1995 NISSAN ALMERA N15 Service Manual

TROUBLEDIAGNOSIS FOROTC21
Ignition Signal(Cont'd)

EC-IGN/SG-01

ToECM
(ECCS control
module)
Israel
DISTRIBUTOR

~

W

n

B/Y BB

f.J
1

m
ffi)

~~

W/B B/W

t
II

.- B/Y.

-

CONDENSER
LHD
models
RHO models
For Europe and
Except
@

Detectable line
for DTC
Non-detectable line forDTC
POWER TRANSISTOR

-:
-:


:

(8):

@:

@:

~
G

II

G

W
RESISTOR

~

2

GY/R W/B

rn m

IGN IGN

CK

IGNITION
COIL
ECM (ECCSCONTROL
MODULE)

(IT)

B/R

~

SPARK PLUG

t

Refer
toEL-POWER.
ST IGNITION
SWITCH

@

30A

OJ

G

m

'e-

ACC

4J
B/R

•

4>1>
B/R B/R

m~
'le'(tiQ])

QID~
~@

B/R B/R

1>J
I

4-'
B/R B/R

@
IctJ, IrtJl
@

(H)
9F
=r
CEID

B/R B/R

tJ

OFF

~--------------------~

I I

:~@R@
, I
I
W W
I

L
j
r---------------------,

I

I

~w:
GY
I
I

L
j
Refer
tolast page
(Foldout page).

fIll
I
II~
(H)

3456 W
~I

I
'Ill
<£ID

4567B W

HEC033
EC-114

TROUBLEDIAGNOSIS FORDTC21
Ignition Signal(Cont'd)
GA16DE forAustralia

EC-IGN/SG-01

•

n

B/Y BB

i.J
1

~ rn

DISTRIBUTOR

m

~

ECM (ECCS
CONTROL
MODULE)

CED
~lkj:!J

W/B B/W

t
II
ToECM

.- B/Y..(ECCS control
~ module)
CONDENSER
POWER TRANSISTOR -:
Detectable line
for DTC
-: Non-detectable
line forDTC

~
G

II

G

W
RESISTOR

~

2

GY/R W/B

m m

IGN IGN

CK

IGNITION
COIL

B/R

7

t

SPARK PLUG
Refer
toEL-POWER.
IGNITION
SWITCH

@

30A

OJ

'e-

ACC

~
B/R

r=b(fW

lap'CM[)

B/R

IUJI@

'9Fem
B/R

~@W

GImJ
W
B:I!

I'~
em

3456 W
r-------------------,

I I

I I

I
1)(1
m
1Zl~'

: (11213\41516)
GY
CZIID
GY:

I I

~-------------------~
Refer
tolast page
(Foldout page).

101 102 103
107 108
109
113 114
115 104
105
106
110 111112
116
117
118

HEC066
EC-115

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 FORDTC21
Ignition Signal
(Cont'd)

COMPONENT INSPECTION
Ignition coil

1. Disconnect ignitioncoilharness connector.
2. Check resistance asshown inthe figure.
If NG, replace ignitioncoil.
3. For checking secondary coil,remove distributor cap.
4. Check resistance betweenignitioncoilharness connector
terminal
q)
and thesecondary terminalonthe distributor
head. If NG, replace distributor.

Terminal

(j) -
CID
(Primary coil)

(j) -
secondary terminalondistrib-
utor head (Secondary coil) Resistance
[at25°C
(7rF))

Approximately 1Q
Approximately 10kQ

Power transistor
terminals ~
.B..

(615143121D
(~l..?)

SEF473Q
AEC841 Power
transistor

1. Disconnect powertransistor harnessconnector.
2. Check powertransistor resistance betweenterminals
@

and
@.

Terminals Resistance Result
NotOQ
OK
@
and
CID

OQ NG

If NG, replace distributor.

Resistor
1. Disconnect resistorharness connector.
2. Check resistance betweenterminals
CD
and
@.

Resistance: Approximately 2.2kQ[at25°C (77°F)]

If NG, replace resistor.

EC-118

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

TROUBLEDIAGNOSIS FORDTC34
Knock Sensor (KS)(Cont'd)
Except forEurope andIsrael

EC-KS-01

rn
JOINT
CONNECTOR-6

CW

1

ECM
(ECCS
CONTROL
MODULE)

em

KNK

11
2:
I
w

f .--------.

I I

I I
I I

I I
I I

l~ •

w~

wOO

f •

I I

I I

I I
I I

I I

I I

I': )
-:
Detectable line
for DTC
-: Non-detectable
line forOTC



@g)
BR
~oo
LL.@y B
w

m

KNOCK
SENSOR


~cw

I1IIIITITDII
GY

EC-120 HEC034

GA16DE forAustralia TROUBLE
DIAGNOSIS FORDTC34
Knock Sensor (KS)(Cont'd)

EC-KS-01

rn
JOINT
CONNECTOR-6

(F2)

1

ECM
(ECCS
CONTROL
MODULE)

em

KNK

1
5•4
1
w

f .------ .....

I I

I I

I I

I I

I I
I I

1':- •

w


w

f •

I I
I I

I I

I I

I I

!.:-
j
-:
Detectable line
for
DTC

-: Non-detectable
line for
DTC

•

fl
\!.1.SJ
GY
w

m

KNOCK
SENSOR

0:102)

~@

rn:IIIITIIIII
GY

101 102103
107 108109

113
114
115
104

105 106
110 111112
116
117
118

HEC067
EC-121