ABS - Warning Lamp ON Intermittently
NO: 05-23-94GROUP: Brakes
DATE: Nov. 11, 1994
SUBJECT:
Intermittent ABS Amber Warning Lamp Illumination
MODELS:
1995 (LH) Concorde/intrepid/Vision/LHS/New Yorker
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH ABS (SALES CODE BRT). IT DOES NOT APPLY TO TRACTION CONTROL EQUIPPED VEHICLES.
SYMPTOM/CONDITION:
ABS yellow warning lamp illuminated until next ignition cycle. Intermittent "pump motor circuit" Diagnostic Trouble Code (DTC) set. Normal power assisted service brakes remain fully functional even when the yellow ABS warning lamp is illuminated.
DIAGNOSIS:
Using the Scan Tool (DRB III), Release 14 or higher, check for DTC'S. If "pump motor circuit" is stored in memory, perform the repair procedure below. If other DTC's are present, diagnose and repair as required.
PARTS REQUIRED:
AR 4607036 Pump Motor Relay
AR 4605700 Controller Anti-Lock Brakes (CAB)
REPAIR PROCEDURE:
This bulletin involves inspecting the pump motor relay and CAB build date code and replacing as necessary.
1. Inspect pump motor relay date code. A Julian date code has been imprinted on the inboard side (side facing engine) of the relay. If the date code is between 1874 and 2334, replace the pump motor relay with a relay of date code NOT between 1874 and 2334.
2. Hook up the DRB III. Erase the existing "pump motor circuit" DTC.
3. Using the "pump test" feature, run the pump test 25-50 times. Access the pump test as follows:
Select System:
5. ANTILOCK BRAKES
2. TEVES ABS
1. SYSTEM TEST
2. PUMP TEST
4. Check for DTC'S. If a "pump motor circuit" DTC is stored in memory proceed to step 5.
5. Inspect the CAB. A build date is printed on the smaller white label on the outboard (fender facing) side of the controller. If the build date is between 07/14/94 and 07/18/94, or 07/28/94 and 08/04/94, proceed to step 6.
6. Remove and replace the CAB.
7. Test drive vehicle to ensure proper ABS performance.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-65-56-90 Relay Pump Motor 0.3 Hrs.
08-19-10-93 Module Controller Antilock Brakes 2.0 Hrs.
FAILURE CODE: P8 - New Part