LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2008 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0300 Random/Multiple Cylinder Misfire Detected; DTC P0301 Cylinder 1 Misfire Detected; DTC P0302 Cylinder 2 Misfire Detected; DTC P0303 Cylinder 3 Misfire Detected; DTC P0304 Cylinder 4 Misfire Detected; DTC P0305 Cylinder 5 Misfire Detected; DTC P0306 Cylinder 6 Misfire Detected; DTC P0307 Cylinder 7 Misfire Detected; DTC P0308 Cylinder 8 Misfire Detected >> Confirmation Driving Pattern

Confirmation Driving Pattern

  1. Connect the Techstream to the DLC3.
  2. Record the DTC and freeze frame data.
  3. Set check mode on the Techstream (See CHECK MODE PROCEDURE  ).
  4. Read the value on the misfire counter for each cylinder when idling. If the value is displayed on the misfire counter, skip the following procedure of confirmation driving.
  5. Drive the vehicle several times while using the Data List's Misfire RPM and Misfire Load menu items to keep track of the vehicle's engine speed, load and its surrounding range.

    If you have no Techstream, turn the ignition switch OFF after the symptom is simulated once. Then repeat the simulation process.

    HINT:

    In order to force output of the DTC, it is necessary to drive with Misfire RPM and Misfire Load selected in the Data List for the period of time in the chart below. Do not turn the ignition switch OFF. Turning the ignition switch OFF switches the diagnosis system from check mode to normal mode and all DTCs, freeze frame data and other data are erased.

    ENGINE RPM REFERENCE

    Engine RPM Time
    Idling 3 5 minutes or more
    1000 rpm 3 minutes or more
    2000 rpm 1.5 minutes or more
    3000 rpm 1 minute or more
  6. Check if a misfire occurs by monitoring DTC output and the freeze frame data. Then, record the DTCs, freeze frame data and misfire counter data.
  7. Turn the ignition switch OFF and wait for at least 5 seconds.
scientia non olet · About LEMON Manuals