Fail Safe
- Intake manifold pressure sensor process: Estimate the pressure from engine speed and throttle position. When also throttle position is NG, adopt 66.7 kPa (500 mmHg, 19.69 inHg) as definite value.
- Heavy fuel judgment: Not allowed to carry out the heavy judgment.
- Fuel cut control: Fuel cut will operate at engine high speed.
- EVAP density learning (Fuel): Not allowed to learn
- Knocking compensation
At normal condition: Self-learning ignition advance value = knock F/B advance + overall self-learning advance value + partial self-learning advance value
When malfunctioning: Self-learning ignition advance value = -6°CA (6°CA retard)
Knock F/B advance value = 0°CA
Prohibit overall self-learning
Partially prohibit self-learning
- ISC control: Not allowed to calculate the amount of ISC feedback.
Amount of ISC open-loop compensation = Fixed at 6.82%
- Purge control: Not allowed to purge