airbag trouble code
#2
airbag trouble code
Hi mbowker64 and welcome to FTE
Here is what the manual says about a LFC (light flashout code) 27. There are 2 different DTCs (diagnostic trouble code) that both pertain to LFC 27. If you took the vehicle in to get the sytem scanned the actual trouble code that would be retrieved would lead you to which of the 2 different pinpoint tests it could be. I dont think I've ever actually seen that code before but in my experience I've seen more RCM (restraint control module) problems than other problems.
Pinpoint Test O: LFC 27/DTC B1884 — Passenger Air Bag Deactivation (PAD) Warning Lamp Inoperative
Normal Operation
The restraints control module (RCM) has the ability to deactivate the passenger air bag under certain conditions. When the passenger air bag is deactivated, the passenger air bag deactivation (PAD) switch warning lamp will be illuminated.
The RCM monitors the PAD switch warning lamp for open or short to ground conditions. If the RCM detects an open or short to ground condition on the PAD switch warning lamp circuit, it will store a diagnostic trouble code (DTC) B1884 in memory and flash a lamp fault code (LFC) 27 (or higher priority code if one exists) on the air bag indicator.
Possible Causes
A PAD warning lamp inoperative fault could be caused by:
an open or short to ground on circuit 1113 (Y/LG).
a damaged or burned out PAD indicator.
a damaged or inoperative PAD switch.
a damaged or inoperative RCM.
a blown PAD switch I/P Fuse 22 (7.5 A).
an RCM internal concern.
------------------------------------------------
Pinpoint Test P: LFC 27/DTC B1890 — Passenger Air Bag Deactivation (PAD) Warning Lamp Short to Battery
Normal Operation
The restraints control module (RCM) has the ability to deactivate the passenger air bag under certain conditions. When the passenger air bag is deactivated, the passenger air bag deactivation (PAD) switch warning lamp will be illuminated.
The RCM monitors the PAD switch warning lamp for short to battery conditions. If the RCM detects a short to battery condition on the PAD switch warning lamp circuit, it will store a diagnostic trouble code (DTC) B1890 in memory and flash a lamp fault code (LFC) 27 (or higher priority code if one exists) on the air bag indicator.
Possible Causes
A PAD warning lamp short to battery fault could be caused by:
a short to battery on circuit 1113 (Y/LG).
a damaged or inoperative PAD switch.
a damaged or inoperative RCM.
Here is what the manual says about a LFC (light flashout code) 27. There are 2 different DTCs (diagnostic trouble code) that both pertain to LFC 27. If you took the vehicle in to get the sytem scanned the actual trouble code that would be retrieved would lead you to which of the 2 different pinpoint tests it could be. I dont think I've ever actually seen that code before but in my experience I've seen more RCM (restraint control module) problems than other problems.
Pinpoint Test O: LFC 27/DTC B1884 — Passenger Air Bag Deactivation (PAD) Warning Lamp Inoperative
Normal Operation
The restraints control module (RCM) has the ability to deactivate the passenger air bag under certain conditions. When the passenger air bag is deactivated, the passenger air bag deactivation (PAD) switch warning lamp will be illuminated.
The RCM monitors the PAD switch warning lamp for open or short to ground conditions. If the RCM detects an open or short to ground condition on the PAD switch warning lamp circuit, it will store a diagnostic trouble code (DTC) B1884 in memory and flash a lamp fault code (LFC) 27 (or higher priority code if one exists) on the air bag indicator.
Possible Causes
A PAD warning lamp inoperative fault could be caused by:
an open or short to ground on circuit 1113 (Y/LG).
a damaged or burned out PAD indicator.
a damaged or inoperative PAD switch.
a damaged or inoperative RCM.
a blown PAD switch I/P Fuse 22 (7.5 A).
an RCM internal concern.
------------------------------------------------
Pinpoint Test P: LFC 27/DTC B1890 — Passenger Air Bag Deactivation (PAD) Warning Lamp Short to Battery
Normal Operation
The restraints control module (RCM) has the ability to deactivate the passenger air bag under certain conditions. When the passenger air bag is deactivated, the passenger air bag deactivation (PAD) switch warning lamp will be illuminated.
The RCM monitors the PAD switch warning lamp for short to battery conditions. If the RCM detects a short to battery condition on the PAD switch warning lamp circuit, it will store a diagnostic trouble code (DTC) B1890 in memory and flash a lamp fault code (LFC) 27 (or higher priority code if one exists) on the air bag indicator.
Possible Causes
A PAD warning lamp short to battery fault could be caused by:
a short to battery on circuit 1113 (Y/LG).
a damaged or inoperative PAD switch.
a damaged or inoperative RCM.
#3
airbag trouble code
Thanks for the info. I tried turning off the pass. side airbag and the "off" light did not come on. I turned it on and off several times but no light. I then turned it off and tapped the area around the switch and the "off" light popped on.
I suppose I need to take it into have the code cleared, huh? The "off" light now comes on each time I turn the airbag off.
I suppose I need to take it into have the code cleared, huh? The "off" light now comes on each time I turn the airbag off.
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#8
airbag trouble code
Light Flashout Code 42 is for the driver's air bag circuit. The most common problem in the clock spring or sliding contact as Ford sometimes calls it, in behind the steering wheel but it could also be the bag itself, the wiring in between the bad and the RCM ( Retsraint Control Module) or the RCM itself.
The manual lists a bunch of pinpoint tests which require some caution and knowhow so you dont accidently set off the airbag while you're testing
I would take a look at the connections under the steering column. If they are all ok you could maybe remove the clock spring and test it with an ohmmeter.
The manual lists a bunch of pinpoint tests which require some caution and knowhow so you dont accidently set off the airbag while you're testing
I would take a look at the connections under the steering column. If they are all ok you could maybe remove the clock spring and test it with an ohmmeter.
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Soupman
2007 - 2014 Expedition & Navigator
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06-08-2017 09:07 AM