Monitor Repair Verification Drive Cycles
[FONT="]Monitor Repair Verification Drive Cycles
[/FONT] Comprehensive Component Monitor Repair Verification Drive Cycle
- 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.
- 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.
- 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="]Note: The ambient air temperature or IAT PID must read a minimum of 32°F (0°C) to initiate the EGR monitor.[/FONT]
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.
- 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.
- Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
EGR Monitor Repair Verification Drive Cycle For (Probe)
- 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.
- 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.
- Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
EVAP Running Loss Monitor System Repair Verification Drive Cycle
- Perform the Vehicle Application Preparation for OBD-II Drive Cycle section. See VEHICLE PREPARATION FOR OBD-II OR MONITOR REPAIR VERIFICATION DRIVE CYCLE.
- 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.
- With the scan tool, view the OBD-II monitors through the On-Board System Readiness Menu.
- 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="]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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- Verify the following EVAP monitor entry condition: IAT between 50-100°F (10-38°C).
- 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="]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="]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]
- Bring the vehicle to a stop.
- 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)
- 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.
- 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.
- Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Catalyst Monitor Repair Verification Drive Cycle
- 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.
- 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.
- Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Fuel Monitor or HO2S Monitor Repair Verification Drive Cycle
- 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.
- 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.
- Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Misfire Monitor Repair Verification Drive Cycle
- 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).
- 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.
- Accelerate at wide-open throttle to allow vehicle to shift at red-line (if equipped with a tachometer). Immediately return to normal speed limits.
- 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.
- Rerun Quick Test. See QUICK TEST in appropriate SELF-DIAGNOSTICS article.
Secondary Air Monitor Repair Verification Drive Cycle
- 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.
- 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.
- 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.