1995 NISSAN ALMERA N15 coolant temperature

TROUBLEDIAGNOSES
Quick-glow System(Cont'd)

@

CHECK COMPONENTS NG
(Glow relay, Glowplug,Engine coolant
temperature sensor,Key-inswitch, Igni-
tion switch).
Refer to"Component Inspection"(EC-

397).
OK

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage or
the connection ofECM harness connec-
tor. Reconnect ECMharness connector
and retest. Replace
malfunctioning
component(s).

•

BATIERY [

Voltage

OV

Ignition

key
START
[

ON

IN [

OUT
,
,
,

I
,

JL
SEC5558SYSTEM
OPERATION CHECK

Set voltmeter betweenglowplugandengine body.
1. Key-in glowsystem
• Read voltage whenignition keyisinserted intoignition
switch.
Voltage: Battery voltage forabout 3seconds
Ignition

key

BATIERY [

Voltage

OV
SEC5568
2.
Quick-glow (Pre-glow)system
1) Turn ignition switch"ON"3or more seconds afterkey-in.
2) Read voltage.

Voltage: Battery voltage forabout 20*seconds

*
Coolant temperature islower than60°C(140°F).
* Repeating ignitionkey"ON" and"OFF" may
change thetime.
EC-395

4.After-glow system
1) Connect "8"terminal tostarter motor.
2) Start engine andread voltage.

Voltage: Battery voltage for5*minutes
* Coolant temperature islower than60°C(140°F).
TROUBLE
DIAGNOSES
Quick-glow System(Cont'd)

3. Quick-glow (Cranking)system
1) Disconnect "S"terminal forstarter motortoprevent engine
from cranking.
2) Read voltage whenignition keyisturned to"8T ART".

Voltage: Battery voltage
*
*
For about 20seconds afterreturning ignitionswitch
to
"ON".

START
[
J

Ignition ON
F:

key IN
r- j

OUT
L :

I

I

I

vo,,:TIERYlJlfr
o
V
SEC557B
STA:~[
JL

Ignition
r:
Enginerunning

key IN :

OUT [
!

I

I

,

I

,

votta;ATIERY [Jlfi=

o
V
SEC558B

~i5

II
ECM E
CONNECTOR
II

26-39101-105 POWER
SUPPLY ANDGROUND CIRCUITFORECM

1. Disconnect "S"terminal forstarter motortoprevent engine
from cranking.
2. Disconnect ECMharness connector.
3. Check terminals
@,
@.
Gill.
@
forground continuity.

Continuity shouldexist(On).

• IfNG, check ground harness.

SEF943P

(D
II
~i5
ECM B
CONNECTOR
II

• 5-25-28-30-37-38-106,
4.
Check voltage ateach terminal according tothe following
chart.

Terminal No. Ignitionswitchposition
Voltage

@
OFF(Notinserted)

GID
Battery
voltage

.
OFF
(Notinserted)
OFF (Not inserted) OV
@
OFF(Inserted) Batteryvoltage
OFF OV

@,@

ONSTARTBatteryvoltage
OFF OV
@
ONSTART
Batteryvoltage
OFF ONOV
@
STARTBatteryvoltage
EC-396

SEC5658Enginecoolant temperature sensor

Check engine coolant temperature sensorresistance.

Key-in switch

Check continuity betweenterminals ofkey-in switch connector.

11.5
5.6
3.7
1.2

Resistance
kfl
Continuity
No continuity
Continuity shouldexist.
Ignition
key
Not inserted
Inserted
Coolant
temp.°C('F)

-15 (5)

0(32)

10 (50)
40 (104)
TROUBLE
DIAGNOSES
Quick-glow System(Cont'd)

3. Install glowplugconnecting platesecurely.

Connecting
plate
Spring washer
~GIOwnut
Glow harness
Alternator
Refer to"CHARGING SYSTEM"inEL section.

EC-398

SYSTEMDESCRIPTION TROUBLE
DIAGNOSES
Partial LoadAdvance (PLA)Control

This system switches thesolenoid timeronand offcorresponding tothe engine coolant temperature and
engine speed.Thesolenoid timeroperation advancesandretards thefuel injection timingasfollows:
• The injection timingadvances whenthetimer isON, while itretards whenthetimer isOFF.
• When theengine stallsorthe ignition switchisin the START position, thesolenoid timerisset to
OFF.
• When theengine coolant temperature islower than10°C(50°F), thetimer isset toON.
Engine
coolant temperature sensor
Engine speedsensor Engine
coolant temperature
Engine speed
ECM

(Engine control
module) Solenoid
timer

•

DESCRIPTION
Solenoid timer

The solenoid timerswitches onand offinaccordance witha
signal fromtheECM. Thistimer operation changesthepres-
sure inthe injection pump,thereby controlling thefuel injection
timing.

Engine speedsensor

The engine speedsensor detects enginespeedbymonitoring
the rotation ofdrive shaftgearinthe injection pump.Thesen-
sor sends asignal of37 pulses perdrive shaftrotation tothe
ECM.

EC-399

TROUBLEDIAGNOSES ~

Partial LoadAdvance (PLA)Control (Cont'd)
LHD models

EC-PLA-01

~~~~K RefertoEL-POWER.

(JIB)


PLR REVGND-S GND-S

11~81 ~
/12.3
11
13.61

Y L!Y B/W B/W

I
I
f-
t
_I
t

Y ~ L!Y B!W

IrlsJ~ -
M.-B -
~I&~ ---
~r;]ID1

'T'
(E101)
L:jf'
"T'

Y L!Y B!W

1c!J~ ~
~cL~ ---
~c!J1

<=j=
(E231)
=r' =r'

Y L!Y B!W

!
L~Y B~Wt

rrh
m m
ECM
(ENGINECONTROL
MODULE)

@

TW

~
G!B

1
Toengine coolant
._--~. temperature sensor
(Refer toEC-COOL!F.)

II
N•4
1

B/Y

I

B/Y

Iffsn

START

IN;91

BR

I

BR

~
IGN

SOLENOID
TIMER ENGINE
SPEED
SENSOR INJECTION
PUMP

(E214)

~~

~ GY
~
(E214)

\ill)
GY
Refer
tolast page
(Foldout page).

HEC090
EC-400

TROUBLEDIAGNOSES ~
Partial LoadAdvance (PLA)Control (Cont'd)
RHO models

EC-PLA-02

FUSE RefertoEL-POWER.
BLOCK

(JIB)

~

PLR REVGND-S GND-S

11~BI ~
11
2•3113.,61

Y L/Y B/wB/W

I
I
f-
t-,t

Y ~ L/Y B/W

I$t _M~-
~t~ -- -
~$I
~

Y L/Y B/W

4r=~~t---~
Y L/Y B/W

!
L~Y B~Wt

m mrn
ECM
(ENGINE
CONTROL
MODULE)

~
•

TW

~
G/B

I
Toengine coolant
.......... ~.temperature sensor
(Refer toEC-COOL/F.)

IN.41

B/Y

I

B/Y

Wail

START

IN;91

BR

I

BR

~
IGN
SOLENOID
TIMER ENGINE
SPEED
SENSOR INJECTION
PUMP

(E214)

Refertolast page
(Foldout page).

~(E203)

rn:rn:tIlID
GY
M\

(~!4)

t:]lV
GY

HECC91
EC-401