BMW 3 series E46

Since 1998 of release

Repair and car operation



The BMW of 3 series Е46
- Cars BMW 3 (Е46)
   Identification numbers of the car
   Acquisition of spare parts
   Technology of service, the tool and the workplace equipment
   Поддомкрачивание and towage
   Start of the engine from the auxiliary power supply
   Checks of readiness of the car to operation
   Automobile химикалии, oils and greasings
   Diagnostics of malfunctions
   Controls and operation receptions
   Controls and devices
   Refuelling
   Keys, the uniform lock and anticreeping system
   Security сигнализация*
   window raiser
   The hatch with podemno-sdvizhnoj крышкой*
   Seats
   Adjustment of position of a steering wheel
   Mirrors
   Safety systems
   The lock of ignition and engine start
   Lay brake
   Manual box of a gear change (Manual transmission)
   Automatic transmission (АТ) *
   The lever of the switch of indexes of turn / a light signal
   Screen wipers and washer
   Heater of back glass
   Темпостат (automatics of maintenance of the set speed) *
   The alarm system of emergency rapprochement at a parking (PDC) *
   System of automatic stabilisation of stability with a regulator of a twisting moment of engine ASC+T/System of the dynamic control of stability DSC*
   The monitoring system of pressure of air in tyres (RDC) *
   Illumination and light devices
   Heater, ventilation and the conditioner of air of salon
   The salon equipment
   Обкатка
   Features of driving of the car
   The Katalitichesky converter
   Antiblocking system of brakes (ABS)
   Disk brakes
   Brake system
   Luggage spaces
   Automobile телефон*
   Readjustment of headlights
   Cowl
   Unlocking of a cover of the refuelling hatch manually
   Drive podemno-sdvizhnoj hatch covers вручную*
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes



Diagnostics of malfunctions

In the given Section the most simple scheme of finding-out of the reasons of malfunctions and the refusals occurring in knots and systems of a vehicle is offered. Refusals and their possible reasons are broken into groups on the basis of the relation to certain components or car systems, as for example the engine, cooling system, etc., besides, in the text references to Chapters and Sections concerning the given problems are given.

Remember that successful end of search of causes of defect at all is not the black magic accessible to only skilled professional mechanics, and is defined by a combination of certain knowledge and the patient, regular approach to problem research. To move always follows from simple to difficult, to lead up each check to the logic end and to try not to pass the obvious facts – everyone can forget to fill fuel in a fuel tank or to leave for the night included lighting devices.

And at last, always it is necessary to try to make an accurate picture of development of malfunction and to undertake corresponding steps on relapse prevention. If refusal of an electric equipment was the result of infringement of quality of contact, check up at the same time a condition of all other contacts and electric sockets of system. If the same safety lock some times continues to fuse successively, there is no sense in its further replacement – it is necessary to try to find out a cause of a failure. Remember that failure of a minor component can be a sign of infringement of functioning of more important knot or the whole system.

Diagnostics of electronic systems E46 – the general data on diagnostic devices

Into structure of the electronic equipment of the car enter:

Electronic control system the petrol engine
Siemens MS 42.0
Electronic control system the diesel engine
Bosch 3.0
System of antiblocking of brakes ABS
Dynamic system of stabilisation of stability built in in ABS – DSC3 on early models Е46 anti-slip system – (Teves ABS/ASC Mark20ET)
System of maintenance of additional safety SRS
MRS2, MRS3
АТ with electronic control EGS/AGS
A5S 360R Siemens AGS 20

Electronic system of the xenon headlights

1 Check of serviceability of functioning of components of systems of injection and decrease in toxicity of the fulfilled gases is made by means of a universal digital measuring instrument (multimeter). Use of a digital measuring instrument preferably for the several reasons. First, on analogue devices it is difficult enough (at times, it is impossible), to define result of the indication to within the 100-th and thousand shares while at inspection of the contours including in the structure electronic components, such accuracy takes on special significance.

The second, the reason that fact is not less important that the internal contour of a digital multimeter, has high enough impedance (internal resistance of the device makes 10 мОм). As the voltmeter is connected to a checked chain in parallel, accuracy of measurement by that above, than the smaller current will pass through actually device. The given factor is not essential at measurement concerning high values of pressure (9 12), however there is defining at diagnostics of elements giving out low-voltage signals, such, as, for example, a l-probe where it is a question of measurement of shares of volt.

2 For diagnostics of electronic systems of the engine, automatic transmission, ABS, SRS special diagnostic scanners (Pointer) or testers (Retriever) with a certain cartridge, a universal cable and a socket are applied. Besides, it is possible to apply the expensive specialised automobile diagnostic computer specially developed for full diagnostics of the majority of systems of modern cars to this purpose (for example, ADC2000 firms Launch HiTech), or the usual computer with a set of the interface devices.
3 Basically, reading written down in memory of system of self-diagnostics of codes of malfunctions can be made also on the indicator “check up the engine” on a control panel (address to the Head an engine Electric equipment).
4 Scanner only reads out the malfunctions brought memory and clears memory of malfunctions. Besides the scanner supports only report ISO. The tester in addition can make active and show the current data and supports reports SAE and ISO.

All cartridges for a tester can be used and in the scanner. Thus functions will be limited only by reading and memory clearing.

Firm ToolRama devices can be applied to diagnostics, Inc, for example. (3500 NW Boca Raton Blvd., Boca Raton, Florida, 33431, USA 1 877 866 5726 – 561 750 4511 – 561 338 8447 FAX):

Tester R000 with cartridge Т051D, scanner P000 with cartridge Т041,
Universal cable N000,
Socket N001.

For the majority of cars of release since 1996 supporting report SAE/ISO 9141 OBD II cartridge OBD II carrying out following functions can be used:

• Reading and removal of codes of malfunctions OBD II. Reflexion of results of tests of the gauge of oxygen.
• the Continuous control of systems of ignition, injection and components.
• Reflection of the list of the current given and fixed unstable refusals:

Absolute pressure in the inlet pipeline;
Pressure of the gauge of oxygen;
Temperature of a cooling liquid of the engine;
Settlement loading of the engine;
Speed of the car;
Quality of fuel;
Air expense (on weight);
Ignition advancing;
Position throttle заслонки;
Temperature of soaked up air.

In addition to codes of malfunctions "P0", the device also reflects the expanded codes "P1" for models Acura, Audi, BMW, Chrysler, Dodge, FORD, Geo, GM, Honda, Hyundai, Infinity, Kia, Lexus, Lincoln, Mercury, Mazda, Mercedes, Mitsubishi, Nissan, Porsche, Saturn, Seat, Skoda, Subaru, Suzuki, Toyota, Volvo, VW.

Recently, at diagnostics of control systems by the engine of modern cars such reading out devices, as manual scanners of type, for example, Actron Scantool became absolutely irreplaceable or
AutoXray XP240


Features of specialised automobile diagnostic device ADC2000:

the Built in 4-channel oscilloscope with standard preset for 19 gauges.
the Analyzer of system of ignition for check primary and secondary chains (with pressure to 100кВ) on systems with the distributor or separate coils of ignition – with the control of time of burning, peak value of pressure, a corner of an advancing of ignition, a current, and turns.
the Two-channel multimeter with digital and graphic data presentation on pressure (150В), frequency (1100кГц), a current (150А).
the Built in scanner for the basic systems on cars: VAG, MB, BMW, Volvo, Toyota/Lexus, Mitsubishi, Nissan, Honda, Mazda, GM, Ford, Chrysler, Daewoo, Hyundai, Kia, Samsung, and so on cars supporting report OBD–II.
cartridges are not required – you can execute updating of programs of the device, having downloaded necessary updatings from the Internet.
Programnoe maintenance for communication with the personal computer.

The information on use of these devices contains in applied documents. About these devices you can get acquainted with details on sites www.programatools.com, www.lasn.com.

For diagnostics carrying out we recommend to you to address for the qualified help of experts HUNDRED.

The diagnostic socket of system of onboard diagnostics OBD II is located under the panel of devices


Contacts of a diagnostic socket for used reports:

ISO 9141–2 Contacts 4, 5, 7, 15, 16
J1850 PWM Contacts 2, 4, 5, 10, 16
J1850 VPW Contacts 2, 4, 5, 16 (without 10)

Report ISO 9141–2 (for Europe and Asia) is identified by presence of contact 7 and absence of contacts 2 and-or 10 on a diagnostic socket.

Reports SAE J1850 VPW (Variable Pulse Width Modulation) – General Motors – or SAE J1850 PWM (Pulse Width Modulation) – American Ford – are identified by absence of contact 7.

All three reports of data exchange work through standard cable OBD–II J1962.

№ a conclusion Appointment
1 It is set by the manufacturer
2 Line Bus +, SAE J1850
3 It is set by the manufacturer
4 Connection with the case
5 Case – an alarm conclusion
6 It is set by the manufacturer (CAN high level, J–2284)
7 Line K, ISO 9141
8 It is set by the manufacturer
9 It is set by the manufacturer
10 Line Bus – SAE J1850
11 It is set by the manufacturer
12 It is set by the manufacturer
13 It is set by the manufacturer
14 It is set by the manufacturer (CAN Low level, J–2284)
15 Line L, ISO 9141
16 Plus of the battery through a safety lock. Energised at any position of the lock of ignition
Codes of malfunctions of system OBD II are led in Specifications to the Head an engine Electric equipment.

20-contact diagnostic socket BMW is located under a cowl of an impellent compartment at the left


Appointment of conclusions

The characteristic

Value

Data

Data

Data

Data

Data

Data


The engine

If the engine is not started, it is necessary to analyse a situation. That the engine in general could be started, two basic conditions should be satisfied. In cylinders the mix should arrive fuel-air, and on a spark plug the spark should be developed. Therefore, first, it is necessary to check up, whether fuel moves. As thus it is necessary to operate, it is described in the Head of the Power supply system, injection and release.

To define, whether the spark is developed, it is necessary to turn out candles, to insert into tips and separately to put to weight. Thus a tip or a cable of ignition do not hold hands, and use well isolated nippers. Ask the assistant to start the engine. If the spark does not slip, define malfunction being guided by the Head an engine Electric equipment.

The engine is not turned at attempts of its start

1 corrosion of plugs of the battery or ослабло fastening on them of tips of wires Takes place. Check up a condition of plugs and tips. Tighten клеммные clips, if necessary remove corrosion traces.
2 the battery Is discharged or faulty. If tips of wires are found pure and reliably fixed on battery plugs, turn the ignition key in position ON, then include head headlights and-or windscreen cleaners. If the given electric equipment does not function, the battery is discharged.
3 Transmission it is inexact it is established in position “Р” (АТ) or on neutral transfer (Manual transmission), or coupling is not completely squeezed out.
4 conducting in a chain of system of start or ослабло fastening of wires on plugs Is torn off. Check up a condition of wires, plugs and electric sockets of the battery, the traction relay of a starter and the ignition lock.
5 Gear wheel of a starter is jammed in a gear wreath of a flywheel. On the models equipped Manual transmission, establish it on transfer and, потолкав manually the car, turn that its engine. At the first possibility remove a starter and check up a condition of a gear wheel and a gear wreath of a flywheel.
6 the traction relay of a starter (the Head an engine Electric equipment) Is faulty.
7 the starter (the Head an engine Electric equipment) Is faulty.
8 the ignition lock Is faulty.


The engine is turned, but not started

1 start is incorrectly made

Order of start of the petrol engine:


Cock a lay brake, squeeze out a coupling pedal. On models with АТ press and keep a brake pedal. On АТ establish the selector in position “Р” or “N”. Do not give some gas. Turn the ignition key and keep, while the engine will not be started. If the engine during 20 with is not started or at once will stop, repeat start process at half pressed pedal of gas. As soon as the engine will be started, release the ignition key.

On a frost more low-15S and at height more than 1000 m above sea level: Start spend not less than 10 with at half pressed pedal.

Necessarily at once begin movement. If there is a strong frost allow to the engine to work during 30 with.

If the engine is not started, through 10 with, interrupt start and repeat it through a floor of minute.

Some unsuccessful attempts of start can damage каталитический the converter, since successively. Not burnt down fuel взрывообразно burns down at heating in каталитическом the converter.

Only on the hot engine after start add a few gas.
2 the safety lock Is faulty:

– The electric fuel pump
– Electronic system of injection
Concerning check of safety locks address to the Head the Onboard electric equipment.
3 Empty fuel tank.
4 malfunction in system of injection of fuel Takes place.
5 the battery (the engine is turned too slowly) Is discharged. Check up electric equipment functioning.
6 Korrodirovany клеммные connections of the battery or ослабло their fastening.
7 the fuel pump (the Head of the Po