Jaguar X-Type Technical Service Bulletin XT307-01: Difficulty Selecting Transmission Ranges - GEARBOX FAULT Message - Reset J-Gate

DATE 08/01
XT307-01
X-TYPE
Amended 08/02
SERVICE
TECHNICAL BULLETIN
Difficulty Selecting Transmission Ranges –
MODEL 2002 MY-ON
X-TYPE
GEARBOX FAULT Message –
VIN
Reset J-Gate
C00001-ON
Remove and destroy Bulletin XT307-01, dated 08/01.
Replace with this Bulletin.
The adjustment procedure has been revised.
Issue:
Some 2002 MY X-TYPE vehicles with automatic transmissions may experience
customer complaints of being unable to select a transmission range, or the message
‘GEARBOX FAULT’ flashing on the message center (or the powertrain malfunction lamp
[MIL] illuminating) causing the vehicle to run in limp-home mode.
Action:
Using WDS, check for any diagnostic trouble codes (DTCs) stored. If any DTC is stored
(see table below), the J-gate assembly is functioning incorrectly and needs resetting. In
order to do this, follow the Workshop Procedure outlined below.
Possible DTCs:
Condition
DTCs
Can cause the vehicle to run in limp-home mode
P1780 and/or P0706
Difficulty selecting a range or Drive
P0731
P0732
P0733
P0734
P0735
P0740
Note: Before starting the J-gate setting procedure, ensure the vehicle
is cold, or has been left to cool for at least 2 hours.
Date of issue 08/01 Amended 08/02
Bulletin Number XT307-01 Page 1 of 6

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TRANSMISSION EXTERNAL CONTROLS
LOCATION OF CABLE
ADJUSTMENT ON
TRANSMISSION
CUTAWAY VIEW
MECHANISM SHAFT
ILLUSTRATION 1
Note: If the selector lever cannot be moved from the Park position,
remove the trim on the left side of the console. Release the lever by
turning the end of the mechanism shaft to a vertical position
(Illustration 1).
FUNCTION CHECK
1.
Apply handbrake.
2.
Apply foot brake.
3.
Start vehicle engine.
4.
Starting in P, slowly, move the selector lever around the J-gate and stop in each
range position to check that all ranges can be selected. From 2, stop in each range
position on the way back to P.
5.
Move selector lever from P to R.
6.
Holding selector lever tight to outside edge of J-gate, slowly move selector lever
from R to N two or three times to ensure N illuminates.
7.
Applying minimal force, slowly move the selector lever from N to D two or three
times to ensure D does engage and illuminate.
Note: If illumination is not apparent, proceed to setting procedure A.
Page 2 of 6
Bulletin Number XT307-01
Date of issue 08/01 Amended 08/02

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Note: To verify that D is engaged, check the tachometer for a drop in
RPM.
8.
Move selector lever to 3.
9.
Holding selector lever to inside edge of J-gate, slowly move selector lever from 3 to
D two or three times.
Note: When moving selector from 3 to D, ensure selector lever passes
around the corner of D.
Note: If after moving the selector lever to D at step 9, illumination is
lost in all gear positions and cannot be recovered (even by shifting to
N), then proceed to setting procedure A outlined below. If at step 9
illumination is still apparent or can be recovered, no further action is
required.
SETTING PROCEDURE A
1.
Switch ignition OFF.
2.
Move selector lever to N.
3.
Raise vehicle on a drive-on lift.
4.
Remove transmission selector cover plate and place aside.
5.
Loosen, but do not fully remove transmission selector cable adjusting bolt (3,
Illustration 1).
6.
Inside the vehicle, hold selector lever tight to position N.
7.
Using corner of the gray feature line (that follows the J-gate) as a reference mark,
use a ruler and move selector lever back 2 mm and hold.
8.
Using an assistant under the vehicle, wiggle selector cable at transmission end.
9.
Fully tighten transmission selector cable adjusting bolt (3, Illustration 1).
10. Start vehicle engine and repeat fault identification procedure to check if fault has
been rectified. Check that ignition key can be removed easily.
SETTING PROCEDURE A (WITH J-GATE TOOL)
1.
Switch ignition OFF.
2.
Move selector lever to N.
3.
Raise vehicle on lift.
4.
Remove transmission selector cover plate and place aside.
5.
Loosen, but do not fully remove transmission selector cable adjusting bolt (3,
Illustration 1).
6.
Inside the vehicle, insert the red J-Gate setting tool into the cover plate to lock the
lever in the N position.
7.
Using an assistant under the vehicle, wiggle selector cable at transmission end.
Date of issue 08/01 Amended 08/02
Bulletin Number XT307-01 Page 3 of 6

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8.
Fully tighten transmission selector cable adjusting bolt (3, Illustration 1). Remove
red tool.
9.
Start vehicle engine and repeat fault identification procedure to check if fault has
been rectified. Check that ignition key can be removed easily.
Note: If illumination is not apparent at any point, proceed to setting
procedure B.
SETTING PROCEDURE B
1.
Move selector lever to N.
2.
Loosen, but do not fully remove transmission selector cable adjusting bolt (3,
Illustration 1).
3.
Using a steel ruler, adjust selector lever (see adjustment table) either towards or
away from N position and hold.
ADJUSTMENT TABLE
Failure
Action
Position
N or D
Set selector lever closer to N position in 1 mm increments to a maximum
of 1 mm in front of N.
4
Set selector lever away from N position in 1 mm increments to a maximum
of 4 mm behind N.
4.
Using an assistant, wiggle selector cable at transmission end.
5.
Fully tighten transmission selector cable adjusting bolt (3, Illustration 1).
6.
Repeat fault identification procedure to check if fault has been rectified.
Note: If illumination is still not apparent, further setting procedures
may be necessary. (See table for adjustment limit).
7.
Reinstall transmission selector cover plate.
8.
Fit and fully tighten cover plate fixing bolts (10 Nm).
9.
Lower vehicle. Check that ignition key can be removed easily.
J-GATE REPLACEMENT
If problems with key removal persist, replace the J-gate as follows:
1.
Open door.
2.
Switch ON ignition.
3.
Depress brake pedal.
4.
Reposition selector lever to N position.
5.
Release brake pedal.
Page 4 of 6
Bulletin Number XT307-01
Date of issue 08/01 Amended 08/02

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6.
Switch OFF ignition.
7.
Open hood and install fender protector covers.
8.
Disconnect vehicle battery.
9.
Remove J-gate surround.
10. Remove console assembly.
11. Disconnect J-gate electrical connector.
12. Undo and remove center console bracket securing screws.
Note: Center console bracket is removed with J-gate.
13. Release and remove selector cable locking pin.
14. Release selector cable retaining clip from J-gate.
15. Remove ashtray securing screws.
16. Displace and reposition ashtray.
17. Disconnect cigar lighter connector.
18. Remove ashtray.
19. Remove J-gate securing screws.
20. Displace and remove J-gate.
21. Remove center console bracket from J-gate.
22. Position new J-gate in the vehicle.
23. Position J-gate selector lever to N position.
24. Install center console bracket.
25. Install and fully seat new J-gate.
26. Install and tighten J-gate securing screws.
27. Connect ashtray cigar lighter connector.
28. Install and fully seat ashtray.
29. Install and tighten ashtray securing screws.
30. Connect selector cable to J-gate.
31. Secure selector cable locking pin.
32. Install and tighten center console mounting bracket securing screws.
33. Connect J-gate electrical connector.
34. Install center console.
35. Install J-gate surround.
36. Connect vehicle battery.
37. Switch ignition ON.
38. Depress brake pedal.
39. Position selector lever to P position.
40. Release brake pedal.
41. Switch ignition OFF.
Date of issue 08/01 Amended 08/02
Bulletin Number XT307-01 Page 5 of 6

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42. Remove fender protector covers and close hood. Check that ignition key can be
removed easily.
Parts Information:
DESCRIPTION
PART NUMBER
QTY
J-Gate assembly
C2S 20251
1
Warranty Information:
Warranty claims should be submitted quoting the information found in the table below.
This will result in payment of the stated time and, where applicable parts/miscellaneous
expense codes as listed.
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Bulletin Number XT307-01
Date of issue 08/01 Amended 08/02

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