lock NISSAN TERRANO 2002 Service Manual PDF

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CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector.
3. Check harness continuity between
ECM connector terminals
104,105,
106and engine ground. Refer to wir-
ing diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following:
IEngine ground connec-
tions
IHarness for open or
short-circuit between
ECM and engine ground
If NG, repair harness or
connectors.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector.
INSPECTION END
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TROUBLE DIAGNOSIS FOR POWER SUPPLYTD27Ti
Diagnostic Procedure (Cont'd)
EC-355

Diagnostic Procedure
INSPECTION START
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect mass air flow sensor har-
ness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between mass air flow
sensor connector terminalq
2and
engine ground with CONSULT-II or
tester.
Voltage: Battery positive voltage
OK
ENG
Check the following:
I20A fuse
IECM Relay
IHarness continuity
between ECM relay (coil
and load side) connector
and battery supply
IHarness connectors
F100,M755(RHD mod-
els)
IHarness connectors
M787,F66(LHD mod-
els)
IHarness continuity
between ECM relay con-
nector and Mass Air
Flow Sensor Connector.
If NG, replace 20A fuse or
ECM relay, or repair har-
ness or connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector.
3. Loosen and retighten engine ground
screws.
4. Check harness continuity between
mass air flow sensor harness connec-
tor terminalq
3and ECM connector ter-
minal218. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following.
IHarness connectors
F100,M755(RHD mod-
els)
IHarness continuity
between mass air flow
sensor and ECM
If NG, repair or replace
harness or connectors.
CHECK INPUT SIGNAL CIRCUIT.
Check harness continuity between mass
air flow sensor connector terminalq
4and
ECM connector terminal223. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following.
IHarness connectors
F100,M755(RHD mod-
els)
IHarness continuity
between mass air flow
sensor and ECM
If NG, repair or replace
harness or connectors.
CHECK INPUT SIGNAL CIRCUIT.
Check harness continuity between mass
air flow sensor connector terminalq
5and
ECM connector terminal224. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following.
IHarness connectors
F100,M755(RHD mod-
els)
IHarness continuity
between mass air flow
sensor and ECM
If NG, repair or replace
harness or connectors.
CHECK COMPONENT
(Mass air flow sensor).
Refer to ªCOMPONENT INSPECTIONº,
EC-360.
OK
ENG
Replace mass air flow sen-
sor.
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NEF664
NEF591
NEF352
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DTC P0100 MASS AIR FLOW SENTD27Ti
EC-359

Component Description
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine cool-
ant temperature input. The sensor comprises a thermistor which is
sensitive to the change in temperature. The electrical resistance of
the thermistor decreases as temperature increases.

Engine coolant
temperature
ÉC (ÉF)Voltage
(V)Resistance
(kW)
þ10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.1 - 2.9
50 (122) 2.3 0.68 - 1.00
90 (194) 1.0 0.236 - 0.260
On Board Diagnosis Logic
DTC Malfunction is detected when ...Check Items
(Possible Cause)
P0115
0103IAn excessively high or low voltage from the sensor is
input to ECM.IHarness or connectors
(The sensor circuit is open or short-circuited.)
IEngine coolant temperature sensor
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 5 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch to ªONº position and wait at least 5 sec-
onds.
2) Turn ignition switch to ªLOCKº position, wait at least 5 seconds
and then turn to ªONº position.
3) Perform diagnostic test mode II (Self-diagnostic results).
SEF594K
SEF012P
DTC P0115 COOLANT TEMP SENTD27Ti
EC-361

Diagnostic Procedure
INSPECTION START
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect engine coolant temperature
sensor harness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between engine coolant
temperature sensor connector terminal
q
1and engine ground with CONSULT-II
or tester.
Voltage:
Approximately 4.9V
OK
ENG
Check the following:
IHarness connectors
E151,F138(LHD model)
E151,M843(RHD
model)
IHarness for open or
short circuit between
ECM and engine coolant
temperature sensor.
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Check harness continuity between
engine coolant temperature sensor
connector terminalq
2and ECM terminal
334. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following:
IHarness connectors
E151,F138(LHD model)
E151,M843(RHD
model)
IHarness for open or
short circuit between
ECM and engine coolant
temperature sensor.
If NG, repair harness or
connectors.
CHECK COMPONENT
(Engine coolant temperature sensor).
Refer to EC-364.
OK
ENG
Replace engine coolant
temperature sensor.
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
NEF487
NEF670
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DTC P0115 COOLANT TEMP SENTD27Ti
EC-363

Component Description
ACCELERATOR WORK UNIT
The accelerator position sensor is installed on the upper end of the
accelerator pedal assembly. The sensor detects the accelerator
position and sends a signal to the ECM. The ECM uses the signal
to determine the amount of fuel to be injected.
The accelerator position switch is installed inside the accelerator
position sensor. This switch is used for plausibility check of the
accelerator position sensor.
On Board Diagnosis Logic
DTC Malfunction is detected when ...Check Items
(Possible Cause)
P0120
0403IAn excessively low or high voltage from the sensor is
detected by the ECM.IHarness or connectors
(The sensor or switch circuit is open or
short-circuited.)
IAccelerator position sensor
IAccelerator position switch
DTC Confirmation Procedure A (For General
Plausibility)
WITH CONSULT-II
1) Turn ignition switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Depress accelerator pedal fully and keep it for at least 1 sec-
ond. Then release it and wait at least 5 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch to ªONº position.
2) Depress accelerator pedal fully and keep it for at least 1 sec-
ond. Then release it and wait at least 5 seconds.
3) Turn ignition switch to ªLOCKº position, wait at least 5 seconds
and then turn to ªONº position.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with
ECM.
MEC959D
DTC P0120 ACCEL POS SENSORTD27Ti
EC-365

DTC Confirmation Procedure B (For
Accelerator Sticking)
If DTC P0571 is displayed same time, cure it at first.
WITH CONSULT-II
1) Turn ignition switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and rev it up to above 1,300 rpm.
4) Depress brake pedal immediately after releasing accelerator
pedal and keep it at least 5 seconds.
WITHOUT CONSULT-II
1) Start engine and rev it up to above 1,300 rpm.
2) Depress brake pedal immediately after releasing accelerator
pedal and keep it at least 5 seconds.
3) Turn ignition switch to ªLOCKº position, wait at least 5 seconds
and then turn to ªONº position.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with
ECM.
DTC P0120 ACCEL POS SENSORTD27Ti
EC-366

Diagnostic Procedure
ACCELERATOR POSITION SENSOR
INSPECTION START
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect accelerator work unit har-
ness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between accelerator
work unit connector terminalq
5and
engine ground with CONSULT-II or
tester.
Voltage: Approximately 5V
OK
ENG
Check the following:
IHarness for open or
short-circuit between
ECM and accelerator
work unit.
If NG, repair harness or
connectors.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Loosen and retighten engine ground
screws.
3. Check harness continuity between
accelerator work unit connector termi-
nalq
2and ECM connector terminal
434. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following:
IHarness for open-circuit
between ECM and
accelerator work unit
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Disconnect ECM harness connector.
2. Check harness continuity between
ECM terminal
425and accelerator
position sensor connector terminalq
4.
Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Repair harness or connec-
tors.
CHECK COMPONENT
(Accelerator position sensor).
Refer to ªCOMPONENT INSPECTIONº on
page EC-371.
OK
ENG
Replace accelerator pedal
assembly.
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
NEF700
NEF591
YEC246A
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DTC P0120 ACCEL POS SENSORTD27Ti
EC-368

qA
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect accelerator work unit har-
ness connector and ECM harness con-
nector.
3. Check harness continuity between
accelerator work unit terminalq
3and
ECM terminal
435. Refer to wiring
diagram.
Continuity should exist.
Check harness for short-circuit.
OK
ENG
Check the following:
I10A fuse in fuse box
I75A fusible link in fusible
link box
IHarness continuity
between ECM relay and
battery positive supply
IHarness for open or
short-circuit between
ECM relay and accelera-
tor position switch.
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector.
3. Check harness continuity between
accelerator work unit connector termi-
nalq
1and ECM connector terminal
426. Refer to wiring diagram.
Continuity should exist.
If OK; check harness for short-circuit.
If OK, re-connect harness connectors.
OK
ENG
Repair harness or connec-
tors.
CHECK COMPONENT.
(Accelerator position switch.)
Refer to ªCOMPONENT INSPECTIONº on
page EC-371.
OK
ENG
Replace accelerator pedal.
Disconnect and reconnect harness con-
nectors in the circuits. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
SEF628S
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DTC P0120 ACCEL POS SENSORTD27Ti
Diagnostic Procedure (Cont'd)
EC-370

Component Description
FUEL TEMPERATURE SENSOR (FTS)
The fuel temperature sensor is used to detect the fuel temperature
in the injection pump. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the fuel tempera-
ture input. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.
The sensor is built into the inside electrical circuit of the injection
pump.
On Board Diagnosis Logic
DTC Malfunction is detected when ...Check Items
(Possible Cause)
P0180
0402IAn excessively high or low voltage from the sensor is
detected by ECM.IHarness or connectors
(The sensor circuit is open or short-circuited.)
IFuel temperature sensor
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 5 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch to ªONº position and wait at least 5 sec-
onds.
2) Turn ignition switch to ªLOCKº position, wait at least 5 seconds
and then turn to ªONº position.
3) Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
DTC P0180 FUEL TEMP SENSORTD27Ti
EC-372

Diagnostic Procedure
INSPECTION START
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect electrical fuel injection
pump harness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between electronic con-
trol fuel injection pump (Fuel tempera-
ture sensor) harness connector termi-
nalq
6and engine ground with CON-
SULT-II or tester.
Voltage:
Approximately 4.9V
OK
ENG
Check the following:
IHarness for open or
short-circuit between
ECM and electronic con-
trol fuel injection pump
(fuel temperature sen-
sor)
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Check harness continuity between
electronic control fuel injection pump
(fuel temperature sensor) connector
terminalq
5and ECM connector
terminal
335. Refer to wiring dia-
gram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following:
IHarness for open or
short-circuit between
ECM and electronic con-
trol fuel injection pump
(fuel temperature sen-
sor).
If NG, repair harness or
connectors.
CHECK COMPONENT
[Electronic control fuel injection pump
(Fuel temperature sensor)].
Refer to ªCOMPONENT INSPECTIONº on
page EC-375.
OK
ENG
Have the injection pump
assembly serviced by an
authorised service repre-
sentative.
Disconnect and reconnect harness con-
nectors in the circuits. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
YEC248A
YEC254A
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DTC P0180 FUEL TEMP SENSORTD27Ti
EC-374