NISSAN TERRANO 2004 Service Repair Manual

SEF720X
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONTD27Ti
CONSULT-II (Cont'd)EC-356
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Introduction
The engine has an ECM to control major systems such as fuel
injection control, fuel injection timing control, glow control system,
etc. The ECM accepts input signals from sensors and instantly
drives electronic fuel injection pump. It is essential that both input
and output signals are correct and stable. It is also important that
there are no problems such as vacuum leaks, with the engine.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or faulty wiring. In this case,
careful checking of suspected circuits may help prevent the unnec-
essary replacement of good parts.
A visual check may not be sufficient to determine the cause of the
problems. An active road test with CONSULT-II or a circuit tester
connected should be performed. Follow the ªWork Flowº on the
next page.
Before undertaking actual checks, take a few minutes to talk with
a customer who approaches with a driveability complaint. The cus-
tomer can supply important information about such problems,
especially intermittent ones. Find out what symptoms are present
and under what conditions they occur. A ªDiagnostic Worksheetº
like the example on the next page should be used.
Start your diagnosis by looking for ªconventionalº problems first.
This will help troubleshoot driveability problems on a vehicle with
an electronically controlled engine.
SEF858S
SEF233G
SEF234G
TROUBLE DIAGNOSESTD27Ti
EC-357
http://vnx.su/

Diagnostic Worksheet
There are many operating conditions that lead to the malfunction
of engine components. A good understanding of such conditions
can make troubleshooting easier and more accurate.
In general, each customer feels differently about a problem. It is
important to fully understand the symptoms or conditions for a
customer complaint.
Utilize a diagnostic worksheet like the one shown below in order to
organize all the information for troubleshooting.
WORKSHEET SAMPLE
Customer name MR/MSModel & Year VIN
Engine # Trans. Mileage
Incident Date Manuf. Date In Service Date
Symptoms l
Startability l
Impossible to start lNo combustion lPartial combustion
l Partial combustion when warming-up engine
l Partial combustion when cooling down engine
l Possible but hard to start lOthers [ ]
l Idling l
No fast idle lUnstable lHigh idle lLow idle
l Others [ ]
l Driveability l
Stumble lSurge lKnock lLack of power
l Others [ ]
l Engine stall l
At the time of start lWhile idling
l While accelerating lWhile decelerating
l Just after stopping lWhile loading
Incident occurrence l
Just after delivery lRecently
l In the morning lAt night lIn the daytime
Frequency lAll the time lUnder certain conditions lSometimes
Weather conditions lNot affected
Weather lFine lRaining lSnowing lOthers [ ]
Temperature lHot lWarm lCool lCold lHumid ÉF
Engine conditions l
Cold lDuring warm-up lAfter warm-up
Engine speed
0 2,000 4,000 6,000 8,000 rpm
Road conditions lIn town lIn suburbs lHighway lOff road (up/down)
Driving conditions l
Not affected
l At starting lWhile idling lAt racing
l While accelerating lWhile cruising
l While decelerating lWhile turning (RH/LH)
Vehicle speed
0 102030 405060708090100mph
Malfunction indicator lamp lTurned on lNot turned on
SEF907L
TROUBLE DIAGNOSESTD27Ti
EC-358
http://vnx.su/

Work Flow
CHECK IN
Listen to customer complaints. (Get symptoms.).................................................STEP I
Check, print out or write down, and erase Diagnostic Trouble Code (DTC).
........................................... STEP II
Symptoms
collected. No symptoms, except MI
lights up, or Malfunction
Code exists at STEP II.
Verify the symptom by driving in the condition the cus-
tomer described.
H
*1
........................................................................\
..................... STEP III
Normal Code
(at STEP II)
Malfunction Code
(at STEP II)
Verify the DTC by performing the ªDTC CONFIRMATION PROCEDUREº.
*1
........................................... STEP IV
EChoose the appropriate action.
Malfunction Code (at STEP II or IV) Normal Code (at both STEP II and IV) ...........................................
*2 STEP V
BASIC INSPECTION
SYMPTOM BASIS (at STEP I or III)
................................................................
E
Perform inspections
according to Symptom
Matrix Chart.
TROUBLE DIAGNOSIS FOR DTC (See TROUBLE DIAGNOSIS Ð INDEX,
EC-313).STEP VI
REPAIR/REPLACE
NGFINAL CHECK
Confirm that the incident is completely fixed by performing BASIC INSPECTION and
DTC CONFIRMATION PROCEDURE (or OVERALL FUNCTION CHECK). Then,
erase the unnecessary (already fixed) DTCs in ECM.
OK ...........................................
STEP VII
CHECK OUT
*1: If the incident cannot be duplicated, refer to GI section.
*2: If the on board diagnostic system cannot be performed, check main power supply and ground circuit. Refer to ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº, EC-375.
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TROUBLE DIAGNOSESTD27Ti
EC-359
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Description for Work Flow
STEPDESCRIPTION
STEP I Get detailed information about the conditions and the environment when the incident/symptom occurred using the
ªDIAGNOSTIC WORKSHEETº as shown on the next page.
STEP II Before confirming the concern, check and write down (print out using CONSULT-II) the Diagnostic Trouble Code
(DTC), then erase the code. (Refer to EC-344). The DTC can be used when duplicating the incident at STEP III &
IV.
Study the relationship between the cause, specified by DTC, and the symptom described by the customer. (The
ªSymptom Matrix Chartº will be useful. Refer to EC-363.)
STEP III Try to confirm the symptom and under what conditions the incident occurs.
The ªDIAGNOSTIC WORK SHEETº is 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 malfunction code is detected, skip STEP IV and perform STEP V.
STEP IV Try to detect the Diagnostic Trouble Code (DTC) by driving in (or performing) the ªDTC CONFIRMATION PROCE-
DUREº. Check and read the DTC by using CONSULT-II.
During the DTC verification, be sure to connect CONSULT-II to the vehicle in DATA MONITOR (AUTO TRIG) mode
and check real time diagnosis results.
In case the ªDTC CONFIRMATION PROCEDUREº is not available, perform the ªOVERALL FUNCTION CHECKº
instead. The DTC cannot be displayed by this check, however, this simplified ªcheckº is an effective alternative.
The ªNGº result of the ªOVERALL FUNCTION CHECKº is the same as the DTC detection.
STEP V Take the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to TROUBLE DIAGNOSIS FOR DTC.
If the normal code is indicated, proceed to the BASIC INSPECTION. Refer to EC-361. Then perform inspections
according to the Symptom Matrix Chart. Refer to EC-363.
STEP VI Identify 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) ªHarness Layoutsº.
Gently shake the related connectors, components or wiring harness with CONSULT-II set in ªDATA MONITOR
(AUTO TRIG)º mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CON-
SULT-II. Refer to EC-369.
The ªDIAGNOSTIC PROCEDUREº 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.
Repair or replace the malfunctioning parts.
STEP VII Once 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 ªDTC CONFIRMATION PROCEDUREº and confirm the normal code (Diagnostic trouble code No. 55)
is detected. If the incident is still detected in the final check, perform STEP VI by using a different method from the
previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already fixed) DTC in ECM. (Refer
to EC-344.)
TROUBLE DIAGNOSESTD27Ti
EC-360
http://vnx.su/

Basic Inspection
Precaution:
Perform Basic Inspection without electrical or mechanical
loads applied;
IHeadlamp switch is OFF,
I Air conditioner switch is OFF,
I Rear defogger switch is OFF,
I Steering wheel is in the straight-ahead position, etc.
BEFORE STARTING
1. Check service records for any recent
repairs that may indicate a related
problem, or the current need for
scheduled maintenance.
2. Open engine hood and check the fol- lowing:
I Harness connectors for improper con-
nections
I Vacuum hoses for splits, kinks, or
improper connections
I Wiring for improper connections,
pinches, or cuts
3.Using priming pump, bleed air from fuel system. Refer to ªFuel Filter Checkº in
MA section.
CONNECT CONSULT-II TO THE
VEHICLE.
Connect ªCONSULT-IIº to the data link
connector for CONSULT-II and select
ªENGINEº from the menu.
DOES ENGINE START?
Ye s
ENo Turn ignition switch to
ªLOCKº position, wait 5
seconds and then start
engine. If engine fails to
start, check diagnostic
trouble code (DTC).
Run engine for 10 minutes.
CHECK IDLE SPEED.
Read engine idle speed in ªDATA
MONITORº mode with CONSULT-II.
725 rpm   50 (in N position)
----------------------------------------------------------------------------------------------------------------------------------- -OR------------------------------------------------------------------------------------------------------------------------------------
Check idle speed using tachometer
tester.
725 rpm   50 (in N position)
(Go to qAon next page.)
SEF142I
NEF463
NRS122
NEF464
SEF817Y
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TROUBLE DIAGNOSESTD27Ti
EC-361
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qA
CHECK INJECTION TIMING.
1. Set No. 1 piston at TDC on its com-pression stroke.
2. Remove injection tubes and air bleeder on the back of injection pump.
3. Set dial gauge so its indicator points to somewhere between 1.0 and 2.0 mm
(0.039 and 0.079 in) on the scale.
4. Turn crankshaft two turns clockwise and check that dial gauge indicates the
same value again.
5. Turn crankshaft counterclockwise about 100 degrees, then turn crankshaft
clockwise slowly, and set dial gauge
indicator to 0 mm at the position it
stops.
6. Turn crankshaft clockwise and set it at TDC using the mark on the crankshaft
pulley.
7. Read plunger lift. Plunger lift:0.36   0.02 mm (0.0142   0.0008
in) at TDC
I When repeating the checking, start
with step 5.
NG
EOK
Bleed air from fuel system.
After this inspection,
unnecessary diagnostic
trouble code No. might be
displayed.
Erase the stored memory
in ECM.
Refer to ªHOW TO ERASE
DTCº (EC-344).
OK
INSPECTION END
Adjusting
1. If plunger lift is not within the specified value, adjust by turning injection pump.
I If indication is smaller than the
specified value, turn pump body
away from engine.
I If indication is larger than the speci-
fied value, turn pump body towards
engine.
2. Tighten injection pump securing bolts and nuts.
Nut:
: 20-25N ×m
(2.0 - 2.5 kg-m, 14 - 18 ft-lb)
Bolt:
: 32-42N ×m
(3.3 - 4.3 kg-m, 24 - 31 ft-lb)
3. Remove dial gauge and install air bleeder with new washer.
4. Install injection tubes. Flare nut:
: 20-25N ×m
(2.0 - 2.5 kg-m, 14 - 18 ft-lb)
5. Bleed air from fuel system.
Refer to ªDRAINING SYSTEMº of
ªENGINE MAINTENANCEº in MA sec-
tion.
EGo to.
NEF468
NEF465
NEF466
EEF160A
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TROUBLE DIAGNOSESTD27Ti
Basic Inspection (Cont'd)
EC-362
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Symptom Matrix Chart
SYSTEM
Ð Basic engine
control systemSYMPTOM
Reference page
Feature of symptom, Check pointHARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE
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 lamp illuminates.
Can be detected by CONSULT-II?
Fuel cut 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 IDLE
DURING DRIVING
WHEN DECELERATING
BLACK SMOKE
WHITE SMOKENew CT/CS
AAAB AC AD AE AF AG AH AJ AK AL AM AP HA
Injec-
tion
timing Advanced
qq
IIqIqqIqEC-361
Retarded qq
IIqIqqIqEC-361
Electric injection
pump mainframe
IIIIqqqqqIqqqIIqqIq qqq Ð*1
Injection nozzle qqqqqqq
Iqq qIIIEC-336 *2
Glow system qq
III IEC-412
Engine body qq
IIqqqIqq qIIqqqIEM-
section *3
EGR system
II IEC-454
Air cleaner and
ducts
II IqMA-
section *4
I; High Possibility Item
q ; Low Possibility Item
*1: Insufficient or excess amount. Governor malfunction may be the cause.
*2: Depends on open-valve pressure and spray pattern.
*3: Caused mainly by insufficient compression pressure.
*4: Symptom varies depending on off-position of air duct, etc.
TROUBLE DIAGNOSESTD27Ti
EC-363
http://vnx.su/

SYSTEM Ð Engine control system
Malfunction
SYMPTOM
Reference page
Feature of symptom
Check point
HARD/NO START/
RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE
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 lamp illuminates.
Can be detected by CONSULT-II?
Fuel cut 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 IDLE
DURING DRIVING
WHEN DECELERATINGBLACK SMOKE
WHITE SMOKE
New CT/CS
AAAB AC AD AE AF AG AH AJ AK AL AM AP HA
Mass air flow sensor circuit open, ground short qqq q
EC-379
short qqq
Engine coolant temperature sensor
circuit open, short qqq qqq qq EC-384Compensation according to
engine coolant temperature does
not function.
Vehicle speed sensor circuit open, short qqEC-420
Control sleeve position sensor circuit open, short qqq qqqEC-437
Injection timing control valve circuit open, short qqq
EC-403Injection timing cannot be con-
trolled.
ground short qq
Accelerator switch (F/C) circuit open, short qqq
EC-388
ground short qq
Needle lift sensor circuit open, short qqqEC-450
Fuel cut solenoid valve circuit open, ground short q qqq q
EC-399
short qqqEngine runs on after turning igni-
tion switch OFF.
Fuel temperature sensor circuit open, shortqq qq qq qq q q EC-395Compensation for amount of fuel
injected according to fuel tem-
perature does not function.
Accelerator position sensor circuit open, short qqq qqEC-388
Crankshaft position sensor (TDC) cir-
cuit open, short
qq qq
EC-408
noise qqq qq
TROUBLE DIAGNOSESTD27Ti
Symptom Matrix Chart (Cont'd)
EC-364
http://vnx.su/

SYSTEM Ð Engine control systemMalfunction
SYMPTOM
Reference page
Feature of symptomCheck point
HARD/NO START/
RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE
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 lamp illuminates.
Can be detected by CONSULT-II?
Fuel cut 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 IDLE
DURING DRIVING
WHEN DECELERATINGBLACK SMOKE
WHITE SMOKE
New CT/CS
AAAB AC AD AE AF AG AH AJ AK AL AM AP HA
Start signal circuit open, shortqq EC-472 Start control does not function.
Air conditioner switch circuit open, ground short
EC-463Air Conditioner does not stop
operating.
short Air Conditioner does not work.
Ignition switch circuit open q qqq
EC-472
short Engine does not stop.
Power supply for ECM circuit open qqq
EC-375
short qq
Throttle control solenoid valve circuit open, short EC-458Does not operate.
ground short qq q Does not stop operating.
EGRC-solenoid valve A, B circuit open, short EC-454
ground short qDoes not stop operating.
Glow relay circuit open qqqq q
EC-412Glow lamp does not turn on.
short Glow lamp does not turn off.
ECM relay (Self-shut off) circuit open qqq q
EC-469
short qqGround short makes engine
unable to stop.
Air conditioner relay circuit open EC-463Air conditioner does not operate.
short Air conditioner does not stop
operating.
ECM, Connector circuit open, short qqqqqqqqqqqqqq qqqqqqqqqqq EC-369, 475
TROUBLE DIAGNOSESTD27Ti
Symptom Matrix Chart (Cont'd)
EC-365
http://vnx.su/