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Sep 22, 2009 | 09:46 AM

RedHorse1

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ODB II question

I had the battery disconnected earlier in the month (5th Sep) and have been checking the ODB II pretty regularly since.
Still waiting on the Evap System check to complete (need an inspection).
Any ideas on what completes that check cycle? Number of starts? Number of Miles? Combination of both? Phases of the moon? # of Starbuck visits? Grrrr!
Thanks in advance.

Sep 22, 2009 | 10:38 AM

happeetxn

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Just curious as to how does this relate to getting an inspection? Do you get any codes?

Craig

Sep 22, 2009 | 10:43 AM

RedHorse1

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Hey Craig,
No codes, but my understanding is all of the ODB II test cycles must be complete to pass otherwise a code that doesn't show up immediately could be cleared as I pull into the inspection shop.

Sep 22, 2009 | 10:45 AM

alloro

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Quote:

Originally Posted by RedHorse1

Still waiting on the Evap System check to complete (need an inspection).

Most states allow one or two readiness test to be incomplete and still approve the inspection. This is especially true for the Evap readiness test because it's such a bear to get set.

Sep 22, 2009 | 10:51 AM

alloro

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I see you're from Texas so I went and found the answer for you on this page.
http://www.txdps.state.tx.us/vi/Misc/faq/faq_obdii.htm

The first line reads, "Read about the recent changes (PDF) to current OBDII testing requirements" and the "recent changes" is a link to the following document:
http://www.txdps.state.tx.us/vi/Misc...tice092008.pdf

In a nutshell, you could have two incomplete readiness test up until last year, now it has been reduced to one. So you're all set to go for inspection.

Sep 22, 2009 | 05:37 PM

RedHorse1

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I had assumed (yes, I know what the acronym assume means) that all monitors had to be complete here in TX. YeeHaww!
I appreciate you researching this!
Any idea for what will finally cause the evap test to complete?

Sep 22, 2009 | 07:15 PM

alloro

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http://www.obdii.com/drivecycleford.html

Ford Motor Company Driving Cycle

Description of OBDII Drive Cycle
The following procedure is designed to execute and complete the OBDII 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 "OBDII Monitor Exercised" column. When the ambient air temperature is outside 4.4 to 37.8°C (40 to 100° F), or the altitude is above 2438 meters (8000 feet), 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 following drive cycle.
The OBDII Drive Cycle will be performed using a scan tool. Consult the instruction manual for each described function. NOTE: A detailed description of a Powertrain Control Module (PCM) Reset is found in this section, refer to the table of contents.

Drive Cycle Recommendations:

Most OBDII 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.
Fuel tank level should be between 1/2 and 3/4 fill with 3/4 fill being the most desirable.
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".

WARNING
STRICT OBSERVANCE OF POSTED SPEED LIMITS AND ATTENTION TO DRIVING CONDITIONS ARE MANDATORY WHEN PROCEEDING THROUGH THE FOLLOWING DRIVE CYCLES.
For best results, follow each of the following steps as accurately as possible:

<CENTER><TABLE cellSpacing=20 cellPadding=2 width="80%" border=0><TBODY><TR><TD vAlign=bottom align=middle width="15%">OBDII Monitor
Exercised

</TD><TD vAlign=bottom align=middle width="60%">Drive Cycle Procedure

</TD><TD vAlign=bottom align=middle width="25%">Purpose of
Drive Cycle Procedure

</TD></TR><TR><TD vAlign=top align=middle width="15%">Drive Cycle
Preparation

</TD><TD vAlign=top width="60%">1. Install scan tool. Turn key on with the engine off. Cycle key off, then on. Select appropriate Vehicle & Engine qualifier. Clear all DTC's/ Perform a PCM Reset.</TD><TD vAlign=top width="25%">Bypasses engine soak timer. Resets OBDII Monitor status.</TD></TR><TR><TD vAlign=top align=middle width="15%"></TD><TD vAlign=top width="60%">2. Begin to monitor the following PIDs: ECT, EVAPDC, FLI (if available) and TP MODE.
Start vehicle WITHOUT returning to Key Off.

</TD><TD vAlign=top width="25%"></TD></TR><TR><TD vAlign=top align=middle width="15%"></TD><TD vAlign=top width="60%">3. Idle vehicle for 15 seconds. Drive at 64 Km/h (40 MPH) until ECT is at least 76.7°C (170° F).</TD><TD vAlign=top width="25%"></TD></TR><TR><TD vAlign=top align=middle width="15%">Prep for Monitor Entry</TD><TD vAlign=top width="60%">4. Is IAT within 4.4 to 37.8°C (40 to 100° F)? If Not, complete the following steps but, note that step 14 will be required to "bypass " the Evap monitor and clear the P1000.</TD><TD vAlign=top width="25%">Engine warm-up and provide IAT input to the PCM.</TD></TR><TR><TD vAlign=top align=middle width="15%">HEGO</TD><TD vAlign=top width="60%">5. Cruise at 64 Km/h (40 MPH) for up to 4 minutes.</TD><TD vAlign=top width="25%">Executes the HEGO monitor.</TD></TR><TR><TD vAlign=top align=middle width="15%">EVAP</TD><TD vAlign=top width="60%">6. Cruise at 72 to 104 Km/h (45 to 65 MPH) for 10 minutes (avoid sharp turns and hills) Note, to initiate the monitor: TP MODE should =PT, EVAPDC must be >75%, and FLI must be between 15 and 85%</TD><TD vAlign=top width="25%">Executes the EVAP Monitor (If IAT is within 4.4 to 37.8° (40 to 100°F))</TD></TR><TR><TD vAlign=top align=middle width="15%">Catalyst</TD><TD vAlign=top width="60%">7. Drive in stop and go traffic conditions. Include five different constant cruise speeds, ranging from 40 to 72 Km/h (25 to 45 MPH) over a 10 minute period.</TD><TD vAlign=top width="25%">Executes the Catalyst Monitor.</TD></TR><TR><TD vAlign=top align=middle width="15%">EGR</TD><TD vAlign=top width="60%">8. From a stop, accelerate to 72 Km/h (45 MPH) at 1/2 to 3/4 throttle. Repeat 3 times.</TD><TD vAlign=top width="25%">Executes the EGR Monitor.</TD></TR><TR><TD vAlign=top align=middle width="15%">SEC AIR/CCM (Engine)</TD><TD vAlign=top width="60%">9. Bring the vehicle to a stop. Idle with transmission in drive (neutral for M/T) for 2 minutes.</TD><TD vAlign=top width="25%">Executes the ISC portion of the CCM.</TD></TR><TR><TD vAlign=top align=middle width="15%">CCM (Trans)</TD><TD vAlign=top width="60%">10. For M/T, accelerate from 0 to 80 Km/h (o to 50 MPH), continue to step 11. For A/T, from a stop and in overdrive, moderately accelerate to 80 Km/h (50 MPH) and cruise for at least 15 seconds. Stop vehicle and repeat without overdrive to 64 Km/h (40 MPH) cruising for at least 30 seconds. While at 64 Km/h (40 MPH) , activate overdrive and accelerate to 80 Km/h (50 MPH) and cruise for at least 15 seconds. Stop for at least 20 seconds and repeat step 10 five times.</TD><TD vAlign=top width="25%">Executes the transmission portion of the CCM.</TD></TR><TR><TD width="15%">Misfire & Fuel Monitors</TD><TD width="60%">11. From a stop, accelerate to 104 Km/h (65 MPH). Decelerate at closed throttle until 64 Km/h (40 MPH) (no brakes). Repeat this 3 times.</TD><TD width="25%">Allows learning for the misfire monitor.</TD></TR><TR><TD width="15%">Readiness Check</TD><TD width="60%">12. Access the ON-Board System Readiness (OBDII monitor status) function on the scan tool. Determine whether all non-continuous monitors have completed. If not, go to step 13.</TD><TD width="25%">Determines if any monitor has not completed.</TD></TR><TR><TD width="15%">Pending Code Check and Evap Monitor "Bypass" Check</TD><TD width="60%">13. With the scan tool, check for pending codes. Conduct normal repair procedures for any pending code concern. Otherwise, rerun any incomplete monitor.
Note: if the EVAP monitor is not complete AND IAT was out of the 4.4 to 37.8° C (40 to 100° F) temperature range in step #4, or the altitude is over 2438 m. (8000 ft.), the Evap "bypass" procedure must be followed.
Proceed to step 14.

</TD><TD width="25%">Determines if a pending code is preventing the clearing of P1000.</TD></TR><TR><TD vAlign=top align=middle width="15%">Evap Monitor "Bypass"</TD><TD vAlign=top width="60%">14. Park vehicle for a minimum of 8 hours. Repeat steps 2 through 12. DO NOT REPEAT STEP 1.</TD><TD vAlign=top width="25%">Allow the "bypass" counter to increment to two.</TD></TR></TBODY></TABLE></CENTER>

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