2004 NISSAN TERRANO Service Repair Manual

Description
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the engine.
On Board Diagnosis Logic
DTCMalfunction is detected when ... Check Items (Possible Cause)
P1107
0802 I
An excessively high or low voltage from
the absolute pressure sensor (built-into
ECM) is sent to ECM. I
ECM
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and wait at least 2 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Start engine and wait at least 2 seconds.
3) Turn ignition switch ªOFFº, wait at least 5 seconds and then turn
ªONº.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
SEC220B
SEF817Y
DTC P1107 ECM 10TD27Ti
EC-430
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Diagnostic Procedure
INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº, EC-430 again.
5. Is the DTC P1107 displayed again?
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Erase the Diagnostic Test Mode II (Self- diagnostic results) memory.
3. Perform ªDTC Confirmation Procedureº, EC-430 again.
4. Perform ªDiagnostic Test Mode II (Self- diagnostic results)º.
5. Is the DTC 0802 displayed again?
No
EYe s Replace ECM.
INSPECTION END
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DTC P1107 ECM 10TD27Ti
EC-431
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Component Description
ELECTRIC GOVERNOR
The electric governor is built into the fuel injection pump. It moves
the control sleeve to increase or decrease the amount of fuel
injected.
When current flows through the coil, a magnetic force is produced,
rotating the rotor. The rotor shaft is installed to the control sleeve
via a ball pin which is eccentrically situated in relation to the rotor
shaft. With this arrangement, the control sleeve can be moved in
relation to rotor rotation.
The rotor's rotating angle is determined by a balanced condition of
magnetic force (generated by current flow regulated by means of
the ECM) and tension of return spring (installed to rotor). The larger
the current flow through the coil, the greater the rotor's rotating
angle. This means that the control sleeve moves to the right,
increasing the amount of fuel injected.
The ECM regulates the current flow through the coil by changing
the duty cycle ratio which controls the ON-OFF operation of the
electric governor grounding circuit.
On Board Diagnosis Logic
DTCMalfunction is detected when .... Check Items
(Possible cause)
P1206
0108 I
Fuel injection feedback system does not operate
properly. [This system consists essentially of ECM,
electric governor and control sleeve position sensor.] I
Main power supply circuit
I Harness or connectors
(Electric governor and control sleeve position sensor
circuit)
I Electric governor
I ECM
SEF632S
SEF633S
DTC P1206 F/INJ F/B 2TD27Ti
EC-432
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DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to ªONº position and select ªDATA MONI-TORº mode with CONSULT-II.
2) Start engine above 1,200 rpm.
3) Run it for 2 seconds above 1,200 rpm. Return engine speed to idle.
WITHOUT CONSULT-II
1) Start engine above 1,200 rpm.
2) Run engine for 2 seconds above 1,200 rpm. Return enginespeed to idle.
3) Turn ignition switch to ªLOCKº position, wait at least 5 seconds and then turn to ªONº position.
4) Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
NOTE:
If malfunction occurs intermittently, conduct suitable driving
pattern for 10 minutes. This makes it possible to determine
DTC.
DTC P1206 F/INJ F/B 2TD27Ti
EC-433
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Wiring Diagram
YEC677A
DTC P1206 F/INJ F/B 2TD27Ti
EC-434
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Diagnostic Procedure
INSPECTION START
CHECK MAIN POWER SUPPLY.
Refer to EC-375.
CHECK POWER SUPPLY CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector and electronic injection pump harness
connector.
3. Check harness continuity between injection pump connector terminal q
7
and ECM connector terminals107,
108,109. Refer to wiring diagram.
Continuity should exist.
4. Check harness continuity between injection pump connector terminal q
7
and ECM relay terminalq5.
Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following.
IHarness connector
M787,
F66(LHD models)
I Harness for open or
short between electronic
control injection pump
and ECM relay
I Harness for open or
short between electronic
control injection pump
and ECM
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
Check harness continuity between injec-
tion pump connector terminal q
4and
ECM connector terminals
101,102,
103. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Repair harness or connec-
tors.
CHECK COMPONENT
(Electric governor).
Refer to ªCOMPONENT INSPECTIONº on
next page.
OK
ENGHave the injection pump
assembly serviced by an
authorised service repre-
sentative.
Disconnect and reconnect harness connec-
tors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness con-
nector. Reconnect ECM harness connector
and retest.
INSPECTION END
YEC248A
H
H
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H
H
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DTC P1206 F/INJ F/B 2TD27Ti
EC-435
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Component Inspection
ELECTRIC GOVERNOR
1. Disconnect electronic injection pump harness connector.
2. Check continuity between injection pump connector terminalsq
4and q7.
Resistance: Approximately 1.0W [at 25ÉC (77ÉF)]
If NG, replace.
YEC248A
YEC242A
DTC P1206 F/INJ F/B 2TD27Ti
EC-436
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Component Description
CONTROL SLEEVE POSITION SENSOR (CSPS)
The control sleeve position sensor is installed on the electric gov-
ernor. It senses the position of control sleeve (rotor angle) while the
control sleeve is being driven by the electric governor, and feeds it
back to the ECM.
On Board Diagnosis Logic
DTCMalfunction is detected when .... Check Items
(Possible cause)
P1207
0105 I
An excessively high or low voltage from the sensor is
detected by ECM.
........................................................................\
...................
I An improper voltage signal from the sensor is detected
by ECM during engine running. I
Harness or connectors
(The control sleeve position sensor circuit is open or
short-circuited.)
I Control sleeve position sensor
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to ªONº position and select ªDATA MONI-
TORº mode with CONSULT-II.
2) Start engine and run it for at least 2 seconds at idle speed.
WITHOUT CONSULT-II
1) Start engine and run it for at least 2 seconds at idle speed.
2) Turn ignition switch to ªLOCKº position, wait at least 5 seconds and then to ªONº position.
3) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º.
SEF641S
DTC P1207 CONT SLEEV POS SENTD27Ti
EC-437
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