between 2.7 and 3 litres ESSO LT 71141 lubricated for life km pressurised oil splash 88 kg with oil and electronics 330 mN at 3500 rpm
ES9J4L3 205/65R15 index V 2.718 - 11.65 km/h* 1.481 - 21.4 km/h* 1 - 31.66 km/h* 0.720 - 44 km/h* 2.568 - 12.33 km/h* 59x68 20x69 20x16
Speeds in km/h are given at 1000 rpm.
Internal gear change safety thresholds: LEVER POSITION DR D21 SAFETY THRESHOLD 10 km/h 165 km/h 110 km/h 60 km/h
8 VI - TIGHTENING TORQUES
TRANSMISSION COMPONENT Auto trans housing DESCRIPTION Exchanger output connector tube mounting to auto. trans Cover mountings Banjo connect. Transmission input External mountings on auto trans + strap bracket (2 bolts) auto trans mountings behind converter Drain plug Mounting(s) on auto trans (socket bolts) Switch mountings on support plate Selector mounting on shaft Sleeve stop lug mounting on converter housing Bridge mountings on auto trans housing Angle mountings on auto trans housing Mounting(s) on auto trans housing Mounting on hydraulic unit (output speed) Mounting(s) on auto trans housing (input speed) Mounting(s) on auto trans housing N BOLTS 1 HEX HEAD Hex head - 13 mm spanner
BOLT TIGHTENING DIMENSIONS TORQUE(S) MNm
Side cover Side cover Converter housing Converter housing Converter housing Exchanger Position switch Selector control Selector control
Hex head - 13 mm spanner Hex head - 19 mm spanner Hex head - 13 mm spanner Hex head - 13 mm spanner 6 point socket bolt, 8 spanner 6 point socket bolt, 6 spanner Hex head - 10 mm spanner Hex nut (13) Hex head - 13 mm spanner Hex head - 10 mm spanner TORX TORX
M8 L = 28 M14 x 1.5 M8 L = 40 M8 L = 50 M16 x 1.5 M12 x 1.5 M6 L = 16 M8 M8

23 Nm 25 Nm 23 Nm

23 Nm 45 Nm 35 Nm 10 Nm 21 Nm 15 Nm
Hydraulic unit cover Hydraulic unit cover Hydraulic unit Engine speed sensor Engine speed sensor Speedo sensor
M6 L = 37 M6 L = 20 M6 L = 55 M6 L = 20 M6 L = 35 M7 X1 L = 16

6 Nm 6 Nm 8 Nm 10 Nm

Hex head - 11 mm spanner
ASSEMBLY Drive plate converter Engine block converter housing Engine block converter housing Crankshaft/carrier ring Closure plate Auto trans. suspension Auto trans. suspension

N BOLTS 2

BOLT HEAD Hex head - 16 mm spanner Hex head - 17 mm spanner 6 point socket bolt 8 spanner (thread on AT side) Hex head - 17 mm spanner Hex head - 10 mm spanner Stud(s) Hex head - 13 mm spanner

47 Example: Description of a clutch
Spring ring Steel disc Lined disc Spring - washer Stop washer Disc carrier plate Input shaft Oil supply for dynamic pressure balance 9 - Clutch oil supply 10 - Cylinder 11 - Piston 12 - Spring - disc

12345678-

4HP049D
Feature: Dynamic pressure balance. Clutches B and E are balanced in dynamic pressure since this pressure is the same on either side of the piston. Process: The gap between the stop washer and the piston is filled with non pressurised oil. A dynamic pressure which depends on the engine speed is then step up. The gap between the piston and the cylinder is filled with pressurised oil by the control valve. A dynamic pressure is also set up but the static pressure controlling the clutch also exists at the same time. When the static pressure falls, the piston returns to its initial position under the action of the spring-washer. The advantages of the dynamic pressure balance are the following: Certain opening of the clutch in all engine speed ranges. Greatly improved gear changing quality.

Piston

Action of spring + centrifugal pressure
Control pressure + centrifugal pressure

48 Clutches B and E

Smooth steel disc Lined Linked to disc PS2
Piston + spring assembly for clutch B
Movement input housing Piston Return spring

4HP050P

49 Brakes C and D

Plate carrier C and D

4HP051D

Smooth steel disc

Return spring

Lined disc

4HP052D

Connection with P1

50 IV - OBTAINING THE GEARS A - OPERATING DIAGRAM OF THE AUTOMATIC TRANSMISSION

F C1-PS2 C2-PS1

Converter Step-down gear

4HP053D

Differential
PSO: Transmission output gear

51 B - REVERSE GEAR

F C1-PS2 C2-PS1 D C

4HP055D

4HP056D
Planet wheel 1 Sunwheel 1 Planet wheel carrier 1

Ring 1

Planet wheel 2 Sunwheel 2 Planet wheel carrier 2 Ring 2
Drive element P2 Reaction element PS2 -C1 P2 S2 S2 C2 - PS1. The planet wheels S1 rotate inside C1 PS1 PS0 PS0/PS1 -C2 turns in the opposite direction to P2 Demultiplication ratio: - 2.568

2 - Vehicle speed sensor

The input gear of the step-down gear is the mechanism output pinion since it is connected to the planet wheel carrier PS1. Its speed of rotation is therefore proportional to the speed of the vehicle. Using the same principle as for measuring the input speed, every time one of the gear teeth passes under the sensor, an alternating signal is produced, the frequency and amplitude of which are proportional to the speed of rotation of the mechanism output gear.
Example for the output speed sensor
Electrical voltage of the sensor Start of driving Time

Vehicle stationary

FS8015D
Note: - The input speed sensor cannot be adjusted.
- The output speed sensor can be adjusted using a shim; in effect, the input gear of the step-down gear has a variable number of teeth depending on the vehicle in question. As its diameter is therefore variable, the sensor must be adjusted to ensure the correct air gap.
III - OIL TEMPERATURE PROBE
A - ROLE This informs the ECU of the temperature of the transmission oil. It allows it to adopt gear changing strategies and a lock-up control mode preventing the oil from overheating and consequently from damaging the transmission. It also has an effect on the control pressure calculation used within the scope of the management of gear changes. B - OPERATION The value of resistance increases as the temperature rises. This is a PTC type thermistor (positive temperature coefficient resistor). It is located in the hydraulic unit.

Ohms 1100 1000

PTC CTP
20C 30C 40C 50C 60C 70C 80C

4HP101C

4HP102C
ECU 5V + R T eau 88V NR KOSTAL connector 16V NR
The probe circuit is supplied with five volts direct current. Between tracks 22 and 21, the ECU measures the voltage at the probe terminals which varies as a function of the probe's resistance.

4HP103C

IV - BRAKING INFORMATION
This is supplied to the ECU through the stop switch which is operated by the brake pedal. This logical information (0 or 1) is used for special strategies:
to force a change down when the brake pedal is used, to perform the shift-lock function.
ECU "Braking" info 10 88V NR + ignition on 3 F2 3V MR

4HP104C

LOGICAL INFORMATION SUPPLIED BY THE EMC
The engine management ECU provides the automatic transmission ECU with three items of information in the form of logical signals:
throttle position (as a percentage) 0% no load 100% full load engine torque (in Nm), engine speed (in rpm).
EMC 43 55V NR Control panel Central diagnostic socket 39 ET info 38 Thr. info AT ECU 40 N info 88V NR

122 Position N:

4HP111D
In this position, the multifunction switch allows the engine to be started via terminal 6 by operating the starting safety relay. It informs the automatic transmission ECU of its position via terminal 5 for the display on the control panel.

123 Position D:

4HP112D
The multifunction switch informs the automatic transmission ECU of its position via terminals 2, 3 and 5 for the display on the control panel.

124 Position 3:

4HP113D
The multifunction switch informs the automatic transmission ECU of its position via terminals 2, 4 and 5 for the display on the control panel.

125 Position 2:

4HP114D
The multifunction switch informs the automatic transmission ECU of its position via terminals 2, 3 and 4 for the display on the control panel.

126 Position 1:

4HP115D
The multifunction switch informs the automatic transmission ECU of its position via terminals 3, 4 and 5 for the display on the control panel.
Note: The multifunction switch contains intermediate tracks allowing the warning light on the control panel to flash in the intermediate lever positions (especially between position P and D).
INFORMATION REQUIRED FOR OPERATION

FUNCTION

INFORMATION TYPE SOURCE
Selector lever position +/Set of strategies selected
Throttle position Kickdown request Braking Engine speed Transmission input speed Transmission output speed Engine torque Transmission oil temperature
Multifunction switch PRND321 Switches ECO switch (NORMAL) SPORT SNOW Engine ECU or potentiometer Throttle position Stop switch Engine ECU * Inductive sensor * Inductive sensor Engine ECU or injector signal Thermistor * *

* * * * * * * * *

* * * * * *

* * * *

Chapter 10

THE ECU

On the CITRON XANTIA, the ECU is located in the engine compartment under the battery. The ECU inputs and outputs are performed by means of an 88 track connector.

4HP116D

The automatic transmission ECU using "FLASH EPROM" technology. This new technology means that the ECU can be updated without it having to be removed in the event of a software upgrade (in order to solve a driving pleasure problem for example). In effect, instead of replacing the ECU or the Eprom, the operation consists of "downloading" the ECU program into its memory from a suitable after-sales tool via the diagnostic socket.

IECU FUNCTIONS

The ECU performs the following functions. A - GEAR CHANGING LAWS The ECU has 10 gear changing laws which are used to adjust the transmission operation to the driver's driving style, to the chosen program and to internal and external conditions. The following laws are therefore obtained: 6 laws: for auto-adaptivity, 1 law: for the snow program, 1 law: for depollution when cold (reheating), 2 laws: for temperature protection of the automatic transmission B - PROGRAMS The ECU manages 3 programs: auto-adaptive, sport and snow (upon driver's request). C - AUTO-ADAPTIVITY The ECU has an auto-adaptive program which it modifies in real time throughout the vehicle's life, adapting itself to its internal and external environment. The ECU works in a closed loop permanently checking that its commands have been carried out whilst adapting itself to them. The ECU therefore adapts itself to: the driver by memorising his driving style (sporty driving, economic driving.), the vehicle (empty, laden, towing, kickdown.),

Naturally, the engine overspeed safety (changing limits) cuts in when the lever is moved to an imposed position (3, 2 or 1).
143 Special sets of laws:
Temperature rise laws: this cartographic map is designed to help the engine warm up and therefore to make the catalytic converter heat up quicker. For this, gear changing points are reduced. It is applied in the following conditions: For 130 seconds after the engine has been started (rev counter information) when the transmission temperature is less than 30C. Transmission temperature protection laws: The ECU has two cartographic maps which result in an increase in engine speed: - cartographic map N1 if transmission temp. > 120C, - cartographic map N2 if transmission temp. > 118C and town type driving.
Note: Temperature protection also effects the operation of the lock-up (reduction and even removal of slip)
Examples of changing laws SK2 laws
70 LOAD % SPEED KD = 95% INCREASING GEARS Graphical representation of KD

4HP121D

DECREASING GEARS 70 LOAD % SPEED 180 200

4HP122D

KD KD = 95%
Manual change down safety

SK5 laws

INCREASING GEARS LOAD % 120 SPEED 140 160

4HP123D

DECREASING GEARS 70 LOAD % SPEED 2 3

4HP124D

IV - DSP FUNCTION (AUTOADAPTIVE CHANGING LAWS)
A - INTRODUCTION This function allows the ECU to alter the gear changing points automatically as a function of: the driver's wishes, the driver's style of driving (sporty or fuel economy), the vehicle load conditions (recognition of the increase in resistance to movement), the road profile (flat, mountain). The last three parameters are represented by a modulation factor calculated as a function of all the variables the ECU has. The ECU can then choose the most suitable set of gear changing laws from the six it has in its memory. The gear changing points therefore change in real time.
1 - Adaptivity to load (increase gear)
The ECU can recognise an increase in the resistance to movement with respect to the vehicle's normal behaviour on flat road. Gears are therefore changed up slightly later in order to maintain sufficient torque at the wheel. Consequently, the frequency at which the gears are changed is reduced.

2 - Adaptivity to driver

The ECU can recognise the driver's actions so as to work out his style of driving and the traffic conditions (traffic jams for example). The variables used are the following: accelerator position (throttle opening), speed at which accelerator is acted upon ( variation in the transmission output speed. derivative) t
3 - Specific case: going downhill and braking
The ECU can anticipate changing down a gear in the following case: positive acceleration of the vehicle in the no load position and, action on the brake pedal. It therefore anticipates changing down a gear after the brake pedal has been acted up for: 2 seconds on horizontal ground, 1 second when going downhill, 0.5 seconds in the "snow" program.

* Vveh > limit f (gear engaged, downhill flag status, snow flag status) 0 or 1 * Vveh > Vveho + Veh where: Vveho = Vveh at the point where the 0.5 s timer is triggered Vveh = f (gear ratio, downhill flag status, snow flag status) = 9.6 km/h in our application When the function is deactivated, the gear is determined by the active set of laws gear changes up are authorised.
3 - Forced gear changes down when braking (ZRS)

0 or 1

a - Aim This function is used to anticipate gear changes down, so as to provide the engine brake and therefore save the brakes over a long downhill (slope). It may be active regardless of the set of gear changing laws used. b - Description The function is active if, for a duration the value of which depends on the status of the downhill flag, the brake pedal is applied (brake flag = 1) and the vehicle is "changing down". When the function is active, independently to the active set of gear changing laws, a gear is changed down as soon as the safety conditions are satisfied (engaging safety limits) and when: Vveh < limit f (gear engaged) = 30 km/h - 155 km/h and, - 0.4 g < < 0. A gear will be changed down more easily when Vveh = t travelling downhill. For as long as the above conditions are fulfilled, all upward gear changes - based on the active set of laws - are forbidden.
Case of several gear changes down
After a forced gear change down, if the conditions are once again fulfilled, a second gear change down may be performed if a specific bit f (set of gear changing laws used, downhill flag) = 1.
The function is stopped if one of the following conditions is fulfilled: * Brake flag = 0 and, /idle speed > limit (calibrated value) and timer f (Flagsnow, Flagdownhill) has elapsed; this timer is triggered when Flagbrake = 0 and /idle speed > limit. * Vveh < limit f (set of gear changing laws, Flagsnow) * Vveh > limit f (gear engaged, Flagdownhill, Flagsnow) * Vveh > Vveho + Vveh f (gear engaged, Flagdownhill, Flagsnow) Vveho = Vveh at the instant when the timer described above is triggered. When the function is stopped, the gear is once again worked out by the active set of gear changing laws.

The actuator control is interrupted either by leaving the + engine running or P position or by releasing the brake pedal.
Specific case The SL actuator cannot withstand a permanent supply.
However, it is acceptable to limit the control to a duration greater than or equal to 1 minute whilst complying with the following condition: after the timer has expired, after the pedal has been released briefly, the actuator must be operated instantaneously and it must be operational (sufficient force developed).
Downgraded mode If the function uses an ECU which can detect faults in the information tested (either the "lever in P", "pressure on brake pedal", "vehicle speed > 3 km/h" or "position of ignition key" information), it should be possible to prevent the actuator from working electrically. In a case such as this, an emergency function called a release should be available: using a tool or a key, this allows the lever to be manually unlocked from position P.

VKEY-LOCK

The key lock function is a safety function which requires the selector lever to be put into position P before the ignition key can be removed (the ignition switch cannot be moved from position A to position ST). This: prevents the steering wheel from being locked by the steering lock when the vehicle is moving, along with the shift lock function, encourages the driver only to leave his vehicle with the lever in position P. This ECU function is performed by an actuator located near to the ignition switch: selector lever not in position P actuator not supplied key locked, selector lever in position P actuator supplied key unlocked. This function may be replaced by a buzzer which warns the driver that he is removing the ignition key although the selector lever is not in position P.

To buzzer 1

+ 12VP 3 16V NR 88V NR 9 + 12V ECU

4HP132C

MFS in position P
MFS = multi function switch
179 For information: Key-lock operating logic
T1: Gives the driver a time delay between switching off the engine (key moved from M to A) and removing the key (key moved from A to St) = 1 to several minutes. T2: This monitors the return from P for a limited time after the ignition has been switched off to allow the key to be unlocked as soon as position P is returned to = hour to several hours.

Downgraded mode:

If the ECU detects a fault in the "lever in P" or "ignition key position" information: either the key-lock is supplied as soon as the correct information is present, or a tool or a key can be used to manually unlock the lever from position P.

Initialisation when ignition switched on

KL deactivated

In P Gear lever position? KL activated

Not in P

Gear lever position? In P NO Ignition switched off? YES Timer T1 started
Gear lever position? Not in P Ignition switched off? YES Timer T2 started NO

KL activated

Gear lever position? In P NO Timer T1 finished? YES Computer switched off KL deactivated
Gear lever position? Not in P Timer T2 finished? YES Computer switched off KL deactivated NO

VI - OPERATING THE FANS

The ECU operates the fans by earthing a relay.

To fans

4HP133C

+ 12VP

Chapter 13

DIAGNOSTIC

GENERAL
A - AIM The aim of the auto-diagnostic is to: warn the driver should a system operating fault arise, help the repair technician locate the origin of the fault or faults. B - RECORDING FAULTS The auto-diagnostic records permanent faults as well as temporary system operating faults. These faults, after being recorded, are permanently memorised even after the vehicle has been switched off and can only be erased following a voluntary action by the repair technician; faults can only be erased after they have been read to ensure that memorised faults are viewed at least once by repair staff. Faults are stored in the memory under a fault code in the chronological order in which they appear.
184 C - CLASSIFYING FAULTS Fault are classified into two categories:
serious faults requiring the vehicle to be repaired immediately (risk of damaging transmission, safety of passengers jeopardised): as soon as they are detected, the driver may be warned by certain lights flashing, minor faults which do not require immediate repair: when these appear, the driver is not warned but the faults are stored in the ECU's non volatile memory. Major faults have priority over minor faults. D - DETECTING FAULTS The ECU permanently monitors: its peripherals (sensors and actuators), the actual gear engaged (input speed / output speed), the converter slip (engine speed / turbine speed), the gear changing time (actual time / theoretical time), the operating temperature. And finally, the ECU can detect: 42 permanent or temporary faults detected on the input and output signals, by analysing the decline in their electrical characteristics or by performing a coherence check, 3 automatic transmission operating faults: fault whilst changing a gear (due to a pressure regulator being blocked for example), two gears engaged at the same time, or slipping of a clutch, excess engine speed.

185 E - DOWNGRADED MODE

When a problem occurs, and so as to protect the transmission as well as to ensure the comfort of the vehicle's occupants, the ECU can activate one of its sliding scale emergency or replacement modes (13 downgraded modes). Depending on the type of fault, the ECU chooses the following downgraded modes from amongst three types: 3rd hydraulic (4th if activated whilst driving), maintain gear engaged (until the ignition is switched off then 3rd hydraulic engaged), replacement value (absent data recomposed or replaced). Whilst driving, this program might appear in the form of: a restriction in transmission functions (e.g. can no longer change gears or no kickdown), no display on the control panel (sport and snow lights flash) for major faults, the transmission being operated electronically with pre-programmed characteristics (gears can be changed alone), juddering when moving lever from P to R and from N to R.

II SERIAL COMMUNICATIONS WITH THE ELIT TESTER
Master / slave type exchange (the tester and the ECU take it in turns to be emitter and receiver): after a word is sent by the master, this word is returned to it by the slave along with the information indicating that it has been correctly received, after receiving the reply from the slave, the master is ready to send a second word. Transmission speed: 9600 baud The tester uses the following connections: Ubat, Earth, K line and L line (in the future).
Various functions offered by K (and L) lines:
reading of recorded faults, reading of parameters (measured values), simulation, initialisation of auto-adaptives, downloading, erasing of faults, identification of ECU.

Reading memorised faults

For each memorised fault, the ECU's reply message is structured in the following way: fault code, nature of the fault (open circuit, short circuit.), type of fault (permanent, temporary), associated contexts, age of the fault (50 counter).

Reading parameters

Variables: engine speed: rpm, transmission input speed: rpm, transmission output speed: rpm, engine torque signal: 28 Nm (when stationary), lock-up: open - controlled - closed (up to 2000 rpm converter slip), 1st and 2nd gears always open, 3rd and 4th gears always closed (direct drive) or controlled (regulated converter slip of approximately 50 rpm), throttle angle: 0 % no load, 99 % full load, transmission oil temperature: C. Pressures: gear engaged: 1-2-3-4 or R, lever position: P.R.N.D.3.2.1, regulator: number 3, --- mA regulator: number 4, --- mA regulator: number 5, --- mA regulator: number 6, --- mA electrovalve MV1: 1 or 0 electrovalve MV2: 1 or 0 The value varies from 159 mA to 768 mA depending on gear engaged. Digital inputs and outputs: stop lights input: 0 or 1.

Reference values

188 External controls: lever position: P.R.N.D.3.2.1, gear engaged: 1-2-3-4 or R, program(s): normal - sport - snow,
DPS: ECU selection from amongst 6 gear changing laws depending on driving conditions, normal: SK1.SK2.SK3.SK4.SK5.SK6, sport: SK5.SK6, snow: winter (position D), snow: manual (position 1.2.3). Specific program called warm up when the transmission temperature is less than 30 C when the ignition is switched on for a duration of 135 seconds.

Simulation

Activation of various electrovalves.

Downloading to the ECU

This is performed using the ELIT diagnostic tool. Downloading allows the automatic transmission ECU to be updated or to be upgraded in line with an EMC upgrade. Important: updating using downloading must always be performed on both automatic transmission and engine management ECUs.

Initialising the ECU

This is performed using the ELIT. The ECU should be initialised in the following cases: ECU replaced, transmission replaced, downloading. This consists of emptying the faults memory in order to erase all the autoadaptation values.

1 - Problems with gear changing quality Note: If gear changes suddenly deteriorate or if gears do not change at all, this may be the result of an emergency or replacement program. The customer is warned of this problem by the S and N lights both flashing simultaneously.
Warning: In an emergency program, there is a severe bang when changing from P/R or N/R.

205 Perform a road test:

note the situations in which the gear changing quality is faulty, try the 3 programs, note which gears cannot be engaged, can the reason for the complaint be reproduced over a short period, sporadically or did it just happen once? check the oil level and quality, read the fault codes with the ELIT.
2 - Transmission operating fault(s)
Faulty drive in Forward or Reverse gears. Check in the following order: oil level and quality, road test, read the fault codes with the ELIT. In some cases, it may be wise to read the fault codes of the ignitioninjection ECU.

II ANALYSE THE RESULTS

A - OIL CONDITION To focus the fault finding procedure, remove the dipstick and smell the oil: does it smell burnt? Engine running, take a small sample of oil (approximately 0.2 litres) to check whether there are any impurities in it (dust, metal particles). Abnormal operation and even destruction of a clutch will lead to the oil heating up which might be filled with impurities.
206 B - DIALOGUE IMPOSSIBLE Check: the diagnostic line, the + permanent ECU supply, the ECU supply with ignition on, the operation of the diagnostic unit, if these checks are correct, perform a test with a new ECU. C - DIALOGUE POSSIBLE
Warning: Faults are detected by the ECU and the auto-diagnostic indicates that a function is faulty. The fault may be on the component in question, its wiring or the ECU itself.
If no faults are signalled, measure the parameters. If one of the peripheral components of the transmission or the supply (+12V) is faulty, the ECU switches to downgraded mode: this downgraded mode varies depending on which component is faulty. D - VISUAL WARNING IN THE EVENT OF FAULTS
1 - Flashing of the Sport and Snow warning lights - display of last gear selected
Automatic transmission fault.
2 - Flashing of Sport and Snow warning lights (without gear being displayed)

13 - Fault 12. Pressure regulator 3 (converter operation)
Pressure regulator 3 in hydraulic unit housing 1635

Disconnected 6-5 KOSTAL

Test device(s): voltmeter. Engine off, ignition on ("lock up" open): U 1 V, (I = 159 mA), regardless of lever position ("lock up" open) The converter is only controlled from 2nd gear depending on driving conditions. Converter locked up, ("lock up" closed): U 4.6 V (I = 768 mA), regardless of lever position Test device(s): ohmmeter. R 6 ohms. Check the continuity and the insulation with respect to earth and to battery + of the connection: auto. trans. ECU - hydraulic unit.
14 - Fault 13. Pressure regulator 4
Test device(s): voltmeter. Engine running, position P: U 4.6 V (I = 768 mA) Engine off, position R: U 1 V. Other positions: U 4.6 V
Connected Pressure regulator 4 in hydraulic unit housing 1635

Disconnected 7-5 KOSTAL

Test device(s): ohmmeter. R 6 ohms. Check the continuity and the insulation with respect to earth and to battery + of the connection: auto. trans. ECU - hydraulic unit.
Switch to 4th hydraulic when driving. Switch to 3rd hydraulic when the ignition is switched on
Note: If the oil temperature fault is also present, check that the KOSTAL socket on the hydraulic unit is correctly clipped in first 15 - Fault 14. Pressure regulator 5
Test device(s): voltmeter. Engine running, position P: U 1 V, (I = 159 mA) (idle position) Engine off, position P, N, R: U 1.1 V Other positions: U 5.2 V Test device(s): ohmmeter. R 6 ohms. Check the continuity and the insulation with respect to earth and to battery + of the connection: auto. trans. ECU - hydraulic unit.
Connected Pressure regulator 5 in hydraulic unit housing 1635

3 - 29

10 - 5 KOSTAL
Note: If the oil temperature fault is also present, check that the KOSTAL socket on the hydraulic unit is correctly clipped in first
16 - Fault 15. Pressure regulator 6
Test device(s): voltmeter. Engine running, position P: U 4.6 V, (I = 768 mA) (maximum opening) Engine off, position R: U 1.1 V Other positions: U 5.2 V Test device(s): ohmmeter. R 6 ohms. Check the continuity and the insulation with respect to earth and to battery + of the connection: auto. trans. ECU - hydraulic unit.
Connected Pressure regulator 6 in hydraulic unit housing 1635

11 - 5 KOSTAL

Note: If the oil temperature fault is also present, check that the KOSTAL socket on the hydraulic unit is correctly clipped in first 17 - Fault 16. Engine torque reduction signal

49 - 34

234 C - ELECTRICAL TESTS
1 - Diagnostic connection
COMPONENTS LOCATIONS ECU CONNECTOR ECU TERMS. COMP. TERMS.
Central diagnostic socket C001 in passenger compartment

50 - 28

Test device(s): voltmeter. Disconnect the ECU connector, connect the diagnostic tool to the 30 track socket: check U = U battery on terminal 50 Test device(s): Terminal G1 ohmmeter. (brown 30 Check the continuity and the track) insulation with respect to earth of the diagnostic connection
2 - Reversing lights control
Test devices: multimeter, multifunction switch test harness:
COMPONENTS LOCATIONS ECU CONNECTOR ECU TERMS. COMP. TERMS. Reversing lights supply, fuse F12 (BBF00) CONTROL VALUES
Test device(s): voltmeter. Ignition on, check +12 Volts supply between terminal 8 on harness side and earth: U = U battery Otherwise check fuse F12
Reversing lights function 2630 2635, reverse gear info for indexed rear view mirror. Gear selector lever in position R
Test device(s): 8 - 9 black 10 ohmmeter. Gear selector lever in position R: R = track 0 ohm. connector Other positions: R = infinity. Check the insulation with respect to earth 9Check the reversing lights circuit black 10 between terminal 9 and earth: track R 2.3 ohms connector. (2630 and 2635 in parallel) Harness side
This information, provided by the multifunction switch, is independent to the automatic transmission ECU.
3 - Starting authorisation
COMPONENTS LOCATIONS ECU CONNECTOR ECU TERMS. COMP. TERMS. CONTROL VALUES
Starter motor relay 1005 Multifunction switch 1600 on transmission housing. Gear selector lever in position P, N
Test device(s): Harness side: voltmeter. 7/earth Ignition on, check the +12 Volt (black 10 tracks) supply of the relay, between terminal 7 and earth: U U battery Disconnected Test device(s): Harness side: ohmmeter. Check the starter motor relay coil 6/earth (black 10 tracks) between terminal 6 and earth: R 63 ohms Test device(s): Ohmmeter. 6/7 (black 10 tracks) Gear selector lever in position P, N: R = 0 ohm. Other positions, R = infinity

238 Test device(s): voltmeter, harness 4187-T, terminal box:

LEVER POSITION

0V 0V 0V 0V 0V U battery U battery U battery U battery U battery U battery U battery 0V
U battery U battery 0V 0V 0V 0V U battery U battery 0V U battery U battery U battery U battery
0V U battery U battery U battery 0V 0V 0V U battery U battery U battery U battery U battery U battery
0V 0V 0V U battery U battery U battery U battery U battery U battery U battery 0V U battery U battery
Combinations marked "*" correspond to intermediate positions. The role of combinations marked "*" is to have just a single line changing state when changing from one recognised position to another.

7 - Hydraulic unit

Test device(s): ohmmeter, KOSTAL test harness or harness 4187-T and terminal box:

52 COMPONENTS

EL1 EL2 REG3 REG4 REG5 REG6 Input speed Output speed Oil temperature

R 830 ohms

R 32 ohms R 32 ohms

KOSTAL CONNECTOR 12

R 6 ohms R 6 ohms R 6 ohms R 6 ohms

R 830 ohms

X: resistance which varies with temperature

4HP146D

123456789-
Electrovalve 1 (green base, violet and grey wires) Electrovalve 2 (green base, violet and green wires) Pressure regulator 3 (black base, violet and yellow wires) Pressure regulator 4 (black base, violet and red wires) Pressure regulator 5 (black base, violet and blue wires) Pressure regulator 6 (black base, violet and white wires) Transmission input speed sensor (turbine) (brown wires) Transmission output speed sensor (yellow wires) Oil temperature sensor

240 D - OPERATION

1 - Operation of electrovalves and pressure regulators
SELECTOR LEVER POSITION P R N

GEAR ENGAGED

OPERATION OF ELECTROVALVES ** EL1 EL1
EDS3 159mA 159mA 159mA 159mA X X X 159mA X X 159mA X 159mA
OPERATION OF PRESSURE REGULATORS EDS4 EDS5 EDS6 768mA 159mA 768mA 159mA 159mA 159mA 768mA 159mA 768mA * 768mA 768mA 768mA 768mA 768mA 159mA 768mA 159mA 768mA 159mA 159mA 159mA 768mA 768mA 768mA 768mA 768mA 159mA 768mA 159mA 768mA 768mA 768mA 768mA 768mA 768mA 159mA 768mA 768mA 768mA
** status 1 : status 0 : * : X :
electrovalve operated electrovalve at rest except when snow program selected varies depending on converter lock-up 159 mA "lock up" open 768 mA "lock up" closed (converter lock up)
When the 2 electrovalves are not operated, the automatic transmission is put into 3rd hydraulic when the ignition is switched on.
Warning: In 3rd hydraulic, reverse gear can be selected but this action produces a large bang. Note: The currents of the pressure regulators shown when reading parameters using the diagnostic tools are the reference values and not the measurements of the operating currents.

Compiled By

Email: kmurali_sg@yahoo.com [July 2004]

K. Muralidharan

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Several great sages have expounded the greatness of Shri Gayatri Mata and Gayatri Mantram. Several books are also available. Perhaps the following two verses would summarize the essence clearly and succinctly.

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Shri Yogavalkya Maharishi declares that Shri Gayatri is the mother of all Vedas (in other words, the essence of all Vedas) and is the destroyer of all sins; there is nothing beyond Shri Gayatri in both Bhu loka and Deva loka.

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The above sloka from Kurma Puranam, while emphasizing that Shri Gayatri Devi is the mother of all Vedas, declares beyond doubt that Shri Gayatri purifies and sanctifies the Universe and there is no other Mantra that is beyond Gaytri Mantram and it indeed is Vigyanam. The References/Links section of this compilation points to various sources of information on Shri Gayatri Devi, Gayatri Mantram, etc.

GAYATRI MANTRAM

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MEANING OF GAYATRI MANTRAM Word

Meaning

The primeval sound The Physical World The Mental World The Spiritual World That (Transcendental Paramatma)

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The Sun; the Creator The most adorable; highest Luster, Effulgence, Tejas Resplendent, Supreme Lord We Meditate Upon
The intellect, understanding Who (May This Light) Our Enlighten, Guide, Inspire

MEANING

Supreme Spirit (radiant Sun) who directs and inspires our intelligence and understanding.
We meditate on the most adorable

OTHER GAYATRI MANTRAS

Turiya Gayatri Mantram ( !* * +

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The above Turiya Gayatri Mantra is considered to be very sacred. There are differing accounts as to whether this mantra can be chanted by one and all or it requires formal initiation into this mantra by a Sat Guru. But according to Srimad Devi Bhagavatham, this mantra must be chanted as part of daily Anushtanam (Sandhavandana) immediately after Gayatri Japa. Those who would like to chant this mantra are advised to seek the guidance of eminent scholars.
Poorna Gayatri Mantram ( (
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The above Gayatri Mantra contains the important Bijakshara (Seed) Mantras of various forms of Shakti (Kameshvari, Maha Lakshmi, Sarasvati, Bhuvaneshvari). Chanting this gives the benefit of meditating on all these forms. But it is important to note that this mantra should NEVER be chanted without proper initiation through a Sat Guru.

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Sanjivini Vidya Mantram (*P ! , , !
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The above mantra, containing 56 Aksharas (syllables), is a blend of Gayatri Mantra and Mrutyunjaya Mantra. It is said that this mantra was meditated upon by Shukracharya, Ravanan, Sage Vishvamitra and later by Sage Vasishta, Sage Parashara, Sage Atri, Sage Jamatagni, Shri Anjaneya etc. But it is important to note that this mantra should NEVER be chanted without proper initiation through a Sat Guru.

A few Dhyana Slokas for Gayatri, Savitri and Saraswati are given below. These slokas are drawn from various sources such as Devi Bhagavatam. This is not exhaustive.
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The following Gayatri Avahana/Upasthana mantras are available in Maha Narayana Upanishad in Rig Veda [Prsna : 4, Anuvaka : 34-36]. Parts of these mantras are used for Gayatri Avahanam/Upasthanam in Sandhya Vandanam.

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As Kali Yuga is characterized by materialistic tendencies and straying far away from Dharma, it is believed that the sages have cast curses on various sacred mantras to become ineffective in Kali Yuga in order to prevent these mantras from being misused. The following mantras seek to remove the curses of Lord Brahma, Sage Vasishta and Sage Vishvamitra on Gayatri Mantram. In Devi Bhagavatam, it is given that the following Shapa Vimochana Mantras should be chanted prior to Gayatri Japam, though this practice is not strictly in vogue. People who want to use the following mantras are advised to consult learned people for proper procedure.

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The procedure given below for Gayatri Mantra Japam is different from the procedure used in daily Sandhya Vandanam. The following procedure is normally used by Gayatri Upasakas after due initiation. The following Japa is preferably done after Puja for meditating on Gayatri.

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(Fold both hands together and rotate inwards near heart)
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(Touch heart )

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(Rub the middle of both thumbs with respective fore finger tips) (Rub the middle of both fore fingers with respective thumb tips)
(Rub the middle of both middle fingers with respective thumb tips) (Rub the middle of ring fingers with respective thumb tips) (Rub the middle of little fingers with respective thumb tips) (Rub both sides of palms with other hand)
(Touch heart with fore/middle/ring fingers) (Touch head with middle/ring fingers)

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(Touch scalp hear with thumb)

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(Cross hands and touch opposite shoulders with all fingers) (Touch the middle of eye brows with fore/middle/ring fingers) (Tap left palm with right fore finger)

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(Rotate right hand over the head once clock-wise)

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(The above mantra must be chanted according to Vedic notes, in unison with Shruti and with FIVE pauses as given above. It is claimed that chanting otherwise bears no fruit at all and even attracts sin. So, chanting it a fewer number of times correctly is more preferable than chanting it hundreds of times incorrectly and in haste. Repeat the above mantra as many times as spelt out in the Sankalpa above. Typically it should be in multiples of 108 or a Mala). 14
(Repeat as above except the following last line as below) (Rotate right hand over the head once anti-clock-wise)
(Repeat as above) (Repeat as above)
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Chanting the following Ashtottara Shata Namas (108 Names) of Gayatri thrice a day with devotion is said to bestow Mantra Siddhi, apart from granting all of ones wishes.
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This is another Ashtottara Shata Nama stotram (108 Names) on Sri. Gayatri. The Phalashruti at the end of the stotram declares that chanting this stotram grants one all wishes, destroys all sins including Brahma hatya, grants health and wealth and ultimately gives Moksha (salvation).

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The following Sahasra Nama (1008 Names) Stotram of Gayatri is taken from Srimad Devi Bhagavatam. Lord Narayana declares that this Sahasranama was recited at the start of creation of the universe and is the most sacred of all. Chanting the stotram will bestow wealth, children, health and ultimately salvation while destroying all the sins. This Sahasranama, though can be chanted any time, is recommended for chanting on an Ashtami (8th day from New/Full moon day) for accruing special benefits.

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r + + ' *%
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This is another Sahasranama (1008 Names) Stotram of Sri. Gayatri taken from Rudra Yamalam. The greatness of this stotram can be understood from the extensive Phalashruti given at the end. Lord Shiva declares that chanting this Sahasranama is equivalent to chanting Seven Crores of various Maha Mantras, chanting Rudram crores of times, donating thousand crores of cows and performing Ashwa Medha Yaga one crore times.
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\b \d \g

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2 + r +% 3@ %

$ m<% * ! C 5

= * ^ + U '+% +! %

\h '= + 5

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` Z F + s 0 ` = * ^

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! *' #@ *

0 +) ' '= * '= Z + R '= ,

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? @ N % ! ( N % FC N % ! N % ! N % X N % ! ( /0 + N % 3 ' N % ? R N % ' N % 5 N % + *' 9 N % 'S r + N % N % , C N % 3 , *' N % N % N % = '+ N % 5 N % N % - N % R N % GU N % N % F *' N % ` N % 9+ N %
The following Stuti on Sri. Gayatri is taken from Srimad. Bhagavatam. Though this stuti can be chanted anytime, it will especially be beneficial to chant this while taking bath. This Stuti is said to destroy one of all sins and bestow wealth and health.

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The power of Gayatri Hrudayam can be known by its elaborate Phalashruti available at the end of the Stuti. In a nutshell, chanting Gayatri Hrudayam is said to be equivalent to chanting Gayatri Mantra for 6000 times and clears one of all sins. Proper usage and procedure of the following stuti may be sought from eminent scholars.

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Srimad Valmiki Ramayanam contains 24,000 Slokas (verses). Sri. Gayatri Maha Mantra contains 24 aksharas (syllables). Sri. Valmiki Maharishi has composed Srimad Ramayanam in such a way that these aksharas are used as the starting syllable for every 1000th verse. Those 24 slokas which contain the Sri. Gayatri Mantra aksharas are known as Gayatri Ramayanam and are given below. It is believed that chanting Gayatri Ramayanam gives the benefit of chanting both Gayatri Mantra and Valmiki Ramayana.
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1. Sri Gayatri Temple at Jagatsukh near Manali in Himachal Pradesh, India. Ancient temple with intricate woodwork with modern marble image of Gayatri. 2. Sri Gayatri Temple at Shanti Kunj near Hardwar, Uttar Pradesh, India. 24 images of Gayatri near the Saptarshi Ashram with Yantras on the banks of the Ganges. 3. Bhagavat Gita Mandir. http://www.templeofcosmicreligion.com/htms/artHTM/GitaMandir.htm#anchor1846754. 4. Sri. Gayatri Temple, Pushkar, near Allahabad, India. http://www.indiayogi.com/content/holycities/pushkar.asp. 5. Sri. Gayatri Temple, Shahi Baug, Gujarat India. http://revenuedepartment.gujarat.gov.in/applications/content.asp?Content_Id=768&Title_ Id=195&language=G&SiteID=8. 6. Sri Gayatri Temple, Yeshwantapura, Bangalore, India 7. Sri Gayatri Temple, Mysore, India 8. Sri. Gayatri Temple, Datta Kshetra, Srikakulam, Andhra Pradesh, India. 9. Sri. Gayatri Temple, Arunachal Pradesh, India. 10. Sri. Gayatri Temple, Badrinath, India. 11. Sri. Gayatri Temple, Chidambaram, Cuddalore District, Tamil Nadu, India
12. The Mantric Approach of the Vedas. American Institute of Vedic Studies. http://www.vedanet.com/Gayatri.htm. 13. Gayatri Info. Pandit Shri Ram Sharma Acharya. http://www.gayatri.info. 14. The Meaning of Gaytri Mantra. http://www.eaglespace.com/gayatri.html. 15. A Commentary on the Gayatri. http://www.blavatsky.net/theosophy/judge/articles/commentary-on-the-gayatri.htm. 16. The Gayatri Mantra. International Sai Organization. http://www.sathyasai.org/devotion/prayers/gayatri.html. 17. Gayatri Siddh Peeth. http://www.geocities.com/gayatrisiddhpeeth/gayatri/mantra.htm. 18. Experience The Fruit of Gayatri Meditation. Mr. M. P. Bhattathiry, Retd. Chief Technical Examiner to Government of Kerala, India. http://1stholistic.com/Prayer/hol_experiencethe-fruit-of-Gayatri-Meditation.htm. 19. Gayatri Japa Day. Sri. Swamy Sivananda. http://www.spreadhinduism.com/gayatri.html. 20. Gayatri Mantra. http://www.salagram.net/sstp-Gayatri.html. 21. Gayatri Mantra. http://www.bangalorenet.com/gayatri/. Page : 122
22. Gayatri Mantra. Vedanta Letters. Sanjiv R. Malkan. http://malkan.com/edufiles/gayatri.pdf. 23. The Philosophy of Gayatri : An Introduction. http://www.akhandjyoti.org/ArticlesJF03/Gayatri.html. 24. Gayatri The Cosmic Power. http://www.awgp.org/multimedia/gayatri.ppt. 25. The Greatest Mantra. http://pavanaputra.tripod.com/gayatri/greatest-mantra.htm. 26. Gayatri Pariwar. http://members.tripod.com/SuketuJ/Shantikunj/Main.htm, http://groups.msn.com/GayatriPariwar.

1. Introduction Gayatri Mantrartha Deepika. Swami B.G. Narasingha. Mandala Publishing Group. http://www.mandala.org/cgi-bin/MDLstore.pl. 2. Gayatri Mantram Revealed. Sri Chaitanya Saraswath Math. 3. Gayatri The Highest Meditation. SatGuru Sant Keshavdas. http://gaybooks.shoppingsavvy.com/Gayatri-The-Highest-Meditation.html 4. Gayatri Maha Mantra. http://www.arpana.org/publications/gayatri-h.htm. 5. Gayatri Rahasyam. Ashok Kumar Gaud Shastri. Chaukhamba Surabharati Prakashan, K 37/117, Gopal Mandir Lane, PO Box 1129, Varanasi 221001. Telephone : 333431, 335263. 6. Gayatri Pariwar has published several books such as Gayatri Sadhana The Truth and Distortions, Gayatri Chalisa, Gayatri The Omnipotent Primordial, Gayatri Sadhana Why and How, Gayatri A unique solutions to problems, The Process of Gayatri Yagna, etc. http://www.awgp.org/english/books/listofbooks.html.
1. Devi Gana Sudha. Saint Ogirala Veera Raghava Sarma (Sri. Gnananda Teertha). Sri. Gnananda Teertha was a great Gayatri Upasaka and has composed about 86 compositions on Sri. Gayatri in various Carnatic Ragas. He has also invented a new raga called Pranavapriya. Further details about this saint may be obtained from http://ovrs.20m.com/com.htm.

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