2010 JAGUAR XFR Electrical

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 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.

TCM (transmission control module) 6 Diagnostic socket 7 Instrument cluster 8 JaguarDrive selector 9 Clockspring 10 Steering wheel audio switches 11 Downshift paddle switch 12 Upshift paddle switch 13 ECM (engine control module)


POWER FLOWS System Operation

Operation of the transmission is controlled by the TCM (transmission control module), which electrically activates various
solenoids to control the transmission gear selection. The sequence of solenoid activation is based on programmed information
in the TCM memory and physical transmission operating conditions such as vehicle speed, throttle position, engine load and JaguarDrive selector position.



Item Description 1 Torque input from engine 2 Torque converter lock-up clutch 3 Single web planetary gear carrier 4 Single web planetary gears 5 Single web sunwheel 1 6 Double web sunwheel 2 7 Double web planetary gears - long 8 Double web planetary gear carrier 9 Double web planetary gears - short 10 Double web sunwheel 3 11 Torque output from transmission A Multiplate clutch B Multiplate clutch C Multiplate brake D Multiplate brake E Multiplate clutch Engine torque is transferred, via operation of single or combinations of clutches to the 2 planetary gear trains. Both gear trains
are controlled by reactionary inputs from brake clutches to produce the 6 forward gears and 1 reverse gear. The ratios are as
follows: www.JagDocs.com

solenoid valve in the valve housing directs hydraulic pressure to the lock cylinder, which moves the piston within the cylinder
and releases the park lock pawl at the rear of the transmission by means of a connecting rod. The solenoid on the lock cylinder
is energized and locks the cylinder piston in the unlocked position. Additional locking of the piston is achieved with ball
catches within the lock cylinder.

When park is selected, the solenoid on the lock cylinder is de-energized, the ball catches are released and the piston is free to
move in the lock cylinder. The solenoid in the valve housing is also de-energized. The spring loaded parking disc pulls the
cylinder piston in the park direction which allows the park disc to move on its mounting. This movement is transferred via the
connecting rod to parking pawl, which is engaged in the park lock gear.

If an electrical failure occurs, the park lock can be manually released by means of an emergency park release lever located in
the floor console. The lever is connected to the parking disc by a cable and allows the park lock to be released manually. For
additional information, refer to 307-05B Automatic Transmission/Transaxle External Controls.

TRANSMISSION CONTROL MODULE

The TCM is an integral part of the Mechatronic valve block which is located at the bottom of the transmission, within the fluid pan. The TCM is the main controlling component of the transmission.
The TCM processes signals from the transmission speed and temperature sensors, ECM and other vehicle systems. From the received signal inputs and pre-programmed data, the module calculates the correct gear, torque converter clutch setting and
optimum pressure settings for gear shift and lock-up clutch control.

Visual Inspection

Mechanical Electrical Hydraulic
Damaged/stuck shift mechanism
Damaged automatic transmission casing
Blown fuse(s)
Damaged, loose or corroded connectors
Wiring harness
Fluid level too high/low
Poor condition of fluid
Fluid leak
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 diagnostic trouble codes (DTCs) and refer to the DTC Index.

DTC Index


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 control module/transmission 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/transmission.


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.


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


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 Cause Action P0121-86 Throttle/Pedal Position
Sensor A Circuit
Range/Performance - signal
invalid
Throttle/Pedal Position
Sensor Fault (Data
received over CAN Bus) Check Engine Control Module for stored DTCs P0219-86 Engine Overspeed Condition
- signal invalid
Engine speed too low or
too high (Data received
over CAN Bus) Check Engine Control Module for stored DTCs P0500-81
Vehicle Speed Sensor A -
invalid serial data received
Vehicle Speed Sensor
fault (Data received over
CAN Bus) Check DSC module for stored DTCs P0501-81 Vehicle Speed Sensor A
Vehicle Speed receive Check Anti-lock braking system module for stored Range/Performance invalid DTCs. Check correct Differential is installed to the serial data received over CAN Bus does not
vehicle match Transmission Output-Shaft speed P0561-1C
System Voltage Unstable -
Circuit voltage out of range
Power supply voltage out
of range when engine
running Check Engine control module for stored DTCs. Check
Charging System and Battery condition P0562-21
System Voltage Low - signal
amplitude < minimum
Circuit low voltage.
Battery supply voltage to
Transmission Control
Module (Transmission Refer to Circuit diagrams and check Power and Ground
Circuit for fault. Check Engine control module for
stored DTCs. Check Charging System and Battery
condition

DTC Description Possible Cause Action P061B-02
Internal Control Module Torque Calculation
Performance - general signal
failure
Transmission control
module - positive torque
signal not valid Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P061B-26
Internal Control Module Torque Calculation
Performance - signal rate of
change below threshold
Transmission control
module positive torque
signal not valid Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P062F-04
Internal Control Module
EEPROM Error - System
Internal Failures
EEPROM communication
error Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the top of the DTC Index P0642-21
Sensor Reference Voltage A
Circuit Low - signal
amplitude < minimum
Sensor supply voltage
fault low Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the top of the DTC Index P0643-22
Sensor Reference Voltage A
Circuit High - signal
amplitude > maximum
Sensor supply voltage
fault high Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the top of the DTC Index P0657-13
Actuator Supply Voltage A
Circuit / Open - Circuit Open
Actuator supply (pressure
control valves etc) Open
Circuit Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P0657-1C
Actuator Supply Voltage A
Circuit / Open - Circuit
voltage out of range
Actuator supply (pressure
control valves etc)
voltage plausibility fault Refer to electrical Circuit diagrams and check
Transmission control module connector for signs of
water ingress or damage, check pin 7 for Short to
Power or Ground (should NOT be connected and
harness terminal should have a bung fitted). If no
fault identified, suspect the Transmission control
module. Check and install a new Transmission control
module as required, refer to the new
module/component installation note at the top of the
DTC Index P0658-11
Actuator Supply Voltage A
Circuit Low - Circuit Short to
Ground
Actuator supply (pressure
control valves etc)
voltage Short to Ground Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P0659-12
Actuator Supply Voltage A
Circuit High - Circuit Short to
Battery
Actuator supply (pressure
control valves etc)
voltage Short to Power Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P0667-01 PCM / Engine control module / Transmission control
module Internal Temperature
Sensor A Range/Performance
- General Electrical Failure
General electrical failure Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P0667-04 PCM / Engine control module / Transmission control
module Internal Temperature
Sensor A Range/Performance
- System Internal Failures
Internal Electronic Failure Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P0667-49 PCM / Engine control module / Transmission control
module Internal Temperature
Sensor A Range/Performance
- internal electronic failure
Internal electronic failure Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P0700-02 Transmission Control System
(MIL Request) - General signal failure
General Signal failure Clear DTC, Road test and re-test, Read DTCs and
Investigate as required P0700-22 Transmission Control System
(MIL Request) - signal
amplitude > maximum
Double fault from
monitoring of internal
power supply and
pressure
regulator/solenoid
control software If any of the following DTCs are also present;
P074013, P096712, P273912, P273012, P272112,
P096312, P276312, P097112, suspect the Transmission
control module, check and install a new Transmission
control module as required, refer to the new
module/component installation note at the top of the
DTC Index P0700-75 Transmission Control System
(MIL Request) - Emergency
Position Not Reachable
Emergency Position Not
Reachable Clear DTC, Road test and re-test, Read DTCs and
investigate as required