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DTC Inspection Priority ChartEBS01KCU
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-79, "
DTC U1000 CAN COMMUNICATION LINE".
Priority Detected items (DTC)
1
lU1000 CAN communication line
lP0016 Crankshaft position - camshaft position correlation
lP0102 P0103 Mass air flow sensor
lP0112 P0113 Intake air temperature sensor
lP0117 P0118 Engine coolant temperature sensor
lP0122 P0123 P0222 P0223 P2135 Accelerator pedal position sensor
lP0182 P0183 Fuel pump temperature sensor
lP0192 P0193 Fuel rail pressure sensor
lP0237 P0238 Turbocharger boost sensor
lP0335 P0336 Crankshaft position sensor
lP0340 P0341 Camshaft position sensor
lP0563 Battery voltage
lP0605 P0606 P1616 ECM
lP0642 P0643 P0652 P0653 Sensor power supply
lP1610 - P1615 NATS
lP1622 P1623 Injector adjustment value
lP2228 P2229 Barometric pressure sensor
2
lP0089 P0628 P0629 P1272 - P1275 Fuel pump
lP0200 - P0204 P1268 - P1271 P2146 - P2149 Fuel injector
lP0686 ECM relay
3
lP0088 P0093 Fuel system
lP0217 Engine over temperature (OVERHEAT)
lP0234 Turbocharger system
lP0501 P0502 P0503 ASCD vehicle speed sensor
lP0504 ASCD brake switch
lP0580 P0581 ASCD steering switch
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EC-38
TROUBLE DIAGNOSIS
Basic Inspection
EBS01KCV
Precaution:
Perform Basic Inspection without electrical or mechanical loads applied;
lHeadlamp switch is OFF.
lOn vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
lAir conditioner switch is OFF.
lHeater fan switch is OFF.
lRear defogger switch is OFF.
lHeat up switch is OFF.
lSteering wheel is in the straight-ahead position, etc.
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related incident.
2. Check the current need for scheduled maintenance, especially for fuel filter and air cleaner filter. Refer to
MA-8, "
PERIODIC MAINTENANCE".
3. Open engine hood and check the following:
–Harness connectors for improper connections
–Vacuum hoses for splits, kinks, or improper connections
–Wiring for improper connections, pinches, or cuts
4. Start engine and warm it up to the normal operating tempera-
ture.
>> GO TO 2.
2.PREPARATION FOR CHECKING IDLE SPEED
With CONSULT-II
Connect CONSULT-II to the data link connector.
Without CONSULT-II
Install diesel tacho tester to the vehicle.
>> GO TO 3.
SEF142I
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TROUBLE DIAGNOSIS
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3.CHECK IDLE SPEED
With CONSULT-II
1. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
2. Read idle speed.
Without CONSULT-II
Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4.CHECK FOR INTAKE AIR LEAK
1. Stop engine.
2. Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace.
5.BLEED AIR FROM FUEL SYSTEM
Use priming pump to bleed air from fuel system. Refer toEC-23, "
AIR BLEEDING".
>> GO TO 6.
6.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 >> GO TO 7.
7.DRAIN WATER FROM FUEL FILTER
1. Stop engine.
2. Drain water from fuel filter. Refer toEC-23, "
WATER DRAINING".
>> GO TO 8. 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
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
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EC-40
TROUBLE DIAGNOSIS
8.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 >> GO TO 9.
9.CHECK AIR CLEANER FILTER
1. Stop engine.
2. Check air cleaner filter for clogging or breaks.
OK or NG
OK >> GO TO 10.
NG >> Replace air cleaner filter.
10.CHECK BATTERY VOLTAGE
Check battery voltage.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
11 .CHECK BATTERY
Refer toSC-5, "
BATTERY".
OK or NG
OK >> Check charging system. Refer toSC-14, "CHARGING SYSTEM".
NG >> Repair or replace.
12.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer toEM-92, "
CHECKING COMPRESSION PRESSURE".
OK or NG
OK >> GO TO 13.
NG >> Follow the instruction of “CHECKING COMPRESSION PRESSURE”.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
Voltage: More than 12.13V
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TROUBLE DIAGNOSIS
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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
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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
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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
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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