and discs as
required, refer to the new
module/component installation
note at the top of the Symptom
Charts




Seized front brake caliper slide pins or piston
Damaged brake discs
Check and rectify sticking slide
pins and install new calipers as
required, refer to the new
module/component installation
note at the top of the Symptom
Charts
Check and install new brake discs
as required, refer to the new
module/component installation
note at the top of the Symptom
Charts








Vehicle pulls to one side
when driving on a level
surface




Uneven tire wear
Incorrect tire pressure
For information on diagnosis of
uneven tire wear.
REFER to: Suspension System (204-00 Suspension System -
General Information, Diagnosis
and Testing).
Check and adjust tire pressures
as required.
REFER to: Specifications (204-04 Wheels and Tires,
Specifications).


Incorrect geometry settings
NOTE: Dealerships must keep a
copy of the BEFORE and AFTER
geometry figures with job card for future
reference

Check and adjust geometry as
required. REFER to: (204-00

Published: 20-May-2014
Steering Column - Steering Column - System Operation and Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired; D = High speed CAN bus; N = Medium speed CAN bus



Item Description 1 Battery 2 BJB (battery junction box) - Megafuse (175A) 3 RJB (rear junction box) 4 Electric steering column lock 5 High Speed CAN (controller area network) bus to other vehicle systems 6 CJB (central junction box)

8 Reach adjustment solenoid and potentiometer 9 Column adjustment motor 10 Instrument cluster 11 Steering column adjust switch 12 Driver's seat module (position memory)


STEERING COLUMN ADJUSTMENT System Operation

Power for the column adjustment motor is supplied via a megafuse in the BJB to the CJB. A fused supply from the CJB is passed to the instrument cluster which controls the power application to the motor.

The column adjust switch is hardwired to the instrument cluster. Up/down and in/out selections on the switch are each passed
through a resistor of differing values to the instrument cluster. The cluster monitors the output value from the switch and
operates the motor in the required direction and simultaneously energizes the required solenoid for rake or reach adjustment.
When the applicable solenoid is energized, a clutch is engaged and locates on a lead screw. The motor rotates the lead screw
and the rotational drive of the screw is transferred into linear movement of the applicable clutch to move either the rake or
reach adjustment. For reach adjustment, the lead screw drives the outer housing in or out as required. For rake adjustment the
lead screw drives a rake lever which moves the column up or down as required.

The position of the column is monitored by potentiometers which are connected to the instrument cluster. The cluster monitors
the output signal from the potentiometers to precisely control the positioning of the column in each plane.

The instrument cluster controls the memory positioning of the column via a medium speed CAN bus connection to the driver's seat module. The driver's seat module receives information regarding the particular remote handset used to enter the vehicle
and outputs positional information relative to that stored for the handset. This information is passed to the instrument cluster
via the medium speed CAN bus which moves the column to the memorized positions.
The column logic in the instrument cluster also incorporates an entry/exit mode. When the vehicle is unlocked or the ignition is
switched off, the instrument cluster lifts the column upwards to its maximum rake position to allow the driver more room below
the steering wheel and improve access/egress of the vehicle. When the ignition is next switched on the column will adjust to
its previous position.
The electric steering column lock is controlled by the CJB.

Steering Column Switches - Steering Column Switches
Diagnosis and Testing

Principle of Operation Published: 14-Jul-2014

For a detailed description of the steering column lock and switches, refer to the relevant Description and Operation section in
the workshop manual. REFER to: (211-05 Steering Column Switches)

Steering Column Switches (Description and Operation), Steering Column Switches (Description and Operation), Steering Column Switches (Description and Operation).
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
Switches
Steering column lock
Fuse(s)
Electrical connector(s)
Wiring Harness
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, check for DTCs and refer to the DTC Index.

DTC Index

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00.
REFER to: Diagnostic Trouble Code (DTC) Index - DTC: Central Junction Box (CJB) (100-00 General Information, Description and Operation).

Engine System - General Information - Engine 5.0L
Diagnosis and Testing

Special Tool(s)


Oil pressure testing adaptor, 303-1451

Oil pressure testing gauge, 303-871 Principle of Operation Published: 11-May-2011

For a detailed description of the 5.0L engine, refer to the relevant Description and Operation sections in the workshop manual.
REFER to:

Engine (303-01C Engine - V8 5.0L Petrol, Description and Operation), Engine (303-01C Engine - V8 5.0L Petrol, Description and Operation), Engine (303-01C Engine - V8 5.0L Petrol, Description and Operation), Engine (303-01D Engine - V8 S/C 5.0L Petrol, Description and Operation), Engine (303-01D Engine - V8 S/C 5.0L Petrol, Description and Operation), Engine (303-01D Engine - V8 S/C 5.0L Petrol, Description and Operation).
Inspection and Verification

1. Verify the customer concern.
2. Visually inspect for obvious signs of damage and system integrity.
Visual Inspection
Mechanical Electrical Coolant leaks
Oil leaks
Leaks in the fuel system
Visibly damaged or worn parts
Loose or missing fixings Fuses
Loose or corroded electrical connectors
Harnesses
Sensors
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 concern is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the relevant DTC Index.
Symptom Chart

NOTES:


If an engine is suspect, and the vehicle remains under the Manufacturers warranty refer to the Warranty Policy and
Procedure manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a
new engine.


Due to the possibility of loose carbon, that has become trapped between the valve face and seat, effecting the pressure
readings, when carrying out a compression test and some cylinders are found to have low pressures, install the spark plugs,
road test the vehicle and re-test the suspect cylinders. If the correct pressures are restored, no further action is required. www.JagDocs.com

Component Tests
Engine Oil Leaks


NOTE: Before installing new gaskets or oil seals, make sure that the fault is clearly established.

If the oil leak cannot be identified clearly by a visual inspection, carry out an Ultraviolet test:

Fluorescent Oil Additive Method

1. Clean the engine with a suitable cleaning fluid (brake cleaner).

2. Drain the engine oil and refill with recommended oil, premixed with Diesel Engine Oil Dye or equivalent. Use a minimum
14.8 ml (0.5 ounce) to a maximum 29.6 ml (1 ounce) of fluorescent additive to all engines. If oil is not premixed,
fluorescent additive must first be added to the crankcase.

3. Run engine for 15 minutes. Stop the engine and inspect all seal and gasket areas for leaks using a 12 Volt Master UV
Diagnostic Inspection Kit or equivalent. A clear bright yellow or orange area will identify leak. For extremely small
leaks, several hours may be required for the leak to appear.

4. As necessary, pressurize the main oil gallery system to locate leaks due to incorrectly sealed, loose or cocked plugs. If
the flywheel bolts leak oil, look for sealer on the threads.
5. Repair all leaks as necessary.

Compression Test General Remarks
NOTES:

Removing fuses and disconnecting electrical components may cause the Engine Control Module (ECM) to log Diagnostic
Trouble Codes (DTCs). After the measurements have been carried out, DTCs should be cleared from memory by connecting to
the Manufacturer Approved Diagnostic System.


Only check the compression pressure with the valves set to the prescribed clearance (if this can be adjusted).
The compression pressure should be checked with the engine at normal operating temperature.

Check the Compression Pressure


WARNING: Move gear selector lever to 'P' position. Failure to follow this instruction may result in personal injury.
1. Remove the fuel pump relay.

2. Start the engine - the engine will start, run for a few seconds then stall.

3. Remove the spark plugs.
4. Install the compression tester.

5. Install an auxiliary starter switch in the starting circuit. With the ignition switch OFF, using the auxiliary starter switch,
crank the engine a minimum of five compression strokes and record the highest reading. Note the approximate number
of compression strokes required to obtain the highest reading.
6. Repeat the test on each cylinder, cranking the engine approximately the same number of compression strokes.
7. Install the removed components in reverse order, observing the specified tightening torques.

8. Clear all DTCs from the ECM.
Interpretation of the Results


NOTE: Due to the possibility of loose carbon that has become trapped between the valve face and seat effecting the
pressure readings, when carrying out a compression test and cylinders are found to have low pressures, install the spark plugs,
road test the vehicle and re-test the suspect cylinders. If the correct pressures are restored, no further action is required.

The indicated compression pressures are considered within specification if the lowest reading cylinder is within 75% of the
highest reading.

If the cylinder pressures are found to be low, carry out a leakdown test to determine the location of the fault (if any leakback
can be heard through the engine breather system suspect the piston rings, if any leakback can be heard through the inlet
system suspect the inlet valve or seat, if any leakback can be heard through the exhaust manifold suspect the exhaust valve
or seat. If the measurements for two cylinders next to each other are both too low then it is very likely that the cylinder head
gasket between them is burnt through. This can also be recognized by traces of engine oil in the coolant and/or coolant in the