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 Заголовок сообщения: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #1  Добавлено: 14 авг 2008, 15:47 
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может кому пригодится инфа по 10 клапанникам Авди

ECU Fault Code Retrieval, ECU Output Tests

1989-91 Audi 200 Turbo
1989-90 Audi 200 Turbo Quattro With 10 valve 5 cylinder Turbo Engine

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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #2  Добавлено: 14 авг 2008, 15:49 
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Introduction: Engine Control Unit (ECU) Fault Code System

The 1989-91 Audi 10 Valve 5 Cylinder Turbo engines have Engine Control Units equipped with a "self-diagnostic system". It will perform 17 input checks and 6 output system checks on the later dual knock sensor MC engine in the 1989-90 200TQ and 1989-91 200T.

Anytime an engine problem is occurring, this Fault Code system should be used to first locate any system fault codes that have been recorded [3]. If the vehicle starts and runs:You should drive the car for a minimum of 5-10 minutes and raise the engine speed above 3000 RPM and ensure that the manifold pressure goes above 1.2 bar. You want the engine coolant temp to get above 80C, (176F). You should accelerate at full throttle in 3rd gear to exercise this diagnostic system correctly.

NO START CONDITION: Crank the engine with the starter for at least 5 seconds and make sure you leave the ignition on after cranking the engine during the no start condition. After doing the road test or the "No Start" cranking test, proceed to the section below for reading any fault codes stored during this process.

Fault Code Reading, 10 Valve 5 Cylinder Turbo Engine

1989-90 200 Audi Turbo Quattro

1989-91 200 Audi Turbo

This procedure applies to the later 1989 200 Turbo after approximately VIN 44 KN 020000 and 1989 200 Turbo Quattros approximately after VIN #KN038262 with dual knock sensors and the MAC14 ECU. It also applies to the 1990 200TQ and 1990-91 200 Turbo.

The MAC14 ECU fault code system has a non volatile memory for storing the fault codes which means that they can be read later even if the car has been turned off after the road test [3].

There should be three connectors grouped together underneath the drivers side dashboard, from left to right, they should be arranged as follows: One black, one brown and one blue.


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #3  Добавлено: 14 авг 2008, 15:53 
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Using the Factory VAG1551, VAG1552 scan tools, a Palm Device diagnostic system, or using a PC diagnostic interface and software

If you are using VAG1551 or VAG1552 Factory Scan tool leads, you will insert the black connector lead into the black diagnostic connector, and the white connector lead to the "Brown" diagnostic connector under the dashboard. The Blue connector isn't used.




The Palm Device and the PC Diagnostic systems with OBD-II connector will normally require the VAS 5051/2 adaptor cable to connect to the black and brown diagnostic connectors.


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #4  Добавлено: 14 авг 2008, 15:57 
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Using Check Engine Light to Blink out the codes:

These three connectors are used to access the diagnostic capabilities inside the Engine Control Unit IF you are using the LED to blink out the codes. The fault codes can also be blinked out by using a jumper wire connected for 4 seconds across the diagnostic connectors.

See details below for this procedure. The "Check" engine light in the instrument panel or a separate light bulb or LED is used to flash out the fault codes.

IMPORTANT DETAILS: This yellow "Check" engine light will normally come on when the ignition is turned on "if" the bulb is installed in the dash. The operators manual refers to this "Check" engine light as the "Emission Control System (ECS) malfunction Indicator Light." Some of the 200TQ's have no "check" engine light bulb installed in the dashboard assembly even though the circuitry is there.

Normally this bulb is installed in-between the "Airbag" light and the "Door Open" warning light on the right side of the dash and as mentioned, this light should come on when the ignition key is first turned on. You can partially pull the dash console out on the right side and reach around and install this "Check" Engine light bulb.

Use one of the dash light bulbs, Osram 2721 (12 volt, 1.2 Watt) that pushes into place in the empty twist lock socket for the Check Engine Light.

If you do not have the light bulb installed in the dash, you will need to connect an LED or low wattage light bulb (12 volt, 1.2 Watt) across these diagnostic connectors in order for the ECU to blink this light so you can read out the fault codes.

Vehicles produced for sale in California should have this "Check" Engine light bulb installed in the dash. Details on building the LED fault code light can be found at the bottom of this page. A short jumper wire is also required to initiate the diagnostic sequence.

Each diagnostic connector has two terminals in it. They are arranged as follows: These vehicles may have fuel pump relays which have the 2 terminal connections at the top of the relay. These contacts were used on older Audis to initiate the fault code sequence by inserting a fuse into the top of the fuel pump relay for four seconds. This procedure may also work on the Audis which have the colored fault code connectors under the dashboard.

There SHOULD NOT be a fuse permanently installed in top of these fuel pump relays, as it may prevent the normal retrieval of the fault codes. Black, Brown and Blue Connectors Used to "Blink" out the Codes with LED


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #5  Добавлено: 14 авг 2008, 15:58 
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NOTE: SOMETIMES THE POSITION AND LOCATION OF THESE CONNECTORS HAS BEEN CHANGED, SO CHECK THE COLOR OF THE CONNECTOR MAC14 ECU:

The Black Connector has +12V and Ground, the top terminal has +12V which is connected to the ECU pin 33, the lower terminal in the black connector is connected to ECU ground, pin 9 or 18. The brown connector has the top terminal connected to ECU pin 28, the lower terminal is connected to ECU pin 5. The blue connector top terminal is connected to ECU pin 31.

As mentioned, with the engine idling, you activate the fault code system by connecting the jumper wire across the two terminals for four seconds and then remove the jumper, the ECU will then begin the sequence to blink out the fault codes via the instrument panel "Check Engine" light or by flashing the LED connected across the diagnostic connectors.


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #6  Добавлено: 14 авг 2008, 16:00 
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ADDITIONAL FAULT CODE INFO:

NOTE: If the ignition is turned on, but the engine is NOT running and you check the fault codes, you may get a "false" code 2111 or 2112 (RPM and TDC sensors) because the engine is not turning. NOTE: The fault code reading procedure will be canceled if the engine RPM is raised above 2000 on the MC 10V engines or if the ignition is turned off for all models .

Each fault code consists of four groups of pulses. The exact sequence for each code is a start sequence of 2.5 seconds with the lamp on, and 2.5 seconds pause with it off.

The codes then follow as a half-second pulse with the LED light on, separated by a half-second pause with the LED light off, with a larger pause of 2.5 seconds between each set of pulses.

Example:If no fault codes are stored, code 4444 will be displayed by the ECU flashing the LED.

The ECU will flash the LED on and off as follows after the jumper wire is inserted into the connectors for 4 seconds and then removed. LED on (2.5 sec), LED off (2.5 sec)

Now here comes the code 4444

Blink, pause, Blink, pause, Blink, pause, Blink, (2.5 second pause)

Blink, pause, Blink, pause, Blink, pause, Blink, (2.5 second pause)

Blink, pause, Blink, pause, Blink, pause, Blink, (2.5 second pause)


Blink, pause, Blink, pause, Blink, pause, Blink, (2.5 second pause)

2322 (Air Temperature sensor) would be displayed as follows:


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #7  Добавлено: 14 авг 2008, 16:00 
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In other words..... Blink, pause, Blink, (2.5 second pause)

Blink, pause, Blink, pause, Blink, (2.5 second pause)

Blink, pause, Blink, (2.5 second pause)

Blink, pause, Blink, (2.5 second pause)

The sequence of displayed pulses will repeat until the system is stepped to the next fault code stored (if any) by connecting the jumper wire across the connectors again for 4 seconds. The LED will blink once at 2.5 second intervals to indicate that the last error code has been read.

Use a note pad to write down the fault codes as they are displayed and then check for the specific fault code description listed in the section below. Check the Bentley Manual for additional information.

In my 1989 200TQ, I have permanently connected a momentary push button switch across the two jumper wire connections so that I only need to push this button to activate the fault codes. I ended up installing the "check" engine light bulb back in the dash to avoid having to use the LED connected under the dash. NOTE: If you connect an LED permanently across these diagnostic connectors, you will notice that the LED "glows" dimly all the time even with the ignition off.

The LED glows dimly because a very small current is flowing from the ECU through the LED to the +12V supply when the LED is connected to the diagnostic connectors. This current flow is only 0.4 milli amps, (400 micro-amps), or stated another way, 0.0004 amps.

It is probably better to install the Dash mounted "Check" Engine light bulb than to permanently connect the LED across the diagnostic connectors.

NOTE: In some cases, on these later 1989-90 200TQ vehicles, if the "Check" Engine light bulb "is" installed in the dashboard, then inserting a spare fuse into the fuel pump relay fuse slot "may" initiate the fault code reading sequence as was done in the 1986-88 5000TQ vehicles. Some of the later 200TQ's may have a slightly different fuel pump relay which no longer has the fuse contacts installed.

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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #8  Добавлено: 14 авг 2008, 16:01 
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OTHER DETAILS:

Fuse #21 supplies power to Pin 33 on the MAC14 ECU for maintaining the fault code memory. This fuse also supplies the +12V for the black fault code connector underneath the dash. Check this fuse #21, if the fault codes do not blink out using the LED. Fuse #28 supplies +12V to the CIS frequency valve, the Charcoal canister solenoid, the Waste Gate solenoid, the charcoal filter cut off valve. Check this fuse if these components are not operating correctly.

FAULT CODE ERASING

NOTE: You can remove fuse #21 for a few minutes to erase any stored fault codes in these vehicles. If you conduct the OUTPUT tests, the fault code memory will also be erased at the end of the procedure. NOTE: Fuse 28 is located under the hood in the fuse box on the "side" rail of the fuse panel perpendicular to the other fuses.

These fuses on the side rail are NOT Spare fuses! The fuse may be underneath a small red cover with Motor - Moteur on top.

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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #9  Добавлено: 14 авг 2008, 16:02 
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Output Tests

1989-90 200 Turbo Quattro,

1989-91 200 Turbo

There is also an "output test" mode that will enable the MAC14 ECU to turn the fuel pump on and also cycle the engine electrical solenoids on and off to verify they are working correctly [3]. Fuse #28 supplies +12V to the ECU controlled solenoids, so check this fuse if they do not operate.

To activate the Output Tests, you must first connect the jumper wire to short across the Fault Code Connectors as shown and THEN turn on the ignition to start the output tests. You can also connect the LED to read out the Output test codes.
(Test #1) The code 4433, will be shown and the fuel pump will be then turned on. NOTE: The fuel pump will run during the next 5 output tests.
Remove the jumper wire and then Reconnect the jumper wire again for 4 seconds to go to the next output test:
(Test #2) Code 4441, will be displayed and the CIS frequency valve will be cycled at 50% duty cycle.
Connect the jumper wire again for 4 seconds
(Test #3)Code 4442, Waste Gate Solenoid will be cycled on and off.
Connect the jumper wire again for 4 seconds.
(Test #4) Code 4443, Cold Start Valve will be cycled on and off for 10 seconds, NOTE: You can remove the fuel pump fuse to avoid engine flooding during the cold start valve test.
Connect the jumper wire again for 4 seconds.
(Test #5) Code 4343, Carbon Canister Solenoid valve is cycled on and off.
Connect the jumper wire again for 4 seconds.
(Test #6) Code 4331, Carbon Canister Solenoid "Shut Off" valve is cycled on and off.
Connect the jumper wire again for 4 seconds.
(Test #7) Code 0000, End of Output Test Procedure, fault code memory is erased.
Again, check the Bentley Manual for more details.

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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #10  Добавлено: 14 авг 2008, 16:03 
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LED "Test Light" Construction, for blinking out fault codes.

(1989-91 200TQ/100)

The LED with a series resistor is normally connected across two terminals on the fault code connectors. The LED normally needs a resistor in series to limit the current, most LED's operate with 10-30 milliamps (0.010 to 0.030 amps). A 1/4 watt 680 ohm resistor works pretty well but you don't have to use a resistor with exactly 680 ohms.

The current that is flowing through the LED test light circuit is calculated as follows: Charging system voltage minus voltage drop across LED, divided by the resistance (14 Volts - 1.2 Volts)/680 = 18.8 milliamps (0.0188 amps). The lower the value of resistance, the more current that flows and the brighter the LED, up until the point the smoke gets out. Radio Shack may have a ready to go LED test lamp which already has the resistor in place to limit the current.

Look for Radio Shack Catalog No. 276-084A If not they should have the necessary components to build this LED test light. There are some newer "Super bright" LED's that some electronic supply houses carry that should work great in this application.

A Low Voltage LED Test Light can be made for testing voltages from 2.5V to 5.0V by using a lower value resistor, a 120 ohm resistor will provide ~10 to 30ma through the LED when testing voltages from 2.5V to 5.0V. Here is a diagram that illustrates the connection of the resistor in series with the LED.





I normally use two different colored. wires (black/red) as the LED is polarity sensitive, the flat section on the LED lamp is normally the negative connection. Bolt lug terminals (U shaped) with one leg trimmed off, can be crimped on the wire ends to allow easy insertion into the fault code connector terminals. It won't hurt it if you connect the LED backwards, it just won't make any light.....the resistor can be connected in series on either the + or - wire to the LED.


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #11  Добавлено: 23 окт 2008, 15:18 
Если нажать на панели под тахометром кнопку и зажигание на компьютере выдает маленькие цифры 51, что бы это значило?


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #12  Добавлено: 28 окт 2008, 11:50 
И шо нихто не знает?


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #13  Добавлено: 28 окт 2008, 19:48 
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Я понятия не имею что это :mda:


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #14  Добавлено: 29 окт 2008, 14:20 
SVEN, вот и мне непонятно


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 Заголовок сообщения: Re: ECU Fault Code 1989-91 Audi 200 Turbo 10 valv (в оригинале)
Сообщение #15  Добавлено: 29 окт 2008, 14:28 
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ViLan Если нажать на панели под тахометром кнопку и зажигание - на компьютере выдает...

у меня вообще типа комп тогда отрубался

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