engine NISSAN ALMERA N15 1995 Service Manual

TROUBLEDIAGNOSIS FORDTC13 ~
Engine Coolant Temperature Sensor(ECTS)
(Cont'd)

EC-ECTS-01

t
ENGINE
COOLANT
TEMPERATURE
SENSOR

m

@:ForEurope and
Israel

@:
Except@

*1",@ GY@BR!Y

,

-: Detectable line
for DTC
-: Non-detectable
line forDTC
•

lZlfll)

GY
B

~
GND
-A
B
~
GND -A ECM
(ECCSCONTROL
MODULE)

em

HEC032
EC-109

GA16DE forAustralia TROUBLE
DIAGNOSIS FORDTC13
[]K]

Engine Coolant Temperature Sensor(ECTS)
(Cont'd)

EC-ECTS-01

~ENGINE COOLANT

TEMPERATURE

SENSOR

(ffl)

U:iJ
lbi=ll

BR/Y B

t
-:
-:
Detectable
line
for DTC
Non-detectable line forDTC

~
@
GY
BR/Y

IT5TI
TW
B

115"0
I

GND -A
ECM
(ECCS
CONTROL
MODULE)

em

101 102103
107 108109
113 114115 104
105 106
110 HI H2
116 117118

EC-110 HEC065

•

Replace enginecoolant
temperature sensor.
Check
thefollowing.
• Harness foropen or
short between ECM
and engine coolant
temperature sensor
If NG, repair harness or
connectors.
Check thefollowing.
• Harness foropen or
short between ECM
and engine coolant
temperature sensor
If NG, repair harness or
connectors.

NG
NG
NG

CHECK COMPONENT
(Engine coolanttemperature sensor).
Refer to"COMPONENT INSPECTION"
on next page.INSPECTION
START

m
CHECK POWER SUPPLY.

1. Turn ignition switch"OFF".
2. Disconnect enginecoolant tempera-
ture sensor harness connector.
3. Turn ignition switch"ON"
4. Check voltage between terminal @
and ground withCONSULT ortester.

~oltage:
Approximately SV
SEF519Q
Ii)

CHECK GROUND CIRCUIT.

1. Turn ignition switch"OFF".
2. Check harness continuity between

SEF518Q
terminal
G)
and engine ground.

Continuity shouldexist.

If OK, check harness forshort.

TROUBLE
DIAGNOSIS FORDTC13 ~
Engine Coolant Temperature Sensor(ECTS)
(Cont'd)
DIAGNOSTIC PROCEDURE

Engine
coolant temperature
sensor harness connector

~/

~Io
ten

~Io

~

Disconnectandreconnect harnesscon-
nectors inthe circuits. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
INSPECTION END

EC-111

TROUBLEDIAGNOSIS FORDTC13 @KJ
Engine Coolant Temperature Sensor(ECTS)
, '(Cont'd)
COMPONENT INSPECTION
Engine coolant temperature sensor

Check resistance asshown inthe figure.

SEF152P Temperature
°C
(OF)

20 (68)
50 (122)
90 (194) Resistance
kQ
2.1 -2.9
0.68 -1.00
0.236 -0.260

If
NG, replace enginecoolant temperature sensor.

EC-112

TROUBLEDIAGNOSIS FORDTC21

Malfunction isdetected when...
Diagnostic
Trouble
Code No.
Ignition
coil
&
power
transistor harnessconnectors

AEC832 Ignition
Signal
COMPONENT DESCRIPTION
Ignition coil
&
power transistor (Builtintodistributor)

The ignition coilisbuilt intodistributor. Theignition signalfrom
the ECM issent tothe power transistor. Thepower transistor
switches onand offthe ignition coilprimary circuit.Asthe pri-
mary circuit isturned onand off,the proper highvoltage is
induced inthe coil secondary circuit.

Check Items
(Possible Cause)

•

21
•
The ignition signalinthe primary circuitisnot
entered toECM during engine cranking orrunning. •
Harness orconnectors
(The ignition primary circuitisopen orshorted.)
• Power transistor unit.
• Resistor
• Camshaft positionsensor
• Camshaft positionsensorcircuit

DIAGNOSTIC TROUBLECODECONFIRMATION
PROCEDURE
Note: Ifboth DTC11and 21are displayed, performTROUBLE
DIAGNOSIS FORDTC11first. Refer toEC-94.

(F.i\ 1)Turn ignition switch"ON".
~ 2)Select "DATA MONITOR" modewithCONSULT.
3) Start engine.

----------OR ----------

1) Turn ignition switch"ON".
2) Start engine.
3) Turn ignition switch"OFF", waitforatleast 5seconds
and then turn"ON".
4) Perform "Diagnostic TestMode II"(Self-diagnostic
results) withECM.

EC-113

Repairharness orcon-
nectors.
Check
thefollowing.
• Harness connectors

QD,@orGD.

@

• Harness connectors

@.
• Harness foropen or
short between ignition
coil and ignition switch

If
NG, repair harness or
connectors.
Repair harness orcon-
nectors.

NG Yes
NG
NG
CHECK
GROUND CIRCUIT.

1. Turn ignition switch"OFF".
2. Disconnect powertransistor harness
connector.
3. Check harness continuity between
terminal
@
and engine ground.

Continuity shouldexist.

If OK, check harness forshort.

OK OK

INSPECTION
START
Turn ignition switch"OFF", andrestart
engine.

Is engine running?
No
CHECK POWER SUPPLV.

1. Turn ignition switch"OFF".
2. Disconnect ignitioncoilharness con-
nector.
3. Turn ignition switch"ON".
4. Check voltage between terminal
(J)

and ground withCONSULT ortester.

Voltage: Balteryvoltage
CHECK INPUTSIGNAL CIRCUIT.

1. Disconnect ECMharness connector.
2. Check harness continuity between
ECM terminal
G)
and power transis-
tor terminal
G).
Continuity shouldexist.
If
OK, check harness forshort.

AEC832
SEF468Q
TROUBLE
DIAGNOSIS FORDTC21
Ignition Signal(Cont'd)
DIAGNOSTIC PROCEDURE
SEF469Q

~15

@3

ill~

~85 ~85

II
ECM
~CONNECTORII
(tI2IffllsI6)

1 OK

CHECK COMPONENTS
(Ignition coil,power transistor).
Refer to"COMPONENT INSPECTION",

EC-118. NG

Replace malfunctioning
component(s).

OK •

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.

SEF470Q
Troubleisnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
INSPECTION END

EC-116

•

Repair
harness orcon-
nectors.

(;J

CHECK INPUTSIGNAL CIRCUIT. NG

1. Stop engine.
2. Disconnect ignitioncoilharness con-
nector.
3. Strip tapecovering resistoranddis-
connect theconnector.
4. Disconnect ECMharness connector.
5. Check harness continuity between
ignition coilterminal
@
and resistor
terminal
(!),
resistor terminal
@

and ECM terminal
@
or
@.
Continuity shouldexist.

If OK, check harness forshort.

TROUBLE
DIAGNOSIS FORDTC21
Ignition Signal(Cont'd)
@

~io
cffiJ

~i8

dIb

OK

~i5

1=1
=E=CM====!:E'
CONNECTOR
II

3
CHECK
COMPONENTS
(Resistor).
Refer to"COMPONENT INSPECTION"
on next page.
Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.
NG

Replace resistor.
Trouble isnot fixed.

@3)
CD:
For Australia
@ :Except forAustralia
SEF143R
Check
ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
INSPECTION END

EC-117

TROUBLEDIAGNOSIS FOROTC34
PIEZO-ELEMENT Malfunction isdetected when....
Diagnostic
Trouble Code
No. SEF598KKnock
Sensor (KS)

The knock sensor isattached tothe cylinder block.Itsenses
engine knocking usingapiezoelectric element.Aknocking
vibration fromthecylinder blockissensed asvibrational pres-
sure. Thispressure isconverted intoavoltage signalandsent
to the ECM.

CheckItems
(Possible Cause)

•

00
1)
2)
3)
34
•An excessively loworhigh voltage fromtheknock •Harness orconnectors
sensor isentered toECM. (Theknock sensor circuitisopen orshorted.)
• Knock sensor
DIAGNOSTIC TROUBLECODECONFIRMATION
PROCEDURE
rif\
1)Turn ignition switch"ON"andselect "DATA

\J!I)
MONITOR" modewithCONSULT.
2) Start engine andrunitfor atleast 5seconds atidle
speed.

---------- OR----------

Start engine andrunitfor atleast 5seconds atidle
speed.
Turn ignition switch"OFF", waitforatleast 5seconds
and then turn"ON".
Perform "Diagnostic TestMode II"(Self-diagnostic
results) withECM.

EC-119

Replaceknocksensor.
NG
NG
Check thefollowing.
• Harness connectors

@,@

If NG, repair harness or
connectors.

r

OK
CHECK
SUB.HARNESS CIRCUIT.
1. Disconnect knocksensor harness
connector.
2. Check harness continuity between
knock sensor harness connector ter-
minal @and knock sensor sub-har-
ness connector terminal
@.

Continuity shouldexist.
If OK, check harness forshort.
CHECK COMPONENT
(Knock sensor).
Refer to"COMPONENT INSPECTION"
on next page.
Loosen
andretighten engineground
screws.

Fa
CHECK INPUTSIGNAL CIRCUIT. NG
Repair harness orcon-
1. Turn ignition switch"OFF".
--.

nectors.
2. Disconnect ECMharness connector
and knock sensor sub-harness con-
nector.
3. Check harness continuity between
terminal @and ECM terminal
@
or

@.

Continuity shouldexist.
If OK, check harness forshort.
TROUBLE
DIAGNOSIS FORDTC34
Knock Sensor (KS)(Conl'd)
DIAGNOSTIC PROCEDURE
For Europe andIsrael, andGA15DE.L..l
en~ine m\~~:e?, Is
Eng~eground
@'~@)
1 _

- \.Y
INSPECTIONSTART

J--

Fa
~i5

II
ECM
]9'CONNECTORII

27 54

,~\
C-/

Power steerin9\'
fluid reservoir /'\ /-:

.~~ :,c"",

OK

@:
ForAustralia

@:
Except forAustralia

SEF144RDisconnect
andreconnect harnesscon-
nectors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage or
the connection ofECM harness connec-
tor. Reconnect ECMharness connector
and retest.
INSPECTION END
SEF776Q EC.122

TROUBLEDIAGNOSIS FOROTC41
Intake AirTemperature Sensor(IATS)

The intake airtemperature sensormounted tothe aircleaner
housing, detectsintakeairtemperature andtransmits asignal
to the ECM.
The temperature sensingunituses athermistor whichissen-
sitive tothe change intemperature. Electricalresistance ofthe
thermistor decreases inresponse tothe temperature rise.
This sensor isnot directly usedtocontrol theengine system. It
is used onlyforthe on-board diagnosis.

Diagnostic
Trouble Code

No.
41
Malfunction
isdetected when...
a) An excessively loworhigh voltage fromthesen-
sor isentered toECM.
b) Voltage senttoECM isnot practical whencom-
pared withtheengine coolant temperature sensor
signal. Check
Items
(Possible Cause)
• Harness orconnectors
(The sensor circuitisopen orshorted.)
• Intake airtemperature sensor.
*
MONITOR
*
NO FAIL

COOLAN TEMP/S 30°C

RECORD
I

SEF002P

CONNECT ~

II
ECM
a
CONNECTOR
II
I) ~

51
SEF006PDIAGNOSTIC
TROUBLECODECONFIRMATION
PROCEDURE
For themalfunction a)and b)

fF.I\
1)Wait untilengine coolant temperature isless than 90°C
~ (194°F).
(a) Turn ignition switch"ON".
(b) Select "DATA MONITOR" modewithCONSULT.
(c) Check theengine coolant temperature.
(d) Ifthe engine coolant temperature isnot less than
90°C (194°F), turnignition switch"OFF"andcool
down engine.
2) Turn ignition switch"ON".
3) Select "DATA MONITOR" modewithCONSULT.
4) Wait foratleast 5seconds.

---------OR ---------

~ 1)Wait untilengine coolant temperature isless than
~ 90°C(194°F.).
(a) Turn ignition switch"ON".
(b) Check voltage between ECMterminal
@
and
ground.

Voltage: Morethan1.2(V)

(c) Ifthe voltage isnot more than1.2V, turnignition
switch "OFF"andcool down engine.
2) Turn ignition switch"ON"waitforatleast 5seconds.
3) Turn ignition switch"OFF", waitforatleast 3seconds
and then turn"ON".
4) Perform "Diagnostic TestMode II"(Self-diagnostic
results) withECM.

EC-124