Engine Control Module - MIL ON/DTC's Set
ENGINEEG001-01
March 16, 2001
Title:
M.I.L. "ON" P0300-P0308
Models:
'01 GS 430 & LS 430
Introduction
After starting the engine under certain cold operation conditions, some 2001 model year GS 430 and LS 430 vehicles may exhibit M.I.L. "ON" with DTC numbers P0300 through P0308 (random misfire and single cylinder misfire). The Engine Control Module (ECM) calibration files were revised to correct this condition.
Applicable Vehicles
^ 2001 model year GS 430 and LS 430 vehicles.
Production Change Information
ECM Calibration Number Information
Parts Information
PREVIOUS PART NUMBER CURRENT PART NUMBER PART NAME
N/A 00451-00001-LBL Authorized Modifications Label
NOTE:
Authorized Modifications Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through the TDN Dealer Support Materials System, or by calling the MDC at 1-800-622-2033.
Warranty Information
Applicable Warranty *:
This repair is covered under the Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Repair Procedure
1. Connect the Diagnostic Tester to the DLC3 connector.
2. Retrieve Freeze Frame data for any one of the recorded DICs.
3. Verify that Freeze Frame data was recorded shortly after engine start at low temperature by confirming "COOLANT TEMP" reads less than 120°F (49°C) and "ENG RUN TIME" shows less than 120 seconds.
4. Follow the procedures outlined in TSIB No. SS001-01, "ECU Flash Reprogramming Process," and flash reprogram the ECM with new "Main" and "Sub" calibration file updates. If Freeze Frame data recorded with the engine at operating temperature or with "ENG RUN TIME" above 120 seconds, diagnose DTCs using the vehicle Repair Manual before reprogramming the ECM.
5. Enter the required information on the Authorized Modifications Label and affix it to the vehicle at the location(s) shown. The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.