>
> - OBD-II Driving Cycle -
>
> A complete driving cycle should perform diagnostics on all systems. A
> complete driving 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 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.
>
> - Bernd
(9) Drive by your local Emission Approval Station. Remove foot from
Accelerater pedal. Get out and approach nearest EAS member.
(10) Have him bend over and insert large boot to a depth of 24 inches.
WHAT BS!! (Thanks Bernd, I know some DML'ers need this info) BUT
SHEESH!!....
NOT HERE, NOT YET, THANK GOD!!
GS -
Is there a Gore in our Country's future?...YIKES!!
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:17:12 EDT