FUEL PUMP CONTROL [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]
FUEL PUMP CONTROL [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]
SM2565309
id0140u0004100
Outline
Block Diagram
|
Operation
Fuel pump relay
-
• The PCM switches the fuel pump relay on/off according to the engine operation conditions.
Relay ON/OFF |
Control conditions |
---|---|
ON
|
• When any of the following conditions is met:
|
OFF
|
• When engine is stopped (excludes engine stop by i-stop control)
• Immobilizer system related information (engine start prohibited) received from BCM
• Collision signal from SAS control module is received
|
Fuel pump control module
-
• The PCM determines the fuel pump discharge amount according to the engine operation conditions, and controls the output duty ratio to the fuel pump control module according to the discharge amount.
Output duty ratio |
Control conditions |
---|---|
95%
|
• When any of the following conditions is met:
|
10—90%
|
• Except for control conditions with output duty ratio of 5% or 95%
|
5%
|
• When engine is stopped by i-stop control
|
Fuel pump operation circuit diagram
|