Air bag codes

B2293

Pinpoint Test H: LFC 19 and 21/DTC B2293 - Restraint System Airbag Status
Normal Operation
The restraints control module (RCM) checks all of the front air bag circuits for faults. If the RCM detects one of the following faults on any of the front air bag circuits, it will store diagnostic trouble code (DTC) B2293 in memory and, depending on the fault, flash either lamp fault code (LFC) 19 or 21 (or higher priority code if one exists) on the air bag indicator.
Fault Conditions
The RCM monitors for the following fault conditions:

• low resistance.
• circuit open.
• circuit short to voltage.
• circuit short to ground.

Possible Causes
A driver air bag status fault can be caused by:

• damaged wiring, terminals, or connectors.
• a faulty clockspring.
• a faulty driver air bag module.
• RCM is faulted.

A passenger air bag status fault can be caused by:

• damaged wiring, terminals, or connectors.
• a faulty passenger air bag module.
• RCM is faulted.

21 Restraint System - Air Bag Status (Passenger Front Air Bag Circuit Fault) Go To Pinpoint Test H .

If the air bag light is on there is a code stored in the SRS restraint module - air bags ! Wiring problem , impact sensor ! First place to start is have the vehicle check for codes . Not with OBD2 code reader., factory or professional grade scan tool . If you have not worked on air bag systems I recommend you take it to a ASE certified repair shop or the dealer . People have been killed by accidental air bag deployment , by not knowing what's up . Takes special tools !

94+ AIR BAG DIAGNOSTIC TROUBLE CODES/CLEARING
Code Component/Fault Description

No Air Bag Indicator - Inoperative Indicator Circuit
Continuous Air Bag Indicator - Diagnostic Trouble Code Timed Out, Diagnostic Monitor Disconnected or Inoperative, or No Ignition Voltage to Diagnostic Monitor.
12 Lost Battery Feed
13 Air Bag Circuit Shorted to Ground
14 Primary Crash Sensor Circuit Shorted to Ground
21 Diagnostic Monitor Not Mounted to Vehicle Properly
22 Safing Sensor Output Circuit Shorted to Battery Voltage
23 Memory Clear Circuit Improperly Grounded
24 System Disarm Failure or Internal Diagnostic Monitor Fault
32 Driver Side Air Bag Circuit High Resistance or Open
33 Passenger Side Air Bag Circuit High Resistance or Open
34 Driver Side Air Bag Circuit Low Resistance or Shorted
35 Passenger Side Air Bag Circuit Low Resistance or Shorted
41 RH Radiator Primary Crash Sensor Feed/Return Circuit Open
42 LH Radiator Primary Crash Sensor Feed/Return Circuit Open
44 RH Radiator Primary Crash Sensor Not Mounted to Vehicle Properly
45 LH Radiator Primary Crash Sensor Not Mounted to Vehicle Properly
52 Intermittent or Repaired Lost Battery Feed
53 Intermittent or Repaired Air Bag Circuit Shorted to Ground
54 Intermittent or Repaired Primary Crash Sensor Circuit Shorted to Ground
61 Intermittent or Repaired Diagnostic Monitor Not Mounted to Vehicle Properly
62 Intermittent or Repaired Safing Sensor Output Circuit Shorted to Battery Voltage
63 Intermittent or Repaired Memory Clear Circuit Improperly Grounded
64 Intermittent or Repaired System Disarm Failure or Internal Diagnostic Monitor Fault
72 Intermittent or Repaired Driver Side Air Bag Circuit High Resistance or Open
73 Intermittent or Repaired Passenger Side Air Bag Circuit High Resistance or Open
74 Intermittent or Repaired Driver Side Air Bag Circuit Low Resistance or Shorted
75 Intermittent or Repaired Passenger Side Air Bag Circuit Low Resistance or Shorted
81 Intermittent or Repaired RH Radiator Primary Crash Sensor Feed/Return Circuit Open
82 Intermittent or Repaired LH Radiator Primary Crash Sensor Feed/Return Circuit Open
84 Intermittent or Repaired RH Radiator Primary Crash Sensor Not Mounted to Vehicle
85 Intermittent or Repaired LH Radiator Primary Crash Sensor Not Mounted to Vehicle
Rapid Continuous Flashing of Air Bag Indicator (No Diagnostic Trouble Code) Both Primary Crash Sensors Disconnected Assembly Plant Mode

TROUBLE CODE CLEARING

1. Follow the diagnostic procedures to service the fault condition flashing on the air bag indicator prior to code clearing.

2. Cycle the ignition switch to OFF and then to RUN.

3. Observe air bag indicator prove-out (six ? two seconds) followed by diagnostic trouble code (52-85) flashing completely one time.

4. Locate the Diagnostic "Trouble Code Clear" Connector (grey connector). located underneath the glove compartment, left side (06010) containing Circuits 631 (T/R) and 57 (BK).

5. 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.

6. Hold short until air bag diagnostic monitor tone sounds (approximately five seconds).

7. Release short on Circuit 631 (T/R) to Circuit 57 (BK). This short must be released within 25 seconds after the diagnostic monitor tone sounds.

Diagnostic trouble code is now cleared from memory. Next highest priority diagnostic trouble code stored (if one exists) will begin flashing.

The codes and clearing proceedure above are to be used as a guide, NO claims are implied as to the correctness or accuracy of either.

Code 21 is for the passenger side air bag circuit. Could be the air bag, the seat sensor, or a wiring problem.

To manually check air bag codes, turn the key On and push the driver's door switch (at the bottom of the B-pillar) 5 times or more within 7 seconds of turning the key ON. Then watch the air bag light flashing codes. The air bag light will come ON for 3 seconds and then give fast flashes if there is a code. Count the fast flashes as the code. So the air bag light on for 3 seconds and then 8 flashes is a code 8 for the passenger air bag circuit. after counting code clear codes and see if they come back

I was unable to locate code 31 in my book here is a copy of the codes. looks like you just need a fuse for #51. this may fix 31 as well.

Diagnostic Trouble Code Table 1994

AIR BAG DIAGNOSTIC MONITOR DIAGNOSTIC TROUBLE CODE PRIORITY TABLE
Priority Code Component/Fault Description
Highest - No Air Bag Indicator - Inoperative Lamp Circuit or No Ignition
Voltage to Air Bag Diagnostic Monitor

Continuous Air Bag Indicator - Air Bag Diagnostic Monitor
Disconnected or Inoperative
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
32 Driver Side Air Bag Module High Resistance or Open
33 Passenger Side Air Bag Module High Resistance or Open
34 Driver Side Air Bag Module Circuit Low Resistance or Shorted
35 Passenger Side Air Bag Module Low Resistance or Shorted
42 Center Radiator Primary Crash Sensor Feed/Return Open
44 Center Cowl Primary Crash Sensor Not Mounted to Vehicle Properly
45 Center Radiator Primary Crash Sensor Not Mounted to Vehicle Properly
51 Diagnostic Monitor Internal Thermal Fuse - Fuse Blown Due to
Intermittent Short to Ground
52 Backup Power Supply - Voltage Boost Fault
53 Primary Crash Sensor Circuits - Resistance to Ground or Air Bag
Diagnostic Monitor Failure

Lowest - Rapid Continuous Flashing of Air Bag Indicator (No DTC) All Primary

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

Yes, it's called a lamp fault code.

9 is not familiar to me. Call dealer service department and ask them what code means.

Here are codes for a 94 Aerostar. I don't have 91 Sable. Sorry.



Air Bag Diagnostic Monitor Diagnostic Trouble Code Priority Table Diagnostic Trouble Code Component/Fault Description — No Air Bag Indicator — Inoperative Indicator Circuit or No Battery Positive Voltage to Air Bag Diagnostic Monitor — Continuous Air Bag Indicator — Air Bag Diagnostic Monitor Disconnected or Inoperative 12 Low Battery Voltage 13 Air Bag Module or RH Cowl Side Panel Air Bag Sensor Circuit Shorted to Ground 21 LH Cowl Side Panel Air Bag Sensor Not Mounted to Vehicle Properly 22 LH Cowl Side Panel Air Bag Sensor Circuit Shorted to Battery Voltage 23 LH Cowl Side Panel Air Bag Sensor Circuit Input Feed/Return Circuit Open 24 LH Cowl Side Panel Air Bag Sensor Diagnostic Circuit Open or Low Resistance in Center Air Bag or Front Air Bag 32 Driver Side Air Bag Circuit High Resistance or Open 33 Passenger Side Air Bag Circuit High Resistance or Open 34 Driver Side Air Bag Circuit Low Resistance or Shorted 35 Passenger Side Air Bag Circuit Low Resistance or Shorted 41 Center Radiator and RH Cowl Side Panel Air Bag Sensor Circuits High Resistance or Open 44 RH Cowl Side Panel Air Bag Sensor Not Mounted to Vehicle Properly 45 Center Air Bag Sensor Not Mounted to Vehicle Properly 46 Open Splice Center Air Bag Sensor Ground Monitor 51 Air Bag Diagnostic Monitor Internal Thermal Fuse Blown and Short to Ground No Longer Exists 52 Backup Power Supply Voltage Boost Fault 53 Sensor Circuits Resistance to Ground or Internal Air Bag Diagnostic Monitor Fault — Rapid Continuous Flashing of Air Bag Indicator

I strongly suspect you have a bad connection or corroded connection at one of your connectors.

Here's the LFC (lamp Fault Codes) for 36:

B1993 36 22 Driver Side Air Bag Circuit Shorted to Ground GO to Pinpoint Test V . B1992 36 24 Driver Side Air Bag Circuit Shorted to Battery or Ignition GO to Pinpoint Test W . B1994 36 26 Driver Side Air Bag Circuit Resistance High GO to Pinpoint Test X . B1995 36 28 Driver Side Air Bag Circuit Resistance Low GO to Pinpoint Test Y .

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

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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.