1995 NISSAN ALMERA N15 EC-301

TROUBLEDIAGNOSIS -General Description
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Diagnostic TroubleCode(DTC) Chart(Cont'd)

x:
Applicable
-: Not applicable
"DTC *1
*2
Check Items CONFIRMATION
"OVERALLFUNC-
Fail ReferencePage
(Possible Cause) PROCEDURE"
TIONCHECK"
Safe
Quick Ref. QuickRef. System
• Harness orconnectors
(The sensor circuitisopen orshorted.)
• Camshaft positionsensor
RUNNING
--

EC-289
• Starter motor
• Starting systemcircuit(ELsection)
• Dead (Weak) battery
• Harness orconnectors

-

(The sensor circuitisopen orshorted.) RUNNING
RUNNING
X

EC-293
• Mass airflow sensor
• Harness orconnectors
(The sensor circuitisopen orshorted.) IGN:
ON
-

X
EC-297
• Engine coolant temperature sensor
• Harness orconnectors
(The ignition primary circuitisopen orshorted.)
• Power transistor unit RUNNING

--

EC-301
• Camshaft positionsensor
• Camshaft positionsensorcircuit
• Harness orconnectors
(The sensor circuitisopen orshorted.) RUNNING

--

EC-306
• Knock sensor
• Harness orconnectors
(The sensor circuitisopen orshorted.)

-
IGN:
ON
X
EC-309
• Throttle position sensor
• No failure

--
-
-

*2: •The "OVERALL FUNCTIONCHECK"isasimplified andeffective waytoinspect acomponent orcircuit.
In some cases, the"OVERALL FUNCTIONCHECK"isused rather thana"DIAGNOSTIC TROUBLECODECONFIRMA-
TION PROCEDURE".
When noDTC CONFIRMATION PROCEDUREisavailable, the"NG" result ofthe OVERALL FUNCTION CHECKcanbe
considered tomean thesame asaDTC detection .
• During an"NG" OVERALL FUNCTION CHECK,theDTC might notbeconfirmed.

EC-269
•

TROUBLEDIAGNOSIS -General Description
Symptom MatrixChart

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1A 181C 1F1H
1R
1S1M
1J1L1K
1T
1V1N 1P1X 1Y
Fuel Fuelpump circuit

•
•
•
•
•

•
0
0

•
0

EC-327
Fuel pressure regulatorsystem

•
••

•

••
0
0 00

•
EC-241
Injector circuit

••
•
• •

•
0

00

•
EC-324
Evaporative emissionsystem
00 0 00
0 0

0
0
0 0
EC-238
Air Positivecrankcase ventilation system
00

•
0

•
0
0 0

0
0
00
EC-240
IACV-Air regulator

•••

•

••
•
0
0
0
EC-332
Incorrect idlespeed adjustment
0

0
0

0 0 0
EC-243
IACV-AAC valvecircuit

••
•
•
•
•
•
0

•
0

•
0

EC-335
IACV-FICD solenoidvalvecircuit
0
0 0
000 00 0
C)

EC-339
Ignition Incorrectignitiontimingadjustment
00

•
0

•• •
0
0

•
EC-243
Ignition circuit

•
•
•

•
•

•
• •
•
EC-301
EGR EGRvalve
&
EVAP canister purgecon-

00

trol solenoid valvecircuit
•

•
•
•
EC-319
EGR system

0
()

•• •
0
0

•
0
0
EC-319
Main power supply andground circuit
00 0 0
C)

0 00
0
0
0
EC-286
Cooling Coolingfancircuit

0
0
0
00 00 0 000 0
EC-343
Air conditioner circuit

00 00 0
00
0 0
0
HA
section
• ;High Possibility Item

0;
Low Possibility Item

EC-274
(continued
onnext page)

TROUBLEDIAGNOSIS FORDTC21
Ignition Signal
COMPONENT DESCRIPTION
Ignition coil
&
power transistor (Builtintodistributor)

The ignition coilisasmall molded type.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.

Diagnostic Trouble
Code No.

21
Malfunction
isdetected when...
• The ignition signalinthe primary circuitisnot sent
to ECM during engine cranking orrunning. Check
Items
(Possible Cause)
• 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-289.

(F.I\ 1)Turn ignition switch"ON".
~ 2)Select "DATA MONITOR" modewithCONSULT.
3) Start engine. (Ifengine doesnotrun, turn ignition
switch to"START" foratleast 5seconds.)

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

~ 1)Turn ignition switch"ON".
~ 2)Start engine. (Ifengine doesnotrun, turn ignition
switch to"START" foratleast 5seconds.)
3) Turn ignition switch"OFF", waitatleast 7seconds
and then turn"ON".
4) Perform "Diagnostic TestMode II"(Self-diagnostic
results) withECM.

EC-301