Tuesday, November 6, 2012
2003 – 2008 Toyota Corolla and Toyota Matrix 1ZZ–FE Engine
This toyota technical service bulletin is provided for 2003 – 2008 model year Corolla and Matrix vehicles equipped with the 1ZZ–FE engine. Following a cold soak in subfreezing ambient temperatures, some 2003 – 2008 model year Corolla and Matrix vehicles equipped with a 1ZZ–FE engine may exhibit a M.I.L. “ON” with one or more of the following Diagnostic Trouble Codes (DTCs) as the result of a vacuum leak at the intake manifold.
- S P0171 – System Too Lean (Bank 1)
- S P0300 – Random Multiple Cylinder Misfire Detected
- S P030# – Cylinder (1–4) Misfire Detected
- S P0133 – Oxygen Sensor Slow Response (Bank 1 Sensor 1)
Please use the following procedure to repair the 2003 – 2008 toyota corolla and matrix vehicle.
Inspection Procedure :
1. Monitor the following Data List parameter: Short FT #1 (Short Term Fuel Trim for Bank 1).
Using TIS techstream, select: Connect to Vehicle/Engine and ECT/Data List/Short FT #1.
2. Following conventional diagnostic procedure, confirm if there is a leak where the intake manifold and cylinder head meet between each intake runner.
