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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Engine Control System Self Diagnostics - 4-Cylinder) >> Diagnostic Tests >> DTC P0300 &/Or DTC P0301, DTC P0302, DTC P0303 Or DTC P0304 >> Test Drive Confirmation

Test Drive Confirmation

WARNING: This page is about a different car, the 2003 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect Toyota hand-held tester or scan tool to Data Link Connector (DLC3) at driver's side of instrument panel. See Figure. Check for any DTCs and read FREEZE FRAME data. Record DTCs and freeze frame data. If using hand-held tester, switch hand-held tester to CHECK mode.
  2. Drive vehicle several times with engine speed, load and its surrounding range shown with ENGINE SPD, CALC LOAD in freeze frame data or MISFIRE RPM and MISFIRE LOAD in the data list on hand-held tester or scan tool.
  3. Allow engine to idle for at least 3 1/2 minutes and then drive vehicle at specified engine speeds for specified amount of time. See DRIVING PATTERN . If using OBD II scan tool, turn ignition off after symptom is simulated the first time (1 trip detection logic), then repeat test drive again trying to get a misfire again and set DTC (2 trip detection logic). If using hand-held tester or scan tool and a misfire is detected, a DTC will set and misfire will be indicated in freeze frame data. Be careful not to turn ignition off, as that switches the diagnostic system from check (test) mode to normal mode. All DTCs, freeze frame data, etc. would be erased. Check for misfire DTCs by monitoring DTC and freeze frame data. Record any data. Turn ignition off and wait a minimum of 5 seconds.
    DRIVING PATTERN

    Engine RPM Specified Time
    1000 3 Minutes Or More
    2000 1 1/2 Minutes Or More
    3000 1 Minute Or More
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