Nissan GT-R (R35) · Service Manual ENGINE

P062A SUB FUEL PUMP

VR38

P062A

Description


Sensor
 		Input signal to ECM
 		ECM Function
 		Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
 		Engine speed
 		Fuel pump control
 		Sub fuel pump relay
↓
Sub fuel pump
Mass air flow sensor
 		Amount of intake air

The sub fuel pump (1) is installed on the main fuel level sensor unit, fuel filter and fuel pump assembly (2) in line with the fuel pump (3). The ECM activates the sub fuel pump for covering the fuel supply in high engine speed and high load areas. The ECM does not activate the sub fuel pump directly. The ECM controls the fuel pump by turning the sub fuel pump relay ON/OFF.

NNBIB0007ZZ.JPG

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P062A
 		Sub fuel pump control circuit range/performance
 		The sub fuel pump does not activate in the high engine speed and high load areas.
  • Harness or connectors
    (Sub fuel pump circuit is open or shorted)
  • Sub fuel pump relay
  • Sub fuel pump

 
 DTC CONFIRMATION PROCEDURE

 
 1.PERFORM COMPONENT FUNCTION CHECK

Component Function Check


 
 1.CHECK SUB FUEL PUMP

Diagnosis Procedure


 
 1.CHECK SUB FUEL PUMP RELAY POWER SUPPLY CIRCUIT- I
 
 2.DETECT MALFUNCTIONING PART
 
 3.CHECK SUB FUEL PUMP RELAY POWER SUPPLY CIRCUIT- II
 
 4.DETECT MALFUNCTIONING PART
 
 5.CHECK SUB FUEL PUMP RELAY
 
 6.CHECK SUB FUEL PUMP POWER SUPPLY CIRCUIT
 
 7.CHECK SUB FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
 
 8.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-I
 
 9.DETECT MALFUNCTIONING PART
 
 10.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-II
 
 11.DETECT MALFUNCTIONING PART
 
 12.CHECK SUB FUEL PUMP
 
 13.CHECK INTERMITTENT INCIDENT

Component Inspection (SUB FUEL PUMP RELAY)


 
 1.CHECK SUB FUEL PUMP RELAY

Component Inspection (SUB FUEL PUMP)


 
 1.CHECK SUB FUEL PUMP