On-Board Diagnostics

Type of diagnosis: 

• Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria: 

• Engine running. Main relay voltage exceeding 11V. Coolant temperature exceeding 60°C.

Fault criteria: 

• Knock voltage below 0.25V when spark produced during 25 combustions.

Dependents: 

• P0115 , P0116 , P0117 , P0118  and P0119 .

System reaction to a fault: 

• Knock signal set to 5V. In this way knock detection will take place continuously on all cylinders when under high load.

OK report: 

• Enable criteria fulfilled. Fault criteria not fulfilled within 120 s.

Fault handling:  (For more information, see FAULT HANDLING III, OTHER EMISSION-RELATED COMPONENTS AND FUNCTION ).

• Type III.