2002 NISSAN TERRANO light

4. Clean spray hole of nozzle body by using Tool.
To prevent spray hole from canting, always clean it by start-
ing with inner side and working towards the outside.
5. Decarbonate nozzle needle tip by using Tool.
6. Check needle sink.
(1) Pull needle about halfway out from body and then release it.
(2) Needle should sink into body very smoothly from just its own
weight.
(3) Repeat this test and rotate needle slightly each time.
If needle fails to sink smoothly from any position, replace both
needle and body as a unit.
Assembly (No.2-4nozzle)
Assembly is in the reverse order of disassembly.
Holder to nozzle nut:
:29-49N×m (3.0 - 5.0 kg-m, 22 - 36 ft-lb)
SEF833
SEF834
SEF835
SEF967
INJECTION NOZZLETD27Ti
Cleaning (No.2-4nozzle) (Cont'd)
EC-315

DTC and MI Detection Logic
When a malfunction is detected for the first time, the malfunction (DTC) is stored in the ECM memory.
The MI will light up each time the ECM detects a malfunction. However, if the same malfunction is experienced
in two consecutive driving patterns and the engine is still running, the MI will stay lit up. For a description of
diagnostic items causing the MI to light up, refer to ªTROUBLE DIAGNOSIS Ð INDEXº, EC-293.
Diagnostic Trouble Code (DTC)
HOW TO READ DTC
The DTC can be read by the following methods.
Without CONSULT-II
ECM displays the DTC by a set of four digit numbers with MI illumination in the diagnostic test mode II (Self-
diagnostic results). Example: 0102, 0103, 0104, etc.
With CONSULT-II
CONSULT-II displays the DTC in ªSELF-DIAG RESULTSº mode. Examples: P0100, P0115, P0500, etc.
These DTCs are prescribed by ISO15031-6.
(CONSULT-II also displays the malfunctioning component or system.)
IOutput of the trouble code means that the indicated circuit has a malfunction. However, in the Mode
II it does not indicate whether the malfunction is still occurring or occurred in the past and returned
to normal.
CONSULT-II can identify them. Therefore, using CONSULT-II (if available) is recommended.
HOW TO ERASE DTC
How to Erase DTC (
With CONSULT-II)
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Touch ªENGINEº.
3. Touch ªSELF-DIAG RESULTSº.
4. Touch ªERASEº. (The DTC in the ECM will be erased.)
The emission related diagnostic information in the ECM can be erased by selecting ªERASEº in the ªSELF-
DIAG RESULTSº mode with CONSULT-II.
SEF246Z
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONTD27Ti
EC-321

How to Erase DTC (Without CONSULT-II)
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Change the diagnostic test mode from Mode II to Mode I by using the data link connector. (See EC-323.)
The emission related diagnostic information in the ECM can be erased by changing the diagnostic test mode.
IIf the battery is disconnected, the emission-related diagnostic information will be lost after approx.
24 hours.
IErasing the emission-related diagnostic information using CONSULT-II is easier and quicker than
switching the diagnostic test mode using the data link connector.
Malfunction Indicator (MI)
1. The malfunction indicator will light up when the ignition switch
is turned ON without the engine running. This is a bulb check.
IIf the malfunction indicator does not light up, refer to EL sec-
tion (ªWARNING LAMPS/WIRING DIAGRAMº) or see MI &
DATA LINK CONNECTORS.
2. When the engine is started, the malfunction indicator should go
off.
If the lamp remains on, the on board diagnostic system has
detected an engine system malfunction.
If MI illuminates or flashes irregularly after starting engine,
water may have accumulated in fuel filter. Drain water from
fuel filter.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following three functions.
Diagnostic
Test ModeKEY and ENG.
StatusFunction Explanation of Function
Mode IIgnition switch in
ON position
Engine stoppedBULB CHECKThis function checks the MI bulb for damage (blown, open
circuit, etc.).
If the MI does not come on, check MI circuit. (See EC-452.)
Engine running
MALFUNCTION
WARNINGThis is a usual driving condition. When ECM detects a
malfunction, the MI will light up to inform the driver that a mal-
function has been detected.
Mode IIIgnition switch in
ON position
Engine stopped
SELF-DIAGNOSTIC
RESULTSThis function allows DTCs to be read.
SAT652J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONTD27Ti
Diagnostic Trouble Code (DTC) (Cont'd)
EC-322

RELATIONSHIP BETWEEN MI, DTC, CONSULT-II AND DRIVING PATTERNS
*1: When a malfunction is detected, MI
will light up.
*2: When the same malfunction is
detected in two consecutive driving
patterns, MI will stay lit up.
*3: MI will go off after vehicle is driven
three times without any malfunc-
tions.*4: When a malfunction is detected for
the first time, the DTC will be
stored in ECM.
*5: The DTC will not be displayed any
longer after vehicle is driven 40
times without the same malfunc-
tion. (The DTC still remain in
ECM.)*6: Other screens except SELF-DIAG-
NOSTIC RESULTS & DATA MONI-
TOR (AUTO TRIG) cannot display
the malfunction. DATA MONITOR
(AUTO TRIG) can display the mal-
function at the moment it is
detected.
SEF879Y
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONTD27Ti
Malfunction Indicator (MI) (Cont'd)
EC-326

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)...........................................
*2STEP 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-293).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-352.
H
H
H
H
H
H
H
H
H
H
H
TROUBLE DIAGNOSESTD27Ti
EC-336

CONSULT-II Reference Value in Data Monitor
Mode
Remarks:
ISpecification data are reference values.
ISpecification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
MONITOR ITEM CONDITION SPECIFICATION
CKPS×RPM (TDC)
ITachometer: Connect
IRun engine and compare tachometer indication with the CONSULT-II value.Almost the same speed as the CON-
SULT-II value. CKPS×RPM (REF)
CMPS×RPM-PUMP
COOLAN TEMP/SIEngine: After warming up More than 70ÉC (158ÉF)
VHCL SPEED SEITurn drive wheels and compare speedometer indication with the CONSULT-II
valueAlmost the same speed as
the CONSULT-II value
FUEL TEMP SENIEngine: After warming up More than 40ÉC (104ÉF)
ACCEL POS SENIIgnition switch: ON
(Engine stopped)Accelerator pedal: release 0.40 - 0.60V
Accelerator pedal: depress Approx. 4.0V
FULL ACCEL SWIIgnition switch: ON
(Engine stopped)Accelerator pedal: depress ON
Except above OFF
ACCEL SW (FC)IIgnition switch: ON
(Engine stopped)Accelerator pedal: release CLOSE
Accelerator pedal: slightly open OPEN
OFF ACCEL SWIIgnition switch: ON
(Engine stopped)Accelerator pedal: release ON
Accelerator pedal: slightly open OFF
C/SLEEV POS/SIEngine: After warming up, idle the engine 1.0 - 3.5V
BATTERY VOLTIIgnition switch: ON (Engine stopped) 11 - 14V
P/N POSI SWIIgnition switch: ONShift lever: Neutral ON
Except above OFF
START SIGNALIIgnition switch: ON,START,ON OFF,ON,OFF
AIR COND SIGIEngine: After warming up, idle the
engineAir Conditioner switch: ªOFFº OFF
Air Conditioner switch: ªONº
(Compressor operates.)ON
IGN SWIIgnition switch: ON,OFF ON,OFF
MAS AIR/FL SEIEngine: After warming up
IAir Conditioner switch: ªOFFº
IShift lever: ªNº
INo-loadIdle 1.5 - 2.1V
2,000 rpm 2.3 - 2.9V
ACT INJ TIMGIEngine: After warming up
IAir Conditioner switch: ªOFFº
IShift lever: ªNº
INo-loadIdle þ5.0É to þ9.0É
2,000 rpm þ5.0É to þ18.0É
DECELER F/CUTIEngine: After warming upIdle OFF
When accelerator pedal is released
quickly with engine speed at 3,000 rpm
or more.ON
FUEL CUT S/VIIgnition switch: ON,OFF ON,OFF
AIR COND RLYIAir Conditioner switch: OFF,ON OFF,ON
GLOW RLYIRefer to EC-389.
TROUBLE DIAGNOSESTD27Ti
EC-343

Component Description
Malfunction Indicator (MI) is located on the instrument panel. When the ignition switch is turned ON without
engine running, MI will light up. This is a bulb check. When the engine is started, MI should go off. If MI remains
on, the on board diagnostic system has detected an engine system malfunction.
On Board Diagnosis Logic
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0650
0907Malfunction indicator (MI) control cir-
cuitIAn excessively high voltage is sent
to ECM through the MI circuit
under the condition that calls for MI
light up.
IAn excessively low voltage is sent
to ECM through the MI circuit
under the condition that calls for MI
not to light up.IHarness or connectors
(MI circuit is open or shorted.)
IMI
DTC Confirmation Procedure
NOTE:
If ªDTC Confirmation Procedureº has been previously
conducted, always turn ignition switch ªOFFº and wait at least
10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªDATA MONITORº mode with CONSULT-II.
3. Start engine and let it idle for 2 second.
WITHOUT CONSULT-II
1. Turn ignition switch ªONº.
2. Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
3. Start engine and let it idle for 2 second.
4. Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
SEF817Y
DTC P0650 MITD27Ti
EC-404

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:
IRead GI section, ªHOW TO READ WIRING DIAGRAMSº.
CONTENTS
HARNESS CONNECTOR................................................3
Description ...................................................................3
STANDARDIZED RELAYS..............................................4
Description ...................................................................4
POWER SUPPLY ROUTING...........................................6
Schematic ....................................................................6
Wiring Diagram - POWER - ........................................8
Fuse ...........................................................................17
Fusible Link................................................................17
Circuit Breaker Inspection .........................................17
GROUND DISTRIBUTION.............................................18
COMBINATION SWITCH...............................................23
Check .........................................................................23
Replacement ..............................................................24
STEERING SWITCH......................................................25
Check .........................................................................25
HEADLAMP - Without Daytime Light System -.........26
Wiring Diagram - H/LAMP -.......................................26
HEADLAMP - Daytime Light System -.......................29
Operation ...................................................................29
Schematic ..................................................................30
Wiring Diagram - DTRL - ...........................................31
HEADLAMP - Headlamp Aiming Control -.................37
Description .................................................................37
Replacing Headlamp Aiming Actuator .......................38
Wiring Diagram - H/AIM - ..........................................39
Trouble Diagnoses.....................................................42
HEADLAMP...................................................................43
Bulb Replacement .....................................................43
Aiming Adjustment .....................................................43
EXTERIOR LAMP..........................................................45
Wiring Diagram - TAIL/L - ..........................................45
Wiring Diagram - STOP/L - .......................................48
Wiring Diagram - BACK/L - .......................................49
Wiring Diagram - F/FOG - .........................................51
Front Fog Lamp Aiming Adjustment ..........................53
Wiring Diagram - R/FOG -.........................................54
Schematic ..................................................................55Wiring Diagram - TURN - ..........................................56
Bulb Specifications ....................................................60
INTERIOR LAMP...........................................................61
Schematic ..................................................................61
Wiring Diagram - ILL - ...............................................62
Wiring Diagram - INT/L - ...........................................66
METER AND GAUGES.................................................70
Combination Meter ....................................................70
Schematic ..................................................................71
Wiring Diagram - METER - .......................................72
Combination Meter Self-Diagnosis ............................76
Components Inspection .............................................78
Trouble Diagnoses.....................................................79
Fuel Tank Gauge Unit Check ....................................80
Thermal Transmitter Check .......................................80
Oil Pressure Switch Check ........................................80
WARNING LAMPS AND CHIME...................................81
Schematic ..................................................................81
Wiring Diagram - WARN - .........................................82
Diode Check ..............................................................92
Wiring Diagram - CHIME - ........................................93
WIPER AND WASHER..................................................94
Wiring Diagram - WIPER - ........................................94
Wiring Diagram - WIP/R -..........................................96
Installation ..................................................................98
Washer Nozzle Adjustment .......................................99
Check Valve ...............................................................99
Wiring Diagram - HLC - ...........................................100
HORN, CIGARETTE LIGHTER AND CLOCK............104
Wiring Diagram - HORN - .......................................104
Wiring Diagram - CIGAR -.......................................105
Wiring Diagram - CLOCK -......................................106
REAR WINDOW DEFOGGER AND DOOR
MIRROR DEFOGGER.................................................107
Wiring Diagram - DEF - ...........................................107
Filament Check ........................................................109
Filament Repair ....................................................... 110
AUDIO.......................................................................... 111