Operation CHARM: Car repair manuals for everyone.

Vehicle Preparation

NOTE: Vehicles equipped with a Power Take Off (PTO) must have this system disengaged before proceeding. Verify by viewing the PTO Parameter Identification (PID) for OFF status.

1. Attach a scan tool and access the ECT, FLI, IAT PIDs.
Verify the IAT PID is between 10-38°C (50-100°F).
Verify the FLI PID is between 15% and 85% (only available on EVAP Running Loss systems).
2. Warm the vehicle until the ECT PID reaches a minimum of 54°C (130°F).
3. Clear all DTCs with the scan tool by pressing CLEAR with the key ON engine OFF. P1000 will remain. Leave the key in the ON position, and start the vehicle.
4. Access the On-Board System Readiness Menu on the scan tool to view the status of the OBD II monitors.
5. Proceed with the OBD II Drive Cycle or selected monitor repair verification drive cycle. Once started, the engine must not be turned OFF.