airbag diagnostic code 51 ford f150


Posted on Feb 4, 2014

An flashing airbag diagnostic code of 51 flashing on a 1994 Ford F150, and I need to understand what this could mean. The probem started about one month ago. I also had a leaky windsheild, so I am also wonder if that could affect the airbag module as well. The code you have indicates that the internal fuse in the airbag control module has been blown; this happens automatically when a short to ground


airbag diagnostic code 51 ford f150
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occurs in one of the airbag circuits in the vehicle. This is a safety feature designed to rprevent injuries due to accidental deployment of the airbag due to an electrical fault; the module blows the fuse intentionally to disable the system. the fuse is not serviceable; a new airbag module must be installed after the short to ground has been located and repaired. The air bag diagnostic monitor contains an internal thermal fuse that is not serviceable. The thermal fuse is controlled by a computer inside the air bag diagnostic monitor. The computer will blow the thermal fuse whenever a short on the deployment circuits occurs. The thermal fuse does not blow because of excessive current flowing through it. Do not attempt to jumper out the thermal fuse with a circuit breaker or any other type of fuse. Do not install a new air bag diagnostic monitor until the short has been located and corrected. If a short to ground has not been located and corrected, then the short to ground is intermittent and is not present at this time. Installing a new air bag diagnostic monitor with an intermittent short in the system will result in blown air bag diagnostic monitors and repeat repairs. The air bag diagnostic monitor measures the voltages at the diagnostic monitor connector pins. When certain air bag deployment wires are shorted to ground (heavy lines illustrated in the schematic below), the system may become susceptible to unwanted...




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