THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-06-97, DATED FEB. 14, 1997 WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE CORRECTION OF THE "HEXCODE".

Engine will slowly crank and then start, immediately after starting the malfunction indicator light (MIL) will illuminate. When checked the "Idle Air Control(IAC)" will be set.

Using the Mopar Diagnostic System (MDS) or the Diagnostic Scan Tool (DRB III with the appropriate Diagnostic Procedures Manual), verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) other than any IAC related codes are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If the DTC for "Idle Air Control" Hex **$19** is found clear the code and perform the Repair Procedure.

NOTE: VEHICLES BUILT PRIOR TO AUGUST 1, 1994 (MDH 08-01-XX) MUST HAVE THE POWERTRAIN CONTROL MODULE (PCM) REPLACED BEFORE PROCEEDING WITH THIS REPAIR.

AR 04874154 Powertrain Control Module (2.OL MPI-FED-LOW ALT.- M/T)
AR 04874155 Powertrain Control Module (2.OL MPI-FED-HIGH ALT. & CAL- M/T)
AR 04874156 Powertrain Control Module (2.OL MPI-FED-LOW ALT.- 3ATX)
AR 04874157 Powertrain Control Module (2.OL MPI-FED & CAL- M/T)(ACR)
AR 04874158 Powertrain Control Module (2.OL MPI-FED-HIGH ALT. & CAL -3ATX)
1 04796440 Cable, Positive Battery Kit

EQUIPMENT REQUIRED:

1 CH6000 Scan Tool (DRB III )
1 CH7035 General Purpose Interface Bus Cable (GPIB)
1 CH7000/7001 J1962 Cable
1 4669020 Label - Authorized Software Update
1 4275086 Label -Authorized Modification

NOTE: THE MDS AND DRBIII ARE REQUIRED TO PERFORM THIS REPAIR AND THE SYSTEM MUST BE OPERATING WITH RELEASE 21 OR HIGHER AND TILCD RELEASE 1125 OR HIGHER MUST BE INSTALLED.

This repair involves cleaning or replacing the positive battery cable, replacing the PCM on early built vehicles and selectively erasing and reprogramming the Powertrain Control Module(PCM) with new software (calibration changes).

POSITIVE BATTERY CABLE REPLACEMENT:

1. Record preset radio settings.
2. With the ignition key in the OFF position, disconnect the negative battery terminal.
3. Disconnect the positive battery terminal and remove and discard the entire cable assembly.
4. Install the new positive battery cable double eyelet to the power distribution center (PDC). Torque each nut to 35 in.lb. (4 Nm).
5. Install the bolt/stud to the starter cable eyelet with the flats of the starter cable aligned with the flats on the bolt. Torque to 105 in.lbs. (12 Nm).
6. Clean both battery posts and inside of negative terminal.
7. Install the positive battery terminal and then the negative.

CAUTION: INSURE THAT THE TERMINALS ARE INSTALLED NO HIGHER THAN FLUSH WITH THE POSTS. THIS WILL INSURE THAT THE THERMOGUARD WILL SNAP TOGETHER PROPERLY.

8. Torque each terminal to 7.4 Nm (65 in.lbs.) and coat the top of the positive terminal with grease.

NOTE: TURN THE IGNITION KEY TO THE ON POSITION AND DO NOT START THE ENGINE FOR TWO TO THREE SECONDS. THIS WILL ALLOW THE IAC TO POSITION ITSELF AND PREVENT STALLING.

9. Verify proper charging system operation before proceeding.
10. Reset radio preset recorded in step 1.

POWERTRAIN CONTROL MODULE FLASH PROCEDURE:

1. If the vehicle was built prior to August 1, 1994 (MDH 08-01-XX) replace the PCM before proceeding.
2. Connect the MDS (Mopar Diagnostic System) and DRB III (Scan Tool) to the vehicle and power them up.
3. Use the arrow keys and select #2 MDS DIAGNOSTICS on the DRB III MAIN MENU Screen.
4. Use the arrow keys and select DIAGNOSTIC MENU on the MDS, then press NEXT MENU.
5. Use the arrow keys and select VEHICLE CONTROLLER PROGRAMMING on the MDS, then press NEXT MENU.
6. Use the arrow keys and select PROGRAMMING OF ALL OTHER CONTROLLERS USING MDS & DRBIII on the MDS, then press NEXT MENU.
7. 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.
8. 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.
9. 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.

10. Type the necessary information on the "Authorized Software Update Label" P/N4669020. Attach the label to the PCM and cover the label with the clear plastic overlay
11. Type the necessary information on the Authorized Modification Label and attach the label near the VECI Label.
12. Start and run the vehicle, then check for DTC's and repair as needed.