Readiness code, generating: Procedure

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Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .
Perform a road test.
The following operating condition must be met during this road test:
- Coolant temperature must reach at least 80 °C, see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 5, Coolant temperature.
Observe the safety precautions that apply to road tests. See SAFETY PRECAUTIONS .

Let vehicle cool off with the ignition switched off until the following condition is met:
- Coolant temperature approx. intake air temperature (5 to 35 °C), see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 5, Coolant temperature.
Continue vehicle road test:
The following operating conditions must be met during this road test:
Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).

Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.
NOTE:
- Vehicle speed, see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 13, Vehicle speed.
- Engine speed, see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 12, engine rotations per minute (RPM).
After 10 minutes, downshift until an engine speed of 2800 to 3500 RPM has been reached.
Drive in deceleration mode at a speed up to approx. 1800 RPM.

Park vehicle and let engine run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
Continue vehicle road test:

The following operating conditions must be met during this road test:

Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).
Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.

Park vehicle and let engine run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
Read readiness code, see READ READINESS CODE .
If a 1 is displayed instead of a 0 in the 8-digit number block:
Perform a road test anew.
The following operating conditions must be met during this road test:
- Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.
Park vehicle and let run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
Read readiness code, see READ READINESS CODE .
In 8-digit number block:
- Display position 5: Secondary Air Injection (AIR) system
and/or
- Display position 6: EVAP canister system
a 1 instead of 0 is displayed:
Repeat complete procedure, see PROCEDURE