check engine light NISSAN PICK-UP 1998 User Guide

CONSULT Reference Value in Data Monitor
Mode
Remarks:
lSpecification data are reference values.
lSpecification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data
in spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the
ECM according to the signals input from the camshaft position sensor and other ignition timing related sensors.
lIf the real-time diagnosis results are NG and the on board diagnostic system results are OK when diagnosing the mass air flow
sensor, first check to see if the fuel pump control circuit is normal.
MONITOR ITEM CONDITION SPECIFICATION
CMPScRPM (POS)
lTachometer: ConnectlRun engine and compare tachometer indication with the CONSULT value.Almost the same speed as the CON-
SULT value.
MAS AIR/FL SE
lEngine: After warming uplAir conditioner switch: ``OFF''lShift lever: Neutral positionlNo-loadIdle 1.3 - 1.7V
2,500 rpm 1.7 - 2.1V
COOLAN TEMP/S
lEngine: After warming up More than 70ÉC (158ÉF)
O2 SEN
lEngine: After warming up Maintaining engine speed at 2,000 rpm0 - 0.3V«0.6 - 1.0V
M/R F/C MNTRLEAN«RICH
Changes more than 5 times
during 10 seconds.
VHCL SPEED SE
lTurn drive wheels and compare speedometer indication with the CONSULT
valueAlmost the same speed as
the CONSULT value
BATTERY VOLT
lIgnition switch: ON (Engine stopped) 11 - 14V
THRTL POS SEN
lIgnition switch: ON
(Engine stopped)Throttle valve: fully closed 0.35 - 0.65V
Throttle valve: fully opened Approx. 4.0V
START SIGNAL
lIgnition switch: ON®START®ON OFF®ON®OFF
CLSD THL/POSI
lIgnition switch: ON
(Engine stopped)Throttle valve: Idle position ON
Throttle valve: Slightly open OFF
AIR COND SIG
lEngine: After warming up, idle the
engineAir conditioner switch: ``OFF'' OFF
Air conditioner switch: ``ON''
(Compressor operates.)ON
P/N POSI SW
lIgnition switch: ONShift lever: Neutral position ON
Except above OFF
PW/ST SIGNAL
lEngine: After warming up, idle the
engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is turned ON
TROUBLE DIAGNOSIS Ð General DescriptionKA
EC-64

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:
lRead GI section, ``HOW TO READ WIRING DIAGRAMS''.
When you perform trouble diagnoses, read GI section, ``HOW TO FOLLOW FLOW CHART IN
TROUBLE DIAGNOSES'' and ``HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRI-
CAL INCIDENT''.
CONTENTS
PRECAUTIONS......................................................... 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models).............................................. 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models).............................................. 1
HARNESS CONNECTOR.......................................... 2
Description ............................................................. 2
STANDARDIZED RELAY.......................................... 3
Description ............................................................. 3
POWER SUPPLY ROUTING..................................... 5
Schematic .............................................................. 5
Wiring Diagram - POWER -................................... 6
Fuse ..................................................................... 13
Fusible Link .......................................................... 13
Circuit Breaker Inspection.................................... 13
GROUND DISTRIBUTION....................................... 14
BATTERY................................................................. 18
How to Handle Battery......................................... 18
Battery Test and Charging Chart......................... 21
Service Data and Specifications (SDS) ............... 25
STARTING SYSTEM............................................... 26
Wiring Diagram - START - .................................. 26
Trouble Diagnoses ............................................... 27
Construction ......................................................... 28
Removal and Installation ..................................... 30
Inspection ............................................................. 30
Assembly.............................................................. 32
Service Data and Specifications (SDS) ............... 33
CHARGING SYSTEM.............................................. 34
Wiring Diagram - CHARGE -/Gasoline Engine ... 34
Wiring Diagram - CHARGE -/Diesel Engine ....... 35Trouble Diagnoses ............................................... 36
Construction ......................................................... 38
Removal and Installation ..................................... 39
Disassembly ......................................................... 39
Inspection ............................................................. 39
Assembly.............................................................. 40
Service Data and Specifications (SDS) ............... 41
COMBINATION SWITCH........................................ 42
Check ................................................................... 42
Replacement ........................................................ 43
HEADLAMP - Conventional Type -....................... 44
Wiring Diagram - H/LAMP -/LHD Models ............ 44
Wiring Diagram - H/LAMP -/RHD Models ........... 46
Trouble Diagnoses ............................................... 48
Bulb Replacement................................................ 49
Aiming Adjustment ............................................... 49
Low Beam ............................................................ 50
HEADLAMP - Daytime Light System -................. 51
System Description .............................................. 51
Schematic ............................................................ 53
Wiring Diagram - DTRL - ..................................... 54
Trouble Diagnoses ............................................... 57
Bulb Replacement................................................ 57
Aiming Adjustment ............................................... 57
HEADLAMP - Dim-dip Lamp System -................. 58
System Description .............................................. 58
Schematic ............................................................ 58
Wiring Diagram - DIMDIP -.................................. 59
Trouble Diagnoses ............................................... 62
Bulb Replacement................................................ 62
Aiming Adjustment ............................................... 62
EL

EARTH CONNECT TO CONN. NO. CELL CODE
M1/M54 ACCESSORY RELAY (In fuse block) M14 EL-POWER
AIR BAG DIAGNOSIS SENSOR UNIT (4WD
models)M110 RS-SRS
ASHTRAY ILLUMINATION M34 EL-ILL
BLOWER RELAY (In fuse block) M14 EL-POWER
CHECK CONNECTOR (NA engine) M12 EC-CHOKE
CHECK CONNECTOR (Z engine) M13 EC-CHOKE
CIGARETTE LIGHTER SOCKET M37 EL-CIGAR
COMBINATION FLASHER UNIT M15 EL-TURN
DOOR LOCK TIMER M51 EL-D/LOCK
DOOR SWITCH DRIVER SIDE (For Europe) M118 EL-BUZZER EL-MULTI
ECM (ENGINE CONTROL MODULE) M66 EC-GLOW EC-PLA EC-EGRC/V
FAN SWITCH ILLUMINATION (Except for
Europe and Australia)M403 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH ILLUMINATION (For Europe and
Australia)M40 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH (Except for Europe and Australia) M404 EC-FIPOT HA-HEATER HA-A/C,M
FAN SWITCH (For Europe and Australia) M39 HA-HEATER HA-A/C,M
FRONT SEAT LH M119 EL-H/SEAT
FRONT SEAT RH M122 EL-H/SEAT
FRONT WIPER AMPLIFIER
(RHD models without KA engine and LHD mod-
els)M220 EL-WIPER
FRONT WIPER AND WASHER SWITCH M28 EL-WIPER
FRONT WIPER MOTOR
(RHD models without KA engine and LHD mod-
els)M221 EL-WIPER
FUEL FILTER SWITCH (LHD models with die-
sel engine)M259 EL-WARN EL-BUZZER
FUEL PUMP CONTROL MODULE M22 EC-FPCM
FUEL RETURN CONTROL SOLENOID VALVE
(LHD models with NA engine)M257 EC-F/RTN
GLOW CONTROL UNIT
(TD27 engine except for cold areas and QD
engine)M29 EC-GLOW EC-PLA
GLOW CONTROL UNIT (TD27 engine for cold
areas)M30 EC-GLOW EC-PLA
GLOW RELAY-1 (LHD models with diesel
engine except for Europe)M253 EC-GLOW
GLOW RELAY-2 (TD27 engine for cold areas) M256 EC-GLOW
HAZARD SWITCH M41 EL-TURN EL-ILL
HEADLAMP WASHER SWITCH M70 EL-ILL EL-HLC
HEATED SEAT SWITCH LH M602 EL-H/SEAT
HEATED SEAT SWITCH RH M603 EL-H/SEAT
IACV-FICD SOLENOID VALVE (KA engine) M203 EC-FICD HA-A/C,M
IGNITION RELAY (In fuse block) M14 EL-POWER
MULTI-REMOTE CONTROL RELAY-3 M706 EL-MULTI
MULTI-REMOTE CONTROL RELAY-4 M707 EL-MULTI
MULTI-REMOTE CONTROL UNIT M703 EL-MULTI
POWER WINDOW RELAY M9 EL-WINDOW
REAR WINDOW DEFOGGER SWITCH M42 EL-DEF
SEAT BELT SWITCH M109 EL-WARN
SPIRAL CABLE (2WD models with air bag) M26 RS-SRS
COMBINATION METER (4WD WARNING
LAMP)N6 EL-WARN
COMBINATION METER (ABS WARNING
LAMP)N6 BR-ABS EL-WARN
GROUND DISTRIBUTION
EL-14

Electrical Components Inspection
FUEL WARNING LAMP SENSOR CHECK
lIt will take a short time for the bulb to light.
OIL PRESSURE SWITCH CHECK
Oil pressure
kPa (bar, kg/cm2, psi)Continuity
Engine startMore than 10 - 20
(0.10 - 0.20, 0.1 - 0.2,1-3)NO
Engine stopLess than 10 - 20
(0.10 - 0.20, 0.1 - 0.2,1-3)YES
Check the continuity between the terminals of oil pressure switch
and body ground.
DIODE CHECK
lCheck continuity using an ohmmeter.
lDiode is functioning properly if test results are as shown in
the figure at left.
NOTE: Specification may vary depending on the type of
tester. Before performing this inspection, be sure to
refer to the instruction manual for the tester to be
used.
lDiodes for warning lamps are built into the combination meter
printed circuit.
GEL191
MEL425F
SEL901F
GEL192
WARNING LAMPS
EL-116

Trouble Diagnoses
WORK FLOW
CHECK IN*Lighting-up mode of MIL (Malfunction Indicator Lamp)
For single malfunction of NATS: Blinking
For dual malfunctions of NATS and an engine-related part:
Stays ON
For single malfunction of an engine-related part: Stays ON Listen to customer complaints or request. (Get symptoms)
TROUBLE KEY SERVICE REQUEST (Additional key ID registration)
.Verify the MIL*.INITIALISATION
(Refer to CONSULT operation
manual NATS V2.0.)
cUsing the CONSULT program card for NATS check the ``SELF-
DIAG RESULTS'' with CONSULT.b
Self-diagnostic results referring to NATS, but no information
about engine self-diagnostic results is displayed on CONSULT.Self-diagnostic results referring to NATS and ``DON'T ERASE
BEFORE CHECKING ENG DIAG'' are displayed on CONSULT.
(This means that engine trouble data has been detected in
ECM.)
Turn ignition switch ``OFF''.
Repair NATS.
(If necessary, carry out ``SELF-FUNCTION CHECK'' or ``C/U
INITIALISATION'' with CONSULT.)Turn ignition switch ``OFF''.
Turn ignition switch ``ON''.Repair NATS.
(If necessary, carry out ``SELF-FUNCTION CHECK'' or ``C/U
INITIALISATION'' with CONSULT.)
Erase the NATS ``SELF-DIAG RESULTS'' by using CONSULT.
(Touch ``ERASE''.)Do not erase the NATS ``SELF-DIAG RESULTS'' by using
CONSULT.
Start the engine.
Start the engine.Check the NATS ``SELF-DIAG RESULTS'' by using CONSULT.
OKNG
NGVerify no blinking of MIL*.
OKTurn ignition switch ``OFF''.
CHECK OUTCheck the engine ``SELF-DIAG RESULTS'' with CONSULT by
using the CONSULT generic program card.
(Engine diagnostic software included)b
Perform running test with CONSULT in engine ``SELF-DIAG
RESULTS'' mode.Repair ECCS. (Refer to EC section.)
NGVerify ``NO FAILURE'' displayed on the CONSULT screen.
OKTurn ignition switch ``ON''.
CHECK OUTErase the engine ``SELF-DIAG RESULTS'' by using CONSULT.
(Touch ``ERASE''.)
Start the engine.
.
.
.
..
.
..
..
..
.
..
..
..
..
..
..
.
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
EL-188

SYMPTOM CHART
SYMPTOMDisplayed ``SELF-DIAG RESULTS''
on CONSULT screen.DIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)
lMIL blinkinglEngine will startIMMUPROCEDURE 1
(EL-190)IMMU
ECMPROCEDURE 2
(EL-190)ECM
lMIL blinkinglEngine does not startCHAIN OF ECM-IMMUPROCEDURE 3
(EL-191)Open circuit in battery voltage line
of IMMU circuit
Open circuit in ignition line of IMMU
circuit
Open circuit in ground line of IMMU
circuit
Open or short circuit in communica-
tion line between IMMU and ECM
ECM
IMMU
DIFFERENCE OF KEYPROCEDURE 4
(EL-193)Unregistered key
IMMU
CHAIN OF IMMU-KEYPROCEDURE 5
(EL-194)Malfunction of key ID chip
IMMU
ID DISCORD, IMM-ECMPROCEDURE 6
(EL-194)System initialisation has not yet
been completed.
ECM
IMMU
MINGLE NOISEPROCEDURE 7
(EL-195)Noise interference in communica-
tion line
LOCK MODEPROCEDURE 8
(EL-196)LOCK MODE
lMIL staying ONDON'T ERASE BEFORE CHECK-
ING ENG DIAGWORK FLOW
(EL-188)Engine trouble data and NATS
trouble data have been detected in
ECM.
lSecurity indicator does not oper-
ate properly.
lEngine starts properly.ÐPROCEDURE 9
(EL-197)Security indicator circuit
Security indicator
Continuation of initialisation mode
*Lighting-up mode of MIL (Malfunction Indicator Lamp)
For single malfunction of NATS: Blinking
For dual malfunctions of NATS and an engine-related part: Stays ON
For single malfunction of an engine-related part: Stays ON
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
Trouble Diagnoses (Cont'd)
EL-189

Trouble Diagnoses
WORK FLOW
CHECK IN
Listen to customer complaints or request. (Get symptoms.)
TROUBLEKEY SERVICE REQUEST (Additional key ID registration)
.Verify the lighting of security ind. with ignition switch in ``ON''
position.IMMU INITIALISATION
[Refer to CONSULT operation
manual NATS V2.0 (Diesel).]
cUsing the CONSULT program card for NATS check the ``SELF-
DIAG RESULTS'' with CONSULT.
Information about self-diagnostic results referring to NATS is
displayed on CONSULT.
Turn ignition switch ``OFF''.
Repair NATS.
(If necessary, carry out ``SELF-FUNCTION CHECK'' or ``INI-
TIALISATION'' with CONSULT.)
Turn ignition switch ``ON''.
Erase the NATS ``SELF-DIAG RESULTS'' by using CONSULT.
(Touch ``ERASE''.)
Turn ignition switch ``OFF''.
Wait approx. 5 seconds and turn ignition switch ``ON''.
NGVerify no lighting of security ind.
OK
CHECK OUT
.
.
.
.
.
.
.
.
.
.
.
.
NATS (Nissan Anti-Theft System)/Diesel engine
EL-205

DIAGNOSTIC PROCEDURE 8
``NATS SECURITY IND. DOES NOT LIGHT UP''
CHECK INDICATOR POWER SUPPLY
CIRCUIT.
Check voltage between security indicator
terminal
V1and ground.
Battery voltage should exist.
OK
cNG
Check the following.
l7.5A fuse (No.6,
located in the fuse block)
lHarness for open or
short between fuse and
security indicator
Check security indicator.
OK
cNG
Replace security indicator.
PERFORM INITIALISATION.
Perform IMMU initialisation with CON-
SULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(Diesel)''.
Does security indicator operate after
initialisation has completed?
Yes
cNo
Check harness for open or
short between NATS
IMMU and security indica-
tor.
END
SEL638V.
.
.
NATS (Nissan Anti-Theft System)/Diesel engine
Trouble Diagnoses (Cont'd)
EL-216

Incident Simulation Tests
INTRODUCTION
Sometimes the symptom is not present when the vehicle is brought in for service. If possible, re-create the
conditions present at the time of the incident. Doing so may help avoid a No Trouble Found Diagnosis. The
following section illustrates ways to simulate the conditions/environment under which the owner experiences
an electrical incident.
The section is broken into the six following topics:
lVehicle vibration
lHeat sensitive
lFreezing
lWater intrusion
lElectrical load
lCold or hot start up
Get a thorough description of the incident from the customer. It is important for simulating the conditions of
the problem.
VEHICLE VIBRATION
The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle
with A/C on). In such a case, you will want to check for a vibration related condition. Refer to the illustra-
tion below.
Connectors & harness
Determine which connectors and wiring harness would affect the electrical system you are inspecting.Gen-
tlyshake each connector and harness while monitoring the system for the incident you are trying to dupli-
cate. This test may indicate a loose or poor electrical connection.
Hint
Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector ter-
minals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs
intermittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean
the terminals on related connectors in the system.
Sensors & relays
Gentlyapply a slight vibration to sensors and relays in the system you are inspecting.
This test may indicate a loose or poorly mounted sensor or relay.
SGI839
HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT
GI-22

***: Not applicable
NEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM
Evaporative emission system EVAP system Evaporative emission control system
Exhaust gas recirculation valve EGR valve EGR valve
Exhaust gas recirculation control-BPT valve EGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid valve EGRC-solenoid valve EGR control solenoid valve
Exhaust gas recirculation temperature sensor
EGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable read
only memoryFEEPROM ***
Flash erasable programmable read only memory FEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid valve *** PRVR control solenoid valve
Fuel trim FT ***
Heated Oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control valve IACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control solenoid
valveIACV-idle up control solenoid
valveIdle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
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 ***
SAE J1930 TERMINOLOGY LIST
SAE J1930 Terminology List (Cont'd)
GI-56