FUEL PUMP SPEED CONTROL RELAY OPERATION


BHE011413350T07

• Reduces voltage by routing it through the fuel pump resistor to protect the fuel pump when required fuel amount is low due to low engine speed.

1
Fuel pump speed control relay OFF
2
Fuel pump speed control relay ON
3
Fuel pump relay
4
PCM
5
Fuel pump speed control relay
6
Fuel pump resistor
7
Fuel pump
8
Current flow