Airbag Code
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Joined: May 2002
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From: Kentucky
Airbag Code
Ok, I have a 98 F-150 4x4. The airbag light is on. When the truck is started, it flashes 4 times, then goes off, then flashes 1 time and then repeats this process a few times then just stays on. I assume this code is a 41 or a 4-1. Can someone tell me what this means?
Matt
Matt
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Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Airbag Code
It would appear that you have a Right front airbag sensor problem or a problem with the wiring to it. The sensor is on the rad support, under the cover that goes from the grille to the fan shroud.
Here is what the manual says about the code 41.....
Normal Operation
The voltage at Pin C209-16, Circuit 617 (PK/O), is set by the air bag diagnostic monitor to be slightly less than battery voltage. Circuit 617 (PK/O) is connected to Circuit 624 (Y/W) inside the RH air bag sensor. Therefore, the voltage at Pin C208-24, Circuit 624 (Y/W) should be the same as the voltage at Pin C209-16, Circuit 617 (PK/O).
The air bag diagnostic monitor periodically pulls the voltage at Pin C209-16, Circuit 617 (PK/O), low to verify the connection to Pin C208-24, Circuit 624 (Y/W). If the voltage at Pin C208-24, Circuit 624 (Y/W), does not pull low as a result of this test, the air bag diagnostic monitor will store in memory the diagnostic trouble code (DTC) B1941 and flash a lamp fault code (LFC) 41 on the air bag indicator. If the connection between Pin C209-16, Circuit 617 (PK/O), and Pin C208-24, Circuit 624 (Y/W), is later repaired, the DTC B1941 will be stored in memory.
Possible Causes
Failure to get low voltage at Pin C208-24, Circuit 624 (Y/W), during the test can be caused by:
an open circuit in the wiring harness in either Circuit 617 (PK/O) or Circuit 624 (Y/W).
an open circuit inside the RH air bag sensor across Circuit 617 (PK/O) or Circuit 624 (Y/W).
a short to battery or ignition voltage in any of the Circuits 617 (PK/O), 619 (PK/W), 624 (Y/W), or 625
Here is what the manual says about the code 41.....
Normal Operation
The voltage at Pin C209-16, Circuit 617 (PK/O), is set by the air bag diagnostic monitor to be slightly less than battery voltage. Circuit 617 (PK/O) is connected to Circuit 624 (Y/W) inside the RH air bag sensor. Therefore, the voltage at Pin C208-24, Circuit 624 (Y/W) should be the same as the voltage at Pin C209-16, Circuit 617 (PK/O).
The air bag diagnostic monitor periodically pulls the voltage at Pin C209-16, Circuit 617 (PK/O), low to verify the connection to Pin C208-24, Circuit 624 (Y/W). If the voltage at Pin C208-24, Circuit 624 (Y/W), does not pull low as a result of this test, the air bag diagnostic monitor will store in memory the diagnostic trouble code (DTC) B1941 and flash a lamp fault code (LFC) 41 on the air bag indicator. If the connection between Pin C209-16, Circuit 617 (PK/O), and Pin C208-24, Circuit 624 (Y/W), is later repaired, the DTC B1941 will be stored in memory.
Possible Causes
Failure to get low voltage at Pin C208-24, Circuit 624 (Y/W), during the test can be caused by:
an open circuit in the wiring harness in either Circuit 617 (PK/O) or Circuit 624 (Y/W).
an open circuit inside the RH air bag sensor across Circuit 617 (PK/O) or Circuit 624 (Y/W).
a short to battery or ignition voltage in any of the Circuits 617 (PK/O), 619 (PK/W), 624 (Y/W), or 625
