Jaguar XJ (X350). Manual — part 1071

Description and operation

External Controls

Item

Part Number

Description

1

—

Transmission selector lever

2

—

Selector cable and bracket

Transmission selector lever

The transmission selector lever:

has eight positions: Park, Reverse, Neutral, Drive, Fifth, Fourth, Third and Second.

operates the transmission selector shaft in the Park, Reverse, Neutral, Drive positions by means

of a cable.

communicates the transmission selector lever position to the transmission control module (TCM)

using electronic code through the Controlled Area Network (CAN) bus.

uses "Hall Effect" switches and a micro controller inside the transmission selector lever to

generate the electronic code.

when moved to the left-hand side of the transmission selector lever, allows manual electronic

selection of Fifth, Fourth, Third and Second gears.

The transmission selector illumination:

is provided by the TCM by using electronic code.

is possible by decoding the electronic code received by the transmission selector lever from the

TCM and illuminating the relevant transmission selector lever position.

provides a red transmission lever position illumination to indicate the selected gear.

provides a green background for the transmission selector lever module and is hard-wired to the

front electronics module (FEM).

The eight transmission selector positions are:

P: The transmission is mechanically locked (starting available).

R: Reverse gear.

N: No power to the rear wheels (starting available).

D: All six forward gears available.

5: Upshift to fifth gear only.

4: Upshift to fourth gear only.

3: Upshift to third gear only.

2: Upshift to second gear only.

Sport mode switch

The sport mode switch:

allows the driver to select or de-select the automatic transmission sport mode.

allows the automatic transmission to operate normally when the sport mode is selected, but

under acceleration the gear shift points are extended to make full use of the engine's power
reserves.

allows the driver to drive the vehicle in the "D" position with the full automatic transmission shift

or manually shift gears in the "second, third, fourth and fifth" positions.

is illuminated when Sport mode is selected.

communicates with the TCM through the CAN network to show the sport mode switch status.

Transmission unit gear selector

The gear selector at the transmission unit:

www.

is connected to the transmission selector lever module by a selector cable.

operates the manual selector valve, which is part of the electro-hydraulic control unit.

Transmission selector lever interlock solenoid

Transmission selector lever interlock solenoid:

prevents the transmission selector lever from being moved from the Park position, unless the

ignition switch is in the "ON" position and the brake pedal is applied.

is controlled by an input from the brake pedal switch through the CAN bus.

Transmission selector lever interlock solenoid operation

When the driver first enters the vehicle and turns the ignition switch to the "ON" position, the

transmission selector lever position indicator "P" will flash. If the driver then applies the brake pedal

while the transmission selector lever position indicator "P" is flashing, the driver will then be able to

move the transmission selector lever out of the "P" position.

Once the transmission selector lever has been moved out of the "P" position, the transmission

selector lever interlock solenoid will de-energise after 5 seconds. If the transmission selector lever is

moved back into the "P" position before the 5 seconds have elapsed, the transmission selector lever

interlock solenoid will de-energise as soon as the transmission selector lever detects it is in the "P"

position.

If the transmission selector lever is moved into a gear selection position for longer than 5 seconds

and then returned to the "P" position whilst the brake pedal is applied. The transmission selector

lever interlock solenoid will remain de-energised and the transmission selector lever position

indicator "P" will flash. The driver must release and re-apply the brake pedal to allow the

transmission selector lever to be moved from the "P" position.

If the driver runs the vehicle for a short period of time, with the brake pedal applied and then turns

the vehicle off without moving the transmission selector lever out of the "P" position. The driver will

not be able to remove the key from the ignition switch, until the brake pedal has been released.

Diagnosis and testing

External Controls

1 . Verify the customer concern.

2 . Visually inspect for obvious signs of mechanical or electrical damage.

WARNING: Danger of accident. Apply the parking brake. Shift the gear selector lever to "P".

Failure to follow these instructions may result in personal injury.

Visual Inspection Chart

Mechanical

Electrical

Visibly damaged or worn parts.

Loose or missing nuts or bolts.

Fuse(s).

Loose or corroded electrical connector(s).

1 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible)

before proceeding to the next step.

2 . If the cause is not visually evident, verify the symptom and refer to the Jaguar Approved

Diagnostic System.

Pinpoint Tests

PINPOINT TEST G189073p1 : J-GATE
SYSTEM CIRCUIT CHECKS

G189073t1 : CHECK FOR IGNITION FEED TO THE J-GATE

1. Disconnect the J-gate assembly electrical connector CA245. 2. Turn the ignition to the "ON"

position. 3. Measure the voltage at CA245 Pin 1 (GO).

Is the voltage greater than 10 Volts?

-> Yes

GO to Pinpoint Test G189073t6.

www.