Readiness code, generating: Procedure

Connect diagnostic tester. See DIAGNOSTIC TESTER, CONNECTING .
Start engine and let run at idle for at least 15 minutes.
Perform a 15 minute road test in the highest gear or in the highest driving mode on a level driving surface.
The following operating conditions must be met during this road test:
- Engine speed approx. 1800 to 2200 RPM, see DIAGNOSTIC MODE 1: CHECK MEASURING VALUES , PID 12, engine rotations per minute (RPM)
- Vehicle speed constant 90 km/h, see DIAGNOSTIC MODE 1: CHECK MEASURING VALUES , PID 13, Vehicle speed
Do not switch off engine and let it run at idle for at least 3 minutes.
Secondary Air Injection (AIR) system will be checked during this idle phase.
For at least 30 minutes, switch off engine so that coolant temperature can drop to about a minimum of 10 °C.
Start engine and let run let it run at idle for at least 2 minutes.
Engine coolant temperature sensor will be checked during this idle phase.

Observe the safety precautions that apply to road tests. See SAFETY PRECAUTIONS .