2001 NISSAN ALMERA check engine

Engine Compartment
There are several reasons a vehicle or engine vibration could
cause an electrical complaint. Some of the things to check for are:
+Connectors not fully seated.
+Wiring harness not long enough and is being stressed due to
engine vibrations or rocking.
+Wires laying across brackets or moving components.
+Loose, dirty or corroded ground wires.
+Wires routed too close to hot components.
To inspect components under the hood, start by verifying the integ-
rity of ground connections. (Refer to GROUND INSPECTION
described later.) First check that the system is properly grounded.
Then check for loose connection bygently shakingthe wiring or
components as previously explained. Using the wiring diagrams
inspect the wiring for continuity.
Behind The Instrument Panel
An improperly routed or improperly clamped harness can become
pinched during accessory installation. Vehicle vibration can aggra-
vate a harness which is routed along a bracket or near a screw.
Under Seating Areas
An unclamped or loose harness can cause wiring to be pinched by
seat components (such as slide guides) during vehicle vibration. If
the wiring runs under seating areas, inspect wire routing for pos-
sible damage or pinching.
SGI842
HEAT SENSITIVENJGI0005S0203The owner's problem may occur during hot weather or after car has
sat for a short time. In such cases you will want to check for a heat
sensitive condition.
To determine if an electrical component is heat sensitive, heat the
component with a heat gun or equivalent.
Do not heat components above 60ÉC (140ÉF).If incident occurs
while heating the unit, either replace or properly insulate the com-
ponent.
SGI843
FREEZINGNJGI0005S0204The customer may indicate the incident goes away after the car
warms up (winter time). The cause could be related to water freez-
ing somewhere in the wiring/electrical system.
There are two methods to check for this. The first is to arrange for
the owner to leave his car overnight. Make sure it will get cold
enough to demonstrate his complaint. Leave the car parked out-
side overnight. In the morning, do a quick and thorough diagnoses
of those electrical components which could be affected.
HOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENT
Incident Simulation Tests (Cont'd)
GI-23

Key to Symbols Signifying Measurements or
Procedures
NJGI0006S02
Symbol Symbol explanation Symbol Symbol explanation
Check after disconnecting the con-
nector to be measured.Procedure with Generic Scan Tool
(GST, OBD-II scan tool)
Check after connecting the connec-
tor to be measured.Procedure without CONSULT-II or
GST
Insert key into ignition switch.A/C switch is ªOFFº.
Remove key from ignition switch.A/C switch is ªONº.
Turn ignition switch to ªOFFº posi-
tion.REC switch is ªONº.
Turn ignition switch to ªONº position.REC switch is ªOFFº.
Turn ignition switch to ªSTARTº posi-
tion.Fan switch is ªONº. (At any position
except for ªOFFº position)
Turn ignition switch from ªOFFº to
ªACCº position.Fan switch is ªOFFº.
Turn ignition switch from ªACCº to
ªOFFº position.Apply positive voltage from battery
with fuse directly to components.
Turn ignition switch from ªOFFº to
ªONº position.Drive vehicle.
Turn ignition switch from ªONº to
ªOFFº position.Disconnect battery negative cable.
Do not start engine, or check with
engine stopped.Depress brake pedal.
Start engine, or check with engine
running.Release brake pedal.
Apply parking brake.Depress accelerator pedal.
Release parking brake.Release accelerator pedal.
HOW TO FOLLOW TROUBLE DIAGNOSES
Key to Symbols Signifying Measurements or Procedures
GI-33

Symbol Symbol explanation Symbol Symbol explanation
Check after engine is warmed up
sufficiently.Pin terminal check for SMJ type
ECM and TCM connectors.
For details regarding the terminal
arrangement, refer to the ªELEC-
TRICAL UNITSº electrical refer-
ence page at the end of the
manual.
Voltage should be measured with a
voltmeter.
Circuit resistance should be mea-
sured with an ohmmeter.
Current should be measured with an
ammeter.
Procedure with CONSULT-II
Procedure without CONSULT-II
HOW TO FOLLOW TROUBLE DIAGNOSES
Key to Symbols Signifying Measurements or Procedures (Cont'd)
GI-34

NJGI0007
Function and System ApplicationNJGI0007S05
Diagnostic
test modeFunction ENGINE A/T ABS AIR BAGSMART
EN-
TRANCENATS*1NAVIGA-
TION
Work sup-
portThis mode enables a technician to
adjust some devices faster and
more accurate by following the indi-
cations on CONSULT-II.x ÐÐÐXÐÐ
Self-diag-
nostic
resultsSelf-diagnostic results can be read
and erased quickly.x x x xÐxÐ
Trouble
diagnostic
recordCurrent self-diagnostic results and
all trouble diagnostic records previ-
ously stored can be read.ÐÐÐ x ÐÐÐ
ECU dis-
criminated
No.Classification number of a replace-
ment ECU can be read to prevent
an incorrect ECU from being
installed.ÐÐÐ x ÐÐÐ
Data monitorInput/Output data in the ECU
(ECM) can be read.x x xÐxÐÐ
Data monitor
(Spec.)The specified values will be dis-
played when an OK/NG judgement
is difficult for the DATA MONITOR
items by Barchart and Line Graph.X ÐÐÐÐÐÐ
DTC work
supportThis mode enables a technician to
set operating conditions to confirm
self-diagnoses status/results.x*2x ÐÐÐÐÐ
Active testDiagnostic Test Mode in which
CONSULT-II drives some actuators
apart from the ECMs and also
shifts some parameters in a speci-
fied range.xÐxÐxÐÐ
ECU (ECM)
part numberECU (ECM) part number can be
read.x x x ÐÐÐÐ
Control unit
initializationAll registered ignition key IDs in
NATS components can be initial-
ized and new IDs can be regis-
tered.ÐÐÐÐÐ x Ð
PIN
INITIALIZA-
TIONNavigation system will be locked
when the vehicle's owner enters
the wrong PIN five consecutive
times.
To release the lock, use ªPIN INI-
TIALIZATIONº.ÐÐÐÐÐÐ x
NAVI ID
INITIALIZA-
TIONIn nomal times regulation codes are
being communicated between Navi-
gation Control Unit and Dongle
Control Unit.
Use ªNAVI ID INITIALIZATIONº to
match the codes when either one
has been replaced due to break-
down or etc.ÐÐÐÐÐÐ x
x: Applicable
*1: NATS (Nissan Anti-Theft System)
*2: For models with Euro-OBD system
CONSULT-II CHECKING SYSTEM
Function and System Application
GI-35

NEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM
Malfunction indicator lamp MIL Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel ratio control solenoid valve
Multiport fuel injection system MFI system Fuel injection control
Nonvolatile random access memory NVRAM ***
On board diagnostic system OBD system Self-diagnoses
Open loop OL Open loop
Oxidation catalyst OC Catalyst
Oxidation catalytic converter system OC system ***
Oxygen sensor O2S Exhaust gas sensor
Park position switch *** Park switch
Park/neutral position switch PNP switch Park/neutral switch
Inhibitor switch
Neutral position switch
Periodic trap oxidizer system PTOX system ***
Positive crankcase ventilation PCV Positive crankcase ventilation
Positive crankcase ventilation valve PCV valve PCV valve
Powertrain control module PCM ***
Programmable read only memory PROM ***
Pulsed secondary air injection control
solenoid valvePAIRC solenoid valve AIV control solenoid valve
Pulsed secondary air injection system PAIR system Air induction valve (AIV) control
Pulsed secondary air injection valve PAIR valve Air induction valve
Random access memory RAM ***
Read only memory ROM ***
Scan tool ST ***
Secondary air injection pump AIR pump ***
Secondary air injection system AIR system ***
Sequential multiport fuel injection system SFI system Sequential fuel injection
Service reminder indicator SRI ***
ISO 15031-2 TERMINOLOGY LIST
ISO 15031-2 Terminology List (Cont'd)
GI-52

HEATER &
AIR CONDITIONER
SECTION
HA
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............2
Precautions for Working with HFC-134a (R-134a) .....2
General Refrigerant Precautions .................................2
Precautions for Refrigerant Connection ......................3
Precautions for Servicing Compressor ........................5
Precautions for Service Equipment .............................6
Wiring Diagrams and Trouble Diagnosis .....................8
PREPARATION...............................................................9
Special Service Tools ..................................................9
HFC-134a (R-134a) Service Tools and
Equipment .................................................................. 11
DESCRIPTION...............................................................13
Refrigeration System .................................................13
CSV613 Variable Displacement Compressor............14
Component Layout ....................................................18
Control Operation ......................................................19
Discharge Air Flow.....................................................20
System Description ....................................................21
TROUBLE DIAGNOSES................................................22
Component Location..................................................22
Wiring Diagram - Heater............................................24
Circuit Diagram - Air Conditioner...............................26
Wiring Diagram - A/C, M - .........................................27
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................33
Operational Check .....................................................34
Intake Door ................................................................36
Mode Door .................................................................40Air Mix Door ...............................................................42
Max Hot Door (For Scandinavia and Cold Spec
Models) ......................................................................44
Blower Motor..............................................................48
Magnet Clutch............................................................55
Insufficient Cooling ....................................................68
Insufficient Heating ....................................................76
Noise ..........................................................................77
SERVICE PROCEDURE................................................78
HFC-134a (R-134a) Service Procedure ....................78
Maintenance of Lubricant Quantity in
Compressor ...............................................................80
Compressor ...............................................................83
Compressor Clutch - CSV613 (CALSONIC
make) .........................................................................84
Heater & Cooling Unit (Heater Core) ........................88
A/C Evaporator ..........................................................88
Blower Unit ................................................................89
Refrigerant Lines .......................................................91
Belt .............................................................................95
Idle Air Control Valve (IACV) - Auxiliary Air
Control (AAC) Valve ..................................................96
Ventilation Air Filter ....................................................96
SERVICE DATA AND SPECIFICATIONS (SDS).........97
Compressor ...............................................................97
Lubricant ....................................................................97
Refrigerant .................................................................97
Engine Idling Speed (When A/C is On).....................97
Belt Tension ...............................................................97

+When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for
connection.
+Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
+Thoroughly remove moisture from the refrigeration system before charging the refrigerant.
+Always replace used O-rings.
+When connecting tube, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.
Lubricant name: Nissan A/C System Oil Type R for DKV-11G compressor
Part number: KLH00-PAGR0
Lubricant name: Nissan A/C System Oil Type S for CSV613 compressor
Part number: KLH00-PAGS0
+O-ring must be closely attached to dented portion of tube.
+When replacing the O-ring, be careful not to damage O-ring and tube.
+Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.
+After connecting line, conduct leak test and make sure that there is no leakage from connections.
When the gas leaking point is found, disconnect that line and replace the O-ring. Then tighten
connections of seal seat to the specified torque.
RHA861F
Precautions for Servicing CompressorNJHA0116+Plug all openings to prevent moisture and foreign matter from entering.
+When the compressor is removed, store it in the same position as it is when mounted on the car.
+When replacing or repairing compressor, follow ªMaintenance of Lubricant Quantity in Compres-
sorº exactly. Refer to HA-80.
+Keep friction surfaces between clutch and pulley clean. If the surface is contaminated, with
lubricant, wipe it off by using a clean waste cloth moistened with thinner.
+After compressor service operation, turn the compressor shaft by hand more than five turns in
both directions. This will equally distribute lubricant inside the compressor. After the compressor
is installed, let the engine idle and operate the compressor for one hour.
+After replacing the compressor magnet clutch, apply voltage to the new one and check for normal
operation.
PRECAUTIONS
Precautions for Refrigerant Connection (Cont'd)
HA-5

Operational Check=NJHA0130The purpose of the operational check is to confirm that the system
operates properly.
CONDITIONS:NJHA0130S01+Engine running and at normal operating temperature.
NHA374
PROCEDURE:NJHA0130S021. Check BlowerNJHA0130S02011. Turn fan switch to 1-speed.
Blower should operate on 1-speed.
2. Then turn fan switch to 2-speed, and continue checking blower
speed until all speeds are checked.
3. Leave blower on 4-speed.
If NG, go to trouble diagnosis procedure for blower motor (HA-48).
If OK, continue with next check.
NHA375
2. Check Discharge AirNJHA0130S02021. Turn mode control knob to each position.
RHA654FK
2. Confirm that discharge air comes out according to the air dis-
tribution table at left.
Refer to ªDischarge Air Flowº, HA-20.
If NG, go to trouble diagnosis procedure for mode door motor
(HA-40).
If OK, continue with next check.
TROUBLE DIAGNOSES
Operational Check
HA-34