Function Sequence For Ignition Off
WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.
When ECM receives ignition switch OFF signal (i.e. cut off the ignition power supply), the following components is switched off and the processor power-down is started:
- Pressure regulating valve
- Fuel injectors
- Quantity control valve
- Fuel pump over the FPCM (Fuel Pump Control Module)
Processor power-down is determined by ECM and performed for approximately four seconds. Processor power-down may continue for a few minutes depending on a function, such as on-board diagnosis system and thermal management.
During processor power-down, System Test is performed by ECM and Malfunctioning Memory is updated.