1995 NISSAN ALMERA N15 ECO mode

TROUBLEDIAGNOSES -General Description @K]
ECM Terminals andReference Value(Conl'd)
ECM INSPECTION TABLE-Except GA16DE forAustralia

Specification dataarereference valuesandaremeasured betweeneachterminal and
@
(ECCS ground).
TERMINAL WIRE
NO. COLOR ITEM
CONDITION DATA
IEngine isrunning.1
0.2-0.3V

L
Idle speed
1
WIB
Ignitionsignal
IEngineisru~

L
Engine speedis2,000 rpm. Approximately
0.7V
Tachometer IEngineisrunning.1
2 LIB
(Modelswithtachome-

L
Idle speed 0.7
-0.9V
ter)
3 GYIR
Ignitioncheck jEngine
isrunning.1
Approximately13V

L
Idle speed
Engine isrunning.'

I

Ignition switch"OFF"I
0-1V
ECCS relay(Self-shut-
L

For afew seconds afterturning ignition
4
WIG

off) switch
"OFF"
llgnition switch"OFF"I
BATTERYVOLTAGE

L
Afew seconds afterturning ignition
(11-14V)
switch "OFF"andthereafter
IEngine isrunning.1
BATTERYVOLTAGE
Cooling fanrelay (Low
L

Cooling fanisnot operating. (11-14V)
9 LGIR
speed) IEngineisrunning.1

L
Cooling fanisoperating. Approximately
OV
IEngine isrunning.1
BATTERYVOLTAGE
Cooling fanrelay (High
t

Cooling fanisnot operating.
(11-14V)
10 LG Cooling
fanisoperating atlow speed.
speed) IEngineisrunning.1

L
Cooling fanisoperating athigh speed. Approximately
OV
IEngine isrunning.1

L
Both
AIC
switch andblower fanswitch Approximately
OV
11 Yor
GAir
conditioner relay are
"ON".
IEngine isrunning.1
BATTERYVOLTAGE

LAIC
switchis"OFF". (11
-14V)
IEngine isrunning.1
BATTERYVOLTAGE
VTC solenoid valve

L
Idle speed (11
-14V)
12 YIR (GA
16DE engine mod-
IEngineisrunning.1
els except forEurope
and Israel)

L
Engine isracing quickly fromidleto4,000 Approximately
OV
rpm at1st position.

EC-83
•

TROUBLEDIAGNOSES -General Description
mJ

ECM Terminals andReference Value(Cont'd)

TERMINAL WIRE
NO. COLOR ITEM
CONDITION DATA
46 WIL Powersupply (Back-up)
Ilgnitionswitch"OFF'" BA
TTERY VOLTAGE
(11 -14V)
101 RIB InjectorNo.1
103
GIB
InjectorNo.3
BATTERYVOLTAGE
110 Y/B InjectorNO.2 IEngine
isrunning./
(11-14V)
112 LIB Injector
NO.4
IEngineisrunning.1
BATTERY VOLTAGE
Heated oxygen sensor

L
Engine speedisabove 3,200rpm. (11
-14V)
102 OR heaterground
(For Europe andIsrael) IEngine
isrunning.1
ApproximatelyOV

L
Engine speedisbelow 3,200rpm.
jlgnition switch"ON"I

L
For 5seconds afterturning ignition switch
"ON" Approximately
OV
104 B/P Fuel
pump relay /Engine
isrunning.1
(Except forEurope)
Ilgnitionswitch"ON"I
BATTERYVOLTAGE

L
5seconds afterturning ignition switch
(11-14V)
"ON" andthereafter
EVAP canister purge
control solenoid valveIEngine
isrunning.1 (Warm-up condition)
(GA16DE
MIT
models

L
Idle speed Approximately
OV
except forEurope
&

105 P Israel)
EGR valve
&
EVAP can-
ister purge control sole-IEngine
isrunning.1 (Warm-up condition)
BATTERYVOLTAGE
noid valve (ForEurope

L

Engine isracing fromidleto3,000 rpmin
(11-14V)
and Israel, andGA15DE
1st position.

MIT
models)
jlgnitionswitch"ON"I

L
For 5seconds afterturning ignition switch
"ON" 0.7
-0.9V
106 SIP Fuel
pump relay IEngine
isrunning.1
(For Europe)
-

Ilgnition switch"ON"I
BATTERYVOLTAGE

L
5seconds afterturning ignition switch
(11-14V)
"ON" andthereafter
IEngine isrunning.1
10-13V

L
Idle speed
IACV-AAC valve(Open-
IEngineisrunning.1
111 5B ingsignal: Exceptfor
Europe andIsrael)

l
51.."" wheel
t,
be'" I,med

Approximately5.0V
Air conditioner isoperating.
Rear window defogger switchis"ON".
Lighting switchis"ON".

EC-86

TROUBLEDIAGNOSIS FORDTC11 @KJ
Camshaft PositionSensor(CMPS) (Cont'd)
DIAGNOSTIC TROUBLECODECONFIRMATION
PROCEDURE

fiii\
1)Turn ignition switch"ON"andselect "DATA

\JV
MONITOR" modewithCONSULT.
2) Crank engine foratleast 2seconds.

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

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

EC-95
•

TROUBLEDIAGNOSIS FORDTC12
Mass AirFlow Sensor (MAFS)

The mass airflow sensor measures theintake airflow rateby
taking apart ofthe entire flow.Measurements aremade insuch
a manner thattheECM receives electrical outputsignals var-
ied bythe amount ofheat emitting fromthehotwire placed in
the stream ofthe intake air.
When intake airflows intotheintake manifold througharoute
around thehotwire, theheat generated fromthehotwire is
taken awaybythe air.The amount ofheat depends onthe air
flow. Onthe other hand, thetemperature ofthe ..hot wire is

SEF154N
automatically controlledtoacertain number ofdegrees.
Therefore, itis necessary tosupply thehotwire withmore •
electric currentinorder tomaintain thetemperature ofthe hot
wire. TheECM knows theairflow bymeans ofthe electric
c~ange.

SEF695K

Diagnostic Trouble
Code No. Malfunction
isdetected when... Check
Items
(Possible Cause)

12
•
An excessively highorlow voltage fromthesensor •Harness orconnectors
is entered toECM. (Thesensor circuitisopen orshorted.)
• Mass airflow sensor

DIAGNOSTIC TROUBLECODECONFIRMATION
PROCEDURE
rif\
1)Turn ignition switch"ON",andwait foratleast 6
~ seconds.
2) Select "DATA MONITOR" modewithCONSULT.
3) Start engine andwait foratleast 3seconds.

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

r 1)Turn ignition switch"ON",andwait foratleast 6
~ seconds.
2) Start engine andwait foratleast 3seconds.
3) Turn ignition switch"OFF", waitforatleast 5seconds
and then turn"ON".
4) Perform "Diagnostic TestMode II"(Self-diagnostic
results) withECM.

EC-101

•

Repair
harness orcon-
nectors.
Repair harness orcon-
nectors.
Replace massairflow
sensor. Repair
harness orcon-
nectors.
NG
NG
NG
NG
INSPECTION
START
CHECK POWER SUPPLY.
1. Turn ignition switch"OFF".
2. Disconnect massairflow sensor har-
ness connector.
3. Turn ignition switch"ON".
4. Check voltage between terminal
@

and ground withCONSULT ortester.
Voltage: Batterypositive voltage
CHECK INPUTSIGNAL CIRCUIT.
Check harness continuity betweenter-
minal
CD
and ECM terminal
@
or@.
Continuity shouldexist.
If OK, check harness forshort.
INSPECTION END
OK
Trouble isnot fixed.
CHECK
GROUND CIRCUIT.
1. Turn ignition switch"OFF".
2. Disconnect ECMharness connector.
3. Loosen andretighten engineground
screws.
4. Check harness continuity between
terminal
@
and ECM terminal
@
or

@
orengine ground.
Continuity shouldexist.
If OK, check harness forshort.
CHECK COMPONENT
(Mass airflow sensor).
Refer to"COMPONENT INSPECTION"
on page EC-107.
Disconnect andreconnect harnesscon-
nectors inthe circuits. Thenretest.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
SEF138R
TROUBLE
DIAGNOSIS FORDTC12
Mass AirFlow Sensor (MAFS) (Conl'd)
DIAGNOSTIC PROCEDURE
For Europe ~GA 15DE engine
and Israel
I~
",,~~)rl

\~\" /JJ~

11'
Mass airflow sensor
_ harness connector

==---,

I-

I
I

d.-
I

;~

*1 ForEurope andIsrael, andGA15DE engine
*2 :GA 16DE engine models exceptfor
Europe andIsrael SEF139R
~
Mass airflow sensor
~(~lr~~

,~\ C/

Power steering \'
tluic! reservxr ..--\ /,'"

W~
Meo,"""
EC-105

TROUBLEDIAGNOSIS FORDTC13
SEF594K Engine
Coolant Temperature Sensor(ECTS)

The engine coolant temperature sensorisused todetect the
engine coolant temperature. Thesensor modifies avoltage sig-
nal from theECM. Themodified signalreturns tothe ECM as
the engine coolant temperature input.Thesensor usesather-
mistor whichissensitive tothe change intemperature. The
electrical resistance ofthe thermistor decreases astempera-
ture increases.

20
18
6
9 4

B
2

Iii
10

1ii
0.8

'0

£ 0.4
0.2
0.1 -20 020 40 60 80100
(-4) (32) (68)(104)(140)(176)(212)
Temperature 'C
(OF)

SEF012P
<

Reference data>

Engine coolant temper-
Voltage Resistance
ature
'C ('F) (V)

(kQ)
-10 (14) 4.47.0-11.4
20 (68)
3.52.1-2.9
50 (122)
2.20.6-1.0
90 (194) 0.9
0.23-0.26

Diagnostic
Trouble Code

No.
Malfunction
isdetected when... Check
Items
(Possible Cause)

13
•An excessively highorlow voltage fromthesensor •Harness orconnectors
is entered toECM. (Thesensor circuitisopen orshorted.)
• Engine coolant temperature sensor

DIAGNOSTIC TROUBLECODECONFIRMATION
PROCEDURE

(F.i\
1)Turn ignition switch"ON".
~ 2)Select "DATA MONITOR" modewithCONSULT.
3) Wait foratleast 5seconds.

------------OR------------
fU\
1)Turn ignition switch"ON"andwait foratleast 5sec-
~ onds.
2) Turn ignition switch"OFF", waitforatleast 5seconds
and then turn"ON".
3) Perform "Diagnostic TestMode II"(Self-diagnostic
reSUlts) withECM.

EC-108

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

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