Prior to testing separate components or systems, it is highly recommended that all procedures listed in F - BASIC TESTING article be performed. Since many computer controlled and monitored components will change voltage and resistance valves if they malfunction, it is also recommended that connector pin check diagnosis be performed.
NOTE: Testing of individual components does not isolate possible shorts or opens in the control harness of electronically controlled systems. Use an ohmmeter to isolate shorts or opens in harness. All voltage tests should be performed with a Digital Volt Ohmmeter (DVOM) with a minimum 10-megaohm input impedance, unless specifically stated different in testing procedures.
ENGINE SENSORS & SWITCHES Airflow Sensor (Cabriolet & Fox)
1) Start engine to pressurized fuel system. Turn engine off and remove intake boot from top of airflow sensor. Disconnect coil secondary wire from coil and jumper to ground.
2) Check sensor play by slowly moving plate through travel range with a magnet. Resistance should be felt. Move plate back to the rest position. There should be no resistance. If binding is felt, loosen sensor plate hold-down bolt and adjust plate to center of venturi.
3) If resistance is uneven, remove airflow sensor from housing to clean and lubricate lever assembly. If resistance is caused by control plunger, remove and clean control plunger assembly. If binding continues, replace fuel distributor.
4) Check position of airflow sensor plate. Airflow sensor plate edge must be within .075" (1.9 mm) below the narrowest section of the venturi. See Fig. 1. If not, bend sensor spring until correct specification is obtained. Ensure that there is a small gap between the sensor lever and the control plunger.
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Showing posts with label sensor. Show all posts
Showing posts with label sensor. Show all posts
Wednesday, May 5, 2010
Tuesday, May 4, 2010
1999.5 - 2005 Volkswagen Golf/GTI 2.0L 4 Cyl. Cold Air System Installation
Installing the AEM Cold Air System
a) When installing the AEM intake, DO NOT completely tighten the hose clamps, MAF sensor assembly or the mounting tab hardware until instructed to do so later in these instructions.
b) Install the rubber mount in the outermost (towards driver’s side of vehicle) hole to the rear of the large opening behind the headlight. Insert the rubber mount from below (Fig. 16) and secure it with a large fender washer and lock nut from the top. (Fig. 17)
c) Place a large fender washer on the stud that originally secured the lower intake tube in place. (Fig. 18)
d) Re-install the MAF sensor into the plastic intake hose, rotating the electrical connector to the original position. Use the original spring hose clamp. Note: it is possible to install the MAF sensor backwards. DO NOT INSTALL BACKWARDS. Make sure that the end with the flange (originally in the airbox) is still facing away from the throttle body. If you are still unsure, there is an arrow with the word “flow” molded into the MAF sensor body. (Fig. 19)
e) Install the silicone hose onto the upper end of the AEM inlet pipe with one of the 2.75” hose clamps. The upper end is the end with the AEM decal. Loosely install the second 2.75” hose clamp onto the silicone hose.
f) Feed the AEM inlet pipe into the engine bay and fender well. The lower bracket should line up with the rubber mount installed in step 3b. The upper mount should line up with the stud originally used to mount the lower intake tube.
g) Install a large fender washer and lock nut onto both the rubber mount and the stud. (Fig. 20 & 21) Refer to the following diagram for proper rubber mount installation.
h) Insert the MAF sensor into the into the silicone hose on the AEM inlet pipe. Make sure the MAF sensor is still rotated correctly in the factory position. Plug in the MAF sensor wire connector.
i) Install the AEM air filter onto the bottom of the AEM inlet pipe using the supplied hose clamp. Make sure the filter does not contact the horn or the plastic fender liner. (Fig. 22)
j) Adjust the inlet system for best fitment and snug the hose clamps and locknuts down. (Make sure that no part of the inlet system comes into contact with any part of the vehicle.)
k) Connect the factory breather hose to the AEM vacuum hose adapter. Line the clips on the plastic hose up with the flats machined into the adapter. (Fig. 23) It may be helpful to lubricate the o-ring with a small amount of clean engine oil. Use caution to avoid damaging the o-ring.
l) Install the supplied 5/8” vacuum hose section from the AEM adapter to the nipple on the back of the AEM inlet pipe with the two supplied 1” hose clamps. Route the hose in a broad arc under the AEM inlet pipe to avoid kinks. (Fig. 24)
m) Re-assemble the vehicle in the reverse order of disassembly. The large plastic cover behind the headlights that was retained by the three plastic rivets does not need to be reinstalled.
n) At this point the entire intake tube and filter can be re-adjusted for position and alignment. Make sure that no part of the AEM intake rubs anywhere along its length. Critical points to check are on the corner of the plastic battery box and at the bend in the pipe just above the air filter.
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a) When installing the AEM intake, DO NOT completely tighten the hose clamps, MAF sensor assembly or the mounting tab hardware until instructed to do so later in these instructions.
b) Install the rubber mount in the outermost (towards driver’s side of vehicle) hole to the rear of the large opening behind the headlight. Insert the rubber mount from below (Fig. 16) and secure it with a large fender washer and lock nut from the top. (Fig. 17)
c) Place a large fender washer on the stud that originally secured the lower intake tube in place. (Fig. 18)
d) Re-install the MAF sensor into the plastic intake hose, rotating the electrical connector to the original position. Use the original spring hose clamp. Note: it is possible to install the MAF sensor backwards. DO NOT INSTALL BACKWARDS. Make sure that the end with the flange (originally in the airbox) is still facing away from the throttle body. If you are still unsure, there is an arrow with the word “flow” molded into the MAF sensor body. (Fig. 19)
e) Install the silicone hose onto the upper end of the AEM inlet pipe with one of the 2.75” hose clamps. The upper end is the end with the AEM decal. Loosely install the second 2.75” hose clamp onto the silicone hose.
f) Feed the AEM inlet pipe into the engine bay and fender well. The lower bracket should line up with the rubber mount installed in step 3b. The upper mount should line up with the stud originally used to mount the lower intake tube.
g) Install a large fender washer and lock nut onto both the rubber mount and the stud. (Fig. 20 & 21) Refer to the following diagram for proper rubber mount installation.
h) Insert the MAF sensor into the into the silicone hose on the AEM inlet pipe. Make sure the MAF sensor is still rotated correctly in the factory position. Plug in the MAF sensor wire connector.
i) Install the AEM air filter onto the bottom of the AEM inlet pipe using the supplied hose clamp. Make sure the filter does not contact the horn or the plastic fender liner. (Fig. 22)
j) Adjust the inlet system for best fitment and snug the hose clamps and locknuts down. (Make sure that no part of the inlet system comes into contact with any part of the vehicle.)
k) Connect the factory breather hose to the AEM vacuum hose adapter. Line the clips on the plastic hose up with the flats machined into the adapter. (Fig. 23) It may be helpful to lubricate the o-ring with a small amount of clean engine oil. Use caution to avoid damaging the o-ring.
l) Install the supplied 5/8” vacuum hose section from the AEM adapter to the nipple on the back of the AEM inlet pipe with the two supplied 1” hose clamps. Route the hose in a broad arc under the AEM inlet pipe to avoid kinks. (Fig. 24)
m) Re-assemble the vehicle in the reverse order of disassembly. The large plastic cover behind the headlights that was retained by the three plastic rivets does not need to be reinstalled.
n) At this point the entire intake tube and filter can be re-adjusted for position and alignment. Make sure that no part of the AEM intake rubs anywhere along its length. Critical points to check are on the corner of the plastic battery box and at the bend in the pipe just above the air filter.
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Monday, July 14, 2008
DigiMaster 18 Manual Guide
DigiMaster 18 is a programming machine with multifunction which can connect computer through the USB access. Apart from the ordinary functions, there are special models function:
1).Maintenance of the odometer: It is for correcting the mileage of the odometer (identify the data stored in the chip and analyze the data rule of them automatically). Repair the problem of the odometer & Coding the new odometer .
2).Universal Programmer: used when program and modify on the EEPROM with no more than 16 architraves.
3).Decoding Audio: this function module is designed for all kinds of audio with digital code. You can decode the original code when the original code is missed.
4).Restore the airbag: this function module is designed for restoring the data of the airbag after the traffic accident.
5).Computer decoding: used to read the immobilizer of VW/ Audi.
6).Signal generator: used to generate signal in different frequency of all kinds of sensors ( photoelectricity sensor; magnetoelectricity sensor, hall sensor etc. ), simulation test for the odograph and ECU.
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1).Maintenance of the odometer: It is for correcting the mileage of the odometer (identify the data stored in the chip and analyze the data rule of them automatically). Repair the problem of the odometer & Coding the new odometer .
2).Universal Programmer: used when program and modify on the EEPROM with no more than 16 architraves.
3).Decoding Audio: this function module is designed for all kinds of audio with digital code. You can decode the original code when the original code is missed.
4).Restore the airbag: this function module is designed for restoring the data of the airbag after the traffic accident.
5).Computer decoding: used to read the immobilizer of VW/ Audi.
6).Signal generator: used to generate signal in different frequency of all kinds of sensors ( photoelectricity sensor; magnetoelectricity sensor, hall sensor etc. ), simulation test for the odograph and ECU.
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AG (Audi, VW, Seat, Skoda) Airbag Reseter User Manual
After car crashed and airbag had deployed, VW-Audi airbag sensor will stay locked (Control unit faulty or deployed) and must be replaced. Even after small accident, Airbag sensor will write into it's internal memory an error message "crash data stored" or “computer fault” and after it need to replace the expensive sensor to a new one. With our VAG Airbag Reset Tool you can reset and repair the airbag computer in your workshop in 1 minute. No need to remove airbag sensor from the car.
Just connect this tool to VW-Audi OBD II connector (for cars from year 1996-2002). RED button is for airbag "crash data" erase. Push this button once and wait. The yellow light start to flash and after 15 second the green light inform you that "crash data" is erased. Red light set ON if erasing is not successful. YELLOW button is for erase airbag "fault memory" or "errors". If airbag warning lamp go OFF and immediately ON - evaluate airbag "error memory" using any VAG K-line scanner or VAS5051 or similar dealer equipment and repair according error code.
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Just connect this tool to VW-Audi OBD II connector (for cars from year 1996-2002). RED button is for airbag "crash data" erase. Push this button once and wait. The yellow light start to flash and after 15 second the green light inform you that "crash data" is erased. Red light set ON if erasing is not successful. YELLOW button is for erase airbag "fault memory" or "errors". If airbag warning lamp go OFF and immediately ON - evaluate airbag "error memory" using any VAG K-line scanner or VAS5051 or similar dealer equipment and repair according error code.
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