Operating Condition

• Enter the maintenance mode, then start the engine. Hold the engine speed [Engine Speed] at 3000 RPM without load (in P or N) until the radiator fan comes on.
• Drive at a steady speed between 15 - 75 mph (25 - 120 km/h) for at least 15 minutes, and watch the long term fuel trim. If the long term fuel trim stays at about 1, the vehicle is OK or it is a very minor problem. If a significant fault is still present, the long term fuel trim will move up or down while driving.

• When freeze data is stored, drive the vehicle under those conditions instead of Driving Pattern step 2.
• After clearing the DTC by disconnecting the 12 volt battery or using the scan tool, drive at steady speed between 15 - 55 mph (25 - 88 km/h) for at least 40 minutes to allow time for long term fuel trim to recover.
• Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

[ ]: HDS Parameter