Question about 2003 GMC Sierra 1500

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Find front airbag sensor 2003 Sierra

Air bag light on
looking for front airbag sensor and test procedure

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  • wentz35 Oct 15, 2008

    The crash sensor

  • wentz35 Oct 15, 2008

    I scanned the Truck and it came up P0103 Electric front end sensor fault F1.

    I realize it may be a poor connection, but would like to know the best way to test it with out it setting it off.

  • lively4nc Jan 05, 2009

    The airbag warning light on my 2000 Sierra 1500 now stays on if the passenger airbag is OFF, but not when the passenger airbag is ON. It always went off eventually either way, but I had the front door panels off to replace speakers and in the process removed/replaced the window/lock controls as well. So I'm wondering if it is just a reset and how to do that.

  • Anonymous Apr 11, 2009

    air bag light in my 03 sierra wont go off *** well, i want to reset it but im not a genius so im ganna keep googling until i figure it out

  • yadayada
    yadayada May 11, 2010

    Do you mean the crash sensor? are you looking for the diagnostic monitor also?

  • Anonymous Mar 13, 2014

    Air bag light on on dash

  • Anonymous Mar 17, 2014

    2003 PONTIAC BONNIVELLE AIR BAG SENSOR LOCATION

  • Anonymous Mar 20, 2014

    replaced driver and pass. air bags andair bag module after accident but i can not find theair bag crash sensor in the front of car can you tell me location of it and what it looks like.

  • Anonymous Mar 23, 2014

    air bag code b0139

  • Anonymous Mar 25, 2014

    to delet airbag light?

  • Anonymous Mar 26, 2014

    air bag did not go off on impact

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The front crash sensor is on or near the radiator support under the hood, it is a little square box, one question why do you think it has a problem? it is a mechanical device, a steel ball bearing sitting in an inverted cone, when you crash the ball bearing breaks free of the magnet, that breaks a connection and signals the airbag monitor to fire the airbags, it takes a 5+ MPH impact to set all this in motion, there are side impact sensors as well, the physics of these are a little different, they are measured in G force of the impact, hope all this doesn't bore, one note the fuel that fires the air bag is made by the same folks that make rocket fuel for the solid fuel boosters of the space shuttle.

Posted on Oct 15, 2008

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1 Answer

What do airbag flash codes 22, and 18 mean on a 2003 Toyota corolla?


list of airbag flash codes.

12=Low Battery Voltage
13=Air Bag Circuit Shorted to Ground
14=Primary Crash Sensor Circuit Shorted to Ground
21=Safing Sensor Not Mounted to Vehicle Properly
22=Safing Sensor Output Shorted to Battery Voltage
23=Safing Sensor Circuit Input Feed/Return Circuit Open
24=Safing Sensor Output Feed/Return Circuit Open
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44=RH Primary Crash Sensor Not Mounted to Vehicle Properly
45=LH Primary Crash Sensor Not Mounted to Vehicle Properly
51=Air Bag Diagnostic Monitor Internal Thermal FuseFuse Blown Due to Intermittent Short to Ground
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53=Primary Crash Sensor Circuits Resistance to Ground or Air Bag Diagnostic Fault

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The airbags sensor ligth came on


The air bag control module self-checks the crash sensors every time the engine is started, so unless the air bag warning light is on the sensors are assumed to be okay. If a fault is detected, the air bag warning light will come on and usually deactivate the air bag system. Using a scan tool, you can pull the trouble code from the system and refer to the appropriate diagnostic chart in a service manual to troubleshoot the problem. Air bag service information can also be found on the vehicle manufacturer's website. Loss of circuit continuity anywhere in the air bag system, or loss of power to the air bag module are common causes of trouble codes.

Because crash sensors are sealed units, you cannot always determine their true condition by outward appearances. Any sensor that is obviously sustained physical damage as a result of a collision or other damage should be replaced. But what about ones that look okay? Most electromechanical crash sensors are designed to be electrically open in their rest condition. So one quick check you can perform is to check for continuity with an ohmmeter. If the sensor contacts are closed, it has not reset and should be replaced.

CAUTION! Do not attempt to check or replace any crash sensor unless the air bag module has first been deactivated (or deployed as a result of an accident). This can be done by unplugging the air bag connector at the base of the steering column and waiting at least 10 minutes or longer depending on the application (always refer to a service manual for the proper deactivation and removal procedure).

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1997 Escort Sdn., airbag light flashes 4 times


Pinpoint Test R: Diagnostic Trouble Code 44 — RH Radiator Primary Crash Front Air Bag Sensor Not Mounted to Vehicle Properly Normal Operation
NOTE: Circuit 618 (BL/W) is grounded to the side of the RH radiator primary crash front air bag sensor case, and the case is grounded through the bracket to the vehicle at its mounting point.
The air bag diagnostic monitor (14B056) measures the resistance between pin 20 (circuit 618 [BL/W]) and pin 3 (circuit 57M [BK]), the air bag diagnostic monitor reference ground. If the air bag diagnostic monitor measures a difference of more than 2.0 ohms between pin 20 and pin 3, it will flash diagnostic trouble code (DTC) 44.
Possible Causes
High resistance on pin 20 (circuit 618 [BL/W]) to ground can be caused by:
  • A poor connection due to loose mounting, dirt, or corrosion at the RH radiator primary crash front air bag sensor bracket mounting location.
  • An open or damaged wire in circuit 618 (BL/W) from pin 20 of the air bag diagnostic monitor connector to the RH radiator primary crash front air bag sensor connector.
  • An open circuit inside the RH radiator primary crash front air bag sensor.

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