Nissan Murano: Symptom Diagnosis / Normal Operating Condition
Description
FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)
If the engine speed is above 2,000 rpm under no load (for example, the selector lever position is P or N and engine speed is over 2,000 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,100 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, System Description.
Symptom Table
SYSTEM — BASIC ENGINE CONTROL SYSTEM SYMPTOM Reference page
HARD/NO START/RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel
Fuel pump circuit
1
1
2
3
2
2
2
3
2
Diagnosis Procedure
Fuel pressure regulator system
3
3
4
4
4
4
4
4
4
4
Work Procedure
Fuel injector circuit
1
1
2
3
2
2
2
2
Component Function Check
Evaporative emission system
3
3
4
4
4
4
4
4
4
4
System Description
Air
Positive crankcase ventilation system
3
3
4
4
4
4
4
4
4
4
1
Positive Crankcase Ventilation (PCV)
Incorrect idle speed adjustment
1
1
1
1
1
Work Procedure
Electric throttle control actuator
1
1
2
3
3
2
2
2
2
2
2
DTC Description, DTC Description
Ignition
Incorrect ignition timing adjustment
3
3
1
1
1
1
1
1
Work Procedure
Ignition circuit
1
1
2
2
2
2
2
2
Component Function Check
Power supply and ground circuit
2
2
3
3
3
3
3
2
3
Diagnosis Procedure
Mass air flow sensor circuit
1
1
2
2
2
2
2
2
DTC Description, DTC Description
Engine coolant temperature sensor circuit
3
3
3
DTC Description, DTC Description
Air fuel ratio (A/F) sensor 1 circuit
DTC Description, DTC Description, DTC Description, DTC Description, DTC Description
Throttle position sensor circuit
2
2
DTC Description, DTC Description, DTC Description, DTC Description, DTC Description
Accelerator pedal position sensor circuit
3
2
1
DTC Description, DTC Description, DTC Description, DTC Description
Knock sensor circuit
2
3
DTC Description
Engine oil temperature sensor
4
2
3
DTC Description, DTC Description
Crankshaft position sensor (POS) circuit
2
2
DTC Description
Camshaft position sensor (PHASE) circuit
3
2
DTC Description
Nissan Murano Vehicle speed signal circuit
2
3
3
3
DTC Description
ECM
2
2
3
3
3
3
3
3
3
3
3
DTC Description, DTC Description
Intake valve timing control solenoid valve circuit
3
2
1
3
2
2
3
3
DTC Description
Intake valve timing intermediate lock control solenoid valve circuit
DTC Description
Exhaust valve timing control solenoid valve
3
2
1
3
2
2
3
3
DTC Description
PNP signal circuit
3
3
3
3
3
DTC Description
VIAS control solenoid valve 1 circuit
1
DTC Description
VIAS control solenoid valve 2 circuit
1
DTC Description
Refrigerant pressure sensor circuit
2
3
3
4
Component Function Check
Electrical load signal circuit
3
Component Function Check
Air conditioner circuit
2
2
3
3
3
3
3
3
3
3
2
Work Flow
ABS actuator and electric unit (control unit)
4
Work Flow
1 - 6: The numbers refer to the order of inspection...
Other information:
System Description
SYSTEM DIAGRAMSYSTEM DESCRIPTION
The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pressure by the oil pressure warning lamp before the engine becomes damaged.
When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits an oil pressure warning lamp signal to the combination meter...
DTC Description
Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in N (Neutral) or P (Park) position.DTC DETECTION LOGICNOTE:
If DTC B2560 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000...