Mercury 1996 Grand Marquis Manual page 291

varies with individual driving patterns. To
complete this requirement in the minimum
amount of time, refer to the OBD II Drive Cycle
defined below. If the vehicle owner cannot or
does not want to do the additional driving
required by law, a service center can perform
this drive cycle as it would any other type of
repair work.
OBD II Drive Cycle
The following steps must be run in the order
shown. If steps 2 thru 9 are interrupted, repeat
the preceding step. Any safe driving mode is
acceptable between steps.
Always drive vehicle in safe manner according
to traffic conditions and obey all traffic laws.
The engine must be warmed up and at
operating temperature before proceeding with
the drive modes of the following OBD II Drive
Cycle.
1. Start the engine. Drive or idle (in neutral)
the vehicle for 4 minutes.
2. Idle the vehicle in drive for 40 seconds.
3. Accelerate the vehicle to 45 mph (72 km/h)
at 1/4 to 1/2 throttle for 10 seconds.
4. Drive the vehicle with a steady throttle at
45 mph (72 km/h) for 30 seconds.
5. Idle the vehicle in drive for 40 seconds.
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