2010 JAGUAR XFR automatic transmission

Transmission Cooling (Description and Operation), Transmission Cooling (Description and Operation).
Inspection and Verification

1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of damage and system integrity.



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.
Symptom Chart

Condition Possible Causes Action Over heating of the
automatic
transmission Obstruction in the automatic
transmission fluid cooler Flush out the automatic transmission fluid cooler with new
automatic transmission fluid. If the flushing is unsuccessful,
install a new transmission fluid cooler. Over heating of the
automatic
transmission Obstruction in the automatic
transmission fluid tubes Flush out the automatic transmission fluid cooler tubes with new
automatic transmission fluid. If the flushing is unsuccessful install
new automatic transmission fluid cooler tubes. Loss of automatic
transmission fluid Connections to the automatic
transmission and the automatic
transmission fluid cooler Check the integrity of the tubes, connections and seals. Check the
torque of the tube fixings. Loss of automatic
transmission fluid Leak at oil cooler
Check the integrity of tubes, connections and seals. Check the torque of the tube fixings. Mechanical

Feed and return tubes
Connections to the automatic transmission and the automatic transmission fluid cooler
Automatic transmission fluid level Visual Inspection
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Published: 11-May-2011
Transmission/Transaxle Cooling - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Transmission Fluid Cooler V8 5.0L Petrol/V8 S/C 5.0L Petrol
Removal and Installation

Removal


NOTE: Removal steps in this procedure may contain installation details.


1. WARNING: Make sure to support the vehicle with axle stands.

Raise and support the vehicle.

2. Refer to: Transmission Fluid Drain and Refill (307-01B Automatic Transmission/Transaxle - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L
Petrol, General Procedures).

3. Refer to: Cooling System Draining and Vacuum Filling (303-03C Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol, General Procedures).

4. CAUTIONS:


Be prepared to collect escaping fluids.


Make sure that all openings are sealed. Use new
blanking caps.










5.

Published: 11-May-2011
Transmission/Transaxle Cooling - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Transmission Fluid Cooler Tubes V8 5.0L Petrol/V8 S/C 5.0L
Petrol
Removal and Installation

Removal


NOTE: Removal steps in this procedure may contain installation details.


1. WARNING: Make sure to support the vehicle with axle stands.

Raise and support the vehicle.

2. Refer to: Transmission Fluid Drain and Refill (307-01A Automatic Transmission/Transaxle - V6 3.0L Petrol, General Procedures).

3. CAUTIONS:


Be prepared to collect escaping fluids.


Make sure that all openings are sealed. Use new
blanking caps.










4. Torque: 11 Nm www.JagDocs.com

Published: 11-May-2011
Automatic Transmission/Transaxle External Controls - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - External Controls - Overview
Description and Operation

OVERVIEW

The external controls for the transmission consist of a JaguarDrive selector, two paddle switches and an emergency park
release.

The JaguarDrive selector transmits driver transmission selections to the TCM (transmission control module). The paddle
switches allow the driver to initiate gear shifts when the transmission is in the sequential shift manual mode. The emergency
park release ensures the transmission is kept in neutral during vehicle recovery operations.

Four additional switches adjacent to the JaguarDrive selector control the JaguarDrive control functions. For additional
information, refer to 204-06 Ride and Handling Optimization Description and Operation.
www.JagDocs.com

Published: 11-May-2011
Automatic Transmission/Transaxle External Controls - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - External Controls - System Operation and
Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired; D = High speed CAN (controller area network) bus; O = LIN (local interconnect network) bus



Item Description 1 Battery 2 BJB (battery junction box) (250 A megafuse) 3 CJB (central junction box) 4 EJB (engine junction box) 5 TCM (transmission control module)

6 Clockspring 7 Steering wheel audio switches 8 Upshift paddle switch 9 Downshift paddle switch 10 Instrument cluster 11 JaguarDrive selector


JAGUARDRIVE SELECTOR System Operation

Rotation of the JaguarDrive selector to any of the five positions is sensed by the TCM (transmission control module) via the
high speed CAN bus. A LIN bus connection is also provided, but is only used in the event of a CAN bus failure as a back-up. The TCM then reacts according to the selected position. The JaguarDrive selector is a magnetic system using Hall effect sensors to determine the position of the selector.

The S (sport) position selection allows the TCM to operate the transmission using the semi-automatic Jaguar sequential shift. Gear selections are sensed by the TCM when the driver operates the steering wheel paddle switches. Once the JaguarDrive selector position is confirmed, the TCM outputs appropriate information on the high speed CAN bus which is received by the instrument cluster to display the gear selection information in the message center.
Refer to: Information and Message Center (413-08 Information and Message Center, Description and Operation).
The paddles can also be used on a temporary basis when the JaguarDrive selector is in the D (drive) position to override the
automatic gear selection if required.

PARK INTERLOCK AND NEUTRAL LOCK

Neutral lock is a requirement for the JaguarDrive selector. The selector is always locked at ignition on when the engine is not
running, except after an engine stall when the selector is not in P (park) or N (neutral).

If, when driving with the JaguarDrive selector in S, D or R (reverse) at a speed of more than 5 km/h (3 mph), the driver selects
P or N:

Without the brake pedal pressed, the JaguarDrive selector will be immediately locked once the vehicle speed falls to
below 5 km/h (3 mph).
With the brake pedal pressed, the JaguarDrive selector will remain locked for as long as the brake pedal remains
pressed, regardless of vehicle speed.
The transmission will only engage park once the vehicle speed is less than 2 km/h (1 mph).

If the driver selects N and releases the brake pedal with a vehicle speed of less than 5 km/h (3 mph), the JaguarDrive selector
will be locked 2 seconds after N is selected. The selector will remain locked until the driver presses the brake pedal again.

To ensure that a driver request to change from a non-driving range (N for example) to a driving range (D for example), the park
interlock and neutral lock features are used in conjunction with the intermediate position.

If the transmission receives a range change request without the brake pedal pressed, the TCM initiates a soft lock function. The transmission will remain in park or neutral, depending on the starting position.
If a transmission position letter is flashing in the message center and the vehicle has no drive, the driver must:
Press the brake pedal.
Reselect N or P on the JaguarDrive selector.
Select the required driving range, ensuring that the brake pedal is pressed.
Rocking Function

The rocking function compliments the neutral lock function. For all changes from a non-driving range to a driving range, it is
necessary to press the brake pedal (to release either the park interlock or neutral lock).

In situations where the driver will require to change the gear selection from R to D, or from D to R, without brake pedal input
(car park maneuvering, 3 point turns or 'rocking' the vehicle from a slippery surface for example), the rocking function gives a 2
second lock delay when N is selected on the JaguarDrive selector and the brake pedal is not pressed.

Intermediate Position

If the JaguarDrive selector is rotated slowly from P to S and back to position P with the brake pedal pressed, the R or D
position display letter in the message center will flash and the transmission will remain in park or neutral depending on the
previous starting position of the selector.

If the brake pedal is released when R or D is flashing in the message center and the JaguarDrive selector is rotated to the R or
D position, the required range will not be selected and the transmission will remain in park or neutral, depending on the
previous starting position. This feature is known as soft lock.

If the driving range letter in the message center is flashing and the vehicle has no drive, the driver should depress the brake
pedal to reselect N or P, and then select the required driving range while the brake pedal remains pressed.

selector.

Rotation of the JaguarDrive selector allows the selection of P, R, N and D. By depressing the JaguarDrive selector and rotating
clockwise from the D position, S mode can be selected. The JaguarDrive selector is fully electronic rotary transmission selector
with no mechanical connection to the transmission.

The JaguarDrive selector rises from the JaguarDrive selector module once the engine is running. When the engine is stopped
with the JaguarDrive selector in any position other than N, it retracts into the JaguarDrive selector module again. If the
selector is in position N when the engine is stopped, it remains in the raised position for up to 10 minutes, for use in a drive
through car wash for example. After 10 minutes the selector automatically retracts into the JaguarDrive selector module. The
selector also retracts if P is selected within the 10 minute period.

If the JaguarDrive selector does not rise from the console when the engine is started, but electrical power is supplied to the
selector, the retracted selector can still be rotated to make selections. If electrical power to the JaguarDrive selector is lost,
the selector will not rise from the console when the engine is started and the retracted selector will not rotate.

The JaguarDrive selector contains an internal interlock solenoid to prevent the selector from being rotated when the engine is
not running.

The engine can be stopped with the JaguarDrive selector in any position. Once the engine is stopped the selector will
automatically reset to the P position and the transmission park lock will be engaged, except if the selector is moved to the N
position when the engine is stopped.

signal which is passed via the clockspring to the instrument cluster. The instrument cluster converts the signal into a high
speed CAN bus signal to the TCM.
Pulling the LH (left-hand) downshift - paddle provides down changes and pulling the RH (right-hand) upshift (+) paddle
provides up changes. The first operation of either paddle, after sport mode is selected, puts the transmission into permanent
manual Jaguar sequential shift mode. Rotation of the JaguarDrive selector back to the D position, returns the transmission to
conventional automatic operation.

Temporary operation of manual Jaguar sequential shift mode can also be operated with the JaguarDrive selector in the D
position. Operation of either the upshift or downshift paddles activates the manual mode operation. If the JaguarDrive selector
is in D, Jaguar sequential shift will cancel after a time period or can be cancelled by pressing and holding the + paddle for
approximately 2 seconds. PADDLE SWITCHES