Evaporative Emission Repair Verification Drive Cycle

WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The following procedure is designed to execute and complete EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE and to clear DTC P1000, inspection and maintenance (I/M) readiness code. When ambient air temperature is less than 40°F (4.4°C) or more than 100°F (37.8°C), or altitude is above 8000 feet, EVAP monitor will not run. If DTC P1000 must be cleared in these conditions, PCM must detect them once (twice on some applications) before EVAP monitor can be by-passed and DTC P1000 cleared. EVAP by-passing procedure is described in the following drive cycle.

Drive Cycle Recommendations

1) Most OBD-II monitors will complete more readily using a steady foot driving style during cruise or acceleration modes. Operating throttle in a smooth fashion will minimize time necessary for monitor completion.
2) Fuel tank level should be between 1/2 and 3/4 full, with 3/4 full being most desirable.
3) Evaporative monitor can only operate during first 30 minutes of engine operation. When executing the procedure for this monitor, stay in part throttle mode and drive in a smooth fashion to minimize fuel slosh.

NOTE: For best results, follow each of the following steps as accurately as possible.

Drive Cycle Preparation

NOTE: This step by-passes engine soak timer and resets OBD-II monitor status.

4) Install scan tool to Data Link Connector (DLC). Turn ignition on. Cycle ignition off, then on. Using scan tool, select appropriate vehicle and engine qualifier. Clear all DTCs and perform PCM RESET PROCEDURE under CLEARING CODES under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - VILLAGER article.
5) Using scan tool, access and monitor ECT, EVAPDC, FLI (if available), and TP MODE PIDs from PID/DATA MONITOR & RECORD menu, press "Trigger" to select each PID, then press "Start".
6) Start engine and allow to idle. DO NOT allow ignition to turn off.

Preparation For Monitor Entry

WARNING: Strict observance of posted speed limits and attention to driving conditions are mandatory when proceeding through drive cycle.

NOTE: This step allows engine warm-up and provides Intake Air Temperature (IAT) input to PCM.

7) Allow engine to idle for 15 seconds. Drive vehicle at 40 MPH until ECT PID is at least 170°F (76.7°C).
8) If IAT PID is more than 40°F (4.4°C) and less than 100°F (37.8°C), go to next step. If not, continue with following steps, but note that step 13) EVAP Monitor By-pass portion of drive cycle will be required to by-pass EVAP monitor and clear DTC P1000.

NOTE: This step executes Heated Oxygen Sensor (HO2S) monitor.

9) Drive vehicle at 40 MPH for 60 seconds.

NOTE: This step executes EVAP monitor if IAT is more than 40°F (4.4°C) and less than 100°F (37.8°C).

NOTE: To initiate monitor, TP MODE should equal PT, EVAPDC must be more than 75 percent, and FLI must be 15-85 percent.

NOTE: Avoid sharp turns and hills.

10) Drive vehicle at 45-65 MPH for 10 minutes.

NOTE: This step executes ISC portion of Secondary Air/CCM.

11) Bring vehicle to a stop. Allow engine to idle with transmission in Drive (A/T) or Neutral (M/T) for 2 minutes.

Pending DTC & EVAP Monitor By-Pass Check

NOTE: This determines if a pending DTC is preventing the clearing of DTC P1000.

NOTE: If EVAP monitor is not complete and IAT was less than 40°F (4.4°C) or more than 100°F (37.8°C) temperature range in step 8) , or altitude is above 8000 feet, step 13) EVAP Monitor By-Pass must be performed.

12) Using scan tool, check for pending DTCs. Service pending DTCs as necessary. Rerun any incomplete monitor.

EVAP Monitor By-Pass

NOTE: This step allows by-pass counter to increment to 2. DO NOT repeat step 4) .

13) Park vehicle for a minimum of 8 hours. Repeat steps 5)- 12) .