RAM 3500 Truck 4WD V8-360 5.9L VIN 5 Magnum (1998)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - Incorrect Fault Mature Time for DTC#B7
NO: 18-36-97
GROUP: Vehicle Performance
DATE: Dec. 31, 1997
SUBJECT:
Incorrect Fault Mature Time - DTC $B7 Leak Detection Pump Solenoid Circuit
MODELS:
1998 (AB)
Ram Van/Wagon
1998 (AN)
Dakota
1998 (BR/BE) Ram Truck
1998 (DN)
Durango
1998 (SR)
Viper Roadster/Coupe
1998 (TJ)
Wrangler
1998 (XJ)
Cherokee
1998 (ZJ)
Grand Cherokee
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO NOV. 20, 1997 (MDH 1120XX) WITH GASOLINE ENGINES AND SALES
CODE NAE (CALIFORNIA EMISSIONS).
DISCUSSION:
Hex code $B7 - LEAK DETECTION PUMP SOLENOID CIRCUIT is a one trip DTC. Its purpose is to detect electrical shorts or opens in the LDP
solenoid circuit. The time it takes for this DTC to mature has been determined to take too long.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all
engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as
necessary before proceeding further with this bulletin. If no DTC's are present, perform the Repair Procedure.
NOTE:
WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE
REPLACEMENT PCM SHOULD BE VERIFIED FOR THE LATEST REVISION LEVEL.
EQUIPMENT/PARTS REQUIRED:
1
CH6000
Scan Tool (DRB III)
1
CH7035
General Purpose Interface Bus Cable (GPIB)
1
0H7000/7001
J1962 Cable
1
04669020
Label - Authorized Software Update
1
04275086
Label - Authorized Modification
NOTE:
THE MDS AND DRB III ARE REQUIRED TO PERFORM THIS REPAIR AND THE SYSTEM MUST BE OPERATING WITH RELEASE 21
OR HIGHER AND TIL CD RELEASE 1147 OR HIGHER MUST BE INSTALLED.
REPAIR PROCEDURE:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration changes) for the
condition listed.
NOTE:
FOR XJ VEHICLES EQUIPPED WITH AN AISIN WARNER TRANSMISSION, DTC $BE (CCD MESSAGE FROM JTEC FAILURE) CAN BE
SET WITHIN THE EATX MODULE DUE TO THE PCM FLASH AND THE DTC GENERATED WITHIN THE EATX MAY SET DTC $89
(EATX CONTROLLER DTC PRESENT) WITHIN THE PCM. CHECK FOR AND ERASE THESE FAULTS PRIOR TO RETURNING THE
VEHICLE TO THE CUSTOMER.
1.
Connect the MDS (Mopar Diagnostic System) and DRB III (Scan Tool) to the vehicle and power them up.
2.
Use the arrow keys and select # 2 MDS DIAGNOSTICS on the DRB III MAIN MENU Screen.
3.
Use the arrow keys and select DIAGNOSTIC MENU on the MDS, then press NEXT MENU.