Mode 2 Procedure

NOTE: For the Mode 2 driving procedure, it is best to use a stopwatch for accurate timing of the drive cycle.

CAUTION: Strict observance of posted speed limits and attention to driving conditions are mandatory when proceeding through the following drive cycle.

NOTE: Observing the diagnostic monitors while performing this mode will verify when the mode is complete, as the monitors will clear. If Mode 2 is performed properly and the monitors do not clear, either Mode 1 was not successfully completed or a concern exists with the vehicle.

1. Key OFF.
2. Connect NGS to the OBD II DLC.
3. Access the VSS PID.
4. Ensure that all accessories are off, including A/C.
5. Start the engine and stopwatch.
6. Idle the engine for 1 minute, or drive the vehicle at any legal speed for approximately 1 minute (no particular driving pattern is necessary).
7. For automatic transmission:
- with transmission in DRIVE, accelerate the vehicle to approximately 88 kph ± 13 kph (55 mph ± 8 mph) and maintain that speed for 1 minute.
- For manual transmission: with transmission in 5th gear, accelerate the vehicle to approximately 87 kph ± 8 kph (54 mph ± 5 mph) and maintain that speed for 1 minute.
8. After the stopwatch has passed the 1 minute mark, slow the vehicle to a stop and let the vehicle idle in PARK (A/T) or NEUTRAL (M/T) for more than 1 minute. At this point the oxygen sensor heater system monitor and the EGR system monitor should be cleared.
9. Key OFF.