RAM 3500 Truck 4WD V8-360 5.9L VIN 5 Magnum (1998)
Technical Service Bulletin # 18-08-00
Date: 000623
MIL ON, Erroneous DTC P0107 Set
NUMBER: 18-08-00
GROUP: Vehicle Performance
DATE: June 23, 2000
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-03-99, DATED FEB. 19, 1999, WHICH SHOULD BE REMOVED FROM
YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE REVISED MODEL YEARS.
SUBJECT:
Erroneous MIL Illumination Due To DTC P0107 - Map Sensor Voltage Too Low
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (calibration change
96Cal18, 97Cal18 and 98Cal12).
**MODELS:**
**1996** - 1998 (AB)
Ram Van
**1996** - 1998 (AN)
Dakota
**1996** - 1998 (BR/BE)
Ram Truck
1998
(DN)
Durango
**1997** - 1998 (TJ)
Wrangler
**1996** - 1998 (XJ)
Cherokee
**1996** - 1998 (ZJ)
Grand Cherokee
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH GASOLINE ENGINE.
SYMPTOM/CONDITION:
Erroneous MIL illumination with DTC P0107 - MAP SENSOR VOLTAGE TOO LOW. This may occur during downhill decelerations at altitude or
when performing off-road maneuvers when the engine is operating over 1500 rpm. The MIL illuminates due to the monitor running during incorrect
parameters.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III(R)), with the appropriate Diagnostic Procedures Manual, verify
that all engine and 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, and the above symptom has been experienced, perform the
Repair Procedure.
NOTE:
WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE
REPLACEMENT CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO
UPDATE REPLACED CONTROLLERS AS NECESSARY.
PARTS REQUIRED:
1
04669020
Label, Authorized Software Update
1
04275086
Label, Authorized Modification
EQUIPMENT REQUIRED:
1
CH6OOO
Scan Tool (DRB III(R))
1
CH7035
General Purpose Interface Bus Cable (GPIB)
1
CH700017001
J1962 Cable
1
MDS2
NOTE:
THE MDS2 AND DRB III(R) ARE REQUIRED TO PERFORM PART OF THIS REPAIR. WHEN USING THE MDS2 AND THE DRB III(R),
THE SYSTEM MUST BE OPERATING AT CIS CD 2061 OR HIGHER.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE: