Component Inspection (High Pressure Fuel Pump)
WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HIGH PRESSURE FUEL PUMP-I
- Turn ignition switch OFF.
- Disconnect high pressure fuel pump harness connector.
- Check the resistance between high pressure fuel pump terminals.
High pressure fuel pump
Condition
Resistance
+
-
Terminal
1
2
Temperature deg.C (deg.F)
20 (68)
0.45 - 0.55 Ohm
Is the inspection result normal?
YES
GO TO 2.
NO
Replace high pressure fuel pump. Refer to Removal and Installation .
- CHECK HIGH PRESSURE FUEL PUMP-II
With CONSULT
- Reconnect high pressure fuel pump harness connector.
- Start engine.
- On CONSULT screen, select "ENGINE">>"Data Monitor".
- Check that the "FUEL PRES SEN V" indication.
Monitor Item
Condition
Values/Status
FUEL PRES SEN V
Engine speed: Idle
1.120 - 1.310 V
Engine speed: Revving engine from idle to 4, 000 rpm quickly
1.120 - 2.900 V
Without CONSULT
- Reconnect high pressure fuel pump harness connector.
- Start engine.
- Check fuel rail pressure sensor signal voltage.
ECM
Condition
Voltage
Connector
+
-
Terminal
F78
53
83
Engine speed: Idle
1.12 - 1.31 V
Engine speed: Revving engine from idle to 4, 000 rpm quickly
1.12 - 2.90 V
Is the inspection result normal?
YES
INSPECTION END
NO
Replace high pressure fuel pump. Refer to Removal and Installation .