Ignition NISSAN TERRANO 2002 Service Service Manual

qA
REPLACE.
Replace fusible link.
Does the fusible link blow out when
ignition switch is turned ON?
Ye s
ENo
Inspection end
CHECK SOLENOID VALVE RELAY
POWER SUPPLY CIRCUIT.
1. Disconnect battery cable and ABS
actuator and electric unit connector.
2. Check continuity between ABS actuator
and electric unit connector
F29(body
side) terminalq
18and ground.
Continuity should not exist.
OK
ENG
Check the following
IHarness connector
F29, LHD:F68and
M784, or RHD:F79and
M744
IHarness for open or short
between ABS actuator
and electric unit and fus-
ible link
If NG, repair harness or
connector.
REPLACE.
Replace ABS actuator and electric unit.
qB
REPLACE.
Replace fuse.
Does the fuse blow out when ignition
switch is turned ON?
No
EYe s
Check the following.
IHarness connector
F29,
M822, LHD:F66and
M787, or RHD:F76:
,F136:,M743:
andM829:
IHarness for open or
short between ABS
actuator and electric unit
and fuse
If NG, repair harness or
connector.
END
Inspection end
NBR331
H
H
H
H
H
TROUBLE DIAGNOSES
Diagnostic Procedure 3 (ABS actuator solenoid
valve and solenoid valve relay) (Cont'd)
BR-72

qA
REPLACE.
Replace fusible link.
Does the fusible link blow out when
ignition switch is turned ON?
Ye s
ENo
Inspection end
CHECK ABS ACTUATOR MOTOR
POWER SUPPLY CIRCUIT.
1. Disconnect battery cable and ABS
actuator and electric unit connector
F29.
2. Check continuity between ABS actuator
and electric unit connector
F29(body
side) terminalq
17and ground.
Continuity should not exist.
OK
ENG
Check the following
IHarness connector
F29,
LHD:
F68andM784,or
RHD:
F79andM744
IHarness for open or
short between ABS
actuator and electric unit
and fusible link
If NG, repair harness or
connector.
CHECK HARNESS CONNECTOR.
Check ABS actuator and electric unit pin
terminals for damage or the connection of
ABS actuator and electric unit harness
connector.
Reconnect ABS actuator and electric unit
harness connector. Then retest.
NBR336
H
H
H
TROUBLE DIAGNOSES
Diagnostic Procedure 5 (Motor Relay or motor)
(Cont'd)
BR-76

Diagnostic Procedure 7 (Low voltage)
Malfunction code No. 57
CHECK CONNECTOR.
1. Disconnect ABS actuator and electric
unit connector. Check terminals for
damage or loose connections. Then
reconnect connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Ye s
ENo
Inspection end
CHECK ABS CONTROL UNIT POWER
SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric
unit connector.
2. Check voltage between ABS actuator
and electric unit connector
F29termi-
nalq
15and ground.
Battery voltage should exist when
ignition switch is turned ON.
OK
ENG
qA(See below.)
CHECK ABS CONTROL UNIT GROUND
Refer to ABS ACTUATOR AND ELEC-
TRIC UNIT GROUND in Ground Circuit
Check, BR-66.
OK
ENG
Repair harness and con-
nector.
CHECK HARNESS CONNECTOR.
Check ABS actuator and electric unit pin
terminals for damage or the connection of
ABS actuator and electric unit harness
connector. Reconnect ABS actuator and
electric unit harness connector. Then
retest.ENG
Replace
Replace ABS actuator and
electric unit
qA
CHECK FUSE.
Check 10A fuse
19. For fuse layout, refer
to POWER SUPPLY ROUTING in EL sec-
tion.
OK
ENG
Replace fuse.
CHECK ABS CONTROL UNIT POWER
SUPPLY CIRCUIT
Check continuity between fuse and ABS
actuator and electric unit connector
F29
(body side) terminalq15.
OK
ENG
Check the following:
IHarness connector
F29,
M822, LHD:F66and
M787, or RHD:F76:
,F136:,M743:
andM829:
IHarness for open or
short between ABS
actuator and electric unit
and fuse
If NG, repair harness or
connector.
Check battery. Refer to BATTERY in EL
section.
NBR337
NBR338
H
H
H
H
H
H
TROUBLE DIAGNOSES
BR-77

Removal and Installation
IWhen removing or installing the seat trim, carefully handle it to keep dirt out and avoid damage.
CAUTION:
IBefore removing the front seat, turn the ignition switch off, disconnect both battery cables and wait
at least 3 minutes (models with side air bag).
IDo not drop, tilt, or bump the side air bag module installed in the seat. Always handle it with care.
IDisconnect the side air bag harness connector and heated seat harness connector from under the
seat before removing the seat.
IDisconnect the side air bag harness connector before removing the seatback. Refer to RS-27,
ªFront Side Air Bag Moduleº for details.
FRONT SEAT
BT-34

Precautions
IAlways use a 12 volt battery as power source.
IDo not attempt to disconnect battery cable while engine is
running.
IBefore connecting or disconnecting the ECM harness
connector, turn ignition switch OFF and disconnect nega-
tive battery terminal. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
IBefore removing parts, turn off ignition switch and then
disconnect battery ground cable.
IDo not disassemble ECM.
IIf a battery terminal is disconnected, the memory will
return to the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is
disconnected. However, this is not an indication of a prob-
lem. Do not replace parts because of a slight variation.
IWhen ECM is removed for inspection, make sure to ground
the ECM mainframe.
IWhen connecting ECM harness connector, tighten secur-
ing bolt until the gap between the orange indicators disap-
pears.
: 3.0 - 5.0 N×m (0.3 - 0.5 kg-m, 26 - 43 in-lb)
IWhen connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
ISecurely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in the circuit, thus resulting in damage
to ICs.
IKeep ECM harness at least 10 cm (3.9 in) away from adja-
cent harnesses, to prevent an ECM system malfunction
SEF706Y
SEC220B
SEF665S
SEF308Q
SEF291H
PRECAUTIONSZD30DDTi
EC-9

System Chart
Input (Sensor) ECM Function Output (Actuator)
IElectronic control fuel injection pump
ICrankshaft position sensor (TDC)
IEngine coolant temperature sensor
IAccelerator position sensor
IAccelerator position switch
IAccelerator switch (F/C)
IPark/Neutral position (PNP) switch
IIgnition switch
IBattery voltage
IVehicle speed sensor
IAir conditioner switch
IMass air flow sensor
IStop lamp switch
IHeat up switch
ICharge air pressure sensor*1Fuel injection control Electronic control fuel injection pump
Fuel injection timing control Electronic control fuel injection pump
Fuel cut control Electronic control fuel injection pump
Glow control system Glow relay & glow lamp
On board diagnostic system MIL (On the instrument panel)
EGR volume control EGR volume control valve
Cooling fan control Cooling fan relay
Air conditioning cut control Air conditioner relay
Variable nozzle turbocharger control Variable nozzle turbocharger control sole-
noid valve
Swirl control valve control Swirl control valve control solenoid valve
Intake air control valve control Intake air control valve control solenoid
valve
*1: This sensor is not used to control the engine system under normal conditions.
ENGINE AND EMISSION CONTROL OVERALL SYSTEMZD30DDTi
EC-19

Fuel Injection Control System
DESCRIPTION
System description
Three types of fuel injection control are provided to accommodate engine operating conditions; normal control,
idle control and start control. The ECM determines the appropriate fuel injection control. Under each control,
the amount of fuel injected is compensated to improve engine performance.
Pulse signals are exchanged between ECM and electronic control fuel injection pump (control unit is built-in).
The fuel injection pump control unit performs duty control on the spill valve (built into the fuel injection pump)
according to the input signals to compensate the amount of fuel injected to the preset value.
Start control
Input/output signal chart
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection con-
trol (start control)Electronic control fuel injec-
tion pump Crankshaft position sensor (TDC) Engine speed
Ignition switch Start signal
When the ECM receives a start signal from the ignition switch, the
ECM adapts the fuel injection system for the start control. The
amount of fuel injected at engine starting is a preset program value
in the ECM. The program is determined by the engine speed and
engine coolant temperature.
For better startability under cool engine conditions, the lower the
coolant temperature becomes, the greater the amount of fuel
injected. The ECM ends the start control when the engine speed
reaches the specific value, and shifts the control to the normal or
idle control.
Idle control
Input/output signal chart
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection con-
trol (Idle control)Electronic control fuel injec-
tion pump Crankshaft position sensor (TDC) Engine speed
Park/Neutral position (PNP) switch Gear position
Battery Battery voltage
Accelerator position switch Idle position
Vehicle speed sensor Vehicle speed
Air conditioner switch Air conditioner signal
Heat up switch Heat up switch signal
When the ECM determines that the engine speed is at idle, the fuel injection system is adapted for the idle
control. The ECM regulates the amount of fuel injected corresponding to changes in load applied to the engine
to keep engine speed constant. The ECM also provides the system with a fast idle control in response to the
engine coolant temperature and heat up switch signal.
SEF648S
ENGINE AND EMISSION BASIC CONTROL SYSTEM
DESCRIPTIONZD30DDTi
EC-20

DTC and MI Detection Logic
When a malfunction is detected, the malfunction (DTC) is stored in the ECM memory.
The MI will light up each time the ECM detects malfunction. For diagnostic items causing the MI to light up,
refer to ªTROUBLE DIAGNOSIS Ð INDEXº, EC-7.
Diagnostic Trouble Code (DTC)
HOW TO READ DTC
The DTC can be read by the following methods.
Without CONSULT-II
ECM displays the DTC by a set of four digit numbers with MI illumination in the diagnostic test mode II (Self-
diagnostic results). Example: 0102, 0407, 1004, etc.
With CONSULT-II
CONSULT-II displays the DTC in ªSELF-DIAG RESULTSº mode. Examples: ªCRANK POS SEN (TDC)º, etc.
IOutput of the trouble code means that the indicated circuit has a malfunction. However, in the Mode
II it does not indicate whether the malfunction is still occurring or occurred in the past and returned
to normal.
CONSULT-II can identify them. Therefore, using CONSULT-II (if available) is recommended.
HOW TO ERASE DTC
How to erase DTC (
With CONSULT-II)
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Touch ªENGINEº.
3. Touch ªSELF-DIAG RESULTSº.
4. Touch ªERASEº. (The DTC in the ECM will be erased.)
The emission related diagnostic information in the ECM can be erased by selecting ªERASEº in the ªSELF-
DIAG RESULTSº mode with CONSULT-II.
How to erase DTC (Without CONSULT-II)
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Change the diagnostic test mode from Mode II to Mode I by using the data link connector. (See EC-36.)
The emission related diagnostic information in the ECM can be erased by changing the diagnostic test mode.
SEF371Y
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONZD30DDTi
EC-33

IIf the battery is disconnected, the emission-related diagnostic information will be lost after approx.
24 hours.
IErasing the emission-related diagnostic information using CONSULT-II is easier and quicker than
switching the diagnostic test mode using the data link connector.
NATS (Nissan Anti-Theft System)
IIf the security indicator lights up with the ignition switch in
the ªONº position or ªNATS MALFUNCTIONº is displayed
on ªSELF-DIAG RESULTSº screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to ªNATS (Nissan Anti-Theft System)º in EL section.
IConfirm no self-diagnostic results of NATS is displayed
before touching ªERASEº in ªSELF-DIAG RESULTSº mode
with CONSULT-II.
IWhen replacing ECM, initialization of NATS system and
registration of all NATS ignition key IDs must be carried out
with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedures of NATS initialization and NATS
ignition key ID registration, refer to CONSULT-II operation
manual, NATS.
Malfunction Indicator (MI)
DESCRIPTION
The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON with-
out the engine running. This is a bulb check.
IIf the MI does not light up, refer to EL section (ªWARNING
LAMPS AND CHIMEº) or see EC-291.
2. When the engine is started, the MI should go off.
If the MI remains on, the on board diagnostic system has
detected an engine system malfunction.
If MI illuminates or blinks irregularly after starting engine,
water may have accumulated in fuel filter. Drain water from
fuel filter. Refer to MA section.
SEF252Z
SAT652J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONZD30DDTi
Diagnostic Trouble Code (DTC) (Cont'd)
EC-34

On board diagnostic system function
The on board diagnostic system has the following three functions.
Diagnostic Test Mode KEY and ENG. Status Function Explanation of Function
Mode I Ignition switch in ON
position
Engine stopped
BULB CHECK This function checks the MI bulb for damage
(blown, open circuit, etc.).
If the MI does not come on, check MI circuit.
(See EC-291.)
Engine running
MALFUNCTION
WARNINGThis is a usual driving condition. When ECM
detects a malfunction, the MI will light up to
inform the driver that a malfunction has been
detected.
Mode II Ignition switch in ON
position
Engine stopped
SELF-DIAGNOSTIC RESULTS This function allows DTCs to be read.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONZD30DDTi
Malfunction Indicator (MI) (Cont'd)
EC-35