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Dtc b1022 air bag light on

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How do i fix my 1997 mercury grand marquis my air bag light flashs code 41


B1941 41 RH primary crash sensor feed/return circuit open GO to DTC B1941.
DTC B1941: RH PRIMARY CRASH SENSOR FEED/RETURN CIRCUIT OPEN- LAMP FAULT CODE 41

Normal Operation
The voltage at Pin C276-16, 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 RH primary crash sensor. Therefore, the voltage at Circuit 624 (Y/W) and air bag diagnostic monitor Pin C277-24 should be the same as the voltage at air bag diagnostic monitor Pin C276-16, Circuit 617 (PK/O).
The air bag diagnostic monitor periodically pulls the voltage at Pin C276-16, Circuit 617 (PK/O) low to verify the connection to Pin C277-24, Circuit 624 (Y/W). If the voltage at Pin C277-24, Circuit 624 (Y/W) does not pull low as a result of this test, the air bag diagnostic monitor will store in memory DTC B1941 and flash lamp fault code 41 on the AIR BAG indicator. If the connection between Pins C276-16, Circuit 617 (PK/O) and C277-24, Circuit 624 (Y/W) is later serviced, DTC B1941 will be stored in memory.
Possible Causes
Failure to get low voltage at Pin C277-24, 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 RH primary crash 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), 625 (Y/LG).

May 22, 2017 | Mercury Cars & Trucks

1 Answer

2008 ford f-350 passenger air bag flashes 1-7 code than stays on when truck is started.What does the code mean and can the code be reset without tearing air bag out of truck?


If a SRS fault exists, the RCM sends a message to instrument cluster module to flash a coded sequence which is called a lamp flash code (LFC) on the air bag warning indicator. Each LFC is flashed 3 times after which the air bag indictor will remain lit for the remainder of the key-on cycle. In addition to the self-test at start up, the RCM continuously monitors all of its external and internal circuitry for faults.
While the LFCs are an indication of a general concern in the supplemental restraint system (SRS), the DTCs are more specific. The DTCs can be retrieved from the RCM with a scan tool via the DLC.


DTC a c LFC b Description Action To Take - Continuous Lamp The Air Bag Warning Indicator is Illuminated Continuously (RCM Disconnected or Inoperative, Loss of Battery Feed or Loss of Signal Ground) Go To Pinpoint Test A . B1048 c - Passenger Side Air Bag Cross Link to Another Firing Loop Go To Pinpoint Test B . B1049 c - Passenger Seatbelt Pretensioner Cross Link to Another Firing Loop Go To Pinpoint Test C . B1054 c - Driver Seatbelt Pretensioner Cross Link to Another Firing Loop Go To Pinpoint Test D . B1057 c - Driver Air Bag Cross Link to Another Firing Loop Go To Pinpoint Test E . B1231 13 RCM Crash Data Memory Full INSTALL a new RCM and CARRY OUT programmable module installation (PMI). REFER to Restraints Control Module (RCM) and Inspection and Repair After a Supplemental Restraint System (SRS) Deployment in this section. B1317 Continuous Lamp Battery Voltage High REFER to Section 414-00 . B1318 Continuous Lamp Battery Voltage Low REFER to Section 414-00 . B1342 24 RCM is Faulted INSTALL a new RCM and CARRY OUT programmable module installation (PMI). REFER to Restraints Control Module (RCM) in this section. B1871 25 Passenger Air Bag Deactivate Module Fault Go To Pinpoint Test F . B1884 27 Passenger Air Bag Deactivation (PAD) Warning Lamp Circuit Failure Go To Pinpoint Test G . B1890 27 Passenger Air Bag Deactivation (PAD) Warning Lamp Short to Battery Go To Pinpoint Test H . B2292 33 Restraint System - Seat Belt Pretensioner Fault (Driver Pretensioner Circuit Fault) Go To Pinpoint Test I . B2292 34 Restraint System - Seat Belt Pretensioner Fault (Passenger Pretensioner Circuit Fault) Go To Pinpoint Test I . B2293 19 Restraint System - Air Bag Fault (Driver Front Air Bag Circuit Fault) Go To Pinpoint Test J . B2293 21 Restraint System - Air Bag Fault (Passenger Front Air Bag Circuit Fault) Go To Pinpoint Test J . B2296 42 Restraint System - Impact Sensor Fault Go To Pinpoint Test K . B2434 53 Driver Seat Belt Buckle Switch Circuit Short to Ground Go To Pinpoint Test L . B2435 53 Driver Seat Belt Buckle Switch Resistance out of Range Go To Pinpoint Test M . B2477 54 Module Configuration Failure This DTC indicates programmable module installation (PMI) has not been done to a newly installed module. CARRY OUT PMI. REFER to Section 418-01 . CLEAR the DTC. CARRY OUT the self-test. B2607 57 Harness/Configuration Mismatch This DTC indicates the RCM is configured incorrectly. CARRY OUT programmable module installation (PMI). REFER to Section 418-01 . CLEAR the DTC. CARRY OUT the self-test. If DTC is retrieved a second time, INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) in this section. B2691 53 Seat Belt Buckle Switch Circuit Fault, Front Driver's Side Go To Pinpoint Test N . C1414 29 Incorrect Module Design Level VERIFY RCM part number is correct for vehicle.
CARRY OUT programmable module installation (PMI). REFER to Section 418-01 . CLEAR the DTC. CARRY OUT the self-test. If DTC is retrieved a second time, INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) in this section. U0100 14 Lost Communication With ECM/PCM REFER to Section 418-00 to diagnose the communication concern. U2023 14 Fault Received From External Node REFER to Section 418-00 to diagnose the communication concern. U2050 14 No Application Present This DTC indicates programmable module installation (PMI) has failed. CARRY OUT PMI. REFER to Section 418-01 . CLEAR the DTC. CARRY OUT the self-test. If DTC is retrieved a second time, INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) in this section. a DTC: Diagnostic trouble code, retrieved using scan tool.
c Cross-link DTCs will be retrieved in pairs to identify the cross-linked components.
b LFC: Lamp fault code, flashed on air bag warning indicator.

Apr 18, 2017 | Ford Cars & Trucks

1 Answer

2006 lincoln town car air bag light is on 5 beeps 5 times


The five beeps - five times would indicate a code 55 , but factory service info only goes to code 53 .

  • Audible tone - DTCs retrieved
  • Air bag SRS system fault
  • REFER to DTC Priority Table.

Did your air bag light flash at all ? Apparently this will do flash the air bag light codes as well .
Symptom Chart Condition Possible Sources Action
  • Air bag warning indicator is illuminated continuously
  • Fuse
  • Damaged wiring, terminals or connectors
  • A faulty diagnostic connector
  • A faulted RCM
  • A faulty instrument cluster
  • Go To Pinpoint Test A .
  • Air bag indicator flashing
  • Air bag/pretensioner supplemental restraint system (SRS) fault
  • REFER to DTC Priority Table.
  • Audible tone - DTCs retrieved
  • Air bag SRS system fault
  • REFER to DTC Priority Table.
  • No communication with the restraints control module (RCM)
  • Fuse
  • Diagnostic tool
  • Data link connector (DLC)
  • A faulted RCM
  • Circuitry
  • Go To Pinpoint Test V .
LFC - light flash codes .
Restraints Control Module (RCM) Diagnostic Trouble Code (DTC) Table
DTC a LFC b Description Action To Take - Continuous The Air Bag Indicator is Illuminated Continuously, RCM Disconnected or Inoperative, Loss of Battery Feed, or Loss of Signal Ground Go To Pinpoint Test A . B1231 13 Crash Data Memory Full Install a new RCM and impact sensors. REFER to Inspection and Repair After a Supplemental Restraint System (SRS) Deployment . B1317 Continuous Battery Voltage High CHECK battery voltage; to be below 16 volts. REFER to Section 414-01 . B1318 Continuous Battery Voltage Low CHECK battery voltage; to be above 9.0 volts. REFER to Section 414-01 . B1342 12 RCM Is Faulted Install a new RCM. B1869 NONE
Continuous lamp
Secondary air bag warning sounds if another fault is present Lamp Air Bag Warning Indicator Circuit Open or Short to Ground Go To Pinpoint Test B . B1870 NONE
Secondary air bag warning sounds if another fault is present Air Bag Warning Indicator Circuit Short to Battery Go To Pinpoint Test C . B1891 53 Air Bag Tone Warning Indicator Circuit Short to Battery Go To Pinpoint Test D . B1892 53 Air Bag Tone Warning Indicator Circuit Open or Short to Ground Go To Pinpoint Test E . B1921 14 Air Bag Diagnostic Monitor Ground Circuit Open Go To Pinpoint Test F . B2292 33 Restraint System - Safety Belt Pretensioner Fault (Driver Pretensioner Circuit Fault) Go To Pinpoint Test G . B2292 34 Restraint System - Safety Belt Pretensioner Fault (Passenger Pretensioner Circuit Fault) Go To Pinpoint Test G . B2293 19 Restraint System - Air Bag Fault (Driver Front Air Bag Circuit Fault) Go To Pinpoint Test H . B2293 21 Restraint System - Air Bag Fault (Passenger Front Air Bag Circuit Fault) Go To Pinpoint Test H . B2294 24 Restraint System - Curtain Fault (Driver Side Air Curtain Circuit Fault) Go To Pinpoint Test I . B2294 25 Restraint System - Curtain Fault (Passenger Side Air Curtain Circuit Fault) Go To Pinpoint Test I . B2295 22 Restraint System - Side Air Bag Fault (Driver Seat Side Air Bag Circuit Fault) Go To Pinpoint Test J . B2295 23 Restraint System - Side Air Bag Fault (Passenger Seat Side Air Bag Circuit Fault) Go To Pinpoint Test J . B2296 42 Restraint System - Impact Sensor Fault (Front Impact Severity Sensor Circuit Fault) Go To Pinpoint Test K . B2296 43 Restraint System - Impact Sensor Fault (Driver Side Front Row Impact Sensor Circuit Fault) Go To Pinpoint Test K . B2296 45 Restraint System - Impact Sensor Fault (Driver Side Second Row Impact Sensor Circuit Fault) Go To Pinpoint Test K . B2296 44 Restraint System - Impact Sensor Fault (Passenger Side Front Row Impact Sensor Circuit Fault) Go To Pinpoint Test K . B2296 46 Restraint System - Impact Sensor Fault (Passenger Side Second Row Impact Sensor Circuit Fault) Go To Pinpoint Test K . B2434 51 Driver Safety Belt Buckle Switch Circuit Short To Ground Go To Pinpoint Test L . B2435 51 Driver Safety Belt Buckle Switch Circuit Resistance Out Of Range Go To Pinpoint Test M . B2438 52 Passenger Safety Belt Buckle Switch Circuit Short To Ground Go To Pinpoint Test N . B2439 52 Passenger Safety Belt Buckle Switch Circuit Resistance Out Of Range Go To Pinpoint Test O . B2477 Continuous Module Configuration Error INSTALL a new RCM. B2691 51 Driver Safety Belt Buckle Switch Circuit Fault Go To Pinpoint Test P . B2692 52 Passenger Safety Belt Buckle Switch Circuit Fault Go To Pinpoint Test Q . C1414 15 Incorrect Module Design Level Go To Pinpoint Test R . C1947 49 Driver Seat Track Position Sensor Circuit Short to Ground Go To Pinpoint Test S . C1948 49 Driver Seat Track Position Sensor Circuit Resistance Out Of Range Go To Pinpoint Test T . C1981 49 Driver Seat Track Position Sensor Circuit Fault Go To Pinpoint Test U . - - No Communication with the Restraints Control Module Go To Pinpoint Test V . Your best bet have codes checked with a scan tool .

Jan 23, 2017 | Lincoln Cars & Trucks

1 Answer

1995 isuzu trooper check trans. Light and air bag flashing


that means get it serviced,
if DIY?
you must scan the 2 things, in question
the air bag scan tool, scanner.
and the PCM will report, Automatic codes. DTC errors

alldata.com covers this.
read it?

ill stated the obvious too.,. now;
pull battery neg lug. for 5min put back.
see if both DTC errors return.
if the bags light is on, it must be scanned to find what what the codes are...

Tranny:
A/T 101: ; check levels yet, fluid not pink/red but is black, filter in trans filtly packed up>?
scan the TCM? if car has TCM it has flash codes in 1995. the FSM book show you how to get those codes.
finding pre 95 scan tool is impossible for pre 96 cars. mostly."usa car usa forum"

seen here
http://www.troublecodes.net/isuzu/


what transmission is in this car ,if not a clue.
in 1995 many cars had 2 options, one hydramatic pure. and one TCM shifted electronic trans.
but it seems yours is TCM type, with many solenoids.

Jun 22, 2015 | Isuzu Cars & Trucks

1 Answer

Air bag light on all the time.


It means there is a problem with the air bags , an there is a DTC -diagnostic trouble code stored in the SRS - air bag control module ! With the light being on , the air bag system is deactivated ! Need to take it to a repair shop an have it diagnosed ! Air Bag Light Flashing How to diagnose and fix

Feb 11, 2015 | Cars & Trucks

1 Answer

I HAVE A 2011 NISSAN SENTRA WITH THE B1210 CODE(EIC SWITCH-2 ASSEMBLY CIRCUIT OPEN)


DTC - B1210 COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a collision which has resulted in a frontal or side deployment of one or more air bags or pre-tensioners. If this DTC is detected after a SRS repair, the air bag diagnosis sensor unit has not yet been replaced. This DTC can not be erased. Please see the dealer on this.

Oct 23, 2012 | Cars & Trucks

1 Answer

MY AIR BAG LIGHT IS STAYING ON AND SOMETIMES IT FLASHES?


You need to find out what the fault code is. It will direct you to the area responsible.

Air Bag Diagnostic Monitor
ani_caut.gif WARNING: UNDER NO CIRCUMSTANCES SUBSTITUTE ANOTHER FUSE VALUE FOR THE 10A BATTERY FUSE. ANY FUSE OTHER THAN 10A MAY CAUSE DISARMING FAILURE AND MAY RESULT IN DANGER TO THE OCCUPANTS OF THE VEHICLE. DO NOT ATTEMPT TO REPLACE THE 10A BATTERY FUSE UNTIL THE AIR BAG SYSTEM FIRST HAS BEEN DEACTIVATED (SEE DEACTIVATION PROCEDURE FOR DETAILS).
NOTE: The safing sensor is internal to the air bag diagnostic monitor (14B056) and is not replaced separately.
The air bag diagnostic monitor continually monitors all supplemental air bag restraint system (SRS) components and wiring connections for possible faults in the system. If the air bag diagnostic monitor detects a fault in the SRS when the ignition switch (11572) is in the RUN position, a diagnostic trouble code (DTC) will be displayed by the air bag indicator, located on the instrument cluster (10849).
The air bag diagnostic monitor does not deploy the air bag in the event of a collision. The LH or RH air bag sensor and the safing sensor determine when to deploy the air bag.
The air bag diagnostic monitor illuminates the air bag indicator for approximately six seconds when the ignition switch is in the RUN position and then turns the indicator off. This shows that the air bag indicator is operational. If the air bag indicator does not illuminate or the indicator stays on or flashes at any time, a fault has been detected by the air bag diagnostic monitor.
DTCs may not be displayed for approximately 30 seconds after the ignition switch is placed in the RUN position. This is the amount of time the air bag diagnostic monitor requires to perform all tests and verify system faults.
Each DTC (a series of flashes and pauses of the air bag indicator):
  • Represents a two-digit number.
  • Is always displayed at least twice.
If the diagnostic monitor detects a fault in the air bag system, a DTC will be written to the diagnostic monitors non-volatile RAM (NVRAM). This DTC will then cause the lamp to flash a lamp fault code (LFC) on the air bag indicator and can be retrieved with the New Generation STAR (NGS) Tester. After repair, the DTC may then be cleared from the NVRAM.
If a system fault is present and the air bag indicator is malfunctioning, an audible tone will be heard. The tone is a series of five sets of five beeps. If the tone is heard, the air bag system requires repair.
If a fault exists that makes unwanted air bag deployment possible, the air bag diagnostic monitor will attempt to remove deployment power by turning on a solid state switch to blow the 10A battery fuse 2.
If the 10A battery fuse has successfully been blown by the air bag diagnostic monitor, the air bag diagnostic monitor will not attempt to blow it again until the proper fault has been repaired and cleared (see Diagnostic Trouble Code Clearing procedures for details). The air bag diagnostic monitor will store both the unwanted deployment DTC and the loss of deployment power DTC. The loss of deployment power DTC is the highest priority.
DTCs are prioritized numerically. If two or more faults occur at the same time, the fault having the highest priority will be displayed first. After that fault has been corrected, the next highest priority fault will be displayed.
The air bag diagnostic monitor includes an internal backup power supply. This feature provides sufficient backup power to deploy the air bag in the event the battery (10655) or battery cables are damaged in a collision before safing and air bag sensors close. The backup power supply will deplete its stored energy approximately one minute after the positive battery cable is disconnected.
--------------------------------------------
The DTCs can be retrieved with New Generation STAR (NGS) Tester using the Retrieve/Clear Continuous DTCs option. Any DTCs stored in the air bag diagnostic monitor will be displayed on the NGS along with a brief description of the DTC. If no DTCs are present, the NGS Tester will display a SYSTEM PASSED message. This option can also be used to clear DTCs from the air bag diagnostic monitor memory, as long as the concern no longer exists. Once a DTC is logged into the air bag diagnostic monitor memory, it will stay in memory until 255 key cycles have been recorded or until the NGS is used to erase the DTCs. Once 256 key cycles have been recorded since the concern was last detected, the DTC will automatically be removed from memory.

Jan 18, 2011 | 1997 Ford Expedition

1 Answer

Airbag light on. flashing 5 times 2 times then stays on


I think you have a false code stored due to your work. clear the code and you should be ok.
If the air bag indicator does not illuminate or the indicator stays on or flashes at any time, a fault has been detected by the air bag diagnostic monitor.
Diagnostic trouble codes (DTCs) may not be displayed for approximately 30 seconds after the ignition switch is placed in the RUN position. This is the amount of time the air bag diagnostic monitor requires to perform all tests and verify system faults.
Each DTC (a series of flashes and pauses of the air bag indicator):
  • Represents a two-digit number.
  • Is always displayed at least twice.
If the diagnostic monitor detects a fault in the air bag system, a diagnostic trouble code (DTC) will be written to the diagnostic monitor's Non-Volatile RAM (NVRAM). This DTC will then cause the lamp to flash a lamp fault code (LFC) on the air bag warning lamp and can be retrieved with the New Generation STAR (NGS) tester. After servicing the DTC may then be cleared from the NVRAM.
If a system fault is present and the air bag indicator is malfunctioning, an audible tone will be heard. The tone is a series of five sets of five beeps. If the tone is heard, the air bag system needs attention.
If a fault exists that makes unwanted air bag deployment possible, the air bag diagnostic monitor will attempt to remove deployment power by turning on a solid state switch to blow the 10A battery fuse.

If the 10A battery fuse has successfully been blown by the air bag diagnostic monitor, the air bag diagnostic monitor will not attempt to blow it again until the proper fault has been repaired and cleared (refer to Diagnostic Instructions). The air bag diagnostic monitor will store both the unwanted deployment diagnostic trouble code and the loss of deployment power diagnostic trouble code. The loss of deployment power diagnostic trouble code is the highest priority.
If a fault exists that makes unwanted air bag deployment possible, the air bag diagnostic monitor has an internal fuse that that will blow (open) automatically. This removes all power to the air bag deployment circuit.
DTCs are prioritized numerically. If two or more faults occur at the same time, the fault having the highest priority will be displayed first. After that fault has been corrected, the next highest priority fault will be displayed.
The air bag diagnostic monitor includes an internal backup power supply. This feature provides sufficient backup power to deploy the air bag in the event the battery (10655) or battery cables are damaged in a collision before safing and air bag sensors close. The backup power supply will deplete its stored energy approximately one minute after the positive battery cable is disconnected.
---------------------------------------------------------------
Once a DTC is logged into the air bag diagnostic monitor memory, it will stay in memory until 80 key cycles have been recorded or until the NGS is used to erase the DTCs. Once 256 key cycles have been recorded since the concern was last detected, the DTC will automatically be removed from memory.
--------------------------------------------------------------
Active Command Modes
This command allows the technician to verify operation of the air bag system, indicator and tone. When the air bag output command is executed, the indicator and the tone are simultaneously activated for approximately four seconds. Both devices are automatically deactivated.


Air Bag Diagnostic Monitor DTC Priority Table DTC LFC Description Action To Take B1342 24 Air bag diagnostic monitor is faulted (retrieved only during On-Demand Self Test) GO to Pinpoint Test P . B1867 12/52 Lost or low battery voltage GO to Pinpoint Test A . B1869 — No air bag indicator — inoperative indicator circuit GO to Pinpoint Test R . B1913 13/53 Air bag circuit shorted to ground — driver/passenger GO to Pinpoint Test B . B1914 14/54 Air bag sensor circuit shorted to ground GO to Pinpoint Test C . B1921 21 Air bag diagnostic monitor ground circuit open or not mounted to the vehicle properly GO to Pinpoint Test D . B1922 22 Safing sensor output circuit shorted to battery voltage GO to Pinpoint Test E . B1924 24 System disarm fault GO to Pinpoint Test P . B1932 32 Driver side air bag module circuit high resistance or open GO to Pinpoint Test F . B1933 33 Passenger side air bag module circuit high resistance or open GO to Pinpoint Test G . B1934 34 Driver side air bag module circuit low resistance or shorted GO to Pinpoint Test H . B1935 35 Passenger side air bag module circuit low resistance or shorted GO to Pinpoint Test J . B1941 41 RH air bag sensor feed/return circuit open GO to Pinpoint Test K . B1942 42 LH air bag sensor feed/return circuit open GO to Pinpoint Test L . B1944 44 RH air bag sensor not mounted to the vehicle properly or ground circuit open GO to Pinpoint Test M . B1945 45 LH air bag sensor not mounted to the vehicle properly or ground circuit open GO to Pinpoint Test N .
DTC - Diagnostic Trouble Code, retrieved using New Generation STAR (NGS) Tester.
LFC - Lamp Fault Code, flashed on air bag indicator.

May 21, 2009 | 1997 Ford F150 Regular Cab

1 Answer

Air bag sensor keeps flashing


If a concern is detected, the air bag control module will communicate by flashing the warning indicator. A diagnostic trouble code (DTC) is logged by the air bag control module in a nonvolatile memory. For additional information, refer to Diagnosis and Testing in this section.
Lamp Fault Codes (LFC)
Item Part Number Description 1 One flash cycle: Driver air bag trouble code 2 Two flash cycle: Passenger air bag trouble code 3 Three flash cycle: Trouble code common to both driver and passenger air bag circuit 4 Four flash cycle: Safety belt pretensioner trouble code common to both driver and passenger pretensioner circuits 5 Five flash cycle: Driver side air bag trouble code 6 Six flash cycle: Passenger side air bag trouble code 7 Not used 8 Not used

Apr 10, 2009 | 2001 Ford Focus

1 Answer

Airbag flashes 10 times misses a flash then repeats


Try clearing the codes & see if it returns. I do not see a code fault 10. Starts at 12.

---------------------------------------------------------------------
Section 01-20B: Restraints, Passive — Supplemental Air Bag System 1995 Town Car, Crown Victoria, Grand Marquis Workshop Manual DIAGNOSIS AND TESTING Diagnostic Trouble Code Clearing Procedure to Clear Diagnostic Trouble Codes from Diagnostic Monitor Non-Volatile Random Access Memory.
Normal Operation
The air bag diagnostic monitor (14B056) continually checks the air bag system for readiness. When a fault condition is detected, the DTC associated with that fault is stored in the air bag diagnostic monitor's Non-Volatile Random Access Memory (NVRAM). After writing the DTC to NVRAM, the air bag diagnostic monitor signals the fault by flashing the appropriate diagnostic trouble code on the air bag indicator. The diagnostic trouble code written to NVRAM is permanently stored in the air bag diagnostic monitor until cleared by the diagnostic trouble code clearing procedure.
  • Upon each cycle of the ignition switch (11572) , the air bag diagnostic monitor checks for diagnostic trouble codes written in NVRAM. If any diagnostic trouble codes exist in NVRAM, the air bag diagnostic monitor will then check to see if these fault conditions are still present.
  • If the conditions of the diagnostic trouble code in NVRAM are still present, then the air bag diagnostic monitor will use the air bag indicator to flash out the diagnostic trouble code number that was written in memory.
  • If the conditions of the diagnostic trouble code are not still present (indicating an intermittent or serviced fault), the air bag diagnostic monitor will use the air bag indicator to flash out a DTC which is the sum of the diagnostic trouble code in NVRAM plus 40.
Example: Due to corrosion, high resistance develops on the driver side air bag circuit. The air bag diagnostic monitor stores a diagnostic trouble code 32 in NVRAM. Upon each cycle of the ignition switch , the air bag diagnostic monitor checks the resistance of the driver air bag circuit.
  • If the resistance is still high, the air bag diagnostic monitor causes the air bag indicator to flash out a DTC 32.
  • If the resistance falls within the normal range due to service or an intermittent condition, the air bag diagnostic monitor causes DTC 72 to be flashed on the air bag indicator.
Once a fault has been serviced, the associated diagnostic trouble code may be cleared from NVRAM. Only diagnostic trouble codes that the air bag diagnostic monitor sees as repaired or intermittent may be cleared (diagnostic trouble codes 52 and above). In no circumstances can hard fault conditions (diagnostic trouble codes 45 and below) be cleared.
  1. Follow the diagnostic procedures as outlined to service the fault condition flashing on the air bag indicator.
  1. Cycle the ignition switch to OFF and then to RUN.
  1. Observe air bag indicator prove-out (six ± two seconds) followed by diagnostic trouble code (52-85) flashing completely one time.
  1. Locate the Diagnostic "Trouble Code Clear" Connector located underneath the glove compartment (06010) containing Circuits 631 (T/R) and 57 (BK).
  1. Use a jumper wire to short Circuit 631 (T/R) to Circuit 57 (BK) or to another good ground. This short must be made after the diagnostic trouble code flashes completely one time, but before the warning light stays on continuously.
  1. Hold short until air bag diagnostic monitor tone sounds (approximately five seconds).
  1. Release short on Circuit 631 (TAN/RED STRIPE) to Circuit 57 (BLACK). This short must be released within 25 seconds after the diagnostic monitor tone sounds. Diagnostic trouble code is now cleared from NVRAM. Next highest priority diagnostic trouble code stored in NVRAM (if one exists) will begin flashing.

Feb 09, 2009 | 1995 Lincoln Town Car

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