Nissan Juke Service and Repair Manual : Fuel pressure control
Fuel pressure control : System Diagram
Fuel pressure controlL : System Description
INPUT/OUTPUT SIGNAL CHART
*: ECM determines the start signal status by the engine speed signal and battery voltage.
CVT models
System Description
Low fuel pressure control • The low fuel pressure pump is controlled by ECM. The pumped fuel passes through the fuel filter and is sent to the high pressure fuel pump.
• Low fuel pressure is adjusted by the fuel pressure regulator.
High fuel pressure control The high pressure fuel pump raises the pressure of the fuel sent from the low pressure fuel pump. Actuated by the camshaft, the high pressure fuel pump activates the high pressure fuel pump solenoid based on a signal received from ECM, and adjusts the amount of discharge by changing the timing of closing the inlet check valve to control fuel rail pressure.
M/T models
System Description
Low fuel pressure control • The low fuel pressure pump is controlled by the fuel pump control module (FPCM) and pumps fuel according to a driving condition. The pumped fuel passes through the fuel filter and is sent to the high pressure fuel pump. FPCM controls the low pressure fuel pump, according to a signal from ECM as shown in the table below.
• Low fuel pressure is adjusted by the fuel pressure regulator.
High fuel pressure control The high pressure fuel pump raises the pressure of the fuel sent from the low pressure fuel pump. Actuated by the camshaft, the high pressure fuel pump activates the high pressure fuel pump solenoid based on a signal received from ECM, and adjusts the amount of discharge by changing the timing of closing the inlet check valve to control fuel rail pressure
Direct injection gasoline system
Direct injection gasoline system : System Diagram
Direct injection gasoline system : System Description
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under ...
Electric ignition system
Electric ignition system : System Diagram
Electric ignition system : System Description
INPUT/OUTPUT SIGNAL CHART
*1: CVT models
*2: M/T models
*3: ECM determines the start signa ...
Other materials:
P0703 brake switch B
Description
BCM detects ON/OFF state of the stop lamp switch and transmits the data to
the CVT control unit via CAN
communication by converting the data to a signal.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC C ...
B2608 starter relay
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2608 is displayed with DTC U1000, first perform the trouble diagnosis
for DTC U1000. Refer to
BCS-83, "DTC Logic".
• If DTC B2608 is displayed with DTC U1010, first perform the trouble diagnosis
for DTC U1010. Refer to
BCS-84, &qu ...
Inspection
INSPECTION AFTER REMOVAL
Oil Cooler
Check oil cooler for cracks. Check oil cooler for clogging by blowing through
engine coolant inlet. If necessary,
replace oil cooler assembly.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and the engine coolant level and add engine oil
and ...
