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Thread: Mk4 1.4 s Throttle Issue - Limp Mode

  1. #11
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    Thanks and will keep that site for the future. Found on Ebay for 36.00 in the end.
    2005 Golf Mk 5 1.9 TDI-PD
    2004 Golf 1.4 S, Petrol BCA

  2. #12
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    TB wiring as follows:

    Pin number @TB Wire colour Function Pin number @engine ECU

    3 white/red Motor drive 80
    5 grey/yellow Motor return 66
    2 black/green +5V to pots 55
    6 brown/yellow 0V to pots 61
    1 grey/green pot1 wiper 68
    4 grey pot2 wiper 75

    Pots = potentiometers, two in opposite sense that give feedback on position of butterfly.

    The motor drive will be a pulse width modulated (PWM) 12V, so if measured with anything other than scope it may look like a variable dc voltage between 0 and 12V.
    Main thing to check is continuity of wires from loom connector to loom connector, really.


    What is the actual error code you're seeing?

    I get an antivirus warning about oemepc, so I use 7zap.com instead.
    Gone

  3. #13
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    Many thanks for the reply and apologies but I have only just seen this! Welcome to email filters! As it happens, the error is odder that that. I had a mechanic out the other day as I had given up after changing all the components in the chain except the wiring loom. Faults:
    Current Fault Log
    ------------------
    P0122: Throttle/Pedal Position Sensor/Switch A Circuit Low Input
    P0222: Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input
    P0304: Cylinder 4 Misfire Detected
    Pending Fault Log
    ------------------
    P0638: Throttle Actuator Control Range/Performance (Bank 1)
    P2101: Throttle Actuator Control Motor Circuit Range/Performance

    However, when we were working on this there was a pop as if a diaphragm down the back had released and we got full function back again. However..... attempted to accelerate away and instantly cut to limp mode again max 2000 rpm. At my wits end so poss. to garage or off to knackers yard if I lose the will to live.

    Thanks for now!
    2005 Golf Mk 5 1.9 TDI-PD
    2004 Golf 1.4 S, Petrol BCA

  4. #14
    Administrator Keithuk's Avatar
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    Manufacturer: VW, Date(s) Used: 10/2003-07/2005, Model: Golf/Variant/4Motion, Engine Code: BCA, 55Kw, 75PS, 1.4 Ltr, 4 Cyls, Remarks: 16v Bosch Motronic ME 7.5.10, MPI
    Manufacturer: VW, Date(s) Used: 05/2002-06/2006, Model: Golf/Variant/4Motion/R32, Engine Code: BCA, 55Kw, 75PS, 1.4 Ltr, 4 Cyls, Remarks: 16v Bosch Motronic ME 7.5.10, MPI


    VAG Error Code: 16506/15338/2670/000290
    EOBD II Error Code: P0122

    Fault Location:
    Throttle Position Sensor (G69) - Signal too Low/Short Circuit to Earth

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.

    Fuse(s).
    Signal wire short to earth.
    Supply wire defective.
    Throttle position sensor (G69).

    Possible Solutions:
    Check/Replace all faulty Wiring/Connector(s).
    Read Measuring Value Blocks (MVB).
    Signal voltage < 0.20 V.

    When is the code detected?:
    An excessively low voltage from the Throttle Position (TPP) Sensor is sent to Engine Control Module (ECM).

    Description:
    The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the Engine Control Module (ECM).

    Idle position of the throttle valve is determined by the Engine Control Module (ECM) receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.


    VAG Error Code: 16606/15340/000546
    EOBD II Error Code: P0222

    Fault Location:
    Angle Sensor 2 for Throttle [G188] - Signal too Low/Short Circuit to Earth

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.
    No throttle response.

    Fuse(s).
    Wiring/Connector(s) short to earth.
    Angle Sensor 2 for Throttle [G188] faulty.

    Possible Solutions:
    Check/Replace Fuse(s).
    Check/Replace all faulty Wiring/Connector(s) to/from Angle Sensor 2 for Throttle [G188].
    Read Measuring Value Blocks (MVB).
    Signal voltage < 0.20 V.
    Check/Replace Angle Sensor 2 for Throttle [G188].

    When is the code detected?:
    An excessively low voltage from the Throttle Position Sensor is sent to Engine Control Module (ECM).

    Description:
    Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

    The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM) In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the Engine Control Module (ECM). The Engine Control Module (ECM) judges the current opening angle of the throttle valve from these signals and the Engine Control Module (ECM) controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.


    VAG Error Code: 16688/10594/4063/000772
    EOBD II Error Code: P0304

    Fault Location:
    Cylinder 4 - Misfire Detected

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.
    Lack/loss of power.
    Hard start.
    Engine hesitation.

    Wiring/Connector(s).
    Ignition system.
    Fuel injectors.
    Fuel pressure.
    Running out of fuel.
    EVAP canister purge valve.
    Evaporative emission system.
    Low compression.
    Base engine problems.
    Engine Control Module (ECM) damaged.

    Possible Solutions:
    Check/Replace all faulty Wiring/Connector(s).
    Do a compression test.
    Read Measuring Value Blocks (MVB) 15 if misfire changes location.

    Special Notes:
    This feature search for engine misfire in a specific cylinder. Most of the time the cause for a misfire is a lack of combustion in a cylinder due to absence of spark, poor fuel metering, or poor compression.

    Tech Notes:
    The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4. If the problem persist more tests needs to be done to diagnose problem.

    Description:
    When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Engine Speed (RPM) Sensor [G28]/Crankshaft Position Sensor [G28] signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.


    VAG Error Code: 17022/001592/5308
    EOBD II Error Code: P0638

    Fault Location:
    Throttle Body Actuator [J338], Bank 1 - Range/Performance Problem/Implausible Signal

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.

    Basic setting not carried out (if applicable).
    Idle speed control (ISC) actuator/throttle motor.
    Accelerator pedal position sensor.
    Drive-by-wire control system malfunction.
    Throttle valve malfunction.
    Throttle Body Actuator [J338].
    Powertrain Control Module (PCM) malfunction.

    Possible Solutions:

    Read Measuring Value Blocks (MVB).

    Tech Notes:
    Dirty or clogged throttle body can triggered the P0638 code. Before replacing any parts try cleaning the throttle body and reset the engine light.

    Description:
    The Powertrain Control Module (PCM) compares the actual Throttle Position (TP) with the target TP when the engine is running. If the difference is more than the specification, the Powertrain Control Module (PCM) determines that there is a throttle actuator control circuit range/performance problem.


    VAG Error Code: 18533/008449
    EOBD II Error Code: P2101

    Fault Location:
    Throttle Actuator Control System - Range/Performance Problem/Malfunction

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.

    Wiring/Connector(s).
    Throttle actuator control motor.

    Possible Solutions:
    Check/Replace all faulty Wiring/Connector(s).
    Read Measuring Value Blocks (MVB).

    As taken from my new EOBD II Fault Codes Software
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


  5. #15
    Administrator Crasher's Avatar
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    The VW number for a 2004 Golf 4 BCA engine throttle body is 036 133 062 L and as far as I can tell, always has been. An 03C 133 062 C changed to 03C 133 062 S 0n 01/10/10 and then to a 03C 133 062 T on 01/09/13 and this is used on the Golf 4 with the BUD engine. 03C 133 062 is a good number but was used on the 2004 onwards Golf 5 with a BCA engine, not a Golf 4.
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  6. #16
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    Maybe the OP's car is a mk5? Got a photo IBOYLE?
    Or look at 8th digit of VIN and see if it's a J or a K. (Mk4 and Mk5 respectively)
    Gone

  7. #17
    Administrator Crasher's Avatar
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    From looking at his other posts I think that is the case.
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  8. #18
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    Might make my wiring info in post #12 suspect, I'll re-check after lunch.

    Nope, all the same as what I posted above.
    Last edited by Pete1; 12-03-19 at 12:50.
    Gone

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