Condition for fault identification

Temperature related-precondition:

• Engine cold start, in order to ensure the catalytic converter heating is active.

Time related-precondition:

• 5 s after engine on

Other preconditions:

• Engine running.

Catalytic converter heating is active

ECE: after every cold start

US: after every engine start

Control unit voltage: 9 V to 16 V.

Terminal 15 on