TROUBLE DIAGNOSIS
EC-1009
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Description for Work Flow
DIAGNOSTIC WORK SHEET
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about an incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one shown below in order to
organize all the information for troubleshooting.
STEP DESCRIPTION
STEP IGet detailed information about the conditions and the environment when the incident/symptom occurred using the
EC-1009, "
DIAGNOSTIC WORK SHEET" .
STEP IIBefore confirming the concern, check and write down (print out using CONSULT-II or GST) the (1st/2nd trip) DTC and
the freeze frame data (When 1st/2nd trip DTC is detected, Freeze Frame Data is not recorded.), then erase the DTC
and the data. (Refer to EC-999
.) The (1st/2nd trip) DTC and the freeze frame data can be used when duplicating the
incident at STEP III & IV.
If the incident cannot be verified, perform EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
Study the relationship between the cause, specified by (1st/2nd trip) DTC, and the symptom described by the cus-
tomer. (The Symptom Matrix Chart will be useful. See EC-1016
.)
Also check related service bulletins for information.
STEP IIITry to confirm the symptom and under what conditions the incident occurs.
The DIAGNOSTIC WORK SHEET and the freeze frame data are useful to verify the incident. Connect CONSULT-II
to the vehicle in “DATA MONITOR (AUTO TRIG)” mode and check real time diagnosis results.
If the incident cannot be verified, perform EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
If the malfunction code is detected, skip STEP IV and perform STEP V.
STEP IVTry to detect the (1st/2nd trip) DTC by driving in (or performing) the DTC Confirmation Procedure. Check and read
the (1st/2nd trip) DTC and freeze frame data by using CONSULT-II or GST.
During the (1st/2nd trip) DTC verification, be sure to connect CONSULT-II to the vehicle in “DATA MONITOR (AUTO
TRIG)” mode and check real time diagnosis results.
If the incident cannot be verified, perform EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
In case the DTC Confirmation Procedure is not available, perform the Overall Function Check instead. The (1st/2nd
trip) DTC cannot be displayed by this check, however, this simplified check is an effective alternative.
The NG result of the Overall Function Check is the same as the (1st/2nd trip) DTC detection.
STEP VTake the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to TROUBLE DIAGNOSIS FOR DTC PXXXX.
If the normal code is indicated, proceed to the BASIC INSPECTION. (Refer to EC-1012
.)Then perform inspections
according to the Symptom Matrix Chart. (Refer to EC-1016
.)
STEP VIIdentify where to begin diagnosis based on the relationship study between symptom and possible causes. Inspect the
system for mechanical binding, loose connectors or wiring damage using (tracing) Harness Layouts.
Gently shake the related connectors, components or wiring harness with CONSULT-II set in “DATA MONITOR
(AUTO TRIG)” mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CONSULT-II.
Refer to EC-1027
, EC-1042 .
The Diagnostic Procedure in EC section contains a description based on open circuit inspection. A short circuit
inspection is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in
GI-23, "
How to Perform Efficient Diagnosis for an Electrical Incident" .
Repair or replace the malfunction parts.
If malfunctioning part cannot be detected, perform EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT" .
STEP VIIOnce you have repaired the circuit or replaced a component, you need to run the engine in the same conditions and
circumstances which resulted in the customer's initial complaint.
Perform the DTC Confirmation Procedure and confirm the normal code [DTC No. P0000] is detected. If the incident is
still detected in the final check, perform STEP VI by using a method different from the previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already fixed) (1st/2nd trip) DTC in
ECM. (Refer to EC-999, "
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .)
SEF907L
TROUBLE DIAGNOSIS
EC-1011
[YD (WITH EURO-OBD)]
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Priority Detected items (DTC)
1
U1000 CAN communication line
P0016 Crankshaft position - camshaft position correlation
P0101 P0102 P0103 Mass air flow sensor
P0112 P0113 Intake air temperature sensor
P0117 P0118 Engine coolant temperature sensor
P0122 P0123 P0222 P0223 P2135 Accelerator pedal position sensor
P0182 P0183 Fuel pump temperature sensor
P0192 P0193 Fuel rail pressure sensor
P0237 P0238 Turbocharger boost sensor
P0335 P0336 Crankshaft position sensor
P0340 P0341 Camshaft position sensor
P0563 Battery voltage
P0605 P0606 ECM
P0642 P0643 P0652 P0653 Sensor power supply
P1260 - P1267 Fuel injector adjustment resistor
P1610 - P1617 NATS
P2228 P2229 Barometric pressure sensor
2
P0045 Turbocharger boost control solenoid valve
P0089 P0628 P0629 P1272 - P1275 Fuel pump
P0200 - P0204 P1268 - P1271 P2146 - P2149 Fuel injector
P0380 Glow relay
P0404 EGR volume control valve
P0686 ECM relay
P1212 TCS communication line
3
P0088 P0093 Fuel system
P0217 Engine over temperature (OVERHEAT)
P0234 Turbocharger system
P0401 EGR function
P0501 P0502 P0503 ASCD vehicle speed sensor
P0504 ASCD brake switch
P0580 P0581 ASCD steering switch
P1211 TCS control unit
TROUBLE DIAGNOSIS
EC-1013
[YD (WITH EURO-OBD)]
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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
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
1. Stop engine.
2. Use priming pump to bleed air from fuel system. Refer to EC-994, "
AIR BLEEDING" .
>> GO TO 6. 725±25 rpm
SEF817Y
725±25 rpm
EC-1016
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
Symptom Matrix ChartEBS0117B
SYSTEM — Basic engine control systemSYMPTOM
Reference page
HARD/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
Fuel pump 55555555 55 5 —
Fuel injector 3333333334433E C - 111 8
Glow control system 1 1 1 1 1EC-1305
Engine body 3 3 3 3 3 3 3 3 4 4 3EM-222
Fuel transport pump 2 2 2EC-1331
EGR system33EC-1186
Air cleaner and duct33EM-142
Fuel rail pressure relief valve 3 3 3 3 3 3 3 3 3 3 3EC-1071
ENGINE CONTROLFuel pump circuit 4 4 4 4 4 4 4 4 4 4 4EC-1231
Fuel injector circuit 1111111111111E C - 111 8
Mass air flow sensor circuit 1 1 1EC-1083
Engine coolant temperature circuit 1 1 1 1EC-1093
Vehicle speed signal circuit1LAN-4
Accelerator pedal position sensor circuit 1 1 1EC-1099
Fuel rail pressure sensor circuitE C - 111 0
TROUBLE DIAGNOSIS
EC-1017
[YD (WITH EURO-OBD)]
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1 - 5: The numbers refer to the order of inspection.
(continued on next page)
ENGINE CONTROL
Crankshaft position sensor circuit 1 1 1 1 1 1 1 1 1 1EC-1157
Camshaft position sensor circuit 3 3EC-1169
Turbocharger boost sensor circuit 1 1 1EC-1151
Turbocharger boost control solenoid
valve circuit111EC-1061
Start signal circuit 1 1 1 1 1 1 1 1 1EC-1345
Ignition switch circuit 1 1 1 1EC-1046
Power supply for ECM circuit 1 1 1 1EC-1046
Cooling fan relay circuitEC-1124
EGR volume control valve circuit 1 1 1EC-1193
Glow relay circuit 1 1 1 1EC-1182
ECM relay (Self-shutoff) circuit 1 1 1 1EC-1245
ECM, connector circuit 2222222222222EC-1227,
EC-1303
NATS (Nissan Anti-theft System) 1EC-1001
SYSTEM — Basic engine control systemSYMPTOM
Reference page
HARD/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-1018
[YD (WITH EURO-OBD)]
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 4 4 1 1E C - 111 8
Glow control system1EC-1305
Engine body 3 3 3 3 1 3EM-222
Fuel transport pumpEC-1331
EGR system3EC-1186
Air cleaner and duct3EM-142
Fuel rail pressure relief valve 3 3 3 3 1 1EC-1071
ENGINE CONTROLFuel pump circuit 4 4 4 4 1 1EC-1270
Fuel injector circuit 1 1 1 1 1 1 1 1E C - 111 8
Mass air flow sensor circuit 1 1 1EC-1083
Engine coolant temperature circuit 1 1 1 1 1EC-1093
Vehicle speed signal circuit11LAN-4
Accelerator pedal position sensor circuit 1 1 1EC-1099
Fuel rail pressure sensor circuit11E C - 111 0
TROUBLE DIAGNOSIS
EC-1019
[YD (WITH EURO-OBD)]
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1 - 5: The numbers refer to the order of inspection.
ENGINE CONTROLCrankshaft position sensor circuit 1 1 1 1EC-1157
Camshaft position sensor circuit11EC-1169
Turbocharger boost sensor circuit 1 1EC-1151
Turbocharger boost control solenoid valve cir-
cuit11EC-1061
Start signal circuitEC-1345
Ignition switch circuitEC-1046
Power supply for ECM circuit11EC-1046
Cooling fan relay circuit 2EC-1124
EGR volume control valve circuit 1EC-1193
Glow relay circuit1EC-1182
ECM relay (Self-shutoff) circuit1EC-1245
ECM, connector circuit 2 2 2 2 2 2 2 2 2 2 2EC-1227,EC-
1303
NATS (Nissan Anti-theft System)1EC-1001
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-1030
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
36 LG Cooling fan relay (Low)[Engine is running]
Cooling fan is not operating
Cooling fan is operating at high speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Cooling fan is operating at low speedApproximately 0.1V
37 W/R Glow relay Refer to EC-1305, "
GLOW CONTROL SYSTEM" .
39 B/OR Fuel transport pump relay[Engine is running]
Some fuel is in the fuel tankApproximately 0V
[Engine is running]
No fuel is in the fuel tankBATTERY VOLTAGE
(11 - 14V)
40
41
42
43G/R
GY/L
G/R
GY/LFuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 9V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V
44 L/WCrankshaft position sen-
sor power supply[Ignition switch ON]Approximately 5.3V
45 G/ORCamshaft position sensor
power supply[Ignition switch ON]Approximately 5.3V
46 L Crankshaft position sensor[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 6V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 6V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0881E
MBIB0882E
MBIB0879E
MBIB0880E