Readiness code, generating
Test requirements
- The fuses for the engine electronics OK..
- The Ground (GND) connections at engine and transmission OK.
- The battery voltage must be at least 12.5 Volts.
- Vehicles with automatic transmission: Selector lever in position "P" or "N".
- All electrical consumers switched off. (radiator fan must not run during test).
- The A/C system switched off.
- No DTCs in DTC memory. → Diagnostic Mode 3: Interrogating DTC memory .
- Throttle valve angle 12.0 to 16.0%.
Let vehicle cool off with ignition switched off until the following conditions are met:
- Intake air temperature 10 to 50° C.
- Coolant temperature approximately Intake Air Temperature (10 to 50° C).
Procedure
CAUTION:
To reduce the risk of accident during road test, always observe safety precautions →
Motronic fuel injection system, servicing .
- Connect diagnostic tester. → Diagnostic tester, connecting .
- Start engine and let run 15 minutes at idle.
- Perform a 15 minutes road test in the highest gear or in the highest driving mode on a level driving surface.
The following conditions must be met during this road test:
Engine speed 1800 to 2200 RPM.
Vehicle speed constant 90 Km/h.
- Read readiness code.