1994 JAGUAR XJ6 ECU

Automatic Transmission (AJ16)
8.1.12 VALVE BODY ASSEMBLY, RENEW (4,Ol)
SRO 44.40.01
Raise the hood and fit a fender cover.
. Disconnect the battery.
. Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Sub-sec-
. Remove the fluid pan, see Subsection 8.1.7.
. Remove the fluid filter, see Sub-section 8.1.6.
. Remove the transmission speed sensor, see Subsection
8.1.10.
. Disconnect the rotary switch harness multi-pin plug from
the transmission multi
-pin socket.
. Release and remove the multi-pin socket to main trans-
mission casing securing nut.
Release and remove the valve body assembly to main cas-
ing securing screws.
. DisDlace and remove the valve body assemblv, ensurina
tion
8.1.2.
that
the multi-pin socket is freed from the main case apery
ture. - . Remove the valve body harness multi-pin socket '0' ring
. Clean the valve body and main case mating faces. Check
. Fit a new '0' ring to the multi-pin socket.
. Fit the valve body assembly to the transmission unit. Dur-
ing valve body fitment, engage the shift lever quadrant
peg into the manual valve and seat the multi
-pin socket
through the main case orifice.
m: Theflat on the side of the multi-pin socket should be
located on the vertical (left-hand) side of the case.
. Fit but do not tighten the valve body assembly securing
screws.
Gently push the valve body assembly forward to assume
this position during the final tightening operation.
Carry out final tightening of the valve body assembly to
main casing securing screws.
. Fit and tighten the harness multi-pin socket to main casing
. Connect the rotary switch harness multi-pin plug to the
. Refit the speed sensor, see Subsection 8.1.10.
. Renew the fluid filter, see Subsection 8.1.6.
Refit the fluid pan, see Sub-section 8.1.7.
* Lower the vehicle on the ramp.
. Reconnect the battery.
. Refill the transmission unit with fluid, see Sub-section
8.1.2.
. Remove the fender cover and lower the hood.
and discard.
for any signs of damage.
securing nut.
transmission multi
-pin socket.
Issue 1 August 1994 X300 VSM 15

Automatic Transmission (AJ16)
8.1.13
SRO 44.40.01
. Raise the hood and fit a fender cover.
Disconnect the battery.
. Raise the vehicle on a ramp.
Drain the transmission lubrication system, see Su
. Remove the fluid pan, see Sub-section 8.1.8.
. Remove the fluid filter, see Subsection 8.1.6.
VALVE BODY ASSEMBLY, RENEW (3’21)
tion 8.1.2.
-sec-
. Release and remove the valve body securing screws
Displace and remove the valve body assembly.
Clean the valve body and mating faces.
Fit the new valve body to the transmission unit, locating
the throttle valve behind the throttle valve cam and en
-
gage the selector.
(1 Fig. 1).
. Fit but do not tighten the valve body securing screws.
. Fit and engage Service Tool JD 103 between the valve
body and the throttle valve pin.
Align the valve body assembly.
. Fully tighten the valve body securing screws.
. Remove Service Tool JD 103.
= Fit a new fluid filter, see Sub-section 8.1.6.
. Refit the fluid pan, see Subsection 8.1.8.
. 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 Issue 1 August 1994 16

Automatic Transmission (V12 & AJ16 Supercharged) Pomrtrain
8.2.2 TRANSMISSION INTERNAL HARNESS, RENEW
SRO 44.15.35
. Open the hood and fit a suitable fender cover.
. Raise the vehicle on a ramp,
. Drain the transmission lubrication system, see Sub-sec-
. Remove the fluid pan, see Subsection 8.2.14 (4,OL SC) or
U: Note the internal harness cable runs for assembly
purposes and remove the transmission internal har- ness multi-pin socket (1 Fig. I), discarding the '0' ring seal (2 Fig. 1); see Sub-section 8.2.19.
. Disconnect the internal harness plug from the 'A' Shift
. Disconnect the internal harness plug from the 'B' Shift
. Disconnect the internal harness plug from the pressure
. Disconnect the internal harness plug from the pulse width
. Disconnect the internal harness plug from the variable
force motor.
. Displace the internal harness from the retaining clips.
Remove the internal harness from the transmission unit.
. Place the harness aside.
. Clean all relevant parts.
. Fit the new internal harness to the transmission unit.
. Secure the internal harness to its retaining clips.
. Connect the internal harness plug to the variable force
. Connect the internal harness plug to the pulse width
. Connect the internal harness plug to the pressure switch
. Connect the internal harness plug to the 'B' Shift solenoid.
. Connect the internal harness plug to the 'A' Shift solenoid.
Fit a new internal harness multi-pin socket '0 ring, refit
the multi-pin socket to the main case and connect the ex- ternal harness, see Subsection 8.2.19.
. Refit the fluid pan, see Subsection 8.2.14 (4,OL SC) or
Sub-section 8.2.15 (6,OL).
. Lower the vehicle on the ramp.
. Refill the transmission unit with fluid, see Subsection 8.2.13.
Remove the fender cover and close the hood.
(4, OL SC AND 6,OL) e
tion 8.2.13.
Sub-section 8.2.15 (6,OL).
solenoid.
solenoid.
switch manifold.
modulator (TCC solenoid).
motor.
modulator.
manifold.
@
2
Fig 1
Issue 1 August 1994 X300 VSM 5

Automatic Transmission (V12 & AJ16 Supercharged) Powertrain
8.2.3
SRO 44.15.39
. Open the hood and fit a suitable fender cover.
9 Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Subsec-
. Remove the fluid pan, see Sub-section 8.2.14 (4,OL SC) or
. Remove the fluid filter, see Sub-section 8.2.18.
Disconnect the internal harness plug from the pressure
Release and remove the pressure switch manifold to valve
. Remove the manifold from the valve body.
. Retrieve the manifold to valve body '0' ring seals (Fig.1)
Clean the valve body manifold seating area.
. Fit new '0' ring seals to the grooves in a new pressure
Fit the manifold to the valve body.
. Fit and tighten the manifold to valve body securing bolts.
Connect the internal harness plug to the pressure switch
Refit the fluid filter, see Sub-section 8.2.18.
Refit the fluid pan, see Sub-section 8.2.14 (4,OL SC) or
. Lower the vehicle on the ramp.
. Refill the transmission unit with fluid, see Sub-section
. Remove the fender cover and close the hood.
PRESSURE SWITCH MANIFOL D, RENEW
(4,OL SC AND 6,OL)
tion 8.2.13.
Sub
-section 8.2.15 (6,OL).
switch manifold.
body securing bolts.
and discard.
switch manifold.
manifold.
Sub
-section 8.2.15 (6,OL).
8.2.13. Fig.
1
Issue 1 August 1994 6 X300 VSM

Powertraln Automatic Transmission (V12 & AJ16 Supercharged)
8.2.4 INPUT SPEED SENSOR, RENEW (4,OL SC)
SRO 44.15.40
. Raise
the vehicle on a ramp.
Reposition the edge of the transmission tunnel sound in- sulation foam for access.
. Disconnect the harness plug from the input speed sensor.
Release and remove the speed sensor securing bolt.
. Reposition the speed sensor protection cover for access;
. Remove the speed sensor from the transmission unit and
. Clean the main case speed sensor area.
. Fit a new '0' ring seal to a new input speed sensor.
9 Lubricate the '0' ring seal.
. Fit and seat the speed sensor to the main case.
. Reposition and align the speed sensor protection cover.
. Fit and tighten the speed sensor securing bolt.
Connect the harness plug to the speed sensor.
Reposition the edge of the transmission tunnel sound in-
. Lower the vehicle on the ramp.
the
cover remains captive on the harness.
place aside. @ sulation foam to the original position.
8.2.5
SRO 44.15.41
. Raise the vehicle on a ramp.
. Reposition the edge of the transmission tunnel sound in- sulation foam for access.
. Disconnect the harness plug from the output speed sen-
sor.
. Release and remove the speed sensor securing bolt.
. Reposition the speed sensor protection cover for access,
noting that the cover remains captive on the harness.
. Remove the speed sensor from the transmission unit and
place aside.
. Clean the main case speed sensor area.
. Fit a new '0 ring seal to a new output speed sensor.
. Lubricate the '0 ring seal.
. Fit and seat the speed sensor to the main case.
. Reposition and align the speed sensor protection cover.
Fit and tighten the speed sensor securing bolt.
. Connect the harness plug to the speed sensor.
Reposition the edge of the transmission tunnel sound in-
. Lower the vehicle on the ramp.
OUTPUT SPEED SENSOR, RENEW (4,OL SC)
sulation foam to the original position.
X300 VSM 7 Issue 1 August 1994

Automatic Transmission (V12 & AJ16 Supercharged) Powertrain
8.2.6
SRO 44.15.40
. Open the hood and fit a suitable fender cover.
. Raise the vehicle on a ramp.
. Slacken the underfloor catalyst to downpipe clamps se-
. Displace and reposition the olive clamps on the pipes.
INPUT SPEED SENSOR, RENEW (6,OL)
curing bolts.
Slacken the underfloor catalyst
to intermediate silencer
clamps securing bolts.
9 Displace the underfloor catalyst assembly rearwards to
disconnect from the downpipes.
Displace and remove the olives from the downpipes.
Using a wire brush, clean the olives and downpipe joints.
. Place a suitable piece of wood between the underfloor
. Reposition the edge of the transmission tunnel insulation
. Release and remove the input speed sensor securing bolt.
. Reposition the speed sensor protection cover for access,
noting that the cover remains captive on the harness.
Disconnect the speed sensor harness multi
-pin plug.
- Displace and remove the speed sensor from the trans- mission case.
Clean the transmission case area.
. Fit a new ‘0 ring seal to a new input speed sensor.
. Lubricate the ‘0 ring seal.
. Fit and fully seat the speed sensor to the transmission
. Reconnect the harness multi-pin plug.
Reposition and align the protection cover.
. Fit and tighten the speed sensor securing bolt.
Reposition the insulation foam to its original position.
Remove the block of wood from between the underfloor
. Apply sealant to the downpipe joints and olives. See Ser-
Fit and seat the olives to the downpipes.
Reposition the olive clamps.
Tighten the underfloor catalyst to downpipe clamps secur-
Align the intermediate silencers to the underfloor catalyst
. Tighten the clamp securing bolts.
. Lower the vehicle on the ramp.
Remove the fender cover and close the hood.
catalyst
and the body for access.
foam for access.
0
case.
catalyst and the floor.
vice Materials
in the preliminary pages, this Section.
Reconnect the underfloor catalyst to the downpipes.
0
ing bolts.
assembly.
lppl
0
X300 VSM issue 1 August 1994 8

Powertwin Automatic Transmission (V12 & AJ16 Supercharged)
8.2.7
SRO 44.15.41
OUTPUT SPEED SENSOR, RENEW (6,OL)
. Open the hood and fit a suitable fender cover.
. Raise the vehicle on a ramp.
. Slacken the underfloor catalyst to downpipe clamps se-
Displace and reposition the olive clamps on the pipes.
. Slacken the underfloor catalyst to intermediate silencer
. Displace the underfloor catalyst assembly rearwards to
. Displace and remove the olives from the downpipes.
. Using a wire brush, clean the olives and downpipe joints.
Place a suitable piece of wood between the underfloor
catalyst and the body for access.
. Reposition the edge of the transmission tunnel insulation
foam for access.
. Release and remove the output speed sensor securing
bolt.
Reposition the speed sensor protection cover for access,
noting that the cover remains captive on the harness.
. Disconnect the speed sensor harness multi-pin plug.
. Displace and remove the speed sensor from the trans-
. Clean the transmission case sensor area.
. Fit a new '0' ring seal to a new output speed sensor.
. Lubricate the '0' ring seal.
Fit and fully seat the speed sensor to the transmission
. Reconnect the harness multi-pin plug.
Reposition and align the protection cover.
. Fit and tighten the speed sensor securing bolt.
Reposition the insulation foam to its original position.
Remove the block of wood from between the underfloor
catalyst and the floor.
. Apply sealant to the downpipe joints and olives. See Ser- vice Materials in the preliminary pages, this Section.
. Fit and seat the olives to the downpipes.
. Reconnect the underfloor catalyst to the downpipes.
= Reposition the olive clamps.
. Tighten the underfloor catalyst to downpipe clamps secur-
= Align the intermediate silencers to the underfloor catalyst
. Tighten the clamp securing bolts.
Lower the vehicle on the ramp.
. Remove the fender cover and close the hood.
curing
bolts.
cl amps securing bolts.
disconnect from the downpipes.
mission case.
case.
0
ing bolts.
assembly.
Issue 1 August 1994 X300 VSM 9

Automatic Transmission (V12 & AJ16 Supercharged) Powertrain
8.2.8 TEMPERATURE SENSOR, RENEW
(4,OL SC AND 6,011
The temperature sensor forms part of the internal wiring
harness. Should the sensor require replacement, a new wir- ing harness must be fitted. See Subsection 8.2.2.
8.2.9 VARIABLE FORCE MOTOR, RENEW
SRO 44.15.43
. Open the hood and fit a suitable fender cover.
. Raise the vehicle on a ramp.
. Drain the transmission lubrication system, see Sub-sec-
Remove the fluid pan, see Sub-section 8.2.14 (4,OL SC) or
Remove the fluid filter, see Subsection 8.2.18.
Disconnect the internal harness plug from the variable
Release and remove the motor retaining clamp to valve
. Remove the retaining clamp (2 Fig.1) and remove the
Fit a new variable force motor to the valve body.
CAUTIOI\I: Do not adjust the motor screw and ensure that
the motor filter is not damaged.
. Align the motor.
. Fit the motor to the valve body retaining clamp.
. Fit and tighten the motor retaining clamp securing screw.
Connect the internal harness
plug to the motor.
. Refit the fluid filter, see Sub-section 8.2.18.
. Refit the fluid pan, see Subsection 8.2.14 (4,OL SC) or
. Lower the vehicle on the ramp.
. Refill the transmission unit with fluid, see Subsection
(4,OL SC AND 6,011
tion 8.2.13.
Sub
-section 8.2.15 (6,OL).
force motor.
body securing screw (1
Fig.1).
motor (3 Fig.1) from the valve body and place aside.
Sub
-section 8.2.15 (6,OL).
8.2.13.
m Remove the fender cover and close the hood.
JU 596
Fig. 1
X300 VSM Issue 1 August 1994 10