NISSAN TERRANO 2004 Service Repair Manual

11 CHECK EGR VOLUME CONTROL VALVE-II
Without CONSULT-II
1. Remove EGR volume control valve.
2. Reconnect ECM harness connector and EGR volume control valve harness connector.
3. Turn ignition switch ªONº and ªOFFº.
4. Check that EGR volume control valve shaft moves smoothly forward and backward according to the ignition switch position.
SEF560W
OK or NG
OK EGO TO 11.
NG EReplace EGR volume control valve.
12 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
DTC 1003 EGR VOLUME CONT/VZD30DDTi
Diagnostic Procedure (Cont'd)
EC-236
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Description
SYSTEM DESCRIPTION
The ECM and the electronic control fuel injection pump control unit
(abbreviated as the injection pump control unit) perform the real
time communication (signal exchange).
The ECM transmits the signals of the target fuel injection amount,
target fuel injection timing, and engine speed, etc., and receives the
signals of the pump speed and fuel temperature, etc. from the
injection pump control unit.
By those signals, the injection pump controls the optimum fuel
injection amount and injection timing of the spill valve and timing
control valve.
Injection pump control unit has an on board diagnostic system,
which detects malfunctions related to sensors or actuators built-into
electronic control fuel injection pump. These malfunction informa-
tion are transferred through the line (circuit) from injection pump
control unit to ECM.
FUEL INJECTION AMOUNT CONTROL
In accordance with the target fuel injection amount signal from the
ECM, the injection amount is controlled by controlling the spill valve
in the injection pump and by changing the needle opening time.
FUEL INJECTION TIMING CONTROL
Based on the target fuel injection timing signal from the ECM, the
injection timing is controlled in accordance with the timer spring by
performing the duty control of the timing control valve in the injec-
tion pump and by adjusting the pressure of the timer piston high
pressure chamber.
FUEL TEMPERATURE SENSOR
The sensor detects the fuel temperature in the injection pump and
calibrates the injection amount change by the fuel temperature.
CAM RING POSITION SENSOR
The sensor detects the passing of the protrusion on the sensor
wheel in the injection pump by the semiconductor magnetic resis-
tance element sensor. The cam ring position sensor synchronizes
with the cam ring, and detects the actual advance amount. The
injection pump control unit measures the injection pump revolution
by the signal of the cam ring position sensor.
SEF437Y
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
EC-237
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CONSULT-II Reference Value in Data Monitor
Mode
Remarks: Specification data are reference values.
MONITOR ITEMCONDITION SPECIFICATION
FUEL TEMP SEN IEngine: After warming up More than 40ÉC (104ÉF)
SPILL/V IEngine: After warming up Approx. 13ÉCA
INJ TIMG C/V I
Engine: After warming up,
idle the engine. Approx. 50 - 70%
DECELER F/CUT I
Engine: After warm-
ing up Idle OFF
BARO SEN IIgnition switch: ON Altitude
Approx.0m(0ft): Approx. 100.62 kPa (1.0062 bar, 1.026 kg/cm
2, 14.59
psi)
Approx. 1,000 m (3,281 ft): Approx. 88.95 kPa (0.8895 bar, 0.907 kg/cm
2,
12.90 psi)
Approx. 1,500 m (4,992 ft): Approx. 83.16 kPa (0.8316 bar, 0.848 kg/cm
2,
12.06 psi)
Approx. 2,000 m (6,562 ft): Approx. 78.36 kPa (0.7836 bar, 0.799 kg/cm
2,
11.36 psi)
ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
33 G Electronic control fuel
injection pump Engine is running.
Warm-up condition
Idle speed
Approximately 2.5V
40 R Electronic control fuel
injection pump Engine is running.
Warm-up condition
Idle speed
Approximately 2.5V
52 Y Electronic control fuel
injection pump Engine is running.
Idle speed
Approximately 0.1V
53 OR Electronic control fuel
injection pump Engine is running.
Idle speed
Approximately 0.35V
On Board Diagnosis Logic
Malfunction is detected when ....
Check Items (Possible cause)
I Fuel cut control system does not function properly. IHarness or connectors
(Electronic control fuel circuit is open or shorted.)
I Electronic control fuel
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
EC-238
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DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and run it for at least 2 seconds at idle speed.(If engine does not run, turn ignition switch to ªSTARTº for at
least 2 seconds.)
4) Turn ignition switch ªOFFº, wait at least 5 seconds and then turn ªONº.
5) If DTC is detected, go to ªDiagnostic Procedureº, EC-242.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Start engine and run it for at least 2 seconds at idle speed. (If engine does not run, turn ignition switch to ªSTARTº for 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.
5) If DTC is detected, go to ªDiagnostic Procedureº, EC-242.
SEF817Y
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
EC-239
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Wiring Diagram
LHD MODELS
YEC181A
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
EC-240
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RHD MODELS
YEC182A
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
Wiring Diagram (Cont'd)EC-241
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Diagnostic Procedure
1 CHECK ELECTRONIC CONTROL FUEL INJECTION PUMP POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect electronic control fuel injection pump harness connector.
MEC025E
3. Turn ignition switch ªONº.
4. Check voltage between electronic control fuel injection pump terminal 7 and ground.
MEC977DVoltage: Battery voltageOK or NG
OK EGO TO 3.
NG EGO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M787, F66 (LHD models)
I Harness connectors F108, E225
I Harness connectors E220, E231 (LHD models)
I Harness connectors M842, F135 (RHD models)
I Harness for open or short between electronic control fuel injection pump and ECM
I Harness for open or short between electronic control fuel injection pump and ECM relay
ERepair open circuit or short to ground or short to power in harness or connectors.
3 CHECK ELECTRONIC CONTROL FUEL INJECTION PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between electronic control fuel injection pump terminal 6 and ground. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 5.
NG EGO TO 4.
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
EC-242
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4 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E231, E220
I Harness for open or short between electronic control fuel injection pump and engine ground
ERepair open circuit or short to ground or short to power in harness or connectors.
5 CHECK COMMUNICATION LINE FOR OPEN AND SHORT
1. Check continuity between the following terminals. Refer to Wiring Diagram.
MTBL0444
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 7.
NG EGO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E227, F106
I Harness connectors E231, E220
I Harness connectors F135, M842 (RHD models)
I Harness for open or short between electronic control fuel injection pump and ECM
ERepair open circuit or short to ground or short to power in harness or connectors.
7 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
OK or NG
OK EReplace electronic control fuel injection pump.
NG ERepair open circuit or short to ground or short to power in harness or connectors.
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
Diagnostic Procedure (Cont'd)
EC-243
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Description
SYSTEM DESCRIPTION
Sensor Input Signal to ECMECM
Function Actuator
Crankshaft position
sensor (TDC) Engine speed
Glow
control Glow lamp,
Glow relay "
Glow plugs
Engine coolant tem-
perature sensor Engine coolant tem-
perature
When engine coolant temperature is more than approximately 75ÉC
(167ÉF), the glow relay turns off, inactivating the quick-glow control
until coolant temperature drops below approximately 55ÉC (131ÉF).
When coolant temperature is lower than approximately 75ÉC
(167ÉF):
I
Ignition switch ON
After ignition switch has turned to ON, the glow relay turns ON
for a certain period of time in relation to engine coolant
temperature, allowing current to flow through glow plug.
I Cranking
The glow relay turns ON, allowing current to flow through glow
plug.
I Starting
After engine has started, current continues to flow through glow
plug (after-glow mode) for a certain period in relation to engine
coolant temperature.
When engine speed exceeds approximately 4,800 rpm, current
flow through glow plug is interrupted.
The glow indicator lamp turns ON for a certain period of time in
relation to engine coolant temperature at the time glow relay is
turned ON.
COMPONENT DESCRIPTION
Glow plug
I The glow plug is provided with a ceramic heating element to
obtain a high-temperature resistance. It glows in response to a
signal sent from the ECM, allowing current to flow through the
glow plug via the glow relay.
I This engine uses two types of glow plugs.
Type A has a blue or yellow paint mark.
Type B has no paint mark.
The location of the paint mark is shown in the figure.
WARNING:
Do not use two types of glow plugs at the same time.
SEF376Y
SEF280Z
GLOW CONTROL SYSTEMZD30DDTi
EC-244
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ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
16 G/W Glow indicator lamp Ignition switch ªONº
Glow indicator lamp is ªONº
Approximately 1V
Ignition switch ªONº
Glow indicator lamp is ªOFFº BATTERY VOLTAGE
(11 - 14V)
111 LG Glow relay Refer to ªSYSTEM DESCRIPTIONº, EC-244.
GLOW CONTROL SYSTEMZD30DDTi
EC-245
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