NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS
EC-41
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13.CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
Without CONSULT-II
Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> 1. Replace fuel injector.
2. GO TO 3. M/T: 750±25 rpm (in Neutral position)
A/T: 750±25 rpm (in P or N position)
M/T: 750±25 rpm (in Neutral position)
A/T: 750±25 rpm (in P or N position)SEF817Y

EC-42
TROUBLE DIAGNOSIS
Symptom Matrix Chart
EBS01KCW
SYSTEM — Basic engine control systemSYMPTOM
Reference
pageHARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE NO START (with first firing)
NO START (without first firing)
HARD TO START WHEN ENGINE IS COLD
HARD TO START WHEN ENGINE IS HOT
AT I D L E
DURING DRIVING
WHEN DECELERATING
Warranty symptom code AA AB AC AD AE AF
Fuelpump 55555555 55 5 —
Fuelinjector 3333333334433EC-125
Glow control system 1 1 1 1 1EC-295
Engine body 3 3 3 3 3 3 3 3 4 4 3EM-106
EGR system33EC-302
Air cleaner and duct33EM-15
Fuel rail pressure relief valve 3 3 3 3 3 3 3 3 3 3 3EC-88
ENGINE CONTROL
Fuelpumpcircuit 44444444 44 4EC-217
Fuelinjectorcircuit 1111111111111EC-125
Fuel injector adjustment value 1 1 1 1EC-25
Mass air flow sensor circuit 1 1 1EC-92
Engine coolant temperature circuit 1 1 1 1EC-103
Vehicle speed signal circuit1LAN-30
Accelerator pedal position sensor circuit 1 1 1EC-108
,
EC-142
,
EC-275
Fuel rail pressure sensor circuitEC-118

TROUBLE DIAGNOSIS
EC-43
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1 - 5: The numbers refer to the order of inspection.
(continued on next page)
ENGINE CONTROL
Crankshaftpositionsensorcircuit 1111111111EC-159
Camshaft position sensor circuit 3 3EC-171
Turbocharger boost sensor circuit 1 1 1EC-153
Turbocharger boost control solenoid
valve circuit111EC-309
Intake air control valve control solenoid
valve circuit11111111EC-314
Start signal circuit 1 1 1 1 1 1 1 1 1EC-348
Ignition switch circuit 1 1 1 1EC-71
Heat up switch circuit1EC-319
Power supply for ECM circuit 1 1 1 1EC-71
Cooling fan relay circuitEC-132
EGR volume control valve circuit 1 1 1EC-302
Glow relay circuit 1 1 1EC-295
ECM relay (Self shut-off) circuit 1 1 1 1EC-232
ECM 2222222222222EC-213
,
EC-215
,
EC-269
NATS (Nissan Anti-theft System) 1EC-28
SYSTEM — Basic engine control systemSYMPTOM
Reference
pageHARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE NO START (with first firing)
NO START (without first firing)
HARD TO START WHEN ENGINE IS COLD
HARD TO START WHEN ENGINE IS HOT
AT I D L E
DURING DRIVING
WHEN DECELERATING
Warranty symptom code AA AB AC AD AE AF

EC-44
TROUBLE DIAGNOSIS
SYSTEM — Basic engine control systemSYMPTOM
Reference
page
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE)
Malfunction indicator illuminates.
Can be detected by CONSULT-II?BLACK SMOKE
WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA
Fuel pump 5 5 5 5 1 1 —
Fuel injector 3 3 3 4 3 3 1 1EC-125
Glow control system1EC-295
Engine body 3 3 3 3 1 3EM-106
EGR system3EC-302
Air cleaner and duct3EM-15
Fuel rail pressure relief valve 3 3 3 3EC-88
ENGINE CONTROL
Fuel pump circuit 4 4 4 4 1 1EC-217
Fuel injector circuit 1 1 1 1 1 1 1 1EC-125
Fuel injector adjustment value 1 1 1 1 1 1EC-25
Mass air flow sensor circuit 1 1 1EC-92
Engine coolant temperature circuit 1 1 1 1 1EC-103
Vehicle speed signal circuit11LAN-30
Accelerator pedal position sensor circuit 1 1 1EC-108
,
EC-142
,
EC-275
Fuel rail pressure sensor circuit11EC-118

TROUBLE DIAGNOSIS
EC-45
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1 - 5: The numbers refer to the order of inspection.
ENGINE CONTROL
Crankshaft position sensor circuit 1 1 1 1EC-159
Camshaft position sensor circuit11EC-171
Turbocharger boost sensor circuit 1 1EC-153
Turbocharger boost control solenoid valve cir-
cuit11EC-309
Start signal circuitEC-348
Ignition switch circuitEC-71
Heat up switch circuitEC-319
Power supply for ECM circuit11EC-71
Cooling fan relay circuit 2EC-132
EGR volume control valve circuit 1EC-302
Glow relay circuit1EC-295
ECM relay (Self shut-off) circuit1EC-232
ECM 22 22222 2222EC-213
,
EC-215
,
EC-269
NATS (Nissan Anti-theft System)1EC-28
SYSTEM — Basic engine control systemSYMPTOM
Reference
page
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE)
Malfunction indicator illuminates.
Can be detected by CONSULT-II?BLACK SMOKE
WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA

EC-46
TROUBLE DIAGNOSIS
Engine Control Component Parts Location
EBS01KCX
1. IPDM E/R 2. ECM 3. Glow relay
4. Turbocharger boost sensor 5. Refrigerant pressure sensor 6. Engine coolant temperature sensor
7. Fuel pump 8. Cooling fan motor 9. Intake air control valve actuator
10. Turbocharger boost control solenoid
valve11. Mass air flow sensor 12. Turbocharger boost control actuator
13. Camshaft position sensor 14. Glow plug 15. Fuel injector
16. Fuel rail pressure sensor 17. Intake air control valve control
solenoid valve18. EGR volume control valve
MBIB1198E

TROUBLE DIAGNOSIS
EC-47
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: Vehicle front
1. Fuel pump temperature sensor 2. Fuel pump 3. Fuel rail pressure relief valve
4. Fuel rail 5. Engine coolant temperature sensor 6. EGR volume control valve
7. Fuel rail pressure sensor 8. Camshaft position sensor 9. Refrigerant pressure sensor
MBIB1388E

EC-48
TROUBLE DIAGNOSIS
: Vehicle front
1. Glow relay 2. ECM 3. Crankshaft position sensor
(View from under the vehicle)
4. Turbocharger boost sensor
(View with front grille removed)5. ASCD brake switch 6. Stop lamp switch
7. Accelerator pedal position sensor
MBIB1249E

TROUBLE DIAGNOSIS
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: Vehicle front
1. Turbocharger boost control solenoid
valve (View with air cleaner upper
case removed)2. Turbocharger boost control actuator 3. PNP switch (M/T)
(View from under the vehicle)
4. Intake air control valve control sole-
noid valve5. ASCD steering switch 6. RESUME/ACCELERATE switch
7. SET/COAST switch 8. MAIN switch 9. CANCEL switch
MBIB1289E

EC-50
TROUBLE DIAGNOSIS
Circuit Diagram
EBS01KCY
MBWA1032E