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What is your question?
Battery was disconnected and I need to get the following monitors to complete the diagnostic testing: O2 sensor, Catalyst Monitor, Evaporative System Monitor, and the O2 Sensor Heater Monitor. If I can't get all monitors to complete, is there a local shop that can do the drive cycle for me?
2 Replies
To perform an OBDII Driving cycle do the following: 1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run. 2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim. 3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed. 4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed. 5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed. 6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3. 7.Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst. 8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
a few days of normal driving..around town,interstate,stop and go driving.50-200 miles...
Thanks for the responses to my my question on the OBD2 drive cycle. After I posted, I looked into my owners manual and found the answer under the title: Readiness for Inspection/Maintenance (I/M) testing. I hooked up my scan tool which incomplete on 4 of the monitors. I headed to the nearest freeway which was normally a 5 minute drive but was stop and go due to road construction with only 1 lane open. I got on the freeway, accelerated smoothly to 65 and turned on the cruise control. The instructions said to drive at least 10 minutes, so I drove 20. I got off the freeway and drove home on surface streets since the 2nd instruction was to drive at least 20 minutes in stop and go traffic. I noticed that 3 of the 4 incomplete, were now OK. I didn't see when the monitors completed because I didn't want an accident. Any way to sum it up, follow the manual, it works.
Thanks for the responses to my my question on the OBD2 drive cycle. After I posted, I looked into my owners manual and found the answer under the title: Readiness for Inspection/Maintenance (I/M) testing. I hooked up my scan tool which incomplete on 4 of the monitors. I headed to the nearest freeway which was normally a 5 minute drive but was stop and go due to road construction with only 1 lane open. I got on the freeway, accelerated smoothly to 65 and turned on the cruise control. The instructions said to drive at least 10 minutes, so I drove 20. I got off the freeway and drove home on surface streets since the 2nd instruction was to drive at least 20 minutes in stop and go traffic. I noticed that 3 of the 4 incomplete, were now OK. I didn't see when the monitors completed because I didn't want an accident. Any way to sum it up, follow the manual, it works.