2004 NISSAN TERRANO engine

TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage and Pulse
Signal)
58 R/B A/T signal No. 4 Engine is running.
Warm-up condition
Idle speed Voltage goes high up once in
a few seconds
SEF448Z
59 G Heat up switch
Ignition switch ªONºHeat up switch is ªONº
Approximately 0V
Ignition switch ªONº
Heat up switch is ªOFFº BATTERY VOLTAGE
(11 - 14V)
68 Y/G Accelerator position sen-
sor signal output Ignition switch ªONº
Accelerator pedal fully released
0.4 - 0.6V
Ignition switch ªONº
Accelerator pedal fully depressed Approximately 4.5V
101 Y Variable nozzle turbo-
charger control solenoid
valve Engine is running.
Warm-up condition
Idle speed
Approximately 6.8V
SEF253Z
Engine is running.
Warm-up condition
Engine speed is 2,000 rpmApproximately 11V
SEF254Z
102 G/W Current return
Engine is running.Idle speed BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONZD30DDTi
ECM Terminals and Reference Value (Cont'd)
EC-76
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TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage and Pulse
Signal)
103 R/Y (LHD
mod-
els)
L/R
(RHD
mod-
els) EGR volume control
valve
Engine is running.
Warm-up condition
Idle speed
0.1 - 14V
105
109 11 5 G/Y
Y/B
R/L
106 11 2
11 8 B
B
B
ECM ground
Engine is running.
Idle speed Approximately 0V
111 LG Glow relay Refer to ªGLOW CONTROL SYSTEMº, EC-244.
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONZD30DDTi
ECM Terminals and Reference Value (Cont'd)
EC-77
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Main Power Supply and Ground Circuit
ECM TERMINALS AND REFERENCE VALUE
Remarks: 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)
4 G ECM relay (Self-shutoff) Ignition switch ªONº
Ignition switch ªOFFº
For a few seconds after turning ignition switch
ªOFFº
Approximately 0.25V
Ignition switch ªOFFº
More than a few seconds after turning ignition
switch ªOFFº BATTERY VOLTAGE
(11 - 14V)
38 B/W Ignition switch Ignition switch ªOFFº
0V
Ignition switch ªONº
BATTERY VOLTAGE
(11 - 14V)
39
43 B
B
ECM ground Engine is running.
Idle speed Approximately 0V
56
61
11 6 B/W
B/W
B/W
Power supply for ECM Ignition switch ªONº
BATTERY VOLTAGE
(11 - 14V)
102 G/W Current return Engine is running.
Idle speed BATTERY VOLTAGE
(11 - 14V)
106 11 2
11 8 B
B
B
ECM ground
Engine is running.
Idle speed Approximately 0V
TROUBLE DIAGNOSIS FOR POWER SUPPLYZD30DDTi
EC-79
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DIAGNOSTIC PROCEDURE
1 INSPECTION START
Start engine.
Is engine running?YesorNo
Ye s EGO TO 14.
No EGO TO 2.
2 CHECK ECM POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 38 and ground with CONSULT-II or tester.
SEF397Y
OK or NG
OK EGO TO 4.
NG EGO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
I10A fuse
I Harness for open or short between ECM and fuse
ERepair open circuit or short to ground or short to power in harness or connectors.
4 CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 39, 43, 106, 112, 118 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 6.
NG EGO TO 5.
TROUBLE DIAGNOSIS FOR POWER SUPPLYZD30DDTi
Main Power Supply and Ground Circuit
(Cont'd)
EC-82
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5 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F108, E225
I Harness connectors M842, F135 (RHD models)
I Harness for open or short between ECM and engine ground
ERepair open circuit or short to ground or short to power in harness or connectors.
6 CHECK ECM POWER SUPPLY CIRCUIT-II
1. Reconnect ECM harness connector.
2. Turn ignition switch ªONº and then ªOFFº.
3. Check voltage between ECM terminals 56, 61, 116 and ground with CONSULT-II or tester.
SEF288Z
OK or NG
OK ECheck electronic control fuel injection pump power supply circuit. Refer to ªDiagnostic
Procedureº, EC-185.
NG (Battery voltage does not
exist.) EGO TO 7.
NG (Battery voltage exists for
more than a few seconds.) EGO TO 13.
TROUBLE DIAGNOSIS FOR POWER SUPPLYZD30DDTi
Main Power Supply and Ground Circuit
(Cont'd)
EC-83
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17 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M787, F66 (LHD models)
I Harness for open or short between ECM and ECM relay
ERepair open circuit or short to ground or short to power in harness or connectors.
18 CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminals 39, 43, 106, 112, 118 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 20.
NG EGO TO 19.
19 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F108, E225
I Harness connectors M842, F135 (RHD models)
I Harness for open or short between ECM and engine ground
ERepair open circuit or short to ground or short to power in harness or connectors.
20 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
TROUBLE DIAGNOSIS FOR POWER SUPPLYZD30DDTi
Main Power Supply and Ground Circuit
(Cont'd)
EC-87
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Component Description
The mass air flow sensor (MAFS) is placed in the stream of intake
air. It measures the intake air flow rate by measuring a part of the
entire intake air flow. It consists of a hot wire that is supplied with
electric current from the ECM. The temperature of the hot wire is
controlled by the ECM a certain amount. The heat generated by the
hot wire is reduced as the intake air flows around it. The more air,
the greater the heat loss.
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot wire as air flow increases. The ECM
detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEMCONDITION SPECIFICATION
MAS AIR/FL SE I
Engine: After warming up
I Air conditioner switch: ªOFFº
I Shift lever: Neutral position
I No-load Idle
1.6 - 2.0V
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)
35 R Mass air flow sensor Engine is running.
Warm-up condition
Idle speed 1.6 - 2.0V
49 W Sensor's power supply Ignition switch ªONº
Approximately 5V
50 B Sensor's ground Engine is running.
Warm-up condition
Idle speed Approximately 0V
On Board Diagnosis Logic
Malfunction is detected when ...
Check Items (Possible Cause)
I An excessively high or low voltage from the sensor is sent to
ECM. I
Harness or connectors
(The sensor circuit is open or shorted.)
I Mass air flow sensor
SEF987W
DTC 0102 MASS AIR FLOW SENZD30DDTi
EC-88
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DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº, and wait at least 6 seconds.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and wait at least 3 seconds.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-92.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº, and wait at least 6 seconds.
2) Start engine and wait at least 3 seconds.
3) Turn ignition switch ªOFFº, wait at least 5 seconds and then turnªONº.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
5) If DTC is detected, go to ªDiagnostic Procedureº, EC-92.
SEF817Y
DTC 0102 MASS AIR FLOW SENZD30DDTi
EC-89
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