transmission JAGUAR XJ6 1994 2.G Repair Manual

I 1 I
8-
/ /
7, 6
'4 '5
J4L- 688
1. Torque converter 6. Rotary switch positions:
2. &speed gear train 'P - Park
3. Output flange 'R' - Reverse
4. Transmission control unit 'N' - Neutral
5. Oil outlet (drain plug) 'D' - Drive
(Fully automatic control)
7. Dipstick/ oil filler tube
8. Oil cooler connection
Fig.
2 ZF 4 HP 24 E Transmission
X300 VSM Issue 1 August 1994 2

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

Automatic Transmission (AJ16)
Light throttle D1 -D2 D2 - 03 D3 - D4
Economy mile / h 10- 12 14-21 20 - 29
km/h 16 - 20 23 - 34 32 - 47
sport mile / h 10 - 16 16 - 24 25 - 33
kmlh 16 - 26 26 - 38 40 - 53
4,O Liter
D4 - TCC on
45 - 55
72
-88
49 - 59
79
- 95
Economy mile / h 34 - 38 57 - 64 88-98
km/h 55 - 61 91 - 103 141 - 157
110
- 119
km/h 69 - 77 117 - 130 176 - 191
Sport mile / h 43 - 48 73 - 81 88
-98
141
- 157
110-119
176 - 191
BOO VSM 5 Issue 1 August 1994
Through 'kick-down' point
Economy / mile / h 43 - 48
sport km/h 69 - 77 73
- 81 110- 119 110-119
117-130
176 - 191
176 - 191
Zero throttle D2 - D1 D3 - D2 D4 - D3
Economy mile / h NOT AVAILABLE 12 - 10 15 - 13
km/h 20- 16 24 - 21
sport mile / h 10-8 12 - 10 15 - 13
km/h 16- 13 20- 16 24 - 21
Up to 'kick
-down' point
Economy mile / h 21 - 19 52 - 47 86-77
sport
mile / h 30 - 27 72 - 65 109 - 99
km/h 34-31 ! 83-75
138 - 123
km/h 48-43 115- 104
175 - 159 D4
- TCC
on
49 - 39
79
- 63
52
- 39
83 - 63
86
-77
138
- 123
109 - 99
176
- 159
'Kick
-down' available
Economy / mile / h
sport
km/h
41 -35 73 - 64 107 - 95
107 - 95
66
-56 117-103 171 - 152
171 - 152
Zero throttle D2
- '1' D3 - '2'
Economy mile / h 41 -35 73 - 64
kmlh 66-56 117 - 103
sport mile / h 50 - 44 85 - 75
kmlh 80-71 136- 120 D4
- '3'
107
- 94
171
- 152
130
-114
208
- 182

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 (AJI 6)
8.1.3 TRANSMISSION CONTROL MODULE, RENEW
0 (4, OL)
SRO 44.15.32
. Raise the trunk lid and disconnect the battery.
. Remove the passenger side dash liner for access.
Displace and remove the air conditioning footwell outlet
duct.
. Release and remove the footwell carpet securing fastener:
displace and reposition the carpet for access.
Release the Transmission Control Module
(TCM) bracket
to body bracket securing nut
(1 Fig. 1).
. DisplacetheTCM mounting brackettang (2 Fig. 1)fromthe
body bracket and mounting stud.
= Reposition the TCM, release the TCM multi-pin plug lever
lock and disconnect the multi
-pin plug (3 Fig. 1).
. Release and remove the TCM mounting bracket securing
bolts and remove the TCM.
= Fit and align the new TCM to the mounting bracket.
. Fit and tighten the TCM securing bolts.
. Connect the TCM harness multi-pin plug and secure the
Position the TCM to body mounting bracket, ensuring that
Fit and tighten the TCM securing nut.
. Position the footwell carpet and fit the carpet fastener.
. Fit and align the footwell outlet duct to air conditioning
. Position and fit the duct fastener to the blower motor slot.
. Refit the dash liner.
. Reconnect the battery.
multi-pin plug lever lock.
the tang locates
in the bracket slot and stud.
unit.
1
i
J44-703 U
Fig. 1
Issue 1 August 1994 X300 VSM 7

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 (AJ16)
8.1.5 TRANSMISSION ROTARY SWITCH, RENEW
0 (4,OL)
SRO 44.15.36
. Check the shift cable adjustment.
. Switch the ignition ON, apply the footbrake and move the
Switch the ignition OFF and disconnect the battery.
. Open the armrest lid.
. Release and remove the ashtray securing screws.
. Displace the ashtray assembly for access.
. Disconnect the cigar lighter / illumination harness con-
. Place the ashtray assembly aside.
. Displace and remove the console veneer panel rear fin-
isher.
Carefully displace the Performance Mode switch from the
gear surround finisher.
. Disconnect the Performance Mode switch from the har-
ness multi-pin plug.
Displace and remove the Performance Mode switch sur-
round finisher.
Displace and remove the shift lever surround finisher.
. Release and remove the veneer panel wing nuts.
= Displace and remove the console finisher veneer panel.
Cut and remove the rotary switch harness securing straps.
= Disconnect the rotary switch harness multi-pin plugs.
. Reposition the tunnel carpet for access to the harness
Displace and reposition the grommet down through the
. Feed the harness through the tunnel to the underside of
. Raise the vehicle on a ramp.
. From beneath the vehicle, release and remove the rotary
switch harness to transmission
'F" clip securing nut; dis-
place and reposition the 'P' clip from the stud.
Release and remove the rotary switch harness to trans-
mission 'P' clip securing screw.
Release and remove the rotary switch protection cover
(1 Fig.1) securing bolts; displace and remove the switch
cover.
shift
lever to
'N'.
n ect o rs .
@
grommet.
tunnel.
the vehicle.
Disconnect the transmission multi-pin socket (2 Fig.1).
. Reposition the harness clear of the transmission unit.
. Release and remove the rotary switch securing nuts.
. Displace and remove the switch assembly.
. Displace and remove the 'P' clips from the harness.
. Fit and align the 'P' clips to the new harness / switch as-
. Displace the rubber sealing plug (3 Fig.1) from the rotary
sembly.
switch.
i3 2 JLL-690
Fig.
1
X300 VSM 9 Issue 1 August 1994

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