1994 JAGUAR XJ oil change

1.3.6 Fault Finding Chart (continued)
Problem Possible Cause
slipping or shaking from start in
'everse gear
Strong jerk, or distant double
erk, when engaging positions
P
-R', or 'N-R' (below 1500RPM
tngine speed)
'B','E or 'D' clutch defective
Damper
'6' defective (will give the
same symptoms when changing
from 2nd to 3rd gears
Action
Service 1 renew transmission.
Service
1 renew valve block
qeverse lamp does not illuminate Starter inhibit switch faulty.
bulbs, fuses and cables
'unctioning correctly) Faulty selector lever.
io drive or severe delay. Renew
switch.
Renew lever.
Slipping or shaking during initial Position
'R' not
selected.
'orward movement
Strong jerk 'N
-D' (below 1500
3PM engine speed) Select
'R'.
Sear change functions
faulty (in c'
Zhange 1st to 2nd 12nd to 1st Governor dirty.
Shift valve 1-2 sticking.
Zhange 1st to
2nd
Renew governor.
Renew valve block.
Zhange 2nd to 3rd
13rd to 2nd
Governor dirty.
Shift valve 3
-4 sticking.
:hange 2nd to 3rd
Zhange 3rd to
4th I 4th to 3rd Renew
governor.
Renew valve block.
Sudden shifts
Jehicle starts in 2nd gear Governor sleeve sticking.
Shift valve 1
-2 sticking.
Governor sleeve sticking.
Shift valves 1
-2 and 2-3 sticking.
Jehicle starts in 3rd gear Renew
governor.
Renew valve block.
Renew governor.
Service
I renew valve block.
Searbox changes 1st to 3rd
Uo shifts Dirty
oil filter.
Oil level incorrect.
'A' clutch defective.
'D' clutch one
-way clutch faulty.
'A' clutch damaged
'A' clutch faulty.
'A' clutch damper faulty.
Id or warm state)
If there is no debris in sump, renew the
oil filter and oil;
if debris is present in
the sump, renew the transmission.
Check oil level.
Service
I renew transmission.
Service
1 renew transmission.
Service
I renew transmision
Service
1 renew transmission.
Service
/ renew valve block.
Brake
'Cl' and 1 or 'C' faulty I Service / renew transmission
Governor dirty.
I Renew governor.
Shift valve 2-3 sticking.
'B' clutch faultv
Renew valve block.
Service
I renew transmission
Dampers sticking
I Service I renew valve block
Shift valve 2
-3 sticking I Service 1 renew valve block
Governor sticking.
Dampers sticking. Change
governor.
Service
I renew valve block
Issue 1 August 1994 35

1.3.6 Fault Finding Chart (continued)
Problem
.oss of oil through breather
3il leak at intermediate plate
-eakage between gearbox and
2xtension housing
Uoises
iigh pitched squeaking noise,
jependant on engine RPM, in all
jears, when oil is warm and
accompanied by intermittent
hive after a long journey
iigh pitched noise in all
Dositions, especially if oil is cold.
Sucking noise from pump.
dery noisy in 'lock-up'
rorsional vibrations from engine
Nhen in 'lock-up'
-oud noisewhen converter
:lutch engages
Engine vibrations when
:onverter clutch engaged
Possible Cause
Oil level too high.
Incorrect oil.
Breather blocked.
No breather cap.
'0' ring breather damaged.
Securing clip faulty.
Blanking plug loose
Fastening screws loose.
Gasket faulty.
Dirty filter
Low oil level.
Filter not sealing.
Leaking valve block.
Filter damaged.
Torsion damper faulty
Engine
RPM is too low, 'lock-up'
shift point incorrect
Torsion damper defective
Change point too low
Action ___ Check level.
Remove transmission, ensuring that
it
is drained (including torque converter,
oil cooler and pipes).
Change breather, check for foul
condition
of foam insulation pad.
Fit cap or renew breather.
Remove tail housing and replace
'0'
ring.
Renew clip.
Tighten plugs. Renew sealing washers.
Tighten screws to specified torque.
Renew gasket.
If there is no debris in the sump, renew
the filter and oil.
If debris is present,
renew the transmission.
Top-up as necessary.
Check
I renew 0-ring.
Service
/ renew valve block.
Check filter.
Renew torque converter
Service
I renew valve block
Renew converter
Check valve block ~~
Issue 1 August 1994 38

ZF Automatic Transmissions Service Manual
2.2 HYDRAULIC CIRCUIT DIAGRAMS
Component Engagement
Key
To Hydraulic Diagrams (commencing on page 52)
1. 2.
3. 4.
5. 6.
7.
8. 9. 10. 11. 12. 13.
14. 15. 16.
17.
18.
Oil pump Sump
Torque converter
Olil cooler
Clutch 'A' damper
Clutch 'B' valve and damper
Clutch 'Cl' damper
Clutch 'Cl' valve
Clutch 'C' valve and damper
Clutch
'D' valve and damper
Clutch 'E' damper
Clutch
'F' valve and damper
Reverse locking valve
Shift valve
1 - 2
Shift valve 2 - 3
Shift valve 3 - 4
Safety valve
Pressure valve
1
A Clutch 'A' D Clutch 'D B Clutch 'B' E Clutch 'E'
C Clutch 'C' F Clutch 'F'
C1 Clutch 'C"
19.
20.
21.
22.
23. 24.
25.
26.
27.
28.
29.
30.
31.
32.
33. 34.
35.
G
H J K
Pressure valve 2
Torque converter pressure valve
Lubrication valve
Lubrication valve
Lock
-up control valve
Modulation pressure valve
Main pressure valve
Gear change valve
Solenoid valves
MVllMV2l MV3
Pressure regulator
ECM
- inputs and outputs
Engine torque
Throttle valve Engine speed
(RPM) Transmission speed (RPM) Transmission rotary switch
Oil filter
Torque converter freewheel
(C) Clutch freewheel (D) Clutch freewheel (E) Clutch freewheel
Exhaust - Reduced pressure
=X= Th rott le - Modulation pressure
4= Orifice 2- Sump
- Main pressure - Lubrication pressure
- Converter pressure
Throttle pressure
Issue 1 August 1994 51

ZF Automatic Transmissions Service Manual
a
2.3.6 Fault Finding Chart (continued)
Problem
Starter motor does not operate
'osition 'R' - Reverse
3everse gear inoperative
Slipping and juddering
Harsh
engagement'p-R' chan
'N-R' change (below 1500RPF
engine speed)
Reverse lamp does not
illuminate (bulbs, fuses and
cables functioning correctly)
Possible Cause
Rotary switch adjustment.
Rotary switch wiring fault.
Rotary switch faulty.
Position
'P or 'N' not selected.
vIV2 faulty.
rNire to MV2 earthed.
3il filter dirty.
Damper
'6' faulty.
Clutch
'6' faulty (also no 3rd gear).
Clutch 'D' faulty.
Clutch
'E' faulty (also no engine braking
in 2nd and 3rd gears).
Pressure regulator valve 1 binding
Rotary switch wiring fault.
Rotary switch faulty.
Reverse gear inhibit valve activated.
Main pressure control valve seized (also
no forward drive in 'D' Drive).
'B'Clutch, 'D'Clutch or 'E' Clutch faulty.
Pressure regulator valve 1 binding
'F'Clutch drum sealing rings faulty
causing
loss of 'E' Clutch pressure.
Damper
'6' faulty (also no 2nd to 3rd
shift).
Pressure regulator valve 1 binding
Modulation pressure too high.
Rotary switch faulty.
Rotary switch setting incorrect.
Rotary switch faulty.
Rotary switch wiring fault.
Action
4djust switch.
qectify.
3ectify or renew.
Select 'F" or 'N'.
Renew valve block.
Renew harness.
Clean
/ replace filter and flush out
the
oil cooler and pipes.
Renew valve block.
Renew transmission.
Renew transmission.
Renew transmission.
Renew valve block.
Rectify.
Rectify or renew.
Renew valve block.
Renew valve block.
Renew transmission.
Renew valve block.
Renew transmission.
Renew valve block.
Renew valve block.
Check TCM Fault Codes.
Rectify or renew.
Adjust setting.
Renew.
Rectify.
Issue 1 August 1994 62

ZF Automatic Transmissions Service Manual
2.3.6 Fault Finding Chart (continued)
a
0
0
a
Problem
Leakage at breather
Leakage from oil cooler circuit
Leakage at intermediate plate
Leakage between gearbox and
extension housing
General
Noise and associated
interruption of power
Loud noise with no drive
forward or reverse
Groaning or buzzing noise (can
sound like mechanical damage)
in all selector positions,
especially when cold.
Sucking noise from pump.
Loud noise on converter clutch
engagement
Engine vibrations when
converter clutch engaged
Possible Cause
Oil level too high.
Incorrect oil specification.
Breather cover missing.
Breather cover
'0' ring faulty.
Breather cover loose.
Pipe lock nuts loose.
Pipe line faulty.
Oil cooler leaking.
Intermediate plate plug leaking
Fastening screws loose. Gasket
faultv.
Oil filter dirty
Drive plate to converter connection
damaged.
Pump drive damaged.
Oil level too low.
Valve block leaking.
Torsion damper defective
Change point too low
Action
Rectify.
Change
oil and flush system.
Replace breather cover.
Renew
'0' ring.
Renew lockwasher.
Torque tighten.
Renew relevant pipes.
Renew oil cooler.
Torque tighten plug.
Renew sealing washer.
Torque tighten
Renew gasket.
Clean
/ replace filter. If clutch debris
found, renew transmission, flush
cooling system
Renew drive plate and converter as
necessary.
Renew transmission.
Rectify.
Renew valve block.
Renew converter
Check TCM
Issue 1 August 1994 67