PCM - Driveability Concerns and/or MIL Lamp ON
NO: 18-07-96GROUP: Vehicle Performance
DATE: Mar. 1, 1996
SUBJECT:
Driveability Improvements and/or Malfunction Indicator Light On
MODELS:
1996 (FJ) Avenger/Sebring/Talon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 2.0L DOHC (NON TURBO) ENGINE BUILT PRIOR TO FEBRUARY 15, 1996 MDH (02-15-XX).
SYMPTOM/CONDITION:
^ Idle speed flares/undershoots/instability/roughness/stall during warm up.
^ RPM undershoot after declutch (MTX).
^ A/C engagement RPM flare or surge while rolling at low speed or stopped with light brake application.
^ Vehicle bobble (MTX).
^ False Malfunction Indicator Light (MIL) illumination with Diagnostic Trouble Codes (DTC's) "DOWNSTREAM 02 SENSOR STAYS AT CENTER", "EGR SYSTEM FAILURE", "CYLINDER XX MIS-FIRE".
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) with the appropriate Diagnostic Procedure Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) other than the those listed are present, record them on the repair order and repair as necessary before proceeding further with this bulletin.
EQUIPMENT/PARTS REQUIRED:
All Symptoms (Flash Programming)
1 CH6000 Scan Tool (DRB III)
1 CH7035 General Purpose Interface Bus Cable (GPIB)
1 CH7010 J1962/MMC Cable
1 4669020 Label - Authorized Software Update
1 4275086 Label - Authorized Modification
NOTE:
THE MOPAR DIAGNOSTIC SYSTEM MAY BE REQUIRED TO PERFORM PART OF THE REPAIR AND THE SYSTEM MUST BE OPERATING WITH RELEASE 19 OR HIGHER AND TIL CD RELEASE 1099 OR HIGHER MUST BE INSTALLED.
REPAIR PROCEDURE:
This repair involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration changes) for all conditions listed.
Flash Programming (All Symptoms)
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.
4. Use the arrow keys and select CONTROLLER PROGRAMMING on the MDS, then press NEXT MENU.
5. Use the arrow keys and select PROGRAM VEHICLE CONTROLLER on the MDS, then press NEXT MENU.
6. Follow the steps presented on the MDS and DRB III which will allow the DRB III to obtain the current part number of the PCM.
7. The MDS will display the part number of the PCM on the vehicle and the appropriate replacement part number, then press NEXT MENU to begin programming.
If the PCM on the vehicle has already been updated or programmed, a NO UPDATES AVAILABLE message will be displayed. Check the part number of the PCM on the vehicle and compare it to the part number displayed. If the PCM has already been updated, then another condition exists that will require further diagnosis and repair.
8. The MDS and DRB III will prompt for any operator action needed during the remainder of the programming process.
NOTE:
THE FOLLOWING STEPS ARE REQUIRED BY LAW.
9. Type the necessary information on the "Authorized Software Update Label" P/N 4669020. Attach the label to the PCM and cover the label with the clear plastic overlay.
10. Type the necessary information on the Authorized Modification Label and attach the label near the VECI Label.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-19-44-94 0.5 Hrs.
FAILURE CODE: FM - Flash Module