Relationship Chart - Driving Pattern For "Misfire"
Note: Check TSBs for any available updates to drive patterns.
RELATIONSHIP BETWEEN MIL, DTC, CONSULT AND DRIVING PATTERNS FOR "MISFIRE
*1. When the same malfunction is detected in two consecutive trips, MIL will light up.
*2. MIL will go off after vehicle is driven three times (pattern C) without any malfunctions.
*3. When a malfunction is detected for the first time, the DTC and the freeze frame data will be stored in ECM.
*4. The DTC and the freeze frame data will not be displayed any longer after vehicle is driven 80 times (pattern B) with out the same malfunction. (The DTC and the freeze frame data still remain in ECM.)
*5. Other screen except DATA MONITOR (AUTO TRIG) can not display the malfunction.
*6. DATA MONITOR (AUTO TRIG) can display the malfunction at the moment it is detected.
*7. The malfunction can not be displayed because the timing to set DATA MONITOR (AUTO TRIG) screen was missed against the NG detection.
*8. The DTC and the freeze frame data will not be displayed any longer after vehicle is driven 80 times (pattern B) without the same malfunction. (The DTC and the freeze frame data still remain in ECM.)
DRIVING PATTERN A
DRIVING PATTERN B
Driving pattern B means vehicle operation is as follows:
All components and systems should be monitored at least once by the OBD system.
- The B counter will reset when the malfunction is detected twice regardless of the driving pattern.
- The B counter will count the number of times driving pattern B is satisfied without the malfunction.
- The DTC will not be displayed after the B counter reaches 80.
DRIVING PATTERN C
Driving pattern C means vehicle operation is as follows:
1. Driving pattern A should be satisfied.
2. 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" or "2" or *1.
The C counter will be counted up when "1" and "2" are satisfied without the same malfunction.
The MIL will go off when the C counter reachers 3 or *2.