2010 JAGUAR XFR turn signal

DTC Description Possible Causes Action the warranty policy and procedures manual if a
module/component is suspect. P0712-11 Transmission Fluid Temperature Sensor A
Circuit Low - Circuit Short
to Ground
Transmission fluid
temperature sensor
Circuit Short to Ground
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0713-01 Transmission Fluid Temperature Sensor A
Circuit High - General
Electrical Failure
General electrical failure
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0713-12 Transmission Fluid Temperature Sensor A
Circuit High - Circuit
Short to Battery
Transmission fluid
temperature sensor
Circuit Short to Power
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0716-14 Turbine/Input Shaft
Speed Sensor A Circuit
Range/Performance -
Circuit Short to Ground or
Open
Turbine/Input Shaft
Speed Sensor Circuit
Short to Ground or Open
Circuit
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0716-21 Turbine/Input Shaft
Speed Sensor A Circuit
Range/Performance -
Signal amplitude <
minimum
Turbine/Input Shaft
Speed Sensor signal too
small
Clear DTC and road test, if DTC returns suspect
the Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0716-22 Turbine/Input Shaft
Speed Sensor A Circuit
Range/Performance -
Signal amplitude >
maximum
Turbine/Input Shaft
Speed Sensor signal
above maximum
Clear DTC and road test, if DTC returns suspect
the Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0717-12 Turbine/Input Shaft
Speed Sensor A Circuit
No Signal - Circuit Short
to Battery
Turbine/input shaft speed
sensor A Circuit Short to
Power
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0720-12
Output Shaft Speed
Sensor Circuit - Circuit
Short to Battery
Transmission output
shaft speed sensor
Circuit Short to Power
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0720-14
Output Shaft Speed
Sensor Circuit - Circuit
Short to Ground or Open
Transmission output
shaft speed sensor
Circuit Short to Ground or
Open Circuit
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0721-22
Output Shaft Speed
Sensor Circuit
Range/Performance -
Signal amplitude >
maximum
Transmission output
shaft speed sensor signal
above maximum
Clear DTC and road test, if DTC returns suspect
the Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0721-27
Output Shaft Speed
Sensor Circuit
Range/Performance -
Signal rate of change
above threshold
Output shaft speed
negative gradient too
high
Clear DTC and road test, if DTC returns suspect
the Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect.

DTC Description Possible Causes Action P0829-77
6-5 Shift - Commanded
Position Not Reachable
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P084F-01
Park / Neutral Switch
Input Circuit - General
Electrical Failure
Wrong voltage level
detected on Park/No Park
signal
Check for correct output at Transmission Control
Module park signal pin (check in all positions) 12
volts in Park, 0 volts in all other positions. If fault
identified, suspect the Transmission Control
Module. Install a new Transmission Control Module
as required, refer to the warranty policy and
procedures manual if a module/component is
suspect. If no fault identified, check Park signal
circuit to Transmission Shift Module for short, open
circuit P0850-01
Park / Neutral Switch
Input Circuit - General
Electrical Failure
General electrical failure
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0850-02
Park / Neutral Switch
Input Circuit - General
signal failure
General signal failure
Check Parklock mechanism, If Parklock operation
correct suspect the Transmission Control Module.
Install a new Transmission Control Module as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0850-29
Park / Neutral Switch
Input Circuit - Signal
invalid
Signal Invalid
Check Parklock mechanism, If Parklock operation
correct suspect the Transmission Control Module.
Install a new Transmission Control Module as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0850-1C
Park / Neutral Switch
Input Circuit - Circuit
voltage out of range
Circuit voltage out of
range
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0919-93
Gear Shift Position
Control Error - No
operation
No shifting despite driver
request
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0919-94
Gear Shift Position
Control Error -
Unexpected operation
Shifting without driver
request
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0938-29
Hydraulic Oil Temperature
Sensor
Range/Performance -
Signal invalid
Transmission fluid
temperature compared
with module temperature
fault
Clear DTC. Carry out cold start road test, continue
driving vehicle until normal operating temperature
is achieved. Read DTCs, if DTC returns, suspect
the Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0963-12
Pressure Control Solenoid
A Control Circuit High -
Circuit Short to Battery
Pressure control solenoid
1 Circuit Short to Power
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0964-13
Pressure Control Solenoid
B Control Circuit / Open -
Circuit Open
Pressure Control Solenoid
B Control Circuit Open
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual

7 Initiators 8 TPMS module 9 Instrument cluster


Tire Pressure Monitoring System (TPMS) System Operation

The controlling software for the Tire Pressure Monitoring System (TPMS) is located within a Tire Pressure Monitoring System
Module. The software detects the following:

When the tire pressure is below the recommended low pressure value - under inflated tire.
The location of the tire on the vehicle that is below the recommended pressure.
Malfunction warning.

The TPMS system comprises:

Tire pressure monitoring system module located below the right-hand front seat.
Tire pressure receiver located near the gear shifter within the floor console.
Two front initiators positioned forward of the wheels and behind the fender splash shields.
Two rear initiators positioned rearward of the wheels and assembled on dedicated brackets located behind the fender
splash shields.
Four sensors, each sensor is integral with a tire valve and located within the tire; the space saver spare wheel is not
fitted with a sensor.

The four initiators are hard wired to the TPMS module. The initiators transmit 125 KHz Low Frequency (LF) signals to the tire
pressure sensors which respond by modifying the mode status within the Radio Frequency (RF) transmission. The 315 or 433
MHz RF signals are detected by the tire pressure receiver which is connected directly to the TPMS module. The received RF
signals from the tire pressure sensors are passed to the TPMS module and contain identification, pressure, temperature and
acceleration information for each wheel and tire.

The TPMS module communicates with the instrument cluster via the medium speed CAN bus to provide the driver with
appropriate warnings. The TPMS module also indicates status or failure of the TPMS or components.

Tire Location and Identification

The TPMS can identify the position of the wheels on the vehicle and assign a received tire pressure sensor identification to a
specific position on the vehicle, for example front left, front right, rear left and rear right. This feature is required because of
the different pressure targets and threshold that could exist between the front and rear tires.

The wheel location is performed automatically by the TPMS module using an 'auto-location' function. This function is fully
automatic and requires no input from the driver. The TPMS module automatically re-learns the position of the wheels on the
vehicle if the tire pressure sensors are replaced or the wheel positions on the vehicle are changed.
The TPMS software can automatically detect, under all operating conditions, the following:
one or more new tire pressure sensors have been fitted
one or more tire pressure sensors have stopped transmitting
TPMS module can reject identifications from tire pressure sensors which do not belong to the vehicle
two 'running' wheels on the vehicle have changed positions.

If a new tire pressure sensor is fitted on any 'running' wheel, the module can learn the new sensor identification automatically
through the tire learn and location process.

The tire-learn and location process is ready to commence when the vehicle has been stationary or traveling at less than 12
mph (20 km/h) for 15 minutes. This is known as 'parking mode'. The learn/locate process requires the vehicle to be driven at
speeds of more than 12 mph (20 km/h) for 15 minutes. If the vehicle speed reduces to below 12 mph (20 km/h), the learn
process timer is suspended until the vehicle speed increases to more than 12 mph (20 km/h), after which time the timer is
resumed. If the vehicle speed remains below 12 mph (20 km/h) for more than 15 minutes, the timer is set to zero and process
starts again.

Low Pressure Monitoring

The tire low pressure sensor transmits by RF (315 MHz or 433 MHz depending on market) signal. These signals contain data
which corresponds to tire low pressure sensor identification, tire pressure, tire temperature, acceleration and tire low pressure
sensor mode.

Each time the vehicle is driven, the tire pressure monitoring system module activates each LF antenna in turn. The
corresponding tire low pressure sensor detects the LF signal and responds by modifying the mode status within the RF
transmission.

The system enters 'parking mode' after the vehicle speed has been less than 20 km/h (12.5 miles/h) for 12 minutes. In parking
mode the tire low pressure sensors transmit a coded signal to the tire pressure monitoring system module once every 13
hours. If the tire pressure decreases by more than 0.06 bar (1 lbf/in²) the tire low pressure sensor will transmit more often as
pressure is lost.

As each wheel responds to the LF signal from the tire pressure monitoring system module, it is assigned a position on the
vehicle and is monitored for the remainder of that drive cycle in that position.

Measure the resistance between: C3MC39A, harness side C4MC43, harness side Pin 7 Pin 1 Is the resistance greater than 5 ohms?
Yes
REPAIR the high resistance circuit. This circuit contains
intermediate connector, C44-Y. For additional information, refer to
the wiring diagram. Clear the DTC and run an On Demand Self Test
(ODST) using the manufacturer approved diagnostic system to
confirm rectification.
No
INSTALL a new rear right hand low-frequency initiator. REFER to:
Tire Pressure Monitoring System (TPMS) Rear Antenna (204-04 Wheels and Tires, Removal and Installation).
PINPOINT TEST F : MISSING, INCOMPATIBLE OR DEFECTIVE RUNNING TIRE LOW PRESSURE SENSOR
OR RECEIVER TEST
CONDITIONS DETAILS/RESULTS/ACTIONS F1: CHECK FOR CORRECT WHEEL AND TIRE ASSEMBLY AND TIRE LOW PRESSURE SENSOR 1 Establish that a full size running wheel and tire assembly has a tire low pressure sensor installed. As a visual confirmation, a tire low pressure sensor has a metal valve stem rather than a rubber one and
cannot be installed to a mini/space saver spare wheel. Is a full size wheel and tire assembly with tire low pressure sensor installed?
Yes
GO to F2. No
Install the correct wheel and tire assembly or tire low pressure sensor, of correct frequency, in accordance
with that defined in the manufacturer approved diagnostic system new tire low pressure sensor
application. F2: CHECK FOR ADDITIONAL DTCS 1 Remove the Tire Pressure Monitoring System power supply fuse and re-install it. Clear DTCs and leave the vehicle stationary for 15 minutes, then drive it at a speed greater than 15.5 mph (25 kph)
continuously for at least 10 minutes.
(Note: If the vehicle speed drops below this value, the drive time to complete the test will need to be increased.)

The use of the manufacturer approved diagnostic system, and the datalogger signal ’Tire pressure
monitor system status – learn mode status’ will verify the completion of the test when the value returns
to ‘Inactive’. 2 Check for additional DTCs C1A5631, C1A5831, C1A6031, C1A6231, with identical time stamps. Have all four DTCs logged with identical time stamps in the tire pressure monitoring system module?
Yes
Replace the tire pressure monitoring system radio frequency receiver.
REFER to: Tire Pressure Monitoring System (TPMS) Receiver (204-04 Wheels and Tires, Removal and Installation).
No
GO to F3. F3: VERIFY THE POSITION OF THE DEFECTIVE TIRE LOW PRESSURE SENSOR 1 Check tire pressure monitoring system DTCs. Are any C1AXX31 DTCs logged?
Yes
Install the correct tire low pressure sensor, of correct frequency, in accordance with that defined in the
manufacturer approved diagnostic system new tire low pressure sensor application, to the position
identified by the logged DTC.
REFER to: Tire Low Pressure Sensor (204-04 Wheels and Tires, Removal and Installation). No
No further action is required.
(Note: The use of the manufacturer approved diagnostic system, and the datalogger signal ’Tire pressure monitor system status – learn completed successfully’ will verify the successful completion of the test.)
PINPOINT TEST G : LOCALIZATION FAILURE TEST
CONDITIONS DETAILS/RESULTS/ACTIONS G1: CHECK FOR ADDITIONAL DTCS 1 Check for additional DTCs: C1A5711, C1A5712, C1A5713. C1A5911, C1A5912, C1A5913, C1A6111, C1A6112, C1A6113, C1A6311, C1A6312, C1A6313. Are any of the DTCs listed above also logged?
Yes
Refer to the DTC Index and remedial actions.
No
GO to G2. G2: CHECK FOR ADDITIONAL DTCS

1 Ignition off. 2 Disconnect the Tire Pressure Monitoring System Receiver electrical connector, C3MC45. 3 Disconnect the Tire Pressure Monitoring System Control Module electrical connector, C3MC39B. 4 Measure the resistance between C3MC45, harness side C3MC39B, harness side Pin 1 Pin4 Is the resistance less than 5 ohms? Yes
GO to J3. No
REPAIR the high resistance/open circuit in wiring harness. J3: C1D1987 CHECK EXTERNAL RECEIVER 1 Reconnect the Tire Pressure Monitoring System Control Module electrical connector, C3MC39B. 2 Reconnect the Tire Pressure Monitoring System Receiver electrical connector, C3MC45. 3 Using manufacturer approved diagnostic system run On Demand Self Test (0x0202). Is the DTC C1D1987 set? Yes
Replace Tire Pressure Monitoring Receiver.GO to J4. No
Investigate possible cause of intermittent failure. J4: C1D1987 CHECK TIRE PRESSURE MONITORING SYSTEM CONTROL MODULE 1 Using manufacturer approved diagnostic system run On Demand Self Test (0x0202). Is the DTC C1D1987 set? Yes
Replace Tire Pressure Monitoring System Control Module.
No
Test is complete. No further action is required. J5: C1D1987 CHECK WHEELS HAVE TIRE SENSORS INSTALLED

NOTE: As a visual check, a tire low pressure sensor has a metal valve stem rather than a rubber one
and cannot be installed to a mini/space saver spare wheel. 1 Check that all full size running wheel and tire assemblies have tire low pressure sensors installed. Is a full size wheel and tire assembly with tire low pressure sensor installed to all running wheel positions? Yes
GO to J6. No
If agreed with the customer install correct tire low pressure sensors in accordance with that defined in
the manufacturer approved diagnostic system new tire low pressure sensor application, as required.
(Note: Confirm why the vehicle has non-Tire Pressure Monitoring System w he e l & tire assemblies installed before installing tire low
pressure sensors, which are not to be claimed under vehicle warranty.) J6: C1D1987 CHECK TIRE SENSOR COMPATIBILITY TO TIRE PRESSURE MONITORING SYSTEM RECEIVER 1 Remove tire low pressure sensor from 1 wheel. 2 Verify the tire low pressure sensor part number from the information on the casing. Is the tire low pressure sensor the correct part for the vehicle? Yes
Replace Tire Pressure Monitoring Receiver.Carry out the following to verify repair.
Remove the Tire Pressure Monitoring System power supply fuse and re-install it. Clear DTCs and leave
the vehicle stationary for 15 minutes, then drive it at a speed greater than 15.5 mph (25 kph)
continuously for at least 10 minutes.
(Note: If the vehicle spe e d drops below this value, the drive time to complete the test will need to be increased. The use of the manufacturer approved diagnostic system, and the datalogger signal ’Tire pressure monitor system status – learn mode status’ will verify the completion of the test w he n the value returns to ‘Inactive’.)
No
Install the correct tire low pressure sensor, of correct frequency, in accordance with that defined in the
manufacturer approved diagnostic system new tire low pressure sensor application, to the position(s)
identified.
(Note: Confirm why the vehicle has incorrect Tire Pressure Monitoring System w he e l & tire assemblies installed before installing tire low
pressure sensors, which are not to be claimed under vehicle warranty.)

2 Main piston 3 Tube 4 Bypass valve (closed) 5 Piston and rod assembly ACCELEROMETERS


Three accelerometers are used in the adaptive dynamics system. The accelerometers are located as follows:
One each on the rear edge of the radiator support panel.
One in the luggage compartment, in the rear LH corner adjacent to the rear lamp assembly.
The accelerometers measure acceleration in the vertical plane and output a corresponding analogue signal to the adaptive
damping module. The algorithms in the adaptive damping module calculate the heave, pitch and roll motions of the vehicle,
which are used by the module to control road induced body modes.

Each accelerometer is connected to the adaptive damping module via three wires, which supply ground, 5 V supply and signal
return.

The sensing element comprises a single parallel plate capacitor, one plate of which moves relative to the other dependant on
the force (acceleration) applied. This causes the capacitance to change as a function of applied acceleration. This capacitance
is compared with a fixed reference capacitor in a bridge circuit and the signal is processed by means of a dedicated integrated
circuit to generate an output voltage that varies as a function of applied acceleration. The sensors output a signal voltage of
approximately 1 V/g ± 0.05 V/g.

SUSPENSION HEIGHT SENSORS



Four suspension height sensors are used in the adaptive dynamics system, two for the front suspension and two for the rear
suspension. A front suspension height sensor is attached to each side of the front subframes and connected by a sensor arm
and sensor link to the related lower lateral arm of the front suspension. A rear suspension height sensor is attached to each
side of the rear subframe and connected by a sensor arm and sensor link to the related upper control arm of the rear
suspension. On each suspension height sensor, the sensor arm and sensor link convert linear movement of the suspension into
rotary movement of the sensor shaft.
The sensors are also used for the static dynamic headlamp leveling system on vehicles fitted with xenon headlamps.

The suspension height sensors measure suspension displacement at each corner of the vehicle and output a corresponding
analogue signal to the adaptive damping module. The algorithms in the adaptive damping module calculate the position,
velocity and frequency content of the signals and use the results for wheel control.
Each suspension height sensor is connected to the adaptive damping module via three wires, which supply ground, 5 V supply

JaguarDrive Control Sub-System Faults
If a fault occurs in a sub-system, the driver is alerted by the illumination of a warning indicator and/or an appropriate message
for that sub-system in the instrument cluster message center. No JaguarDrive Control message will be shown when a failed
sub-system displays its own message.

When a sub-system fault is present and the driver attempts to select a different JaguarDrive Control mode or at the next
ignition on cycle, a message 'WINTER MODE FAULT' or 'DYNAMIC MODE FAULT' will appear in the message center. This
generally implies that the JaguarDrive Control system has a fault, but only because a sub-system fault is preventing its
operation. This message will be displayed once per ignition cycle, but is repeated if a further selection is made by the driver
using the JaguarDrive Control buttons or at the next ignition on cycle.


NOTE: The message 'WINTER MODE FAULT' or 'DYNAMIC MODE FAULT' can also in very rare circumstances be generated
by a fault in the JaguarDrive Control module.

It is not possible for the JaguarDrive Control module to cause any fault behavior (warning indicator illumination or message
generation) in any of the sub-systems. Illumination of a sub-system warning indicator and/or a sub-system related message
will never be associated with a JaguarDrive Control module or JaguarDrive Control system fault.

The sub-system control modules can detect a fault with the CAN (controller area network) bus signal from the transmission
selector module. If a fault in the JaguarDrive Control system is detected, the sub-system control modules will operate in the
'special modes off' setting. The sub-system control modules will record a fault code for a failure of the JaguarDrive Control CAN signal. These faults can be retrieved using the Jaguar approved diagnostic tool and will provide useful information to indicate
investigation of the JaguarDrive Selector module or the CAN bus network. JaguarDrive Control System or Control Module Fault

If a fault occurs in the JaguarDrive Control system, all button icon LED (light emitting diode)'s will be turned off (background
illumination will remain on) and pressing of the JaguarDrive Control buttons is ignored. The instrument cluster message center
will display a message 'WINTER MODE FAULT' or 'DYNAMIC MODE FAULT' when the fault occurs, if the fault is present and the
driver attempts to select a special mode (if the control module is able to do this) or at the next ignition on cycle.

The JaguarDrive Control buttons and control module (JaguarDrive Selector module) are an integral unit. If a fault occurs in
either component, the whole unit will require replacement, however, this is extremely unlikely.
CAN Bus Faults

If a CAN bus fault exists and prevents JaguarDrive Control system operation, all of the JaguarDrive Control button icon LED's will be illuminated and rotation pressing of the JaguarDrive Control buttons is ignored.

If the instrument cluster does not receive a JaguarDrive Control system CAN bus message from the JaguarDrive Control module, the message 'SPECIAL MODE UNAVAILABLE' will be displayed when the fault occurs and will be repeated at every
ignition on cycle.
User Error

A special mode change while DSC or ABS is active (this includes ABS cycling) may be misinterpreted as a system fault.

60 Oil seal The multi-plate clutch is contained in a clutch basket attached to the differential carrier with the crown wheel securing bolts.
Alternate plates of the clutch pack are keyed to the clutch basket and the LH sun gear. A pressure disc is installed on the outer end of the clutch pack and keyed to the clutch basket. A thrust race on the end of the clutch basket incorporates lugs which
extend through the clutch basket onto the pressure disc.

The actuator assembly is mounted on bearings on the outboard end of the clutch basket, against the thrust race. The actuator
assembly consists of input and output actuators separated by five ball bearings. A locking pin in the cover engages with a slot
in the output actuator to prevent it turning, but allow it to move axially. The input actuator engages with the reduction gearbox
and is free to rotate relative to the cover. Ball bearings locate in curved grooves in the mating faces of the input and
output actuators. The bottom surface of each groove incorporates a ramp. Rotation of the input actuator forces the ball
bearings up the ramps in the grooves and induces an axial movement in the output actuator. The thrust race and pressure disc
transfer the axial movement from the output actuator to the clutch pack.



Item Description 1 Actuator 2 Multi-plate clutch 3 Differential The motor is a 12 V dc motor that adjusts the frictional loading of the multi-plate clutch, via the reduction gearbox and the
actuator assembly, under the control of the DLM. Adjusting the frictional loading of the multi-plate clutch adjusts the locking
torque between the crown wheel drive gear and the sun wheel.

Four bolts attach the motor to the reduction gearbox, which is located in position on the cover with two dowels, and secured
with four bolts. An O-ring seals the joint between the motor and the reduction gearbox.

The motor is driven by a 12 V dc feed direct from the DLM. The motor also incorporates the following connections with the
DLM:

A motor temperature sensor, to prevent excessive use from damaging the motor.
Two Hall effect motor position sensors, to enable closed loop control of the motor.

The temperature sensor provides a differential oil temperature signal to the DLM, to prevent excessive use from damaging the
multi-plate clutch.

Differential Locking Module (DLM)

The DLM controls operation of the electronic differential. The DLM is attached to a bracket located on the LH side of the luggage compartment, immediately forward of the fender tail lamp, behind the trim.