International Anti Lock Light stays on

Discussion in 'International Forum' started by Thepudge, Nov 5, 2013.

  1. Thepudge

    Thepudge Bobtail Member

    2
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    Nov 5, 2013
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    Hi everyone. I have a 99 I.H. 9400 and the anti lock light in the dash constantly stays on:biggrin_25512:. When I first turn the key before starting it the light flashes on and off for about three or four times...that is what it's supposed to do I believe. However the rest of the time she stays on. Any advice on what to look for or where to start???:biggrin_2556:

    Thanks much.
     
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  3. Boomer 1

    Boomer 1 Medium Load Member

    421
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    Oct 26, 2011
    Central, NC
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    Wish I could be more help mine has been on for about a month (12 pro star) figure I'll get looked at during downtime.
     
  4. juanveldez

    juanveldez Light Load Member

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    Apr 24, 2007
    Iron Mountian MI
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    Start with your abs sensor
     
    Thepudge Thanks this.
  5. darkknight82

    darkknight82 Bobtail Member

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    Nov 8, 2013
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    first u need the code from the abs computer then diagnosic from there but 9/10 its a wheel speed sensor
     
  6. dude6710

    dude6710 Road Train Member

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    Mar 26, 2010
    MN
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    Look at all your brakes. I had a pad that went bad and was sticking past a drum about an inch causing the light.
     
  7. darkknight82

    darkknight82 Bobtail Member

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    Nov 8, 2013
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    8.3. DIAGNOSTIC LEDS
    There are nine LEDs, plus a magnetically actuated reset switch in the EC–15 diagnostic window ( Figure
    15 ). The first five LEDs locate a problem to a specific area of the vehicle, while the last four indicate the
    problem component or its wiring. The LEDs are software driven and are either ON or OFF depending upon
    their monitor function.
     
  8. darkknight82

    darkknight82 Bobtail Member

    21
    2
    Nov 8, 2013
    0
    FRONT’ LED
    This Red LED turns ON and stays ON to indicate the location of a problem component or its wiring. This LED
    (when ON) indicates a defect in either the right or left front modulator or sensor circuits. The defect may be
    either the wiring or components. The FRONT LED lights at the same timeas either the RIGHT or LEFT
    LEDand either the MOD or SENS LED.
    ’MID’ LED
    This Red LED is not used in troubleshooting the ECU and should only turn on when a magnet is held
    on the RESET switch.
    ’REAR’ LED
    S04023
    ANTILOCK AIR BRAKE SYSTEM: BENDIX 29
    This Red LED turns ON and stays ON to indicate the location of a problem component or its wiring. This LED
    (when ON) indicates a defect in either the right or left rear modulator or sensor circuits. The defect may be
    either the wiring or components. The REAR LED illuminates at the same timeas either the RIGHT or LEFT
    LEDand either the MOD or SENS LED.
    ’RIGHT’ LED
    This Red LED turns ON and stays ON to indicate the location of a problem component or its wiring. This LED
    (when ON) indicates a defect on the right side (passenger) of the vehicle. The defect is in either the modulator
    or sensor circuits. The defect may be either wiring or the components. The RIGHT LED turns on at the same
    timeas either the FRONT or REAR LEDand either the MOD or SENS LED.
    ’LEFT’ LED
    This Red LED turns ON and stays ON to indicate the location of a problem component or its wiring. This LED
    (when ON) indicates a defect on the left side (driver side) of the vehicle. The defect is in either the modulator
    or sensor circuits. The defect may be either wiring or the components. The LEFT LED illuminates at the same
    timeas either the FRONT or REAR LEDand either the MOD or SENS LED.
    ’MOD’ LED
    This Red LED turns ON and stays ON to indicate a permanent or intermittent open or short circuit in the
    solenoids of one of the four modulators or the wiring connecting a modulator to the system. When this LED
    is on,either the RIGHT OR LEFT LEDand either the FRONT OR REAR LED will also turn on to identify
    the defect location.
    ’SENS’ LED
    This Red LED turns ON and stays ON to indicate permanent or intermittent failure. The failures indicated are:
    open or shorted wheel speed sensor, open or shorted wheel speed sensor wiring, wheel speed signal not
    present or is not proper. When this LED is ON,either the RIGHT OR LEFT LEDand either the FRONT OR
    REAR LED will also be ON to identify the defect location.
    ’ECU’ LED
    This Red LED, when ON, indicates that the controller itself has failed. It stays ON for all ECU failures, except
    low voltage. For voltages less than 9V DC, this LED turns on to indicate the controller is inoperative; however,
    when the voltage again exceeds 9V DC, the LED will TURN ITSELF OFF.
    ’VOLT’ LED
    This Green LED turns ON and stays ON during vehicle operation to indicate that vehicle power is reaching the
    controller. If vehicle power is out of range for proper operation (below 11 vdc or above 17 vdc) this LED will
    flash until power returns to the proper operating range.
    ’RESET’
    Beneath the RESET area of the window display is a magnetically sensitive switch that is used to reset the
    diagnostic system. The device will respond to a magnet (magnet strength must be capable of picking up 3
    ounces). With the vehicle key at IGN, holding a magnet against the RESET will cause all LEDs to turn on as
    long as the magnet is held against it. Resetting can only be done with the key at IGN.
     
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