Nissan Sentra B18 (2020-2025) Service Manual: Frp Control System

Component Inspection

1. CHECK HIGH PRESSURE FUEL PUMP-1

   1. Turn ignition switch OFF.

   2. Disconnect high pressure fuel pump harness connector.

   3. Check the resistance between high pressure fuel pump terminals as follows.

      High pressure fuel pump		Condition		Resistance
      +	−
      Terminal
      1	2	Temperature [°C (°F)]	20 – 30 (68 – 86)	0.46 – 0.51 Ω

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   Replace high pressure fuel pump. Refer to Removal and Installation.

2. CHECK HIGH PRESSURE FUEL PUMP-2

   With CONSULT

   1. Reconnect high pressure fuel pump harness connector.

   2. Start the engine.

   3. Check “FUEL PRES SEN” in “DATA MONITOR” of “ENGINE” with CONSULT.

      Monitor item	Condition		Indication
      FUEL PRES SEN V	Engine: After warming up Selector lever: P or N position A/C switch: OFF No load	Engine speed: idle	0.820 – 1.140 V
      		Revving engine from idle to 4,000 rpm quickly	0.820 – 2.900 V

   Without CONSULT

   1. Start the engine.

   2. Check fuel rail pressure sensor signal voltage.

   +		−	Condition	Voltage (Approx.)
   Fuel rail pressure sensor
   Connector	Terminal
   F101	2	Ground	[Engine is running] Engine warm-up condition Engine speed: Idle	0.82 – 1.14 V
   			[Engine is running] Engine warm-up condition Revving engine from idle to 4,000 rpm quickly	0.82 – 2.9 V

   Is the inspection result normal?

   YES >>

   INSPECTION END

   NO >>

   Replace high pressure fuel pump. Refer to Removal and Installation.

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