Question about 2000 Volkswagen Beetle

5 Answers

02 beetle 2.0 AT. need location of trans control relay

Does not shift out of second gear and trans controller will not communicate/ but rest of the systems do. Any help would be great!
P1626 stored in ECU memory. Thanks in advance

Posted by on

  • 5 more comments 
  • brettconrey Jan 12, 2009

    The question I had was where is the trans. controller relay? The controll module is under the center dash panel. I will not dispute the transaxle may need rebuilt, before it is finished. I do know however how to remove the transaxle, but first I need to establish communication on the can bus line. And maybe then I can get it out of limp in mode,also found out the owner had just replaced the battery,so i did go thru the throttle and kickdown reset procedures with my MT-2500 Graphing scanner. Thanks again for any and all help.

  • brettconrey Jan 12, 2009

    I have also checked the shift cable and the cable adjustment. Thanks again

  • brettconrey Jan 14, 2009

    The only relays I have found so far in the engine compartment,are mounted in aprotective housing located to the left ( fender ) side of the master cylinder and 1 of those is the Motronic engine controller relay the other is the secondary air reaction pump relay. There is a fuse and fusible link panel on top of the battery,which all are good. Could the relay center you are talking about be below the battery tray? Thanks again for any and all help.

    Brett

  • brettconrey Jan 14, 2009

    I also must add this is a 2002 model year, again thanks

  • brettconrey Jan 15, 2009

    Still trying to find out the exact location of the transmission relay, Alldata mentions it but does not give a location. Again thanks for any and all help.
    Brett

  • brettconrey Jan 15, 2009

    I have a Snap-On Graphing MT-2500 Scanner loaded with Dom/Asain/Euro 7.2 bundle. I did go thru the pedal and kickdown procedure it listed under functional tests, I can only assume it worked correctly. I found out the gentleman that owns this vehicle not only replaced the battery but also did some minor welding on it. He stated that the fuel pump relay went bad and he had to replace the pump relay after welding. I thought maybe he just set off the anti-theft system, so I replaced the fuel pump relay with his original and the fuel pump did not run, So this is why I am trying to locate the transmissioon relay. Hoping he may have lucked out. Thankyou for the info.

    Brett

  • brettconrey Jan 16, 2009

    abhishek33, i think you may have sent me info you were meaning to send to someone else. I think you sent info on a Toyota product, I am working on a 2002 Volkswagon Beetle. thanks Brett

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5 Answers

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  • Volkswagen Master
  • 19,396 Answers

The trans control module is behind the dash, and its price is over $500.

Posted on Jan 23, 2009

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  • Master
  • 409 Answers

Relay location on the thirteen position auxiliary relay panel, above relay panel: 
1 - Auxiliary Emergency Flasher Relay (404) 2 - Relay for Motor Remote Unlock Rear Lid (79) 3 - Starting Interlock Relay (53) (185) (465) 4 - Fog Light Relay (53) 5 - Control Module for Multi-function Steering Wheel (450) 6 - Control Module for Multi-function Steering Wheel (450) 7 - Daytime Running Lights Change-over Relay (173), from April 1999 8 - Daytime Running Lights Change-over Relay (173), through March 1999 9 - Dual Horn Auxiliary Relay (53) 10 - Glow Plug Relay (180) 10 - Warning Lamp Auxiliary Relay (200) 11 - Park/Neutral Position (PNP) Relay (175) 12 - Power Supply (Terminal 30, B+) Relay (109)Relay Panel: 
1 - Dual Horn Relay (53) 2 - Load Reduction Relay (18) (100) 4 - Fuel Pump (FP) Relay (409) V - Wiper/Washer Intermittent Relay (192) (377) (389) VI - Wiper/Washer Intermittent Relay (192) (377) (389) NOTE Number in parentheses ( ) indicates production control number stamped on relay housing.
02 beetle 2.0 AT. need location of trans control r - 9e16fab.gif


The control module -arrow- is located in the plenum chamber center/right.
09e30d2.gif

Posted on Jan 14, 2009

  • 5 more comments 
  • John Weathers
    John Weathers Jan 14, 2009


    With Generic Scan Tool
    Terminal Resistance For CAN-Bus, Checking 

    Function 
    The Engine Control Module (ECM) communicates with all databus-capable control modules via a CAN databus.

    These databus-capable control modules are connected via two data bus wires which are twisted together (CAN_High and CAN_Low), and exchange information (messages). Missing information on the databus is recognized as a malfunction and stored.

    Trouble-free operation of the CAN-Bus requires that it have a terminal resistance. This central terminal resistor is located in the Engine Control Module (ECM).

    Recommended special tools and equipment 


    • V.A.G1526 multimeter or V.A.G1715 multimeter

    • V.A.G1594 connector test kit

    • Wiring diagram
    Requirements 

    Test sequence 

    Specified value: 60 to 72 Ohms 
    Specified value: 60 to 72 Ohms 

    If resistance value is not in expected range:


    • Replace Motronic Engine Control Module (ECM) -J220-.
    If resistance value is in expected range:


    • Disconnect test box from Engine Control Module (ECM).

    • Connect test box to control module wiring harness.

    • Check CAN data bus wires for short circuit to each other:

    • To do this, perform a resistance measurement between test box sockets 58 + 60: Specified value: Infinite Ohms
    If specified value is obtained (wires have no shorts):


    • Eliminate error in wires (see wiring diagram).



  • John Weathers
    John Weathers Jan 14, 2009

    This is the procedure for checking data  bus message from trnsmission control module.

  • John Weathers
    John Weathers Jan 14, 2009

    You might want to make sure the transmission is indeed full. There is no "dipstick". Here's the proper way to check fluid level in these VW trannys.






    Note:
    The ATF temperature must not be more than approx. 30°C at start of test.


    • Start engine.

    • Raise vehicle.

    • Place drip tray under transmission.

    • Bring ATF to test temperature. Test temperature: 35°C to 45°







    Remove ATF inspection plug from transmission housing (arrow).







    At first the ATF present in the overflow pipe (arrow 2) will run out.



    • Observe amount of ATF draining from plug hole afterward.
    If ATF continues to drip out of hole: 
    ATF need not be topped up.

  • John Weathers
    John Weathers Jan 14, 2009

    You want to top it off until you get a good flow of fluid from pipe. Do you have a scanner that can reset adaptation? That's all you might have to do to reestablish com with data bus.

  • John Weathers
    John Weathers Jan 14, 2009

    Hope all this helps and good luck. Half my hair fell out naturally and the other half was pulled out due to VW trans problems(LOL) BUT I always get them to work.

  • John Weathers
    John Weathers Jan 14, 2009

    Here's the trans control system diagram.











  • John Weathers
    John Weathers Jan 15, 2009

    You're welcome. There's pictures in this thread of a Toyota. I know we are working on an 02 Beetle with a 2.0L. The secon picture in my earlier post shows you the location of the trans control module.
    If you wouldn't mind please take the time to rate my post.

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  • Master
  • 1,239 Answers

HI
SEE THE GEAR CONTROL...ANY OBSTACLES Underneath the center console, in between the two front seats

Posted on Jan 11, 2009

  • 3 more comments 
  • ABHISHEK.C
    ABHISHEK.C Jan 13, 2009

    i think this helps youa most
    A.
    A self-diagnosis function is built into the electrical control system. Warning is indicated by the overdrive OFF indicator light.
    Note: Warning and diagnostic codes can be read only when the overdrive switch is ON. If OFF, the overdrive OFF light is lit continuously and will not blink.


    1. If a malfunction occurs within the speed sensors (No.1 or 2) or solenoids (No.1, 2 or 4), the overdrive OFF light will blink to warn the driver. However, there will be no warning of a malfunction with lock-up solenoid.

    2. The diagnostic code can be read by the number of blinks of the overdrive OFF indicator light when terminals TE1 and E1 are connected.

    3. The throttle position sensor or brake signal are not indicated, but inspection can be made by checking the voltage at terminal TT of the check connector.

    4. The signals to each gear can be checked by measuring the voltage at terminal TT of the check connector while driving.
    The diagnostic code (trouble code) is retained in memory by the CPU (of TCCS ECU) and due to back-up voltage, is not canceled out when the engine is turned off. Consequently, after repair, it is necessary to turn the ignition switch off and remove the fuse EFI (15A) or disconnect the TCCS ECU connector to cancel out the diagnostic (trouble) code.
    Note: Low battery voltage will cause faulty operation of the diagnosis system. Therefore. always check the battery first. Use a voltmeter and ohmmeter that have an impedance of at least 10K Ohm/Volt.
    Check "O/D Off" Indicator Light:


    1. Turn the ignition switch ON.

    2. The "O/D Off" light will come on when the O/D switch is placed at OFF.

    3. When the O/D switch is set to ON, the "O/D Off" light should go out. If the "O/D Off" light flashes when the O/D switch is set to ON, the electronic control system is faulty.
    Read Diagnostic Code:


    1. Turn ignition switch and o/d switch to ON. Do not start the engine. Engine NOTE: Warning and diagnostic codes can be read only when the overdrive switch is ON. If OFF, the overdrive OFF light will light continuously and will not blink.

    2. Connect TE1, and E1, terminals of check connector.

    3. Read the diagnostic code as indicated by the number of times the O/D OFFlight flashes.
    Diagnostic Code Indication:
    • If the system is operating normally, the light will flash two times per second.
    • In the event of a malfunction, the light will flash 1 time per second. The number of blinks will equal the first number and, after 1.5 seconds pause, the second number of the two digit diagnostic code. If there are two or more codes, there will be a 2.5 seconds pause between each.
    NOTE: In the event of several trouble codes occurring simultaneously, indication will begin from the smaller value and continue to the larger.


  • ABHISHEK.C
    ABHISHEK.C Jan 14, 2009

    yes there is possibility of the centre relay also...check that and reply me

  • ABHISHEK.C
    ABHISHEK.C Jan 15, 2009

    see this

  • ABHISHEK.C
    ABHISHEK.C Jan 15, 2009

    Remove the dead pedal and the left front sill plate.
    In the left kick panel you will find a
    Silver metal box. That is the ABS ECU. Remove it, and behind you will find a
    black plastic relay about the size of a
    cigarette pack. It says "transmission control relay" on it.
    That's what you are after. The EWD calls it the "center diff lock
    relay", same thing. Unplug the harness from it and take a
    terminal pick and remove the black wire with blue tracer from pin#7.

  • ABHISHEK.C
    ABHISHEK.C Jan 15, 2009

    Remove the dead pedal and the left front sill plate.
    In the left kick panel you will find a
    Silver metal box. That is the ABS ECU. Remove it, and behind you will find a
    black plastic relay about the size of a
    cigarette pack. It says "transmission control relay" on it.
    That's what you are after. The EWD calls it the "center diff lock
    relay", same thing. Unplug the harness from it and take a
    terminal pick and remove the black wire with blue tracer from pin#7.Insulate the bare terminal to suit and
    then put everything else back where you found it.


    If you have the low 4 position switch
    at the transfer case unplugged, crawl under there and reconnect that as
    well.


    What you have just accomplished is you
    have interrupted the signal from the transfer case that tells the lock
    ECU that you went to low range but you are still sending a signal to the
    transmission ECU telling it that you ARE in low range. Therefore the
    transmission will shift in the correct low range pattern. In addition
    you now have true manual control over center diff locking. It only locks
    when you tell it to without regard to transfer range selection.


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  • Expert
  • 326 Answers

Drop the engine cradle and pull it out the bottom . thanks.

Posted on Jan 11, 2009

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  • Master
  • 5,158 Answers

The relay is likely located on the fuse panel inside the engine compartment near the battery. hopefully it is labelled as i don't have the notes on which relay is which.

Robert

Posted on Jan 13, 2009

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