1999 NISSAN PRIMERA fuel pump

Wiring DiagramNCEC0447
YEC253
IGNITION SWITCH
ON or START
Refer to EL-POWER.
Detectable line for DTC
Non-detectable line for DTC
Hyper CVT models
M/T models FUSE
BLOCK
(J/B)
ECM
.REFER TO THE FOLLOWING
M1FUSE BLOCK -
Junction Box (J/B)
B8FUSE BLOCK -
Junction Box (J/B)
FUEL
PUMP
RELAY
FUEL PUMP
FUEL PUMPSR20DE
Wiring Diagram
EC-317

Diagnostic ProcedureNCEC0448
1 CHECK OVERALL FUNCTION
1. Turn ignition switch ªONº.
2. Pinch fuel feed hose with fingers.
SEF241XFuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ªONº.
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect fuel pump relay located on the fuse block.
SEF071X3. Turn ignition switch ªONº.
4. Check voltage between terminals 1, 3 and ground with CONSULT-II or tester.
SEF144XVoltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
Fuel filter
Pinch
FUEL PUMPSR20DE
Diagnostic Procedure
EC-318

3 DETECT MALFUNCTIONING PART
Check the following.
I15A fuse
IHarness for open or short between fuse and fuel pump relay
©Repair harness or connectors.
4 CHECK POWER GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect fuel pump harness connector.
SEF299W3. Check harness continuity between fuel pump harness connector terminal 2 and body ground, terminal 1 and fuel pump relay connector
terminal 9J.
Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
IHarness for open or short between fuel pump and body ground
IHarness for open or short between fuel pump and fuel pump relay
©Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK OUTPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 21 and fuel pump relay connector terminal 19C.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 8.
NG©GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M50, F104 (CVT: M81, F115)
IHarness for open or short between ECM and fuel pump relay
NG©Repair open circuit or short to ground or short to power in harness or connectors.
FUEL PUMPSR20DE
Diagnostic Procedure (Cont'd)
EC-319

Component InspectionNCEC0449FUEL PUMP RELAYNCEC0449S01Check continuity between terminals 3 and 5.
Conditions Continuity
12V direct current supply between terminals 1 and 2Ye s
No current supplyNo
If NG, replace relay.
FUEL PUMPNCEC0449S021. Disconnect fuel pump harness connector.
2. Check resistance between terminals 1 and 2.
Resistance: 0.2 - 5.0W[at 25ÉC (77ÉF)]
If NG, replace fuel pump.
8 CHECK FUEL PUMP RELAY
Refer to ªComponent Inspectionº, EC-SR-320.
OK or NG
OK©GO TO 9.
NG©Replace fuel pump relay.
9 CHECK FUEL PUMP
Refer to ªComponent Inspectionº, EC-SR-320.
OK or NG
OK©GO TO 10.
NG©Replace fuel pump.
10 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
SEF145X
SEF326W
FUEL PUMPSR20DE
Component Inspection
EC-320

Fuel Pressure RegulatorNCEC0467
Fuel pressure at idling
kPa (bar, kg/cm2, psi)Vacuum hose is connected Approximately 235 (2.35, 2.4, 34)
Vacuum hose is disconnected Approximately 294 (2.94, 3.0, 43)
Idle Speed and Ignition TimingNCEC0468
Target idle speed*1 rpm No-load*3 (in ªPº or ªNº position) 750 50
Air conditioner: ON rpm In ªPº or ªNº position 825 or more
Ignition timing*2 In ªPº or ªNº position 15É 2É BTDC
Throttle position sensor idle position V0.35 - 0.65
*1: Throttle position sensor harness connector connected
*2: Throttle position sensor harness connector disconnected
*3: Under the following conditions:
IAir conditioner switch: OFF
IElectrical load: OFF (Lights, heater fan & rear window defogger)
ISteering wheel: Kept in straight-ahead position
Ignition CoilNCEC0574
Primary voltage VBattery voltage (11 - 14)
Primary resistance [at 25ÉC (77ÉF)] kW2.2
Secondary resistance [at 25ÉC (77ÉF)] kWApproximately 17
Mass Air Flow SensorNCEC0470
Supply voltage (Heater) VBattery voltage (11 - 14)
Supply voltage (Sensor) VApproximately 5
Output voltage V1.3 - 1.7*
Mass air flow
(Using CONSULT-II or GST) g×m/sec2.5 - 5.0 at idle*
7.1 - 12.5 at 2,500 rpm*
*: Engine is warmed up to normal operating temperature and idling under no-load.
Engine Coolant Temperature SensorNCEC0471
Temperature ÉC (ÉF) Resistance kW
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Fuel PumpNCEC0473
Resistance [at 25ÉC (77ÉF)]W0.2 - 5.0
IACV-AAC ValveNCEC0474
Resistance [at 20ÉC (68ÉF)]W
Between terminals1-2,2-3,4-5and5-620-24
InjectorNCEC0475
Resistance [at 25ÉC (77ÉF)]W13.5 - 17.5
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Pressure Regulator
EC-330

YEL228C
Preceding page
Preceding
page
Next pageFUSE
BLOCK
(J/B)
TIME CON-
TROL UNIT
To
EL-WIPERTo
HA-HEATER
HA-A/CTo
EC-F/PUMP
To
EL-WIP/R
EL-WIPERTo
EL-HSEATTo
EL-DEFTo
EL-DEFTo
EC-F/PUMP
REFER TO THE FOLLOWING
FUSE BLOCK -
Junction Box (J/B)
REAR WINDOW
DEFOGGER
RELAY
FUEL
PUMP
RELAY
: This connector is not shown in“HARNESS LAYOUT”of EL section.
POWER SUPPLY ROUTING
Wiring Diagram—POWER—(Cont’d)
EL-20

GROUND CONNECT TO CONN. CELL CODE
B18/B27 AUTO LEVEL CONTROL UNIT B123 EL-H/AIM
BACK-UP LAMP (Sedan) (LHD) T13 EL-BACK/L
BACK-UP LAMP (Sedan) (RHD) T8 EL-BACK/L
CD AUTO CHANGER B47 EL-AUDIO
CENTRAL UNLOCK/TRUNK OR BACK DOOR RELEASE
SWITCHB121 EL-S/LOCK, EL-D/LOCK
DOOR LOCK ACTUATOR ASSEMBLY (DRIVER’S SIDE)
(UNLOCK SENSOR) (With super lock)D7 EL-S/LOCK, EL-MULTI, EL-THEFT
DOOR LOCK ACTUATOR ASSEMBLY (DRIVER’S SIDE)
(UNLOCK SENSOR) (With power door lock)D26 EL-D/LOCK, EL-MULTI, EL-THEFT
DOOR LOCK ACTUATOR ASSEMBLY (PASSENGER SIDE)
(UNLOCK SENSOR) (With super lock)D16 EL-S/LOCK, EL-MULTI, EL-THEFT
DOOR LOCK ACTUATOR ASSEMBLY (PASSENGER SIDE)
(UNLOCK SENSOR) (With power door lock)D27 EL-D/LOCK, EL-MULTI, EL-THEFT
DOOR LOCK ACTUATOR ASSEMBLY REAR LH (UNLOCK SEN-
SOR) (With super lock)D21 EL-THEFT, EL-MULTI
DOOR LOCK ACTUATOR ASSEMBLY REAR LH (UNLOCK SEN-
SOR) (With power door lock)D28 EL-MULTI, EL-THEFT
DOOR LOCK ACTUATOR ASSEMBLY REAR RH (UNLOCK SEN-
SOR) (With super lock)D25 EL-THEFT, EL-MULTI
DOOR LOCK ACTUATOR ASSEMBLY REAR RH (UNLOCK SEN-
SOR) (With power door lock)D29 EL-MULTI, EL-THEFT
DOOR MIRROR HEATER (DRIVER’S SIDE) (Type-1) D4 EL-DEF
DOOR MIRROR HEATER (DRIVER’S SIDE) (Type-2) D31 EL-DEF
DOOR MIRROR HEATER (PASSENGER SIDE) (Type-1) D13 EL-DEF
DOOR MIRROR HEATER (PASSENGER SIDE) (Type-2) D30 EL-DEF
EXTERNAL TRUNK RELEASE SWITCH (Sedan) T20 EL-S/LOCK, EL-D/LOCK
FUEL PUMP (GA16, QG18, SR20 engine) B30 EC-F/PUMP
FUEL LEVEL SENSOR UNIT B31 EL-METER, EL-WARN
HEADLAMP AIMING SWITCH (Type-1) B106 EL-H/AIM, EL-ILL
HEADLAMP AIMING SWITCH (Type-2) E129 EL-H/AIM, EL-ILL
HEATED SEAT LH B21 EL-HSEAT
HEATED SEAT RH B61 EL-HSEAT
HEATED SEAT SWITCH LH B104 EL-HSEAT
HEATED SEAT SWITCH RH B105 EL-HSEAT
KEY CYLINDER SWITCH (DRIVER’S SIDE) D9 EL-S/LOCK, EL-THEFT, EL-D/LOCK
KEY CYLINDER SWITCH (PASSENGER SIDE) D17 EL-S/LOCK, EL-D/LOCK
POWER SEAT B22 EL-SEAT
POWER SOCKET (Wagon) B86 EL-HORN
POWER WINDOW MAIN SWITCH D5 EL-WINDOW
REAR FOG LAMP (LHD) (Sedan with type-1) T8 EL-R/FOG
REAR FOG LAMP (RHD) (Sedan with type-1) T13 EL-R/FOG
REAR WIPER MOTOR (Sedan) B52 EL-WIP/R
SIDE AIR BAG MODULE LH B142 RS-SRS
SIDE AIR BAG MODULE RH B143 RS-SRS
TRUNK ROOM LAMP SWITCH (Sedan) T10EL-INT/L, EL-WARN, EL-THEFT, EL-
MULTI
ULTRA SONIC CANCEL SWITCH B102 EL-THEFT
GROUND DISTRIBUTION
EL-26

Passenger Compartment
LHD MODELS
YEL235C Time control unit
Blower
relay
Circuit
breaker-1Indicator control unit
Stop lamp switchNATS IMMU
Auto level control unit
Headlamp washer timer
Ignition
relay
Circuit breaker-2
Theft warning horn relay
Fuse block (J/B)
Rear window defogger relayAir bag diagnosis sensor unit
TCM (Transmission control module)Daytime light control unit
Fuse block (J/B)
Time control unt
Power window relay
Front fog lamp relay
Fuel pump relayA/C LOW relay, A/C MED-LOW relay, A/C MED-HIGH relay, A/C HIGH relayECM
LOCATION OF ELECTRICAL UNITS
EL-366