torque JAGUAR XJ6 1994 2.G Owner's Manual

Automatic Transmission (AJ16)
Both types of automatic transmission comprise a hydrodynamic torque converter driving an epicyclic gear train which
provides four forward ratios and reverse. Gearshift selection is made by a hydraulic (or electronichydraulic) trans- mission control unit. Six gearshift positions are provided:
Position
'P' (Park) -the driven wheels are mechanically locked at the transmission.
Position
'R' (Reverse) - reverse gear selected.
Position
'N' (Neutral) - engine disconnected from drive-line and wheels.
Position 'D' (Drive)
- all four speed ranges are selected automatically with lock-up available in top gear only.
Position
'3' - automatic selection of the lowest three speed ranges only.
Position '2'
- automatic selection of the lowest two speed ranges only; the transmission is prevented from shift- ing up to the third and top speed ranges.
Immediate selection of a lower ratio is also available, within mapped limits, by 'kick
-down' (pressing the accelerator
pedal down beyond the normal full throttle position) for example when overtaking.
A brake pedal/gearshift interlock is incorporated in the shift lever mechanism. Theshift lever may only be movedfrom
the 'P' (Park) position if the ignition key switch is in position 'll', and the foot brake is applied. The ignition key cannot
be removed from the ignition switch unless the shift lever is in the 'P' (Park) position. Once the ignition key has been
removed, the shift lever is locked in the Park position. The gearshift interlock may be over-ridden manually in the event
of an electrical failure or when it is required to move the vehicle manually for access, ie for removal of the propeller
shaft.
8.1.1.1
Gearshift selection causes the appropriate gear to be selected through a cable operated shift lever on the side of the
Gear Selection (ZF 4HP 22)
transmission unit. When a gea; is selected, the shift points are determined by accelerator pedal position through a
throttle cable connection and by pressures equivalent to road speed derived from a centrifugal governor on the output
shaft.
Gearshift speed and quality are controlled by the hydraulic control unit located in the lower part of the transmission
housing. The control unit contains selector valve, control pistons and pressure valves.
The hydraulic control unit can be overridden by 'kickdown'. This is actuated by the final travel of the accelerator pedal
and causes the next lower gear to be selected.
8.1.1.2
Gearshift selection causes the appropriate gear to be selected through a cable operated shift lever on the side of the
transmission unit; the shift lever also operates a rotary switch attached to the side of the transmission unit. When a
gear is selected, the rotary switch provides an output or combination of outputs to the TCM, which continuously moni
- tors the gear selected in addition to output shaft speed and transmission oil temperature. Information from the Engine
Control Module (ECM) representing engine speed, load and throttle position is also fed to the TCM to enable the most
suitable gear to be selected.
Gear selection and gearshift speeds are controlled by the manually operated selector valve, a solenoid operated pres
- sure regulator and three solenoid valves. On receipt of signalsfrom the TCM, the three solenoid valves MVI, MV2 and
MV3, in various combinations with the safety valve, determine the appropriate gear range. The TCM, on receipt of
information of engine state and road speed, determines the shift speed.
The Performance Mode switch, located on the shift lever surround, provides two alternative shift speed patterns:
1. 'Normal (Economy) Mode' - designed for everyday use.
2. 'Sport Mode'
- gear shift takes place at higher road speeds to enhance performance.
The 'kick
-down' switch, located beneath the accelerator pedal, is actuated by the final travel of the pedal and signals
to the TCM that the next lower gear is to be selected.
Gear Selection (ZF 4 HP 24 E)
X300 VSM 3 Issue 1 August 1994

Automatic Transmission (AJ16)
8.1.1.3 Shift Speeds
3,2 Liter
Up to 'kickdown point' D4 - D3 D3 - D2
D2 - D1 -
km/h 102 - 114 67 - 78
36 - 50 -
- mile / h 64-71 42 - 48 22 - 31
'Kick-down' available D4 - D3 D3 - D2 D2 - D1
mile I h 86-99 61 -67 30 - 37 -
kmlh 139 - 160 98- 108 48 - 60 -
available speed) -
km/h 108- 123 - -
- - Manual inhibit (maximum D4 - D3 D3 - D2
- - mile 1 h NOT INHIBITED 67 -76
TCC
- Torque converter clutch
Issue 1 August 1994 4 X300 VSM

bZF Automatic Transmission (AJ16) -
0
8.1.2 TRANSMISSION FLUID, RENEW
SRO 44.24.02
= Raise the hood and fit a fender cover.
. Raise the vehicle on a ramp.
. Place a drain tin in position beneath the transmission drain
Release and remove the transmission drain plug; allow
. Fit the drain plug with a new washer and torque tighten.
Reposition the drain tin beneath the dipstick tube union.
Remove the screw securing the dipstick tube bracket.
. Release the dipstick tube union nut and disconnect the
tube from the fluid pan.
. Drain the transmission fluid.
Clean the tube unions, reconnect the dipstick tube to the
. Lower the vehicle on the ramp.
. Remove the transmission dipstick.
. Renew the transmission fluid filter, see Subsection 8.1.6.
Fill the transmission with the correct fluid, see the ZF Auto-
Note: It will not be possible to get all the initial fill quantity
of fluid into the transmission.
. Refit the dipstick.
. Startthe engine, apply all brakes and run the transmission
With the engine still running, remove the dipstick.
Clean the dipstick and refit.
Remove the dipstick and check the transmission fluid
. Add fluid until the correct level is achieved.
. Stop the engine and refit the dipstick.
. Checkfluidleveltothe'HOT'marksaftera20mileroad run
(3,2L AND 4,OL)
Plug.
the fluid to drain.
fluid pan and torque tighten the union nut.
0
matic Transmissions Service Manual, General Data.
through
all gear positions and select 'Park'.
level. Remove the fender cover and lower the hood.
to ensure accurate results.
m
e
0
X300 VSM Issue 1 August 1994 6

Automatic Transmission (AJ16)
8.1.4 TRANSMISSION ROTARY SWITCH, ADjUST
SRO 44.15.37
. Raise the vehicle on a ramp.
. Position the shift lever to 'N' ensuring that the stalk enters
the gate
'N' notch centrally.
9 Release and remove the transmission unit rotary switch
protection cover
(1 Fig.1) to fluid pan bolts.
. Remove the rotary switch protection cover from the fluid
pan bosses.
. Slacken the rotary switch to mounting bracket securing
nuts.
Displace the rubber blanking plug from the rotary switch
center boss
(2 Fig.1).
. Fit Service Tool JD161 (Fig.2) to the rotary switch to align
the switch rotor with the switch body.
CAUTION: Service Tool JD161 is a precision tool and
. Evenly torque tighten the rotary switch to mounting
. Disengage and remove ServiceTool JD161 from the rotary
. Fully seat the rubber blanking plug into the rotary switch
. Fit the rotary switch protection cover and align with the
. Fit and torque tighten the rotary switch protection cover to
Lower the vehicle on the ramp.
. Check for correct operation of start inhibit and gear selec-
(4,011
should be treated as such.
bracket securing nuts.
switch.
center boss.
fluid pan bosses.
fluid pan securing bolts.
tion.
12 JL 4 - 689
Fig. 1
Fin. 2
X300 VSM Issue 1 August 1994 8

Automatic Transmission (AJl6)
. Ensure the shift lever is in 'N'.
. Fit and fully seat a new rotary switch to the transmission
unit.
Fit but do not fully tighten the rotary switch securing nuts.
. Fitand align ServiceTool JD161 (Fig.l)tothe rotaryswitch
. Finallytorque tighten the rotary switch securing nuts.
Displace and remove Service Tool JD161.
. Reposition and fit the rubber sealing plug to the switch.
. Reconnect the transmission unit multi-pin plug.
. Reposition the harness and feed the multi-pin plugs and
. From below the vehicle, reposition the harness 'P' clip to
. Fit and tighten the 'F" clip securing nut.
. Align the harness 'P' clip to transmission shift abutment
Fit and tighten the 'P' clip securing screw.
. Fit and align the rotary switch protection cover; fit and
torque tighten the securing bolts.
. From inside the vehicle, fit the grommet in the correct
orientation and reposition the harness in the correct posi
-
tion.
to
align the switch rotor to the switch body.
grommet through the tunnel aperture.
its mounting stud.
bracket.
. Reconnect the rotary switch harness multi-pin plugs.
. From below the vehicle, ensure that there is no excess
slack
in the switch harness that could foul the propshaft.
. Lower the vehicle on the ramp.
Reposition and fit the tunnel carpet.
Using suitabletiestraps,securethe harnesstotheconsole
= Fit and fully seat the veneer panel to the console; fit and
harness.
tighten the wing nuts.
Fit and fully seat the shift lever surround.
multi-pin plug and fully seat the switch.
Connect the Performance Mode switch to the harness
Fit and align the console veneer panel rear finisher.
9 Place the ashtray assembly in position.
= Reconnect the cigar lighter / illumination harness con-
nectors.
Reposition and
fit the ashtray assemb1y;fit and tighten the
securing screws.
. Close the armrest lid.
Reconnect the battery
Fia. 1
Issue 1 August 1994 10 X300 VSM

Automatic Transmission (AJl6)
8.1.6 TRANSMISSION FLUID FILTER, RENEW
SRO 44.24.07
9 Raise the hood and fit a fender cover.
. Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Sub-sec-
. Removethefluid pan,seeSub-section8.1.7 (4,OL)orSub-
. Release and remove the fluid filter securing screws; dis-
. Remove and discard the filter '0' ring.
. Clean the new filter and mating faces.
. Fit the '0' ring to the new filter; fit and seat the filter assem-
. Fit and torque tighten the filter securing screws.
. Refitthefluidpan,seeSub-section8.1.7 (4,OL)orSub-sec-
. Lower the vehicle on the ramp.
. Refill the transmission unit with fluid, see Subsection
8.1.2.
Remove the fender cover and lower the hood.
(3,2L AND 4,011
tion 8.1.2.
section
8.1.8 (3,2L).
place and remove the fluid filter.
bly to the valve body.
tion 8.1.8
(3,2L).
8.1.7 FLUID PAN, RENEW (4,OL)
SRO 44.24.04
. Raise the hood and fit a fender cover.
. Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Sub-sec-
tion 8.1.2.
Release and remove the rotary switch protection cover to
fluid pan securing screws; remove the rotary switch
protect ion cover.
Release and remove the fluid pan securing bolts and
clamps
(1 Fig. 1). Displace and remove the fluid pan
(2 Fig. 1).
. Drain the fluid pan. Remove and discard the fluid pan
gasket if the gasket is damaged.
Remove the magnets from the fluid pan and place the fluid
pan aside.
. Clean the gasket faces and magnets.
Fit a serviceable gasket to the new fluid pan.
. Fit the magnets in position in the fluid pan.
Fit and align the fluid pan to the transmission unit; fit and
torque tighten the fluid pan clamps and securing bolts.
. Fit the rotary switch protection cover to the fluid pan
bosses and fit and torque tighten the rotary switch protec-
tion cover securing bolts.
. Lower the vehicle on the ramp.
Refill the transmission unit with fluid, see Subsection
Remove the fender cover and lower the hood.
8.1.2.
Fig. 1
X300 VSM 11 Issue 1 August 1994

Automatic Transmission (AJ16)
8.1.8 FLUID PAN, RENEW (3,2L)
SRO 44.24.04
. Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Sub-sec-
tion 8.1.2.
Release and remove the fluid pan securing bolts and
clamps
(1 Fig. 1).
. Displace and remove the fluid pan (2 Fig. 1).
= Drain the fluid pan. Remove and discard the fluid pan
. Remove the magnetsfrom the fluid pan and place the fluid
. Clean the gasket faces and magnets.
. Fit a serviceable gasket to the new fluid pan.
. Fit the magnets in position in the fluid pan.
9 Fit and align the fluid pan to the transmission unit.
Fit the fluid pan clamps; fit and torque tighten the fluid pan
. Lower the vehicle on the ramp,
. Raise the hood and fit a fender cover.
. Refill the transmission unit with fluid, see Sub-section
. Remove the fender cover and lower the hood.
gasket
if the
gasket is damaged.
pan aside.
securing bolts.
8.1.2.
8.1.9
SRO 44.24.05
. Raise the hood and fit a fender cover.
. Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Sub-sec-
FLUID PAN GASKET, RENEW (3,2L)
tion 8.1.2.
. Release and remove the fluid pan securing bolts clamps
. Displace and remove the fluid pan (2 Fig. 1).
(1 Fig. 1).
Remove and discard the fluid pan gasket.
pan aside.
. Removethe magnetsfrom the fluid pan and place thefluid
. Clean the fluid pan, gasket faces and the magnets.
. Fit a new fluid pan gasket.
. Fit the magnets in position in the fluid pan.
9 Fit and align the fluid pan to the transmission unit, fit the
fluid pan clamps,fit and torquetighten the fluid pan secur-
ing bolts.
. Lower the vehicle on the ramp.
. Refill the transmission unit with fluid, see Sub-section
. Remove the fender cover and lower the hood.
8.1.2.
/>U492
Fig. 1
Fig. 1
j
X300 VSM Issue 1 August 1994 12

Automatic Transmission (V12 & AJ16 Supercharged) Powortrain
Fixing
Drain plug to fliud pan
Fluid pan
to case
Pressure control solenoid bracket
to valve body
Solenoid to valve body
Speed sensor and bracket assembly to case
Valve body
to case 1 lubrication pipe
Valve body to case
I PSM
1. SERVICE TOOLS & EQUIPMENT
No Jaguar service tools are required for the operations covered by this Sub-section.
lightening Torque
(Nm)
34
24
8
8
11
11
11
Description
Tivoli Kay Adhesives No. 5696
sealant
UseS Notes
Exhaust system joints
Description
I To be issued I I
Data
Issue 1 August 1994 ii X300 VSM

Automatic Transmission (V12 & AJl6 Supercharged) Pomrtrain
8.2.1 GENERAL DESCRIPTION
This section provides information relating to the Powertrain 4L80-E transmissions fitted to the 4,O liter supercharged
engine (4,OL SC) and to the 6,O liter engine (6,OL).
The Powertrain 4L80-E is a four-speed, high torque capacity, electronically controlled automatic transmission, which
comprises a torque converter with lock-up direct drive clutch and three planetary gear sets. Five multiple diskclutches,
one intermediate sprag clutch assembly, two roller clutch assemblies and two band assemblies provide the drive el- ements necessary for correct sequential gear engagement and operation.
The torque converter containing
a pump, a turbine (rotor), a stator assembly, and a clutch pressure disksplined to the
turbine, acts as a fluid coupling for smooth torque transmission from the engine. The converter also supplies addi- tional torque multiplication when necessary, and the torque converter clutch (TCC) pressure disk provides a mechan- ical direct drive or 'lock-up' above a certain speed in top gear for greater fuel economy.
Gearshift operations are controlled from the Transmission Control Module (TCM), which governs the electronically
controlled valve body situated within the transmission.
Three planetary gear sets provide reverse and the four forward ratios, the changing of which is fully automatic in rela
- tion to load, vehicle speed and throttle opening. The Transmission Control Module receives and integrates various ve- hicle sensor input signals, and transmits operating signals to the solenoids located in the control valve assembly.
These solenoids govern the transmission operating pressures, up-shift and down-shift gear selection patterns and
also the torque converter clutch operation by pulse width modulated control.
8.2.1.1 Gear Ranges
Selectable gear positions are: P - Park, R - Reverse, N - Neutral, D - Drive, 3, 2.
P - Park position of the shift lever provides a mechanical locking of the output shaft of the transmission, and as such,
must only be engaged when the the vehicle is stationary. In addition, and for
extra safety, the handbrake should also
be applied. It is necessary to have the ignition ON and the footbrake applied to move the shift lever from the Park
position. For ignition key removal the shift lever must be in the Park position. The engine can be started in the Park
position.
R - Reverse enables the vehicle to be operated in a rearwards direction. The engine cannot be started in the Reverse
position.
N
-Neutral position enables the engine to be started and operated without driving the vehicle. It also allows the vehicle
to be moved manually for access, ie for removal of the propeller shaft.
D
-Drive position allows the automatic selection of all four forward gear ratios during normal driving conditions for
maximum efficiency and fuel economy. On acceleration, down-shifts are obtained by depressing the accelerator pedal
or by manual selection. The engine cannot be started in this position.
3
- Manual third position allows automatic operation of the three lower gear ratios but inhibits selection of the fourth
ratio. This position is used for towing a trailer or negotiating hilly terrain when greater engine braking control is re- quired. The engine cannot be started in this position.
2 - Manual second position allows automatic operation of the two lower gear ratios but inhibits selection of the third
and fourth ratios. This position is used for heavy traffic congestion or negotiating hilly terrain when even greater en
- gine braking control is required than is provided by manual third. This ratio may be selected at any vehicle speed - even if the transmission is in third or fourth ratio, the transmission will immediately down-shift to second gear pro- vided the vehicle speed is below 137 km / h (85 mile / h). The engine cannot be started in this position.
N.g!b: With the Performance Mode switch in the NORMAL position, the vehicle will pull away in second gear. How- ever, if more than 75 per cent of throttle is applied when the vehicle speed is between zero and 13 km/ h (8 mile / h), then first gear will be selected. From 13 to 61 km/ h (8 to 38 mile/ h) first gear is obtainable by 'kick-down'.
In 'sport' mode thevehicle pulls away in first gear and the transmission operatesfully in all four forward gears.
X300 VSM 1 Issue 1 August 1994

Automatic Transmission (V12 & AJ16 Supercharged) Powertrain
1.
2.
3.
4.
5. 6.
7.
8.
9. 10.
11.
12.
13.
Torque converter
Turbine shaft
Pressure disk
Converter turbine
Converter stator
Variable force motor
solenoid
Fluid pan
Filter
Interior detent lever
Manual shaft
Control valve
Front band
Parking lock actuator
3 4667 i JU-134
14.
15.
16.
17.
18.
19.
20. 21.
22.
23.
24. 25.
Rear band
Sun gear shaft
Sun gear
Parking lock pawl
Transmission case
Output shaft
Rear extension housing
Rear internal gear
Output planetary carrier
assembly Reaction planetary
carrier assembly
'LO' roller clutch
Main shaft
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
Intermediate clutch Intermediate sprag clutch
Direct clutch
Forward clutch
Overdrive planetary carrier
assembly
Overdrive roller clutch
Overrun clutch
Fourth clutch
Pump assembly
Converter pump
Stator roller clutch
Output speed sensor
Fig.1 Powertrain 4L8O-E automatic transmission
0
0
0
Issue 1 August 1994 2 X300 VSM