Preconditions for the test:
Engine idling.
No faults stored.
Battery voltage above 11.5 V.
Engine temperature above 80 °C.
Induction air temperature below 60 °C.
All electrical loads switched off.
Gear selector set to ”P/N”.
Signals from brake light switch and brake pedal switch OK.
Note:
To check the secondary air system.
Procedure:
Choose the function: Secondary air system.
Press and hold down the brake pedal. The engine control unit increases the engine speed to about 1400 rpm.
The secondary air system diagnostic status changes from ”Test off” to ”Test on”.
Let the engine idle until the diagnostic status changes from ”Test on” to ”Syst. OK! / Syst. not OK!”.