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Discussion Starter #1 (Edited)
1996-99 GASOLINE MODELS

Introduction

The purpose of the OBD-II drive cycle is to execute the OBD-II monitors and identify any concerns with the OBD-II system. The DTC P1000 code will be erased of all OBD-II monitors have completed during the OBD-II drive cycle.
[FONT=&quot]The scan tool will be used to observe the status of each OBD-II monitor at the completion of the OBD-II drive cycle. The completion status of the Exhaust Gas Recirculation (EGR), Heated Oxygen Sensor (HO2S), Evaporative emission (EVAP), secondary Air Injection (AIR) (if applicable) and catalyst efficiency monitors can be monitored during the OBD-II drive cycle by viewing the On-Board Readiness Menu on the scan tool.
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Vehicle Preparation for OBD-II or Monitor Repair Verification Drive Cycle


OBD-II Drive Cycle

Monitor Repair Verification Drive Cycles


2000-04 GASOLINE MODELS


Drive Cycle Recommendations


Drive Cycle Procedures


2003-04 6.0L DIESEL


1996-04 7.3L DIESEL






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Discussion Starter #2 (Edited)
Vehicle Preparation for OBD-II

[FONT=&quot]Vehicle Preparation for OBD-II or Monitor Repair Verification Drive Cycle

[/FONT] [FONT=&quot]Note: Vehicles equipped with Power Take Off (PTO) must have this system disengaged before proceeding. Verify by viewing the PTO PID for OFF status.[/FONT]


  1. Attach a scan tool and access the ECT, FLI, IAT PIDs. Verify the IAT PID is between 50-100°F (10-38°C). 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 130°F (54°C).
  3. Clear all DTC's 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.
 

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Discussion Starter #3 (Edited)
OBD-II Drive Cycle

[FONT=&quot]OBD-II Drive Cycle

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[FONT=&quot]Note: The IAT PID must be between 50-100°F (10-38°C) during the OBD-II drive cycle to enter into all the OBD-II monitors. The FLI PID must be between 15% and 85% at all times.[/FONT]

[FONT=&quot]Drive in stop-and-go traffic with at least 4 idle periods (30 seconds each) while observing the status of the OBD-II monitor on the scan tool. If the Exhaust Gas Recirculation (EGR), Heated Oxygen Sensor (HO2S), Evaporative (EVAP) emission, secondary Air (AIR) (if applicable) or catalyst efficiency monitor have not completed, drive on the highway at a constant speed over 40 mph not to exceed 65 mph for up to 15 minutes. Heavy accelerations, sudden decelerations and wide open throttles are not recommended. If the scan tool sends out a three pulse beep at any time, the OBD-II drive cycle has completed.[/FONT]

[FONT=&quot]Note: Vehicles equipped with the EVAP purge flow system or EVAP vapor management flow system monitor do not require EVAP monitor completion to clear the DTC P1000.[/FONT]

1. If the EGR, HO2S, EVAP, secondary AIR (if applicable) or catalyst efficiency monitor has not completed, perform the corresponding monitor verification drive cycle. See monitor repair verification drive cycles.


[FONT=&quot]Bring the vehicle to a stop and retrieve Continuous Memory DTCs to verify the DTC P1000 has been erased.[/FONT]
 

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Discussion Starter #4 (Edited)
Monitor Repair Verification Drive Cycles

[FONT=&quot]Monitor Repair Verification Drive Cycles

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Comprehensive Component Monitor Repair Verification Drive Cycle

  1. Refer to and complete the Vehicle Application Preparation For OBD-II Drive Cycle before initiating the following repair verification steps. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. Start the engine and go through the entire OBD-II Drive Cycle until the Comprehensive Component Monitor shows the completion status by clearing the code P1000 on the scan tool.
  3. If the entire OBD-II Drive Cycle has been performed and the Comprehensive Component Monitor check has not completed, rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
EGR Monitor Repair Verification Drive Cycle (Except Probe)


[FONT=&quot]Note: The ambient air temperature or IAT PID must read a minimum of 32°F (0°C) to initiate the EGR monitor.[/FONT]



  1. Refer to and complete the Vehicle Application Preparation For OBD-II Drive Cycle before initiating the following repair verification steps. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. Start the engine and drive the vehicle for 6 minutes. Drive in stop-and-go traffic for 5 minutes with at least two idle periods. Accelerate to 45 mph (35 mph on Escort/Tracer at more than 1/2 throttle). Maintain speed for 1 minute.
  3. Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
EGR Monitor Repair Verification Drive Cycle For (Probe)

  1. Refer to and complete the Vehicle Application Preparation For OBD-II Drive Cycle before initiating the following repair verification steps. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. Start the engine and drive the vehicle for 24 minutes. Drive in stop-and-go traffic for 19 minutes with at least 4 idle periods. Accelerate to 40 mph at more than 1/2 throttle. Maintain speed for 1 minute. Accelerate on highway to 55 mph. Maintain speed for 4 minutes.
  3. Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
EVAP Running Loss Monitor System Repair Verification Drive Cycle

  1. Perform the Vehicle Application Preparation for OBD-II Drive Cycle section. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. With the scan tool, verify the FTP V PID reads between 2.4 and 2.8 volts with the gas cap removed. Reinstall gas cap.
  3. With the scan tool, view the OBD-II monitors through the On-Board System Readiness Menu.
  4. Drive the vehicle at a constant speed between 35 mph and 65 mph with throttle as steady as possible. Observe the HO2S monitor on the scan tool until it completes (or see FUEL MONITOR OR HO2S MONITOR REPAIR VERIFICATION DRIVE CYCLE).
[FONT=&quot]Bring the vehicle to a stop and access the following PIDs with the scan tool: IAT, FLI, FTP, V, EVAPPDC and EVAPCV.

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  1. Verify the following EVAP monitor entry condition: IAT between 50-100°F (10-38°C).
  2. Drive the vehicle on the highway with a constant speed over 40 mph with throttle as steady as possible. During this time, verify the following additional EVAP monitor entry conditions using the FLI and FTPV PIDs. FLI stable, plus or minus 5 percent between the limits of 15 and 85 percent tank fill. FTP V stable within plus or minus 0.1 volt.
[FONT=&quot]Prior to running the EVAP monitor, when the EVAPPDC PID is less than 75 percent, the canister vent solenoid is open and the system is unsealed. To initiate the EVAP monitor, the EVAPPDC PID must increase to at least 75 percent. At this time, the EVAPCV PID will then display 100 percent (canister vent solenoid closed to seal the system and the monitor will begin to run. Continue to drive at steady throttle with light steering until the EVAPCV PID displays 0 percent (canister vent solenoid open, system unsealed). If this step does not occur as described, proceed to the following note, otherwise proceed to next step.[/FONT]

[FONT=&quot]Note: During the drive cycle or hot ambient temperatures, fuel vapor (from the canister and/or tank) may keep the test from starting. This can be observed on the can tool when either the EVAPPDC PID never reaches 75 percent with stable FLI and FTP PID readings or the EVAPCV PID never goes to 100 percent (canister vent never closes) when the EVAPPDC PID is above the 75 percent minimum to start the test.[/FONT]


  1. Bring the vehicle to a stop.
  2. With the scan tool, view the EVAP monitor for completion through the On-Board System Readiness Menu. Repeat step 7 if the EVAP monitor is not complete.
EVAP Emission Monitor Repair Verification Drive Cycle (Probe)

  1. Check the IAT PID on the scan tool to make sure that the intake air temperature (or ambient temperature) is 40°F (4°C) or greater to initiate the drive cycle.
  2. Start the engine and drive the vehicle for 6 minutes. Drive in stop-and-go traffic for 5 minutes with at least two idle periods. Accelerate to 40 mph. Maintain speed for 1 minute.
  3. Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Catalyst Monitor Repair Verification Drive Cycle

  1. Refer to and complete the Vehicle Application Preparation For OBD-II Drive Cycle before initiating the following repair verification steps. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. Start the engine and drive the vehicle for 25 minutes. Drive in stop-and-go traffic for 20 minutes, include six different constant speeds between 25 and 45 mph. Drive on expressway or highway for an additional 5 minutes.
  3. Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Fuel Monitor or HO2S Monitor Repair Verification Drive Cycle

  1. Refer to and complete the Vehicle Application Preparation For OBD-II Drive Cycle before initiating the following repair verification steps. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. Start the engine and drive the vehicle for 7 minutes. Drive in stop-and-go traffic for 6 minutes, include one idle. Accelerate to 45 mph (35 mph on Escort/Tracer at more than 1/2 throttle). Maintain speed for 1 minute.
  3. Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Misfire Monitor Repair Verification Drive Cycle

  1. For applications with the Fuel Level Input (FLI) circuit to the PCM (terminal No. 12), check the fuel gauge and the FLI PID on the scan tool (if available). The Misfire Monitor can only be tested if the fuel gauge reads above one quarter full or the FLI PID is above 15 percent (percentage fuel tank fill).
  2. Start the engine and drive the vehicle to a location where speeds can reach 55 to 60 mph and coast down to 40 mph without traffic interference.
  3. Accelerate at wide-open throttle to allow vehicle to shift at red-line (if equipped with a tachometer). Immediately return to normal speed limits.
  4. Perform the following drive procedure three consecutive times. Accelerate on highway to 60 mph. Maintain speed for 30 seconds. Coast down with foot off the accelerator pedal from 60 mph to 40 mph.
  5. Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Secondary Air Monitor Repair Verification Drive Cycle

  1. Refer to and complete the Vehicle Application Preparation For OBD-II Drive Cycle before initiating the following repair verification steps. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
  2. Start the engine and proceed through the entire OBD-II Drive Cycle until the Secondary Air Monitor shows the On-Board Readiness Menu completion status on the scan tool.
  3. If the entire OBD-II Drive Cycle has been performed and the Secondary Air Monitor check has not completed, rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
 

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Discussion Starter #5 (Edited)
2000-04 gasoline models

[FONT=&quot]2000-04 GASOLINE MODELS

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Introduction

The following procedure is designed to execute and complete the OBD-II monitors and to clear the Ford P1000, I/M readiness code. To complete a specific monitor for repair verification, follow steps 1 through 4, then continue with the step described by the appropriate monitor found under the "OBD-II Monitor Exercised" column. See Drive Cycle Procedures. When the ambient air temperature is outside 40 to 100°F (4.4 to 37.8°C), or the altitude is above 8000 feet (2438 meters), the EVAP monitor will not run. If the P1000 code must be cleared in these conditions, the PCM must detect them once (twice on some applications) before the EVAP monitor can be "bypassed" and the P1000 cleared. The EVAP "bypassing" procedure is described in the drive cycle. The OBD-II Drive Cycle will be performed using a scan tool. Consult the instruction manual for each described function.
Drive Cycle Recommendations


  1. Most OBD-II monitors will complete more readily using a "steady foot" driving style during cruise or acceleration modes. Operating the throttle in a "smooth" fashion will minimize the time required for monitor completion.
  2. Fuel tank level should be between 1/2 and 3/4 fill with 3/4 fill being the most desirable.
  3. The Evaporative Monitor can only operate during the 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".
 

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Discussion Starter #6 (Edited)
2003-04 6.0l diesel

[FONT=&quot]2003-04 6.0L DIESEL

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Description

Note: Primary function of drive cycle procedure is to clear DTC P1000 and to satisfy specifications for SAE J1979. Each OBD-II monitor must run during drive cycle. If drive cycle has been completed and DTC P1000 is not cleared, repeat entire drive cycle. If a particular step is interrupted, repeat drive mode. If drive cycle is interrupted with a key-off, only drive modes that were incomplete must be run.
[FONT=&quot]Rough road conditions may prevent certain steady state conditions and steady accelerations from validating the transmission and load-related monitors. On models with Power Take-Off (PTO), disengage PTO system before performing drive cycle.[/FONT]

  1. Turn ignition on, but do not crank engine until WAIT TO START indicator turns off, or 10 seconds has passed (whichever is greater).
  2. Start engine. Allow engine to idle with transmission in Park or Neutral for 40 seconds.
  3. The following conditions must be followed to run certain OBD-II monitors that require engine to be under a load. Accelerate steadily to 3rd gear (A/T) or 4th gear (M/T) and keep engine speed at 1500 RPM for 3 seconds. Accelerate steadily from 35 MPH to 65 MPH in about 15 seconds (A/T) or 11 seconds minimum (M/T). Repeat this procedure 3 times while maintaining conditions set in this step. Before proceeding, turn all accessories off and disengage TOW/HAUL.
  4. Before continuing, using scan tool, select EOT PID from PID/DATA MONITOR & RECORD menu. Ensure EOT PID value is more than 140°F (60°C). Allow engine to idle for 20 seconds in Park or Neutral. Turn ignition off. Start engine and allow engine to idle for 40 seconds in Park or Neutral. Repeat QUICK TEST in appropriate SELF-DIAGNOSTICS article. Drive cycle is complete.
[FONT=&quot]If DTC P1000 is present after performing drive cycle, repeat step 3 maintaining a minimum MFDES PID value of 35 milligrams/stroke with engine speed at more than 2000 RPM for 11 seconds. Also, maintain a minimum MFDES of 30 milligrams/stroke with engine speed at more than 2800 RPM for at least 6 seconds. Repeat step 4. MFDES PID value must remain less than 12 milligrams/stroke for 11 seconds.[/FONT]
 

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Discussion Starter #7 (Edited)
1996-04 7.3l diesel

[FONT=&quot]1996-04 7.3L DIESEL

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Description

Primary function of drive cycle procedure is to clear DTC P1000 and to satisfy specifications for SAE J1979. Each OBD-II monitor must run during drive cycle. If drive cycle has been completed and DTC P1000 is not cleared, repeat entire drive cycle. If a particular step is interrupted, repeat drive mode. If drive cycle is interrupted with a key-off, only drive modes that were incomplete must be run.
Performing Drive Cycle


  1. Turn ignition on, but do not crank engine until WAIT TO START indicator turns off, or 10 seconds has passed (whichever is greater).
  2. Start engine. Allow engine to idle with transmission in Park or Neutral for 40 seconds.
  3. The following conditions must be followed to run certain OBD-II monitors that require engine to be under a load. On A/T models, select OVERDRIVE CANCEL to perform test in 3rd gear. On all models, turn on accessories (headlights, A/C compressor, blower fan, etc.). DO NOT use hazards or PTO. Select an uphill or level road. DO NOT select a downhill road. Driving downhill will unload engine and defeat test.
  4. Accelerate steadily to 3rd gear (A/T) or 4th gear (M/T) and keep engine speed at 1500 RPM for 3 seconds. Accelerate steadily from 35 MPH to 65 MPH in about 15 seconds (A/T) or 11 seconds minimum (M/T). Repeat this procedure 3 times while maintaining conditions set in step 3) . Before proceeding, turn all accessories off and disengage OVERDRIVE CANCEL. On A/T models, go to next step. On M/T models, go to step 6.
  5. On A/T models, drive vehicle in 4th gear continuously for one minute. Accelerate steadily from a full stop to 4th gear and then return to a full stop. Repeat this procedure 10 times, then go to next step.
  6. Before continuing, use NGS tester and select EOT PID from PID/DATA MONITOR & RECORD menu. Ensure EOT PID value is more than 140°F (60°C). Allow engine to idle for 20 seconds in Park or Neutral. Turn ignition off. Start engine and allow engine to idle for 40 seconds in Park or Neutral. Repeat QUICK TEST in appropriate SELF-DIAGNOSTICS article. Drive cycle is complete.
  7. If DTC P1000 is present after performing drive cycle, repeat step 4 maintaining a minimum MFDES PID value of 37 milligrams/stroke with engine speed at more than 1500 RPM for 11 seconds. Also, maintain a minimum MFDES of 37 milligrams/stroke with engine speed at more than 2300 RPM for at least 6 seconds. Repeat step 6. MFDES PID value must remain less than 12 milligrams/stroke for 11 seconds.
 
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