2003 NISSAN ALMERA N16 Engine Control

MONITOR ITEM CONDITION SPECIFICATION
BARO SEN Ignition switch: ONAltitude
Approx. 0 m (0 ft): Approx. 100.62
kPa (1.0062 bar, 1.026 kg/cm
2,
14.59 psi)
Approx. 1,000 m (3,218 ft): Approx.
88.95 kPa (0.8895 bar, 0.907
kg/cm
2, 12.90 psi)
Approx. 1,500 m (4,922 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 ValueNJEC0723Specification 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 result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
313 L/WElectronic control fuel
injection pump[Engine is running]
Warm-up condition
Idle speedApproximately 0.1V
314 L/RElectronic control fuel
injection pump[Engine is running]
Warm-up condition
Idle speedApproximately 0.4V
316 PUElectronic control fuel
injection pump[Engine is running]
Warm-up condition
Idle speedApproximately 2.5V
317 PElectronic control fuel
injection pump[Engine is running]
Warm-up condition
Idle speedApproximately 2.5V
On Board Diagnosis LogicNJEC0724
DTC Malfunction is detected when .... Check Items (Possible cause)
P1690
0705Injection pump control unit does not function
properly.Electronic control fuel injection pump
SEF817Y
DTC Confirmation ProcedureNJEC0725WITH CONSULT-IINJEC0725S011) Turn ignition switch “ON” and wait at least 2 seconds.
2) Select “DATA MONITOR” 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 “START” for at
least 2 seconds.)
4) If DTC is detected, go to “Diagnostic Procedure”, EC-187.
WITHOUT CONSULT-IINJEC0725S021) Turn ignition switch “ON” and wait at least 2 seconds.
DTC P1690 P5·PUMP C/MODULEYD
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-186

2) Start engine and run it for at least 2 seconds at idle speed.
(If engine does not run, turn ignition switch to “START” for 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.
5) If DTC is detected, go to “Diagnostic Procedure”, EC-187.
Diagnostic ProcedureNJEC0726
1 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-186, again.
5. Is the DTC P1690 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-186, again.
4. Perform “Diagnostic Test Mode II (Self-diagnostic results)”.
5. Is the DTC 0705 displayed again?
YesorNo
Yes Replace electronic control fuel injection pump.
NoINSPECTION END
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DTC P1690 P5·PUMP C/MODULEYD
DTC Confirmation Procedure (Cont’d)
EC-187

DescriptionNJEC0760SYSTEM DESCRIPTIONNJEC0760S01
Sensor Input Signal to ECMECM
Func-
tionActuator
Crankshaft position sensor
(TDC)Engine speed
Glow
controlGlow lamp,
Glow relay
"
Glow plugs Engine coolant tempera-
ture sensorEngine coolant tem-
perature
When engine coolant temperature is more than approximately
75°C (167°F), the glow relay turns off.
When coolant temperature is lower than approximately 75°C
(167°F):
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.
Cranking
The glow relay turns ON, allowing current to flow through glow
plug.
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.
The glow indicator lamp turns ON for a certain period of time in
relation to engine cooalnt temperature at the time glow relay is
turned ON.
SEF376Y
COMPONENT DESCRIPTIONNJEC0760S02Glow PlugNJEC0760S0201The 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.
GLOW CONTROL SYSTEMYD
Description
EC-188

Diagnostic ProcedureNJEC0763
1 INSPECTION START
Check fuel level, fuel supplying system, starter motor, etc.
OK or NG
OK GO TO 2.
NG Correct.
2 CHECK INSTALLATION
Check that glow plug nut and all glow plug connecting plate nuts are installed properly.
SEF392YA
OK or NG
OK (With CONSULT-II) GO TO 3.
OK (Without CONSULT-
II)GO TO 4.
NG Install properly.
3 CHECK GLOW INDICATOR LAMP OPERATION
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “COOLAN TEMP/S” in “DATA MONITOR” mode with CONSULT-II.
3. Confirm that “COOLAN TEMP/S” indicates below 75°C (167°F). If it indicates above 75°C (167°F), cool down engine.
SEF013Y
4. Turn ignition switch “OFF”, wait at least 5 seconds and then turn “ON”.
5. Make sure that glow indicator lamp is turned “ON” for 1.5 seconds or more after turning ignition switch “ON”, and then
turned “OFF”.
OK or NG
OK GO TO 5.
NG GO TO 6.
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GLOW CONTROL SYSTEMYD
Diagnostic Procedure
EC-191

4 CHECK GLOW INDICATOR LAMP OPERATION
Without CONSULT-II
1. Turn ignition switch “ON”.
2. Confirm that the voltage between ECM terminal 347 (Engine coolant temperature sensor signal) and ground is above
1.36V. If it is below 1.36V, cool down engine.
SEF442Z
3. Turn ignition switch “OFF”, wait at least 5 seconds and then turn “ON”.
4. Make sure that glow indicator lamp is turned “ON” for 1.5 seconds or more after turning ignition switch “ON”, and then
turned “OFF”.
OK or NG
OK GO TO 5.
NG GO TO 6.
5 CHECK GLOW CONTROL SYSTEM OVERALL FUNCTION
1. Turn ignition switch “OFF”.
2. Set voltmeter probe between glow plug and engine body.
3. Turn ignition switch “ON”.
4. Check the voltage between glow plug and engine body under the following conditions.
SEF431Y
OK or NG
OKINSPECTION END
NG GO TO 11.
GLOW CONTROL SYSTEMYD
Diagnostic Procedure (Cont’d)
EC-192

DescriptionNJEC0764SYSTEM DESCRIPTIONNJEC0764S01
Sensor Input Signal to ECM ECM Function Actuator
Electronic controlled fuel injection pump Fuel injection signal
EGR volume con-
trolEGR volume control
valve Crankshaft position sensor (TDC) Engine speed
Vehicle speed sensor Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator position sensor Accelerator position
Mass air flow sensor Amount of intake air
Air conditioner switch Air conditioner operation
Electrical load Electrical load signal
This system controls flow rate of EGR led from exhaust manifold
to intake manifold. The opening of the EGR by-pass passage in the
EGR volume control valve changes to control the flow rate. A
built-in step motor moves the valve in steps corresponding to the
ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined
by considering various engine conditions.
The EGR volume control valve remains close under the following
conditions.
Engine stopped
Engine starting
Low engine coolant temperature
Excessively high engine coolant temperature
High engine speed
Wide open throttle
SEF908Y
SEF411Y
COMPONENT DESCRIPTIONNJEC0764S02EGR Volume Control ValveNJEC0764S0201The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the
ECM. Two windings are turned ON and OFF in sequence. Each
time an ON pulse is issued, the valve opens or closes, changing
the flow rate. When no change in the flow rate is needed, the ECM
does not issue the pulse signal. A certain voltage signal is issued
so that the valve remains at that particular opening.
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EGR VOLUME CONTROL SYSTEMYD
Description
EC-197

CONSULT-II Reference Value in Data Monitor
Mode
NJEC0765Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
EGR VOL CON/VEngine: After warming up
Air conditioner switch: “OFF”
Shift lever: Neutral position
No-loadAfter one minute at idle More than 10 step
Revving engine up to 3,200 rpm 0 step
ECM Terminals and Reference ValueNJEC0766Specification 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 result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA(DC Voltage)
337
338
350
351W/L
PU/W
GY
OR/BEGR volume control valve[Engine is running]
Warm-up condition
Idle speed0.1 - 14V
(Voltage signals of each
ECM terminals differ
according to the control
position of EGR volume
control valve.)
EGR VOLUME CONTROL SYSTEMYD
CONSULT-II Reference Value in Data Monitor Mode
EC-198

Diagnostic ProcedureNJEC0768
1 CHECK EGR VOLUME CONTROL SYSTEM OVERALL FUNCTION
1. Turn ignition switch “OFF”.
2. Set the oscilloscope probe between ECM terminals 337, 338, 350, 351 and ground.
3. Start engine and let it idle.
4. Check the oscilloscope screen when revving engine up to 3,200 rpm and return to idle.
SEF247Z
OK or NG
OKINSPECTION END
NG GO TO 2.
2 CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT-I
1. Turn ignition switch “OFF”.
2. Disconnect EGR volume control valve harness connector.
SEF388Y
3. Turn ignition switch “ON”.
4. Check voltage between EGR volume control valve terminals 2, 5 and groundwith CONSULT-II or tester.
YEC397A
OK or NG
OK GO TO 8.
NG GO TO 3.
EGR VOLUME CONTROL SYSTEMYD
Diagnostic Procedure
EC-200