Service Procedure
Reprogram the Cab Control Node (CCN) Module and Front ControlModule (FCM)
The DealerCONNECT System, DRBIII(R) (Diagnostic Readout Box scan tool), CH7000A flash cable and CH7035B data cable are required to perform this repair. Do not attempt to perform the flash procedure using an outdated CH7000/CH7001 flash cable.
NOTE:
Whenever a controller is programmed, the software in the DRBIII must be programmed with the latest revision level available.
1. Using a CH7025 cable, connect the DRBIII to the external power supply.
2. Before beginning the reprogramming procedure, remove any old flash reprogramming files from the DRBIII memory. To clear the memory:
a. Start at the "MAIN MENU" screen and simultaneously press the "More" and "Yes" keys.
b. A screen will appear requesting a "Cold Boot".
c. Follow the on screen instructions by selecting the "F4" key.
d. When the DRBIII reboots to the MAIN MENU, proceed to Step #3.
3. Using a CH7035B cable, connect the DRBIII to TechCONNECT.
4. Open "TechTOOLS" and verify that the "DRBIII Status: Connected" message is in the upper right corner of the TechTOOLS screen.
5. In the criteria box on the TechCONNECT screen, enter the last 9 digits of the Vehicle Identification Number (VIN), or use the Y.M.E. session function.
6. Click on the "Show Updates" button at the bottom of the TechCONNECT screen.
7. For 2003 models there will be three flash files available for this recall. Download all three flash files by depressing the control key on the TechCONNECT keyboard and then selecting the three flashes listed below.
56049681AC / 56051036AF flashes are for the FCM.
MIC02DRV38 flash is for the CCN.
NOTE:
Only two of the three flash files downloaded to the DRBIII will be used. The DRBIII will automatically select the correct flash for the FCM based on the FCM part number in the vehicle.
8. For 2004 2005 models there will be two flashes available for this recall. Depress the control key on the TechCONNECT keyboard and then select the two flashes listed below.
56051036AF flash is for the FCM.
MICDRV0052 flash is for the CCN.
9. Click on the "Download/Update" button on the bottom of the TechCONNECT screen.
10. Monitor the "Flash Download/Update Progress" window on the TechCONNECT and follow the instructions on TechCONNECT. When the flash process is complete, proceed to Step 11.
11. Disconnect the DRBIII from TechCONNECT and the external power supply.
12. Inspect the radio face plate. The radio sales code is printed on the face of the radio (Figure 1). If the vehicle is equipped with an "RAZ" radio, it must be removed from the instrument panel and completely disconnected to eliminate the possibility of any electronic communication between the radio and the instrument cluster during the flash procedure.
13. Vehicles equipped with a "RAZ" radio: remove the ABS module fuse (# 35) from the Power Distribution Center (PDC) (Refer to the bottom of the PDC cover for fuse location). This will prevent any communication between the ABS module and the instrument cluster during the flash procedure.
CAUTION:
The flash process will fail if you are attempting to flash a "RAZ" radio equipped vehicle without disconnecting the radio and removing the ABS module fuse as outlined in Steps 12 and 13.
14. Install a battery charger and verify that the charging rate provides approximately 13.5 volts. The charger needs to be charging the battery for the entire flash session.
15. Connect the DRBIII to the vehicle.
16. Turn the ignition key to the "RUN" position.
17. Download the flashes from the DRBIII to the vehicle.
NOTE:
On 2003 model vehicles, the DRBIII will select the correct flash for the FCM based on the FCM part number in the vehicle. Using the DRBIII:
a. Select "Vehicle Flash".
b. Follow the directions on the DRBIII screen. When the flash process is complete, proceed to Step 18.
18. If removed, install fuse # 35 into the PCD.
19. If the radio was removed, reconnect all radio connections, install the radio and radio bezel.
20. Due to the programming procedure, a Diagnostic Trouble Code (DTC) may be set in other modules (PCM, TCM, BCM, SKIM, etc.) within the vehicle, if so equipped. Some DTC's may cause the MIL to illuminate. Check all modules using "Module Scan" record the DTC's, and erase these DTC's prior to returning the vehicle to the customer. Erase any DTC's in the PCM only after all other modules have had their DTC's erased.
21. Disconnect the DRBIII scan tool from the vehicle.
22. Turn off the battery charger and disconnect it from the vehicle.