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Home >> Audi >> 2019 >> A4 Premium Plus >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Generic Scan Tool [DBPA] (General Information) >> Generic Scan Tool >> Diagnosis And Testing >> Readiness Code >> Test Requirements >> Readiness Drive Cycle Procedure
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Readiness Drive Cycle Procedure

-- CONNECT: Scan Tool.

Step Procedure Result / Action to Take
1 Activate Monitors:
  • START: Engine and idle for 2 - 3 min.
  • Monitoring Active.
  • Executes Misfire Monitoring.
2 O2 Sensor Monitoring:
  • DRIVE: Vehicle at 45 - 55 mph for a continuous 7 minute period. Avoid stopping.
  • Executes O2 Sensor Monitoring.
  • Executes Fuel Trim Monitoring.
  • Executes EVAP Monitoring.
3 Fuel Cut-Off Monitoring:
  • ACCELERATE: Vehicle to an engine speed of 5, 00 RPM; lift off the throttle until the engine speed is around 1, 00 RPM.
  • Fuel Cut-Off Monitoring Ready.
4 Catalyst Monitoring:
  • ACCELERATE: Vehicle smoothly to 60 - 65 mph, cruise at a constant speed for 5 min.
  • Executes Catalyst Monitoring.
  • Executes O2 Sensor Monitoring.
  • Executes Fuel Trim Monitoring.
  • Executes Misfire Monitoring.
  • Executes EVAP Monitoring.
5 Secondary Air Injection, EVAP Monitoring:
  • DRIVE: Vehicle for 30 - 40 min. at a constant speed of 50 - 70 mph in high gear for 2 min with no coasting.
  • Executes Secondary Air Injection Monitoring.
  • Executes EVAP Monitoring.
  • Check the status of the readiness code.

-- If any engine monitor fails the drive cycle test. Repeat the drive cycle test until all engine monitors have successfully run through and passed.

NOTE:

When repeating the drive cycle operation for a failed evaporative or thermostat monitor, allow the engine to cool until the coolant temperature and the ambient air temperature are between 10° C and 35° C with a difference between them no greater than 4° C and then repeat the drive cycle operation.

Depending on the scan tool used, the readiness code status may be displayed as complete, passed or OK. At an ambient air temperature < 7° C, the setting of the readiness for the NOx catalytic converter test is delayed. Here the vehicle must be driven considerably longer.

Readiness Codes and Monitoring Completed 

  1. If any engine monitor fails the drive cycle test, repeat the drive cycle test until all engine monitors have successfully run through and passed.
  2. If the drive cycle operation fails again:
  3. Check the DTC memory for stored DTCs.
  4. Repair the vehicle if necessary.
  5. Repeat the drive cycle operation until all engine monitors have successfully run through and passed.
  6. Remove the scan tool and switch the ignition off.
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