Engine Controls - MIL ON/DTC P0420 Set
Classification:EC00-025b
Reference:
ITB00-054b
Date:
June 7, 2004
2000-2001 I30 MIL "ON" WITH DTC P0420 STORED - THREE WAY CATALYST FUNCTION
IMPORTANT:
THIS BULLETIN HAS BEEN REVISED.
^ The Service Information and Service Procedure sections of this bulletin were revised.
^ Please use this bulletin ITB00-054b for complete information.
^ Discard all previously distributed copies of ITB00-054a.
APPLIED VEHICLES:
2000-2001 I30 (CA33)
IF YOU CONFIRM:
An applied vehicle has the following symptoms:
^ MIL ON with DTC P0420 stored
AND
^ Vehicle runs OK and does NOT have a misfire or driveability incident
ACTIONS:
1. Confirm this bulletin applies to the vehicle you're working on.
Refer to the Repair Flow Chart for details.
2. Compare the current ECM part number to Chart A.
^ If your ECM part number is listed in Chart A reprogram the ECM to the latest ECM data. See ECM REPROGRAMMING for details. Do NOT replace any parts in this case.
^ If your ECM part number is NOT listed in Chart A you do not have to reprogram the ECM. But you will have to replace the Front Tube Assembly and the Front H02S1 - Bi-Oxygen Sensor. See Parts Replacement for details.
IMPORTANT:
The purpose of "ACTIONS" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Repair Flow Chart and Service Procedure as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
CLAIMS INFORMATION
SERVICE PROCEDURE
Check the Current ECM Part Number
With CONSULT-II ON print the Freeze Frame data as shown.
^ The Freeze Frame data that you've printed contains the ECM Part Number (P/N).
^ Figure 1 is an example of the F.F. Data printout.
^ Once you know the current ECM part number go to the next step: "Compare the Current ECM Part Number to Chart A" (below).
Compare the Current ECM Part Number to Chart A:
Compare the vehicle's current ECM P/N to those shown under Current ECM P/N in Chart A shown.
A. If your vehicle's ECM P/N matches a P/N in the chart above:
^ Perform ECM Reprogramming.
B. If your vehicle's ECM P/N does not match a P/N in the chart above:
^ ECM Reprogramming is not necessary.
^ Replace the Front Tube Assembly and the Front H02S1-B1 Oxygen Sensor. See Parts Replacement for an illustration and more details.
ECM REPROGRAMMING Vehicle ECM Reprogramming Overview
^ There are four basic steps:
1. Download reprogramming data (transfer it) from ASIST into CONSULT-II.
2. Preparation steps before reprogramming the vehicle ECM.
3. Reprogram the vehicle ECM.
4. Wrap-up after reprogramming is finished.
^ For those familiar with ECM Reprogramming please review the following steps and use them as a Quick Reference for ECM reprogramming.
Step One: Download (Transfer) Data From ASIST into CONSULT-II
1. Select vehicle model and model year (Example: I30 2001).
2. Select the correct reprogramming data:
a. Locate the specific Model Configuration (Example: VQ30 4AIT ASCD TCS).
NOTE:
Model Configuration may include items such as engine type transmission type and vehicle options such as ASCD TCS ABS etc.
b. Select (click on) the "To" number. (Write the "To" number on the repair order.)
NOTE:
The "To" number will read: 23710-XXXXX.
3. Click on the Add button.
^ This will add the selected data to the File(s) Selected list.
4. Click on "Continue" and follow directions to perform "data transfer" (download) from ASIST into CONSULT-II.
Step Two: Preparation for Reprogramming ECM
CAUTION:
DO NOT connect the CONSULT-II AC power supply for items 1 and 2.
1. Press [SUB MODE] (see Figure 3) then:
a. From the listed items find and select [BATTERY CHARGE].
2. Check the CONSULT-II's Charger Input reading (see Figure 4).
NOTE:
^ "Battery Voltage" is the voltage level of CONSULT-II's battery.
^ "Charger Input" is the voltage level of the vehicle's battery. (It must be above 12 volts.)
CAUTION:
If the Charger Input is below 12 volts connect a battery charger to the vehicles battery and re-check the Charger Input. If still not 12V then:
The general procedure includes a list of items to check when Charger Input voltage is below 12V.
Step Three: Reprogram the Vehicle ECM
Step Four: "Wrap-up" After Reprogramming is Finished
1. Turn the ignition switch "OFF" and turn CONSULT-II "OFF".
2. Wait more than 10 seconds then;
a. Turn the ignition switch "ON" for 2 seconds, then
b. Turn the ignition switch "OFF" again for 10 seconds (see Figure 5). This will reset ECM "self learned Data.
3. Start the engine and check the idle speed.
^ If idle speed is too low perform IAVL (Idle Air Volume Learning). See the appropriate Service Manual (ESM) for this procedure.
NOTE:
If the engine will not idle, hold the engine RPM at about 2000, then slowly bring it down to an idle. IAVL can now be performed.
4. Confirm the engine is operating normally.
5. Make sure the Check Engine Light (MIL) is not "ON".
^ If necessary use CONSULT-II and the Diagnostic (red/white) Card to erase any DTC's that may have stored during the reprogramming procedure.
Parts Replacement (if needed)
Replace the Front Tube Assembly and the Front H02S1-B1 Oxygen Sensor (see Figures 6 and 7). Refer to the FE section in the applicable ESM for the replacement procedures.
Disclaimer