Chrysler Drive Cycle - ODB2 Readiness Monitors - A Star Smog

In order to determine if your Jeep, Dodge, or Chrysler vehicle is ready for an emissions test, you can either use an OBDII scanner or, if one is not available, check the MIL (check engine light). At A Star Smog, we will use an OBDII scanner to conduct a smog precheck.

1. Turn on the ignition to ON, but do not start the engine.
2. The check engine light f the (MIL) will turn on for 15 seconds.
3. After 15 seconds, one of two things will happen.
   1. If the MIL flashes for 10 seconds, and then returns to being fully illuminated, the OBDII sensors are NOT READY and you need to complete the drive cycle.
   2. If the MIL does not flash and remains fully lit, you are ready to go to the smog station.

Jeep, Chrysler, and Dodge Drive Cycle

Note: Original 1996 Chrysler vehicles do not maintain OBD2 readiness after engine shutdown, however this is a fix that is available at a dealer.

For all drive cycles, make sure the check engine light (MIL) is off.

All Monitor Drive Trace Idle for 5 minutes Warm engine up for five minutes Smoothly acceerate and maintain a speed between 40 to 60 mph for 8 minutes. Stop and idle for 3 minutes. Smoothly accelerate and maintain a speed above 20 mph for 2 minutes. Turn key off, leave off for ten minutes

Catalyst Monitor Drive Trace Idle for 5 minutes Smoothly accelerate and maintain a speed between 30 to 45 mph for 2 minutes.

EGR System Monitor Drive Trace – Vacuum controlled Idle for 5 minutes Smoothly accelerate and maintain a speed between 40 to 60 mph for 2 minutes.

EGR System Monitor Drive Trace – Electronic Idle for 5 minutes Smoothly accelerate and maintain a speed between 40 to 60 mph for 2 minutes. Idle for 3 minutes

Evaporative System Monitor Drive Trace Trace 1: Standard Type – Make sure that your fuel level is between 50% and 85% full. Idle for 5 minutes Smoothly accelerate and maintain a speed between 30 to 45 mph for 2 minutes.

Trace 2: Leak Detection Pump From 6-8 hours of the vehicle being off (cold soak), idle for 5 minutes Drive in city traffic naturally with stops and acceleration for 5 minutes. Stop. Idle vehicle for 4 minutes.

O2 Sensor Monitor Drive Trace Idle for 5 minutes Smoothly accelerate and maintain a speed above 25 mph for 2 minutes. Stop and idle for 30 seconds. Smoothly accelerate and maintain a speed between 30 to 40 mph Repeat idle and acceleration to 30-40 mph five times.

O2 Sensor Heater Monitor Drive Trace Idle for 5 minutes, then shut the engine and leave the vehicle off for 10 minutes.

Source: https://img.neons.org/AGN/chrysler_drive_cycle.pdf