Diagnostic Procedure

CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
  Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON.
  
  Fig 1: Pinching Fuel Feed Hose
  Courtesy of NISSAN NORTH AMERICA, INC.
OK or NG

OK: INSPECTION END

NG: GO TO 2.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 113 and ground with CONSULT-II or tester.
  Voltage: Battery voltage
  
  Fig 2: Check Voltage Between ECM Terminal 113 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
OK or NG

OK: GO TO 5.

NG: GO TO 3.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
Check voltage between IPDM E/R terminal 46 and ground with CONSULT-II or tester.

Voltage: Battery voltage

Fig 3: Checking Fuel Pump Power Supply
Courtesy of NISSAN NORTH AMERICA, INC.

OK or NG

OK: GO TO 4.

NG: GO TO 13.
DETECT MALFUNCTIONING PART
Check harness for open or short between IPDM E/R and ECM.

Repair harness or connectors.
CHECK CONDENSER-2 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect condenser-2 harness connector.
4. Turn ignition switch ON.
  
  Fig 4: Checking Condenser-2 Power Supply Circuit
  Courtesy of NISSAN NORTH AMERICA, INC.
5. Check voltage between condenser-2 terminal 1 and ground with CONSULT-II or tester.
  Voltage: Battery voltage should exist for 1 second after ignition switch is turned ON.
  
  Fig 5: Checking Voltage Between Condenser-2 Terminal 1 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
6. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 8.

NG: GO TO 6.
CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG

OK: GO TO 7.

NG: Replace fuse.
CHECK CONDENSER-2 POWER SUPPLY CIRCUIT-II FOR OPEN AND SHORT
1. Disconnect IPDM E/R harness connector E119.
2. Check harness continuity between IPDM E/R terminal 13 and condenser-2 terminal 1.
  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 13.

NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK CONDENSER-2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between condenser-2
  + terminal 2 and ground.
  
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
2. Also check harness for short to power.
OK or NG

OK: GO TO 9.

NG: Repair open circuit or short to power in harness or connectors.
CHECK CONDENSER-2
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 10.

NG: Replace condenser-2.
CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect "fuel level sensor unit and fuel pump" harness connector.
3. Disconnect IPDM E/R harness connector E119.
4. Check harness continuity between IPDM E/R terminal 13 and "fuel level sensor unit and fuel pump" terminal 1, "fuel level sensor unit and fuel pump" terminal 3 and ground.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
  
  Fig 6: Checking Fuel Pump Power Supply And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
5. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 12.

NG: GO TO 11.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E41, C1
- Harness for open or short between fuel pump and IPDM E/R
- Harness for open or short between fuel pump and ground
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK FUEL PUMP
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 13.

NG: Replace "fuel level sensor unit and fuel pump".
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

OK or NG

OK: Replace IPDM E/R.

NG: Repair or replace harness or connectors.