Nissan Terrano model r20 series 2004. Manual — part 177
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
DTC
Malfunction 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 “ON”.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Start engine and wait at least 2 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch “ON” and wait at least 2 seconds.
2) Start engine and wait at least 2 seconds.
3) Turn ignition switch “OFF”, wait at least 5 seconds and then turn
“ON”.
4) Perform “Diagnostic Test Mode II (Self-diagnostic results)” with
ECM.
SEC220B
SEF817Y
DTC P1107 ECM 10
TD27Ti
EC-430
Diagnostic Procedure
INSPECTION START
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “SELF DIAG RESULTS” mode
with CONSULT-II.
3. Touch “ERASE”.
4. Perform “DTC Confirmation Procedure”,
EC-430 again.
5. Is the DTC P1107 displayed again?
Without CONSULT-II
1. Turn ignition switch “ON”.
2. Erase the Diagnostic Test Mode II (Self-
diagnostic results) memory.
3. Perform “DTC Confirmation Procedure”,
EC-430 again.
4. Perform “Diagnostic Test Mode II (Self-
diagnostic results)”.
5. Is the DTC 0802 displayed again?
No
E
Yes
Replace ECM.
INSPECTION END
H
H
DTC P1107 ECM 10
TD27Ti
EC-431
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
DTC
Malfunction 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 2
TD27Ti
EC-432
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to “ON” position and select “DATA MONI-
TOR” 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 engine
speed to idle.
3) Turn ignition switch to “LOCK” position, wait at least 5 seconds
and then turn to “ON” position.
4) Perform “Diagnostic Test Mode II” (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 2
TD27Ti
EC-433
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