2010 JAGUAR XFR check engine

Published: 03-Jun-2014
Evaporative Emissions - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Evaporative
Emissions
Diagnosis and Testing

Principles of Operation

For a detailed description of the Evaporative Emissions system, refer to the relevant Description and Operation section 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.
NOTES:


If a 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.


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with
an up-to-date 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.
1. Verify the customer concern

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

Visual Inspection
Mechanical Electrical
Fuel filler cap and seal
Fuel filler neck
Fuel pipes
Fuel tank
Evaporative emissions canister
Purge valve
Fuses
Wiring harnesses and connectors
Engine Control Module (ECM)
Purge valve
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

5. 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
Symptom Chart

Symptom Possible Causes Action Difficulty in filling
fuel tank
Restriction in the vapour line between the fuel tank and the
carbon canister outlet/atmospheric port
Check for
restrictions/damage Fuel smell
System leak
Purge valve inoperative
Check for leaks
Check the purge valve
operation DTC Index

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00.

the period of rich to lean and lean to rich switching monitors the response rate of the upstream sensors.

Diagnosis of electrical faults is continually monitored in both the upstream and downstream sensors. This is achieved by
checking the signal against maximum and minimum threshold, for open and short circuit conditions.
If a heated oxygen sensor fails:

The ECM defaults to open loop fueling for the related cylinder bank The CO (carbon monoxide) and emissions content of the exhaust gases increases
The exhaust smells of rotten eggs (hydrogen sulphide).
With a failed heated oxygen sensor, the engine will suffer from unstable operation and reduced performance.

ACCELERATOR PEDAL POSITION SENSOR



The APP sensor allows the ECM to determine the driver requests for vehicle speed, acceleration and deceleration. The ECM uses this information to determine the setting of the electronic throttle.

The APP sensor is installed on the pedal box and secured with three screws. A six pin electrical connector provides the interface with the vehicle harness. The accelerator pedal is connected to a spindle on the RH side of the APP sensor.
The APP sensor is a twin track potentiometer. Each track receives an independent power supply from the ECM and returns an independent analog signal to the ECM. Both signals contain the same positional information, but the signal from track 2 is half the voltage of the signal from track1 at all positions.
If both signals have a fault, the ECM adopts a limp home mode, which limits the engine speed to 2000 rev/min maximum. The ECM constantly checks the range and plausibility of the two signals and stores a fault code if it detects a fault. www.JagDocs.com

Published: 16-Sep-2013
Electronic Engine Controls - V8 S/C 5.0L Petrol - Electronic Engine Controls
Diagnosis and Testing

Principle of Operation

For a detailed description of electronic engine controls, refer to the relevant Description and Operation section of the workshop
manual. REFER to: (303-14D Electronic Engine Controls - V8 S/C 5.0L Petrol)

Electronic Engine Controls (Description and Operation), Electronic Engine Controls (Description and Operation), Electronic Engine Controls (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
Engine oil level and condition
Cooling system coolant level
Fuel level
Fuel contamination/grade/quality
Throttle body
Front End Accessory Drive (FEAD) belt
Air cleaner condition
Fuses
Wiring harness
Electrical connector(s)
Sensor(s)
Engine Control Module
Transmission Control Module
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 customer concern and refer to the Symptom Chart below, alternatively,
check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.
Symptom Chart

Symptom Possible Cause Action Engine non-start Engine does not crank
Security system /Immobilizer
engaged
Engine in shut-down mode
ECM relay
Battery
Starting system
Engine seized
Check that the security system is disarmed
Read DTCs and refer to DTC Index in this
section for ECM relay tests
Ensure the battery is in fully charged and
serviceable condition
For starting system tests refer to the
relevant section of the workshop manual
For engine system tests refer to the relevant
section of the workshop manual Engine cranks, but does not fire
Engine breather system
disconnected/restricted
Ignition system
Fuel system
Electronic engine controls
Ensure the engine breather system is free
from restriction and is correctly installed
For ignition system tests refer to the
relevant section of the workshop manual
For fuel system tests refer to the relevant
section of the workshop manual
Read DTCs and refer to DTC Index in this
section for electronic engine control tests Engine cranks and fires, but will not
start
Evaporative emissions purge
valve
Fuel pump
Spark plugs
Ignition coil failure(s)
For purge valve tests refer to the relevant
section of the workshop manual
For fuel system tests refer to the relevant
section of the workshop manual
For ignition system tests refer to the
relevant section of the workshop manual Difficult to start Difficult cold start
Check engine coolant
level/anti-freeze content
Battery
Electronic engine controls
Exhaust gas recirculation
Check the engine coolant level and
condition. Refer to the relevant sections of
the workshop manual
Ensure the battery is in a fully charged and
serviceable condition. Refer to the battery

Symptom Possible Cause Action (EGR) valve stuck open
Fuel pump
Evaporative emissions purge
valve care manual and the relevant sections of the
workshop manual.
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the relevant section of the
workshop manual and check the Exhaust Gas
Recirculation (EGR) valve and associated
hoses and connections.
For fuel system tests refer to the relevant
section of the workshop manual
Refer to the relevant section of the
workshop manual and check the purge valve
and associated hoses and connections. Difficult hot start
Injector leak
Electronic engine controls
Evaporative emissions purge
valve
Fuel pump
Ignition system
EGR valve stuck open
Refer to the relevant section of the
workshop manual, carry out injector leak
tests, install new injectors as necessary.
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the relevant section of the
workshop manual and check the purge valve
and associated hoses and connections.
For fuel system tests refer to the relevant
section of the workshop manual
For ignition system tests refer to the
relevant section of the workshop manual
Refer to the relevant section of the
workshop manual and check the Exhaust Gas
Recirculation (EGR) valve and associated
hoses and connections. Difficult to start after hot soak
(vehicle standing, engine off, after
engine has reached operating
temperature)
Injector leak
Electronic engine controls
Evaporative emissions purge
valve
Fuel pump
Ignition system
EGR valve stuck open
Refer to the relevant section of the
workshop manual, carry out injector leak
tests, install new injectors as necessary.
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the relevant section of the
workshop manual and check the purge valve
and associated hoses and connections.
For fuel system tests refer to the relevant
section of the workshop manual
For ignition system tests refer to the
relevant section of the workshop manual
Refer to the relevant section of the
workshop manual and check the Exhaust Gas
Recirculation (EGR) valve and associated
hoses and connections. Engine cranks too fast/slow
Compressions high/low
Battery
Starting system
Refer to the relevant section of the
workshop manual, carry out compression
tests.
Ensure the battery is in a fully charged and
serviceable condition. Refer to the battery
care manual and the relevant sections of the
workshop manual.
For starting system tests refer to the
relevant section of the workshop manual Engine stalls Engine stalls soon after start
Breather system
disconnected/restricted
ECM relay
Electronic engine controls
Ignition system
Air intake system restricted
Air leakage
Fuel lines
Ensure the engine breather system is free
from restriction and is correctly installed
Read DTCs and refer to DTC Index in this
section for ECM relay tests
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
For ignition system tests refer to the
relevant section of the workshop manual
Check for blockage in air cleaner element
and air intake system
Check for leakage in air intake system
For fuel system tests refer to the relevant
section of the workshop manual

Symptom Possible Cause Action Engine stalls on overrun
ECM relay
Throttle position (TP)
sensors
Read DTCs and refer to DTC Index in this
section for ECM relay and TP sensor tests Engine stalls at steady speed
ECM relay
crankshaft position sensor
TP sensors
Read DTCs and refer to DTC Index in this
section for ECM relay, crankshaft position
sensor, and TP sensor tests Engine stalls with speed control
enabled
ECM relay
Read DTCs and refer to DTC Index in this
section for ECM relay tests Engine stalls when manoeuvring
ECM relay
TP sensors
Additional engine loads
(PAS, air conditioning, etc)
Transmission malfunction
CAN malfunction
Read DTCs and refer to DTC Index in this
section for ECM relay, and TP sensor tests
Check for excessive loads being placed on
the engine from PAS, air conditioning
systems etc.
Refer to the workshop manual or
transmission troubleshooting guide for
transmission system tests.
Refer to the relevant section of the
workshop manual and the electrical wiring
diagrams to perform CAN network tests. Poor driveability Engine hesitates/poor acceleration
Fuel pressure, fuel pump,
fuel lines
Injector leak
Air leakage
Electronic engine controls
Ignition system
EGR valve stuck
Transmission malfunction
Restricted pedal travel
(carpet, etc)
For fuel system tests refer to the relevant
section of the workshop manual
Carry out fuel injector leak tests, install new
injectors as necessary.
Check for leakage from air intake system
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
For ignition system tests refer to the
relevant section of the workshop manual
Refer to the relevant section of the
workshop manual and check the Exhaust Gas
Recirculation (EGR) valve and associated
hoses and connections.
Refer to the workshop manual or
transmission troubleshooting guide for
transmission system tests.
Ensure accelerator pedal is free from
restriction Engine backfires
Fuel pump, fuel lines
Air leakage
Electronic engine controls
Ignition system
Sticking variable camshaft
timing (VCT) hub
For fuel system tests refer to the relevant
section of the workshop manual
Check for leakage from air intake system
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
For ignition system tests refer to the
relevant section of the workshop manual
Read DTCs and refer to DTC Index in this
section for VCT system tests Engine surges
Fuel pump, fuel lines
Electronic engine controls
Ignition system
For fuel system tests refer to the relevant
section of the workshop manual
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
For ignition system tests refer to the
relevant section of the workshop manual Engine detonates/knocks
Electronic engine controls
Fuel pump, fuel lines, fuel
quality
Air leakage
Sticking VCT hub
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
For fuel system tests refer to the relevant
section of the workshop manual
Check for leakage from air intake system
Read DTCs and refer to DTC Index in this
section for VCT system tests www.JagDocs.com

Symptom Possible Cause Action No throttle response
Electronic engine controls
Read DTCs and refer to DTC Index in this
section for electronic engine control tests Speed control inhibited or disabled
Default mode enabled
Speed control, brake switch
Electronic engine controls
CAN fault
Check message center for default message,
read DTCs and refer to DTC Index
Refer to the relevant section of the
workshop manual for speed control, and
brake switch tests.
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the relevant section of the
workshop manual and the electrical wiring
diagrams to perform CAN network tests. Poor throttle response
Breather system
disconnected/restricted
Electronic engine controls
Transmission malfunction
Traction control event
Air leakage
Ensure engine breather system is free from
restriction and is correctly installed
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the workshop manual or
transmission troubleshooting guide for
transmission system tests.
Check for leakage in air intake system Engine defaults, warning light and
messages. Refer to the owner
handbook
Electronic engine controls
Read DTCs and refer to DTC Index in this
section for electronic engine control tests DTC Index


WARNING: Fuel injector voltage will reach 65Volts during operation and have a high current requirement.


CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part
number 3548-1358-00.
NOTES:


If the module/component 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 module/component.


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


When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal
places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads
into account.


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


If DTCs 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.

DTC Description Possible Causes Action B10A2-31 Crash Input - No signal
Loss of communication between
Restraints Control Module (RCM)
and Engine Control Module
(ECM) Refer to the electrical circuit diagrams and
check Restraints Control Module (RCM) Pulse
Width Modulated (PWM) SRS signal line circuit,
hard wired connection between Engine Control
Module (ECM) and Restraints Control Module
(RCM) for short to ground, short to power, open
circuit. Repair circuit as required, clear DTC and
retest system to confirm repair.

DTC Description Possible Causes Action B10AC-81
Cruise Control Switch -
invalid serial data received
The Engine Control Module
(ECM) has received an invalid
command from the steering
wheel switch pack Clear the DTC and press all the steering wheel
switches, re-check for DTCs. Refer to the
electrical circuit diagrams and check the Cruise
control switch circuit for open circuit, short to
power, short to ground, disconnected. Check
and install a new Steering Wheel Module (SWM) as required. B10AC-82 Cruise Control Switch - alive / sequence counter incorrect / not updated
Cruise Buttons alive counter is
not incrementing. Which
suggests that the LIN bus is
faulty
Steering Wheel Module (SWM) is
not connected
Steering Wheel Module (SWM)
failure Refer to the electrical circuit diagrams and
check the Cruise control switch circuit for open
circuit, short to power, short to ground,
disconnected. Check and install a new Steering
Wheel Module (SWM) as required. B10AC-83
Cruise Control Switch - value
of signal protection
calculation incorrect
Cruise buttons checksum
incorrect, incorrect cruise
switches fitted to vehicle Check and install new cruise switches as
required. B10AC-96
Cruise Control Switch -
component internal failure
Cruise control switch circuit,
open circuit, short to power,
short to ground, disconnected
Cruise Control Switch failure
Steering Wheel Module (SWM)
failure Check for related DTCs in other Central
Junction Box (CJB)s. Refer to the electrical
circuit diagrams and check the Cruise control
switch circuit for open circuit, short to power,
short to ground, disconnected. Check and
install a new cruise control switch as required.
Check and install a new Steering Wheel
Module (SWM) as required. B10FF-68
Ignition Control - Event
information
Spark plug(s) fault
Wiring harness fault
Ignition coil(s) fault Refer to repair manual and check spark plug(s)
for condition and security. Replace any
defective components as required. Refer to
electrical wiring diagrams and check ignition
coil circuit for intermittent open circuit, short
to power, short to ground. Check and install a
new coil(s) as required. B11DB-01
Battery Monitoring Module -
General Electrical Failure
Charging system fault Battery
monitoring signal line
circuit fault
Vehicle battery fault Refer to electrical wiring diagrams and check
charging system for faults. Perform any repairs
required. Refer to the electrical wiring
diagrams and check the Battery Monitoring
System (BMS) module circuit for open circuit,
short to ground, short to power. Refer to the
battery care manual and check and install a
new battery. B11DB-87
Battery Monitoring Module -
missing message
Battery signal line circuit fault Refer to the electrical wiring diagrams and
check the Battery Monitoring System (BMS)
module circuit for open circuit, short to ground,
short to power. B1206-68
Crash Occurred - event
information
Engine control Module (ECM) has
detected the vehicle has crashed
- event information DTC only Refer to the electrical circuit diagrams and
check the Engine Control Module (ECM) to
Restraints Control Module (RCM) circuit for
short to ground, short to power, open circuit.
Repair circuit as required, clear DTC and retest
system to confirm repair. C0031-00
Left Front Wheel Speed
Sensor - No sub type
information
Invalid data received from
Anti-lock Braking System (ABS)
module - left front wheel speed
signal fault Check Anti-lock Braking System (ABS) module
for related DTCs and refer to relevant DTC
Index. C0034-00
Right Front Wheel Speed
Sensor - No sub type
information
Invalid data received from
Anti-lock Braking System (ABS)
module - right front wheel speed
signal fault Check Anti-lock Braking System (ABS) module
for related DTCs and refer to relevant DTC
Index. C0037-00
Left Rear Wheel Speed
Sensor - No sub type
information
Invalid data received from
Anti-lock Braking System (ABS)
module - left rear wheel speed
signal fault Check Anti-lock Braking System (ABS) module
for related DTCs and refer to relevant DTC
Index. C003A-00
Right Rear Wheel Speed
Sensor - No sub type
information
Invalid data received from
Anti-lock Braking System (ABS)
module - right rear wheel speed
signal fault Check Anti-lock Braking System (ABS) module
for related DTCs and refer to relevant DTC
Index.

Published: 11-May-2011
Electronic Engine Controls - V8 S/C 5.0L Petrol - Powertrain Control Module
(PCM) Long Drive Cycle Self-Test
General Procedures


WARNING: Where possible, all road tests should be on well surfaced and dry roads. Always comply with speed limits and
local traffic regulations.
NOTES:


This procedure is an overcheck only. If fault codes are found, interrogation of the relevant system must be carried out and
claimed against.


The vehicle must exceed 50mph (80 km/h) during the road test.

1. Connect the diagnostic equipment to the vehicle.

2. Follow on screen prompts and check for engine management fault codes.

3. Clear the fault codes following the on screen procedure.

4. Disconnect the diagnostic equipment from the vehicle.


5. NOTE: Make sure cruise control is not engaged. Make sure
the engine temperature is above 60 ºC (140 ºF).
Carry out a road test and perform the following operations.
1. Accelerate to 55 mph (88 km/h) in 5th gear and cruise for 2
minutes with the engine speed at or above 1800rpm.
2. Lift off the throttle and allow the vehicle to decelerate until the
engine speed is less than 1000 rpm.
3. Stop the vehicle.
4. Release brake, allow the vehicle to move with no throttle for 1
minute.
5. Road test is now complete.

6. Connect the diagnostic equipment to the vehicle.


7. NOTE: If fault codes are found, interrogation of the relevant
system must be carried out and claimed against.
Follow on screen prompts and check for engine management fault codes.

8. Disconnect the diagnostic equipment from the vehicle.