PCM - Stall/Slow Rough Idle: Overview
NUMBER: 18-10-99GROUP: Vehicle Performance
DATE: May 28, 1999
SUBJECT:
Start And Stall Or Slow Rough Idle Immediately After Start-Up In Cold Ambient
Temperatures/Leak Detection Pump (LDP) Monitor Run Test Capability.
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration changes).
MODELS:
1998 (FJ) Avenger/Sebring
NOTE:
THIS INFORMATION APPLIES TO VEHICLES WITH A 2.5L ENGINE.
SYMPTOM/CONDITION:
Some vehicles may exhibit start and stall or slow rough idle immediately after start-up in ambient temperatures of 18° to 10° C (0° to 50° F). Additionally, this calibration reinstates the LDP Monitor Run test for vehicles equipped with this system.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS/MDS2) and or the Diagnostic Scan Tool (DRB Ill�) 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 symptom, 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 MDS1 AND DRB III(R) THE MDS MUST BE OPERATING AT RELEASE 21 OR HIGHER AND TIL CD RELEASE 1184 OR HIGHER MUST BE INSTALLED. IF USING THE MDS2 AND DRB III(R) THE SYSTEM MUST BE OPERATING AT CIS CD2034 OR HIGHER.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-19-42-91 0.5 Hrs.
FAILURE CODE: FM - Flash Module