ABS System - 4WABS Lamp On/False ABS Codes In Memory

Article No.
98-5A-42

03/18/98

^ BRAKES - 4-WHEEL ANTI-LOCK BRAKE SYSTEM
(4WABS) - ABS LAMP ILLUMINATED - FALSE ABS
CODES IN MEMORY - VEHICLES BUILT THROUGH
2/23/96

^ LAMP - ANTI-LOCK BRAKE SYSTEM (ABS) LAMP
ILLUMINATED - FALSE ABS CODES IN MEMORY -
VEHICLES BUILT THROUGH 2/23/96 WITH 4-WHEEL
ANTI-LOCK BRAKE SYSTEM (4WABS)

LIGHT TRUCK:
1994-96 ECONOLINE

ISSUE:
The Anti-lock Brake System (ABS) lamp remains on after the vehicle is started and six (6) ABS codes are stored in memory on some vehicles. This may be due to the programming in the 4WABS module.

ACTION:
Replace the 4WABS module with a revised module. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. Confirm the vehicle has all of the following ABS codes in memory:

NOTE:
NO MORE, OR LESS, OF THE FOLLOWING CODES MUST BE PRESENT FOR THIS CONCERN.

^ B1342 - ABS Electronic Control Module (ECU) failure

^ C1222 - Wheel speed mismatch

^ C1115 - Power relay output short circuit to battery

^ C1184 - System timeout

^ C1220 - Warning lamp output short circuit to battery

^ C1226 - Brake warning lamp output short circuit to ground





2. If all six (6) codes are present, refer to the 1995 Econoline Service Manual, Pages 06-09B-106 and 06-09B-107 in order to replace the ABS module. Refer to the Application Chart for correct ABS module replacement.

PART NUMBER PART NAME

F6UZ-2B373-BA ABS Module
F6UZ-2B373-CA ABS Module
F6UZ-2B373-EA ABS Module

OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 96-7-21
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

985A42A Perform Diagnosis And 0.8 Hr.
Replace Anti-Lock Brake
System Module

DEALER CODING
CONDITION
BASIC PART NO. CODE
2B373 42

OASIS CODES: 206000, 301000