Misfire Monitor Specifications

Misfire monitor operation: DTCs P0300 to P0310 (random and specific cylinder misfire), P1336 (crankshaft/camshaft sensor range/performance), P0606 (control module processor), P0315 (crankshaft position system variation not learned), P0316 (misfire detected on startup [first 1000 revolutions]). The monitor execution is continuous, misfire rate calculated every 200 or 1,000 revolutions. The monitor does not have a specific sequence. The CKP and CMP sensors have to be operating correctly to run the monitor. The monitoring duration is the entire driving cycle (see disablement conditions below).

Typical misfire monitor entry conditions: Entry condition minimum/maximum time since engine start-up is 0 seconds, engine coolant temperature is -7°C to 121°C (20°F to 250°F), RPM range is (full-range misfire certified, with 2 revolution delay) 2 revolutions after exceeding 150 RPM below drive idle RPM to redline on tach or fuel cutoff, profile correction factors learned in KAM are Yes, and the fuel tank level is greater than 15%.

Typical misfire temporary disablement conditions: Closed throttle deceleration (negative torque, engine being driven), Fuel shut-off due to vehicle-speed limiting or engine-RPM limiting mode, and a high rate of change of torque (heavy throttle tip-in or tip out)

The profile learning operation includes DTC P0315 - unable to learn profile in three, 97 to 64 km/h (60 to 40 mph) decelerations; monitor execution is once per KAM reset; The monitor sequence: profile must be learned before the misfire monitor is active; The CKP and CMP sensors are required to be OK; AICE communication errors, CKP/CMP in synch. The monitoring duration is 10 cumulative seconds in conditions (a maximum of three, 97 to 64 km/h (60 to 40 mph) de-fueled decelerations).

Typical profile learning entry conditions: Entry conditions from minimum to maximum: Engine in deceleration-fuel cutout mode for 4 engine cycles the brakes are not applied, the engine RPM is 1,300 to 3,700 RPM, the change is less than 600 RPM, the vehicle speed is 48 to 112 km/h (30 to 70 mph), and the learning tolerance is 1%.