PCM - MIL ON/DTC's Set/Driveability Concerns
NO: 18-13-96GROUP: Vehicle Performance
DATE: Mar. 29, 1996
SUBJECT:
Erroneous MIL Illumination/Cold Engine Sag/Rough Idle
MODELS:
1996 (FJ) Avenger/Sebring Coupe
1996 (JA) Breeze/Cirrus/Stratus
1996 (JX) Sebring Convertible
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO FEB. 13, 1996 (MDH 02-13-XX) EQUIPPED WITH A 2.4L OR 2.5L ENGINE.
SYMPTOM/CONDITION:
Symptom 1:
Erroneous MIL Illumination and On Board Diagnostics II (OBD II) Diagnostic Trouble Codes (DTC's) Hex Code 1B and/or Hex Code 84 (TPS Voltage High and/or TPS Voltage Does Not Agree With Map) exist without loss of vehicle performance. This symptom applies to all engines.
Symptom 2:
Engine sag or hesitation following a cold engine start at ambients of 40°C to 60°F. This symptom applies only to JA/JX vehicles equipped with a 2.5L engine.
Symptom 3:
Rough idle and/or idle undershoot immediately following a hot or cold start. This symptom applies to all engines.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the DRB III Scan Tool and appropriate Diagnostic Procedure Manual, verify that all engine systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) other than those listed are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If only DTC's Hex 1B and/or Hex 84 are present, or no DTC's are present and all systems are functioning correctly, perform the Repair Procedure.
EQUIPMENT/PARTS REQUIRED:
1 CH6000 Scan Tool (DRB III)
1 CH7035 General Purpose Interface Bus Cable (GPIB)
1 CH7000 J1962 Cable
1 4669020 Label - Authorized Software Update
1 4275086 Label - Authorized Modification
NOTE:
THE MOPAR DIAGNOSTIC SYSTEM IS REQUIRED TO PERFORM THE FOLLOWING REPAIR AND THE SYSTEM MUST BE OPERATING WITH RELEASE 19 OR HIGHER AND TIL CD RELEASE 1104 OR HIGHER MUST BE INSTALLED.
REPAIR PROCEDURE:
This bulletin involves reprogramming (flashing) the PCM with new software (calibrations).
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" and attach it to the PCM and cover the label with a clear plastic sticker.
10. Type the necessary information on the Authorized Modification Label and attach the label near the under hood Vehicle Emission Control Information (VECI) Label.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-19-45-90 0.5 Hrs.
FAILURE CODE: FM - Flash Module