Canada - Engine Control - MIL ON P0300-P0308

Bulletin
0439

Issue Date
2001-04-06

Market
Canada

Reference
EE-01-001

Model
GS430, LS430

Year Range
2001

Component
EE

Subject:
M.I.L. "ON" P0300 - PO308

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 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 GS430 and LS430 vehicles.







PRODUCTION CHANGE INFORMATION:







ECM CALIBRATION NUMBER INFORMATION:







PART NUMBER INFORMATION:


REPAIR PROCEDURE:

1. Connect the Diagnostic Tester to the DLC3 connector.
2. Retrieve Freeze Frame data for any one of the recorded DTCs.
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 TSB No. GI-01-014, 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 your PDC, P/N 00451-00001-25.







REPAIR TIME:

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.