Grand Voyager V6-201 3.3L VIN R SMFI (1997)
Technical Service Bulletin # 18-05-99
Date: 990226
PCM - Sag/Hesitation/Stumble/Stall
NUMBER: 18-05-99
GROUP: Vehicle Performance
DATE: Feb. 26, 1999
SUBJECT:
Sags/Hesitation/Stumble/Start & Stall, A/C Bump Improvements, Addition Of Leak Detection Pump (LDP) Monitor Test
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the powertrain control module (PCM) with new software (calibration changes).
MODELS:
1997 - 1998 (NS) Town & Country/Caravan/Voyager
SYMPTOM/CONDITION:
1997/1998 3.0L ATX Powertrains
^
Sags/Hesitation/Stumble/Start & Stall after a cold start in ambient temperatures of -7° - 30° C (20° - 86° F). This condition may persist for up to a
minute into a drive cycle and is attributed to high driveability index (DI) fuel. See TSB 14-08-97 for more detail on Driveability Index fuel.
1997/1998 2.4/3.0/3.3/3.8L Powertrains
^
Provides further enhancements to the software originally released in Technical Service Bulletins 18-19-97 Rev A dated Oct. 17, 1997 and 18-20-98
dated Apr. 17, 1998 for "Bump" Feel during A/C Compressor Engagement. See TSB 18-19-97A and/or 18-20-98 for further details regarding this
subject.
1997/1998 2.4/3.0/3.3/3.8L Powertrains Equipped With Leak Detection Pump (1998 California Emission (Sales Code NAE) only included LDP)
^
Addition of LDP Monitor Test. This test makes the DRB III(R) capable of running the LDP monitor. This will allow technicians to verify LDP
repairs easily.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS/MDS2) and or the Diagnostic Scan Tool (DRB III(R)) 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 and the customer has described the above symptoms, 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
CH7OOO/7001
J1962 Cable
1
MDS1 or MDS2
NOTE:
THE MDS1/MDS2 AND DRB III(R) ARE REQUIRED TO PERFORM PART OF THIS REPAIR. IF USING THE MDSl AND DRB III(R) THE
MDS MUST BE OPERATING AT RELEASE 21 OR HIGHER AND TIL CD RELEASE 1179 OR HIGHER MUST BE INSTALLED. IF USING
THE MDS2 AND DRB III(R) THE SYSTEM MUST BE OPERATING AT CIS CD2030 OR HIGHER.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
