Engine Controls - MIL ON/DTC's P0420/P0430
NUMBER: 18-046-07GROUP: Vehicle Performance
DATE: November 06, 2007
FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE FLASH FILES AND REPROGRAMMING INSTRUCTIONS WILL BE AVAILABLE ON ITIL/ISIS DVD DECEMBER, 2007.
SUBJECT:
Flash: DTC P0420 / P0430 - Catalyst Efficiency
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2005 - 2006 (TJ) Wrangler (International)
NOTE:
This bulletin applies to Wrangler vehicles built for the International Market and equipped with a 4.0L engine (sales code ERH).
SYMPTOM/CONDITION:
The vehicle operator may experience a Malfunction Indicator Lamp (MIL) illumination on the instrument cluster. Investigation may reveal that the MIL is due to one of the following Diagnostic Trouble Codes (DTC):
^ P0420 - Catalyst 1/1 Efficiency - Bank 1
^ P0430 - Catalyst 2/1 Efficiency - Bank 2
This PCM software change will also improve the test robustness for DTC's P0572 and P0573 when the driver is performing "stuck in snow" or "stuck in sand" (two foot rocking back and forth) maneuvers.
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If DTCs are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes or experiences the Symptom/Condition, perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS / EQUIPMENT REQUIRED:
NOTE:
An updated J1962 cable has been released. This cable has a red colored connector at the DRBIII(R) connection. Use this cable whenever a flash is being performed.
REPAIR PROCEDURE FOR DOMESTIC VEHICLES USING DRBIII(R) AND DOWNLOADING THE FLASH FILE FROM DealerCONNECT:
NOTE:
Whenever a module is reprogrammed, the software in the DRBIII(R); must be programmed with the latest revision level available. Current software version is 64.1.
NOTE:
If this flash process is interrupted/aborted, the flash process should be restarted and then follow the directions on the DRBIII(R).
1. Before beginning the flash procedure, remove any old flash files from the DRBIII(R) memory. To clear the memory from the MAIN MENU:
a. 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(R) reboots to the MAIN MENU, proceed to Step # 2
2. With the ignition switch in the "RUN" position, determine the original part number of the PCM currently in the vehicle. Using the DRBIII(R) select:
a. "DRBIII(R) Standalone".
b. "1998 - 2007 Diagnostics".
c. "All (Except Below)".
d. "Engine".
e. "Module Display".
f. Record the "PCM part # " on the repair order for later reference.
3. Connect the DRBIII(R) to TechCONNECT. Open TechTOOLS and verify that the "DRBIII(R) Status: Connected" message is in the upper right corner of the TechTOOLS screen.
4. Enter the "PCM part # "recorded in Step # 2 in the "Parts Criteria" area and select "Show Updates". TechTOOLS will populate the appropriate flash file.
5. Select the flash file.
6. Select the "DRBIII" radio button which is next to the "Download/Update" button.
7. Select the "Download/Update button.
8. 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 # 9.
9. Disconnect the DRBIII(R) from TechCONNECT.
10. Open the hood, install a battery charger and verify that the charging rate provides approximately 13.5 volts.
11. With ignition switch in the "OFF" position, disconnect the electrical harness connector to the Anti-Lock Brake System (ABS) module. Turn the ignition switch to the "RUN position.
12. Connect the DRBIII(R) to the vehicle.
13. Download the flash file from the DRBIII(R) to the vehicle. Using the DRBIII(R) select:
a. "Vehicle Flash".
b. Follow the directions on the DRBIII(R) screen. When the flash process is complete, proceed to the next step.
14. With ignition switch in the "OFF" position, connect the electrical harness connector to the Anti-Lock Brake System (ABS) module. Turn the ignition switch to the "RUN position. Clear all DTC's.
15. Reset the "Pinion Factor" as necessary.
16. Perform the transmission Quick Learn Procedure as necessary.
NOTE:
Due to the PCM programming procedure, a DTC may be set in other modules (TCM, BCM, MIC, 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.
NOTE:
The following step is required by law.
17. Type the necessary information on the "Authorized Modification Label p/n 04275086AB and attach near the VECI label (Fig. 1).
REPAIR PROCEDURE FOR EXPORT VEHICLES USING DRBIII(R) AND DOWNLOADING THE FLASH FILE FROM DealerCONNECT:
NOTE:
Whenever a controller is programmed, the software in the DRBIII(R); must be programmed with the latest revision level available. Current software version is 64.1.
NOTE:
If this flash process is interrupted/aborted, the flash should be restarted and then follow the directions on the DRBIII(R).
1. Before beginning the reprogramming procedure, remove any old flash reprogramming files from the DRBIII(R) memory. To clear the memory from the MAIN MENU:
a. 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(R) reboots to the MAIN MENU, proceed to Step # 2
2. With the ignition switch in the "RUN" position, determine the original part number of the PCM currently in the vehicle. Using the DRBIII(R) select:
a. "DRBIII(R) Standalone"
b. "1998 - 2007 Diagnostics"
c. "All (Except Below)"
d. "Engine"
e. "Module Display"
f. Record the "PCM part # " on the repair order for later reference.
g. Disconnect the DRBIII(R) from the vehicle.
h. Connect the DRBIII(R) to the ITIL/ISIS PC and NULL modem cable.
3. Log into DealerCONNECT. Proceed to: Service / Repair - Flash.
4. Select vehicle Year, Model, and Engine (YME). Then select the "Submit" button at the bottom of the screen.
5. Compare the calibration part number available for flash reprogramming to the module part number recorded earlier. Select the new calibration if applicable.
6. Download the new calibration to the PC.
7. Using the "DRBIII - WINFLASH II application on the PC, download the flash calibration file to the DRBIII(R) from the PC.
8. Disconnect the DRBIII(R) from the PC and NULL modem cable.
9. With ignition switch in the "OFF" position, disconnect the electrical harness connector to the Anti-Lock Brake System (ABS) module. Turn the ignition switch to the "RUN" position.
10. Open the hood, install a battery charger and verify that charging rate provides approximately 13.5 volts.
11. Connect the DRBIII(R) to the vehicle.
12. Turn the ignition switch to the "Run" position (engine not running).
13. Reprogram the PCM by downloading the flash from the DRBIII(R) to the vehicle. Using the DRBIII(R) select:
a. "Vehicle Flash"
b. Follow the directions on the DRBIII(R) screen. When the flash process is complete, proceed to the next step.
14. With ignition switch in the "OFF" position, connect the electrical harness connector to the Anti-Lock Brake System (ABS) module. Turn the ignition switch to the "RUN" position. Clear all DTC's.
15. Reset the "Pinion Factor if necessary.
16. Perform the transmission Quick Learn Procedure if necessary.
17. Update the Sentry Key Immobilizer Module (SKIM) or Sentry Key Remote Entry Module (SKREEM), Secret Key data if necessary.
NOTE:
Due to the PCM programming procedure, a DTC may be set in other modules (TCM, BCM, MIC, 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.
NOTE:
The following step is required by law when reprogramming a PCM and/or TCM.
18. Type the necessary information on the "Authorized Software Update label, p/n 04275086AB and attach near the VECI label (Fig. 1).
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.