Explanation For Driving Patterns For Misfire < Exhaust Quality Deterioration >, Fuel Injection System

< Driving Pattern B > 

Driving pattern B means the vehicle operation as follows:

All components and systems should be monitored at least once by the OBD system.

• The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
• The B counter will be counted up when driving pattern B is satisfied without any malfunction.
• The MIL will go off when the B counter reaches 3. (*2 in OBD SYSTEM OPERATION CHART)

< Driving Pattern C > 

Driving pattern C means the vehicle operation as follows:

1. The following conditions should be satisfied at the same time:

   Engine speed: (Engine speed in the freeze frame data) +/-375 rpm

   Calculated load value: (Calculated load value in the freeze frame data) x (1+/-0.1) [%] Engine coolant temperature (T) condition:

• When the freeze frame data shows lower than 70° C (158° F), T should be lower than 70° C (158° F).
• When the freeze frame data shows higher than or equal to 70° C (158° F), T should be higher than or equal to 70° C (158° F).

Example:

If the stored freeze frame data is as follows:

Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80° C (176° F)

To be satisfied with driving pattern C, the vehicle should run under the following conditions:

Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70° C (158° F)

• The C counter will be cleared when the malfunction is detected regardless of (1).
• The C counter will be counted up when (1) is satisfied without the same malfunction.
• The DTC will not be displayed after C counter reaches 80.
• The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is stored in ECM.