[DirtySouth86]

What's up thecarfilmer? We do emissions at the shop I manage. The problem you have is not from a lack of communication. If the vehicle's ecu could not communicate with the emissions machine, then the emissions machine would not know that your evap and o2 monitors were incomplete. Anytime you disconnect the battery, reset the ecu or clear codes from the ecu, the vehicle has to run through it's own series of self tests on emissions control systems. In order for it to run these tests, it wants to see some specific driving conditions met, sometimes those conditions have to be met multiple times for the monitor to complete. The culmination of the driving conditions for all of the self tests is referred to as a drivecycle. Not sure what the standard is in California, but in GA, a vehicle that is 2001 year model or newer can pass with one monitor incomplete.


Here are the drive patterns to complete the o2 sensor monitor:
CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) See: Powertrain Management\Computers and Control Systems\Testing and Inspection\Reading and Clearing Diagnostic Trouble Codes.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
7. Perform the following the confirmation driving pattern.

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

1. Idle the engine for 10 seconds or more [A].
2. Accelerate the vehicle to 97 km/h (60 mph) or more within 20 seconds [B].
3. Drive the vehicle at 97 km/h (60 mph) or more for 20 seconds or more [C].
4. Release the accelerator pedal to Decelerate until the vehicle speed decreases to less than 64 km/h (40 mph) [D].

HINT
Release the accelerator pedal fully to perform the fuel-cut.

1. Drive the vehicle at 60 km/h (40 mph) or less for 20 seconds or more [E].
2. Accelerate the vehicle to 97 km/h (60 mph) or more within 10 seconds [F].
3. Release the accelerator pedal and stop the vehicle [G].

• 1. Enter the following menus: Powertrain / Engine / Trouble Codes.
  2. Read pending DTCs.

If you can not get this monitor to complete, you may have a problem with one of the o2 sensors.


Here are the Driving patterns for your Evap monitor:

1. KEY-OFF MONITOR CONFIRMATION

1. (a)

PreconditionsThe monitor will not run unless:

• The vehicle has been driven at 48 km/h (30 mph) or more for a total of 10 minutes or more.
• The fuel tank is less than 90% full.
• The engine coolant temperature is between 5°C and 45°C (41°F and 113°F).
• The intake air temperature is between 5°C and 50°C (41°F and 122°F).
• The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph]).

(b)Monitor Conditions(1)Allow the engine to idle for at least 5 minutes.(2)Turn the ignition switch off and wait for 6 hours (8 or 10.5 hours)