2500 4x4 Pickup V8-360 5.9L VIN 5 Magnum (1994)
Service Procedure
REPAIR PROCEDURE:
This bulletin involves replacing the Powertrain Control Module (PCM), and then reprogramming the module in 1994 model year. 1995 model year
vehicles are reprogrammed only.
Module Replacement
MODULE REPLACEMENT:
This section of the bulletin involves the replacement of the powertrain control module (PCM) with P/N 4797174.
1.
Record all radio station presets.
2.
Disconnect negative battery cable at battery.
3.
Remove 60 way electrical connector from PCM (one bolt). PCM is located in the right rear side of the engine compartment.
4.
Remove the three PCM mounting bolts.
5.
Install new PCM, P/N 4797174 Torque bolts to 1 N-m (9 in.lbs.) torque.
6.
Connect 60 way electrical connector to PCM. Torque bolt to 4 N-m (35 in.lbs.).
7.
Connect negative battery cable to battery.
8.
Program radio station presets and clock.
Module Reprogramming
*MODULE REPROGRAMMING:*
This section of the bulletin involves reprogramming the powertrain control module with new software and installation of appropriate labels.
NOTE:
THE MOPAR DIAGNOSTIC SYSTEM IS REQUIRED TO PERFORM THE FOLLOWING REPAIR. THE SYSTEM MUST BE OPERATING
WITH RELEASE 16 OR HIGHER INSTALLED (TILL CD 77 OR LATER).
This repair involves selectively erasing and reprogramming the Powertrain Control Module with new software (calibration change).
1.
Connect the MDS (Mopar Diagnostic System) and DRBIII (Scan Tool) to the vehicle and power them up.
2.
Use the arrow keys and select # 2 MDS DIAGNOSTICS on the DRBIII 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 CONTROLLER PART on the MDS, then press NEXT MENU.
6.
Follow the steps presented on the MDS and DRBIII which will allow the DRBIII to obtain the current part number of the controller.
7.
The MDS will display the part number of the controller on the vehicle and the appropriate replacement part number, then press NEXT MENU to
begin programming.
If the controller on the vehicle has already been updated or programmed, a NO UPDATES AVAILABLE message will be displayed. Check the part
number of the controller on the vehicle and compare it to the part number displayed. If the part number on the controller is correct, and the update has
been verified, proceed to step 9.
8.
The MDS and DRBIII 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.*
