Freestar V6-4.2L VIN 2 (2004)
Air Bag Control Module: Customer Interest
Restraint System - SRS Lamp ON/DTC B1342 Set
TSB 04-25-15
12/27/04
DIAGNOSTIC TROUBLE CODE (DTC) B1342 -
RESTRAINT CONTROL MODULE (RCM) -
DIAGNOSTIC SERVICE TIP
FORD:
2001-2004 Crown Victoria
2001-2003 Windstar
2004-2005 Freestar
LINCOLN:
2001-2004 Town Car
MERCURY:
2001-2004 Grand Marquis
2004-2005 Monterey
This article supersedes TSB 04-13-6 to add a vehicle line and update the Service Procedure.
ISSUE
Some vehicles may exhibit the airbag warning indicator illuminated and DTC B1342 present in the restraint control module (RCM). The DTC can be set
by an impact severity (crash) sensor, shorted airbag wiring or the RCM.
ACTION
Determine whether the vehicle is equipped with side airbags, or not. Follow the appropriate Service Procedure below to determine the cause.
SERVICE PROCEDURE - VEHICLES WITH SIDE AIRBAGS
NOTE
SIDE IMPACT SENSORS ARE LOCATED IN THE B-PILLAR OR THE SEAT RISER PAN AREA (REFER TO THE ONLINE WIRING
DIAGRAMS FOR LOCATION). FREESTAR/MONTEREY VEHICLES, EQUIPPED WITH SIDE AIR CURTAINS, WILL ALSO HAVE AN
ADDITIONAL IMPACT SENSOR IN EACH C-PILLAR.
1.
Begin by disconnecting the forward (front) impact severity (crash) sensor and attempting to clear the B1342 DTC.
a.
If the B1342 clears and only a B2296 remains, replace the front impact severity sensor.
b.
If DTC B1342 is still present, reconnect the front impact severity sensor and continue by disconnecting each SIDE impact severity sensor,
one at a time. Attempt to clear the B1342 DTC.
(1)
If DTC B1342 will clear after any side impact sensor is disconnected, and only DTC B2296 is still present, replace that impact sensor.
Clear DTCs and return the vehicle to the customer.
(2)
If DTC B1342 is still present after disconnecting each side impact sensor and after attempting to clear the DTC, proceed to Step 2.
2.
Check circuits to the front and side impact sensors for shorts to ground, verify power and ground circuits to the RCM.
a.
If concerns are found, repair wiring as necessary, clear DTCs and return vehicle to the customer.
b.
If no power or ground related faults are found, replace the RCM. Clear DTCs and return vehicle to the customer.
(1)
If B1342 is still present after replacing RCM, a cross-circuit (short) between airbag or pretensioner firing loops may be the cause.
Proceed to CROSS-CIRCUIT SHORT DIAGNOSIS.
CROSS-CIRCUIT SHORT DIAGNOSIS USING NGS
- VEHICLES WITH SIDE AIRBAGS
1.
Select the appropriate "Vehicle and Engine Selection".
2.
Select "DIAGNOSTIC DATA LINK" and press Trigger.
