#
FUEL PUMP CONTROL

id014000163400

## Outline

• The function of the fuel pump control is essentially carried over from that of the previous Mazda 121 121DEMIO (DW) models except for the following:

  - Operation conditions

## Operation

### Operation condition

  • When the ignition switch is in the ON position, the PCM turns off the circuit-opening relay after it is on for 1 s.
  • The PCM detects the NE signal trailing edge while the engine is cranked and turns on the circuit-opening relay.
  • The PCM turns off the circuit-opening relay when the engine is stopped.