Air Bag System - Warning Lamp ON/DTC's B1877 or B1881

Article No.
04-2-4

02/09/04

^ BODY - SAFETY BELT PRETENSIONER
DIAGNOSTIC TROUBLE CODES (DTC) B1877
AND/OR B1881

^ ELECTRICAL - SAFETY BELT PRETENSIONER
DIAGNOSTIC TROUBLE CODES (DTC) B1877
AND/OR B1881

FORD:
2001-2003 RANGER

This article supersedes TSB 03-6-9 to update the service procedure.

ISSUE

Some vehicles may exhibit the Airbag Warning Lamp illuminated and Diagnostic Trouble Codes (DTC's) B1877 (Driver Pretensioner Circuit Resistance High) and/or B1881 (Passenger Pretensioner Circuit Resistance High), indicating a high resistance in the Safety Belt Pretensioner Circuit. Workshop Manual diagnostic routines may not identify the wiring connector as the cause. This issue may be caused by fretting/oxidation/corrosion in the wiring terminals in connector C3014 on the driver side seat bottom or C303 on the passenger side seat bottom near each safety belt pretensioner assembly.

ACTION

To service, clean the safety belt pretensioner connector terminals and tape off the wiring to isolate the harness connector and terminals from stress and vibration. Even if a DTC is received for only one pretensioner, perform the rerouting and anchoring for both sides. Refer to the following Service Procedure.

SERVICE PROCEDURE

1. Depower the Supplemental Restraint System following the Depowering Procedure in Section 501-20B General Procedures of the Workshop Manual.

2. Slide the driver and passenger seats forward to allow access to the pretensioner connectors mounted to the rear of the seat bottom.

3. Disconnect connectors C3014 and C303 from the seat side of the wire harness.








4. Bend the driver side 14401 harness over the wire harness connector and apply tape as shown (Figure 1). Repeat for the passenger side harness and connector as shown (Figure 2). Be sure to orient the wire on the connector as illustrated or the wire harness may bind after installation.

5. Spray Deoxit (# D55-6) Electrical Contact Cleaner/Lubricant on both pins in the male and female sides of the connectors. Spray for two seconds into each connector side to load the terminal pins.

NOTE
DEOXIT SPRAY (D5S-6) CAN BE OBTAINED BY CALLING CAIG LABORATORIES, INC. AT 800-224-41 (PACIFIC TIME). ONE SPRAY CONTAINER COULD POTENTIALLY TREAT 200-300 VEHICLES.

6. Wipe off any excess liquid from the exterior of the connectors and harnesses and reconnect both C3014 and C303.

7. Repower the supplemental restraint system following the repowering procedure in Section 501-20B General Procedures of the Workshop Manual.

8. Clear all Diagnostic Trouble Codes (DTCs) from the Restraints Control Module (RCM) and retest.





Parts Block

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 03-6-9

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

OPERATION DESCRIPTION TIME

040204A Clean The Safety Belt 0.6 Hr.
Pretensioner Connector
Terminals (Includes Time
To Check For Codes,
Depower The
Supplemental Restraint
System, Clean Terminals
On Both Seats, Then
Repower Supplemental
Restraint System, Clear
Codes And Retest

DEALER CODING
CONDITION
BASIC PART NO. CODE
14401 X2





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