0
OBD-II Driving Cycle
If you have a 96 or newer vehicle you have the OBD-II diagnostic system. This system is constantly monitoring the sensors and solenoids on the engine. If you have replaced the battery, disconnected the battery or cleared the codes after making a repair you will need to do what is called a "Driving Cycle". This will perform a diagnostic on all the systems the Computer Monitors. This cycle can be done in under fifteen minutes.
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 50ºC (122ºF) and within 6ºC (11ºF) 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 maximum 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.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoGM OBD II Drive Cycle
1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122°F (50°C) and within 11°F (6°C) of the ambient air temperature at startup. Do not leave the key in 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 55mph (88km/hr) 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 55mph (88km/hr) 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 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
6. Accelerate. Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
7. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) 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.
It worked for my Saturn... "Just Drive it 20 Miles" doesn't do it.
Add your answer:
Earn +20 pts
Drive cycle for 1998 Saturn sl2?
SEE OBD II drive cycle
Will a Saturn left hand drive steering rack fit on a right hand drive 2001 saturn?
No it will not.
What is the drive cycle to reset 2001 Toyota solara?
what is the drive cycle of Toyota solara 2002
What is the drive cycle for a 2001 Dodge Ram 1500?
drive cycle for 2001 dodge ram 1500
How do you create a drive cycle on 2001 dodge 1500?
You start the vehicle, when the computer sees that the vehicles started like someone is going to drive it, its a drive cycle
How do you reset computer drive cycle for 00 Saturn 5 speed you have cold started it repeatedly and since driven 2000 miles can it be done any other way?
There is no published drive cycle for Saturn. From my past experience Saturns are a major pain to pass all OBD-II monitors.
What is the drive cycle for a 2001 ford windstar?
check out www . motorcraft service . com ( no spaces ) click on Owner Guides The drive cycle will be shown in the owners manual
What are the Timing marks for a 2001 Saturn 1.9?
There is no external timing marks on 2001 Saturn.
Why 1999 Saturn odb2 drive cycle wil not become ready?
Have a scanner plugged in to see which monitor is not passing. Some times it may take several drive cycles to pass all the monitors.
What is the drive cycle on a 1997 Saturn SL2?
Typically, a "Drive cycle" is referred to in conjunction with clearing the Malfunction Indicator Light on the dashboard.When the computer detects a fault, the MIL is turned on, warning the driver to have the vehicle serviced.Once the problem is repaired, the computer should automatically turn off the MIL, but for some problems, the computer will continue to "store the code" for multiple "drive cycles".In that context, a drive cycle consists of:Start the engineDrive the vehicle around a little bit, enough to warm up the engine.Turn off the engine.That's a drive cycle
How do you change crankshaft sensor in a 2001 Saturn sl?
were is crankshaft sensor located in 2001 Saturn l300
Torque specs for 2001 Saturn?
What is the torque spec for a 2001 Saturn head? It has only a single cam
