Confirmation Driving Pattern
WARNING: This page is about a different car, the 2003 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the hand-held tester to the DLC3. Switch the hand-held tester from normal mode to check mode. Start the engine and warm it up for 2 minutes or more with all accessory switches OFF. Drive the vehicle at 38-75 MPH and engine speed at 1600-3200 RPM for 3-5 minutes. If a malfunction exists, the MIL will light. If the conditions in this test are not strictly followed, detection of the malfunction will impossible.
- If you do not have a hand-held tester, turn the ignition switch OFF after starting the engine and warm it up for 2 minutes or more with all accessory switches OFF. Drive the vehicle at 60-120 km/h (38-75 MPH) and engine speed at 1600-3200 RPM for 3-5 minutes, then repeat. See Fig 1. If DTC P0134 is displayed, check bank 1 sensor 1 circuit. If DTC P0154 is displayed, check bank 2 sensor 1 circuit. Bank 1 refers to the bank that includes cylinder No. 1. Bank 2 refers to the bank that includes cylinder No. 2. Sensor 1 refers to the sensor closest to the engine body. Read freeze frame data using hand-held tester or OBD-II scan tool. Because freeze frame records the engine conditions when the malfunction is detected, when troubleshooting, it is useful to determine whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel ratio lean or rich, at the time of the malfunction.