Chrysler/Dodge Pattern 1 - pre-CAN

Topics in this section include:

  1. Drive Cycle Pattern 1
  2. Drive Cycle Procedures
  3. Drive Cycle Video

1. This pattern should be used for most 1996-2007 Chrysler and Dodge vehicles. The differences within this pattern are the methods of EVAP Leak Detection.  The system will test after a cold soak start if it has a leak detection pump (LDP). If it has a Natural Vacuum Leak Detection (NVLD) or EVAP System Integrity Module (ESIM) switch, it will test after the end is shut off.

2. The procedure listed pertains to the pattern shown above. NOTE: These steps can run out of order depending on the vehicle speed and engine load.

3. The video was captured while performing the drive cycle on a dynamometer.  The factory scan tool was used to display the inner workings of the Engine Control Module (ECM).  Note: The enable criteria are shown on the scan tool at the top of each screen.  The readiness flag status for this drive cycle is displayed in the middle of the screen.