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Chrysler OBD2 drive cycle



If you have a 96+ 2GNT and are required to pass a state emissions test, you'll fail if you've recently reset the ECU and the OBD2 emissions monitors have not run. These monitors verify the efficacy of the catalytic_converter, EGR system, EVAP system, and O2 sensors.

Global monitor drive cycle



Requirements:

  • CEL must be off
  • Cold start (Note: cold start temperature is undefined)

Driving Procedure

  1. Warm engine up for five minutes (must reach closed loop)
  2. Drive (with steady throttle) at a speed between 40 and 60 mph for 8 minutes.
  3. Stop and idle for 3 minutes.
  4. Drive (with steady throttle) at a speed above 20 mph for 2 minutes.
  5. Turn key off, leave off for ten minutes (to run O2 sensor heater monitor).

In the event this does not cause all the emissions monitors to run, you can try the conditions for individual monitors as well.

Catalytic converter monitor


Requirements:

  • MIL must be off.
  • No DTCs present.
  • Fuel level is between 15% and 85% full.
  • ECT above 70o F.
  • Engine must have run at least 90 seconds
  • Engine between 1,350 & 1,900 rpm.

Driving Procedure

  1. Idle vehicle for five minutes (to reach closed loop operation).
  2. Drive with a steady vehicle speed between 30 and 45 mph for 2 minutes.


EGR monitor


Requirements:

  • CEL must be off.

Driving Procedure

  1. Idle vehicle for five minutes (to reach closed loop operation).
  2. Drive with a steady vehicle speed between 40 & 60 mph for 8 minutes.


EVAP system monitor


Requirements:

  • CEL must be off.
  • No Evaporative DTCs present.
  • Fuel level is between 30 & 85 % full.

Driving Procedure

  1. Allow vehicle to cool completely, start and idle vehicle for 4 minutes.
  2. Drive in-town (stop and go) for 5 minutes, using smooth accelerations and
    decelerations.
  3. Stop and idle vehicle for 4 minutes.


O2 Sensor monitor


Requirements:

  • CEL must be off.

Driving Procedure

  1. Idle vehicle for five minutes (to reach closed loop operation).
  2. Drive with a steady vehicle speed above 25 mph for 2 minutes.
  3. Stop and idle for 30 seconds.
  4. Smoothly accelerate to a speed between 30 and 40 mph.
  5. Repeat steps 3 & 4 five (5) times.


O2 Sensor heater monitor


Requirements:

  • CEL must be off.

Driving Procedure

  1. Idle vehicle for five minutes (to reach closed loop operation).
  2. Shut engine off and leave vehicle off for ten minutes.



Document statistics: Last modified on 2012-08-30 10:52:28 by DarkOne


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