Vacuum solenoid MITSUBISHI MONTERO 1998 Service Manual
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 1998, Model line: MONTERO, Model: MITSUBISHI MONTERO 1998Pages: 1501, PDF Size: 25.81 MB
Page 26 of 1501
![MITSUBISHI MONTERO 1998 Service Manual \
\
\
\
\
\
\
ABBREVIATION DEFINITION](/img/19/57333/w960_57333-25.png "MITSUBISHI MONTERO 1998 Service Manual \
\
\
\
\
\
\
ABBREVIATION DEFINITION")
\
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
B/P Backpressure
BAC By-Pass Air Control
BAP Barometric Absolute Pressure Sensor
BARO Barometric
BBDC Before Bottom Dead Center
BCM Body Control Module
BDC Bottom Dead Center
BHP Brake Horsepower
BLK Black
BLU Blue
BMAP Barometric & Manifold Absolute Pressure Sensor
BOO Brake On-Off Switch
BP Barometric Pressure sensor
BPS Barometric Pressure Sensor
BPT Backpressure Transducer
BRN Brown
BTDC Before Top Dead Center
BTU British Thermal Unit
BVSV Bimetallic Vacuum Switching Valve
Baro. Barometric
Batt. Battery
Bbl. Barrel (Example: 4-Bbl.)
Blst. Ballast
Blwr. Blower
Brkr. Breaker
\
\
\
\
\
\
\
\f
"C" ABBREVIATION TABLE
"C" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
C Celsius (Degrees)
C(3) I Computer Controlled Coil Ignition
C(4) Computer Controlled Catalytic Converter
CANP Canister Purge solenoid
CARB California Air Resources Board
CAT Catalytic Converter
CB Circuit Breaker
CBD Closed Bowl Distributor
CBVV Carburetor Bowl Vent Valve
cc Cubic Centimeter
CCC Computer Command Control
CCD Computer Controlled Dwell
CCM Central Control Module
CCO Converter Clutch Override
CCOT Cycling Clutch Orifice Tube
CCW Counterclockwise
CDI Capacitor Discharge Ignition
CEC Computerized Engine Control
CFI Central Fuel Injection
CID Cubic Inch Displacement
CID Cylinder Identification sensor
CIS Continuous Injection System
CIS-E Continuous Injection System-Electronic
CKT Circuit
CLR Clear
CNG Compressed Natural Gas
Page 28 of 1501
![MITSUBISHI MONTERO 1998 Service Manual \
\b\
\
\
\
\
\
EAC Electric Assist Choke](/img/19/57333/w960_57333-27.png "MITSUBISHI MONTERO 1998 Service Manual \
\b\
\
\
\
\
\
EAC Electric Assist Choke")
\
\b\
\
\
\
\
\
EAC Electric Assist Choke
EACV Electric Air Control Valve
EBCM Electronic Brake Control Module
ECA Electronic Control Assembly
ECAT Electronically Controlled Automatic Transaxle
ECM Electronic Control Module
ECT Engine Coolant Temperature Sensor
ECU Electronic Control Unit or Engine Control Unit
EDF Electric Drive Fan relay assembly
EDIS Electronic Distributorless Ignition System
EEC Electronic Engine Control
EECS Evaporative Emission Control System
EEPROM Electronically Erasable PROM
EFE Early Fuel Evaporation
EFI Electronic Fuel Injection
EGO Exhaust Gas Oxygen sensor (see HEGO)
EGR Exhaust Gas Recirculation system
EGRC EGR Control solenoid or system
EGRV EGR Vent solenoid or system
EMR Emission Maintenance Reminder Module
ESA Electronic Spark Advance
ESC Electronic Spark Control
EST Electronic Spark Timing
ETR Emergency Tensioning Retractor
EVAP Fuel Evaporative System
EVIC Electronic Vehicle Information Center
EVO Electronic Variable Orifice
EVP EGR Valve Position Sensor
EVR EGR Valve Regulator
EVRV Electronic Vacuum Regulator Valve
Elect. Electronic
Eng. Engine
Evap. Evaporative
Exc. Except
\
\
\
\
\
\
\
\f
"F" ABBREVIATION TABLE
"F" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
F Fahrenheit (Degrees)
F/B Fuse Block
FBC Feedback Carburetor
FI Fuel Injector or Fuel Injection
FICD Fast Idle Control Device
FIPL Fuel Injector Pump Lever
FP Fuel Pump
FPM Fuel Pump Monitor
FPR-VSV Fuel Pressure Regulator Vacuum Switching Valve
FWD Front Wheel Drive
Fed. Federal
Ft. Lbs. Foot Pounds
\
\
\
\
\
\
\
\f
"G" ABBREVIATION TABLE
"G" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
Page 29 of 1501
![MITSUBISHI MONTERO 1998 Service Manual \
\b\
\
\
\
\
\
g grams](/img/19/57333/w960_57333-28.png "MITSUBISHI MONTERO 1998 Service Manual \
\b\
\
\
\
\
\
g grams")
\
\b\
\
\
\
\
\
g grams
GND or GRND Ground
GRN Green
GRY Gray
Ga. Gauge
Gals. gallons
Gov. Governor
\
\
\
\
\
\
\
\f
"H" ABBREVIATION TABLE
"H" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
H/D Heavy Duty
HAC High Altitude Compensation
HC Hydrocarbons
HEDF High Speed Electro Drive Fan relay or circuit
HEGO Heated Exhaust Gas Oxygen Sensor
HEGOG HEGO Ground circuit
HEI High Energy Ignition
HLDT Headlight
HO High Output
HP High Performance
HSC High Swirl Combustion
HSO High Specific Output
HTR Heater
HVAC Heating
Headlt. Headlight
Hg Mercury
Hgt. Height
Htr. Heater
Hz Hertz (Cycles Per Second)
\
\
\
\
\
\
\
\f
"I" ABBREVIATION TABLE
"I" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
I.D. Inside Diameter
IAC Idle Air Control
IACV Idle Air Control Valve
IC Integrated Circuit
ID Identification
IDM Ignition Diagnostic Monitor
IGN Ignition system or circuit
ILC Idle Load Compensator
In. Hg Inches of Mercury
INCH Lbs. Inch Pounds
INFL REST Inflatable Restraint
INJ Injector or Injection
IP Instrument Panel
IPC Instrument Panel Cluster
ISA Idle Speed Actuator
ISC Idle Speed Control
ISS Idle Stop Solenoid
ITS Idle Tracking Switch
IVSV Idle Vacuum Switching Valve
Page 33 of 1501
RVB Rear Vacuum Break
RWAL Rear Wheel Anti-Lock Brake
RWD Rear Wheel Drive
Recirc. Recirculate or Recirculation
Reg. Regulator
Rly. Relay
\
\
\
\
\
\
\
\f
"S" ABBREVIATION TABLE
"S" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
SAW Spark Angle Word
SBC Single Bed Converter
SBEC Single Board Engine Controller
SC Super Charged
SCC Spark Control Computer
SCS Air Suction Control Solenoid
SDM Supplemental Restraint System Diagnostic Module
SDU SRS Diagnostic Unit
SEN Sensor
SES Service Engine Soon
SFI Sequential (Port) Fuel Injection
SIG RTN Signal Return circuit
SIL Shift Indicator Light
SIR Supplemental Inflatable Restraint
SMEC Single Module Engine Controller
SOHC Single Overhead Cam
SOL or Sol. Solenoid
SPFI Sequential Port Fuel Injection
SPK Spark Control
SPOUT Spark Output Signal
SRS Supplemental Restraint System (Air Bag)
SS 3/4-4/3 Shift Solenoid circuit
SSI Solid State Ignition
STAR Self-Test Automatic Readout
STI Self Test Input circuit
STO Self-Test Output
SUB-O2 Sub Oxygen Sensor
Sen. or Sens. Sensor
Sol. Solenoid
Sprchg. Supercharger
Strg. Steering
Susp. Suspension
Sw. Switch
Sys. System
\
\
\
\
\
\
\
\f
"T" ABBREVIATION TABLE
"T" ABBREVIATION TABLE \
\
\
\
\
\
\
ABBREVIATION DEFINITION
\
\b\
\
\
\
\
\
T.V. Throttle Valve
TAB Thermactor Air By-Pass
TAC Thermostatic Air Cleaner
TAD Thermactor Air Diverter
TAN Tan
TBI Throttle Body Injection
Page 182 of 1501
Major Control Systems/Devices ..... PCV, EVAP, (5) TWC, ( 4) EGR,
FR, SPK, ( 6) ( 7) HO2S, CEC, MIL
Components/Other Related Devices ........... EVAP-CPCS, EVAP-VC,
EVAP-VSOL, ( 4) EGR-SOL, ( 4) EGR-VCV, SPK-CC
Montero Sport
2.4L 4-Cyl. SFI
Major Control Systems/Devices ..... PCV, EVAP, TWC, FR, ( 4) EGR,
SPK, ( 1) HO2S, CEC, MIL
Components/Other Related Devices ........... EVAP-CPCS, EVAP-VC,
EVAP-VSOL, ( 4) EGR-SOL, ( 4) EGR-VCV, SPK-CC
3.0L V6 SFI
Major Control Systems/Devices ..... PCV, EVAP, TWC, (4) EGR, FR,
SPK, ( 6) ( 7) HO2S, CEC, MIL
Components/Other Related Devices ........... EVAP-CPCS, EVAP-VC,
EVAP-VCS, EVAP-VSOL, ( 4) EGR-VCS, SPK-CC
3000GT
3.0L V6 SFI
Non-Turbo
Major Control Systems/Devices ........ PCV, EVAP, (8) TWC, FR,
EGR, SPK, ( 9) HO2S, CEC, MIL
Components/Other Related Devices ......... EVAP-CPCS, EVAP-VC,
EGR-SOL, EGR-VCV, SPK-CC
Turbo
Major Control Systems/Devices ........ PCV, EVAP, (8) TWC, FR,
EGR, SPK, ( 9) HO2S, CEC, MIL
Components/Other Related Devices ........ EVAP-CKV, EVAP-CPCS,
EVAP-VC, EGR-SOL, EGR-VCV, SPK-CC
( 1) - Equipped with 2 HO2Ss.
( 2) - Equipped with 2 EVAP-CKVs.
( 3) - California equipped with 2 TWCs.
( 4) - Federal.
( 5) - California equipped with 3 TWCs.
( 6) - Federal equipped with 2 HO2Ss.
( 7) - California equipped with 4 HO2Ss.
( 8) - Equipped with 3 TWCs.
( 9) - Equipped with 4 HO2Ss.
\
\
\
\
\
\
\
NOTE: California or Federal refers to installed emissions
equipment. California emissions models may be available in
all states.
APPLICATION ABBREIVEATIONS
APPLICATION ABBREIVEATIONS TABLE \
\
\
\
\
\
\
Application Abbreiveation
CEC .................................... Computerized Engine Control
EGR ...................................... Exhaust Gas Recirculation
EGR-CS ........................................ EGR Control Solenoid
EGR-SOL ............................................... EGR Solenoid
EGR-TS ..................................... EGR Transducer Solenoid
EGR-VCV ................................... EGR Vacuum Control Valve
EVAP ....................................... Fuel Evaporative System
EVAP-CKV .......................................... EVAP Check Valve
EVAP-CPCS ..................... EVAP Canister Purge Control Solenoid
EVAP-CPCV ........................ EVAP Canister Purge Control Valve
EVAP-VC ........................................ EVAP Vapor Canister
EVAP-VCS .............................. EVAP Vacuum Control Solenoid
EVAP-VSOL ................................ EVAP Ventilation Solenoid
Page 323 of 1501
Main Switch
1) In each switch position, continuity should be present
between terminals No. 2 and 7 for switch illumination. See Fig. 8.
When switch is moved to Neutral position, continuity should be present
between terminals No. 1 and 4.
2) When switch is moved to ON position, continuity should be
present between terminals No. 4 and 5. Connect battery voltage to
terminal No. 5 and ground terminal No. 4.
3) Battery voltage should be present on terminal No. 1 when
main switch is moved to ON position. Replace main switch if it does
not test as specified.
PARK/NEUTRAL SWITCH TEST
Disconnect switch connector. Shift transmission into Neutral
position. Continuity should be present between terminals No. 5
(Black/Blue wire) and No. 6 (Blue/Black wire). See Fig. 7. If
continuity is not present, adjust park/neutral switch. If switch is
adjusted properly, replace switch.
VACUUM PUMP TEST
1) Disconnect vacuum pump connector A-105. Resistance should
be 50-60 ohms between terminals No. 1 and 2 and terminals No. 1 and 3.
See Fig. 6 . Ensure solenoid valve makes operating noise when battery
voltage is applied between terminals No. 1 and 2 and terminals No. 1
and 3.
2) If solenoid valve does not operate, replace vacuum pump
assembly. Apply battery voltage and ground between terminals No. 1 and
4. Motor should operate. Replace vacuum pump if motor does not
operate.
VEHICLE SPEED SENSOR TEST
Remove speed sensor from transmission. Connect speed sensor,
resistor (3000-10,000 ohms) and battery. See Fig. 34. Using a
voltmeter, ensure voltage pulses on and off 4 times per revolution of
speedometer shaft. Replace sensor if voltage is not as specified.
Fig. 34: Testing Vehicle Speed Sensor
Courtesy of Mitsubishi Motor Sales of America
SELF-DIAGNOSTIC SYSTEM
Page 415 of 1501
FLANGES
FLEX PLATES
FLUID LEVEL INDICATORS
FLUIDS AND LUBRICANTS
FLYWHEELS
FORCE MOTORS
GUIDES
HALF SHAFTS
HOSES, LINES AND TUBES
HOUSINGS (BELL, CASE, TAIL (EXTENSION) AND AUXILIARY)
INTERMEDIATE SHAFT SUPPORT BEARINGS
KEY INTERLOCK SYSTEMS
LIMITED SLIPS
LINES
LINKAGES (EXTERNAL)
LOCKING HUB ASSEMBLIES
LOCKING HUB CONTROL KNOBS
LUBRICANTS
METAL-CLAD SEALS
METALASTIC JOINTS
MODULATOR PINS
MODULATORS
MOUNTS (ENGINE, TRANSAXLE AND TRANSMISSION)
ODOMETER DRIVES (MECHANICAL)
ODOMETER HEADS (MECHANICAL)
OIL PANS
PANS
PILOT HOLES
PRESSURE PLATES
PRESSURE SWITCHES
RACES
RUBBER JOINTS (METALASTIC)
SCREENS
SEALS
SEALS (METAL-CLAD)
SELECTOR INTERLOCK SYSTEMS
SERVOS
SHIFT INTERLOCK SYSTEMS (SELECTOR AND KEY INTERLOCK SYSTEMS)
SENSORS
SIDE COVERS
SLIP YOKES
SOLENOIDS
SPEED SENSORS (ELECTRONIC WHEEL AND VEHICLE)
SPEEDOMETER-DRIVEN GEAR HOUSINGS
SPEEDOMETER/ODOMETER DRIVES (MECHANICAL)
SPEEDOMETER/ODOMETER HEADS (MECHANICAL)
SPEEDOMETERS AND ODOMETERS (ELECTRONIC)
SWITCHES
TONE WHEELS
TOOTHED RINGS (TONE WHEELS)
TORQUE CONVERTERS
TRANSAXLE MOUNTS
TRANSDUCERS (TRANSMISSION)
TRANSMISSION COOLERS
TRANSMISSION MOUNTS
TRANSMISSION PANS
TRANSMISSION RANGE INDICATORS (PRNDL)
TUBES
UNIVERSAL JOINTS (CARDON OR CROSS TYPE)
VACUUM CONTROLS
VACUUM HOSES
VACUUM MOTORS
VACUUM-OPERATED SWITCHES
Page 444 of 1501
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
(1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Inoperative includes intermittent operation or out of
specification.
( 3) - Follow OEM recommended adjustment procedures. Repair
or replace if out of specification.
\
\
\
\
\
\
\
SIDE COVERS
See TRANSMISSION PANS .
SLIP YOKES
See YOKES AND SLIP YOKES .
SOLENOIDS
See:
ACTUATORS (ELECTRICAL)
ACTUATORS (VACUUM)
SPEED SENSORS (ELECTRONIC WHEEL AND VEHICLE)
SPEED SENSOR (ELECTRONIC WHEEL AND VEHICLE) INSPECTION \
\
\
\
\
\
\
Condition Code Procedure
Air gap incorrect ....... B ....... ( 1) Require adjustment or
replacement.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware
threads damaged ........ A ... Require repair or replacement
of hardware.
Attaching hardware
threads stripped
(threads missing) ...... A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted ........ A ........... ( 2) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Contaminated ............ A ........... ( 3) Require repair or
replacement.
Inoperative ............. B ........... ( 4) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
Loose ................... A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Resistance out of
Page 458 of 1501
usage on specific models, see appropriate wiring diagram in
L - WIRING DIAGRAMS article. For theory and operation on each
output component, refer to system indicated after component.
Data Link Connector (DLC)
See SELF-DIAGNOSTIC SYSTEM .
EGR Control Solenoid Valve
See EXHAUST GAS RECIRCULATION (EGR) CONTROL under EMISSION
SYSTEMS.
Fuel Injectors
See FUEL CONTROL under FUEL SYSTEM.
Fuel Pressure Control Solenoid Valve (Turbo)
See FUEL DELIVERY under FUEL SYSTEM.
Fuel Pressure Regulator
See FUEL DELIVERY under FUEL SYSTEM.
Idle Air Control (IAC) Motor
See IDLE SPEED under FUEL SYSTEM.
Malfunction Indicator Light
See SELF-DIAGNOSTIC SYSTEM .
Power Transistor(s) & Ignition Coils
See IGNITION SYSTEMS .
Purge Control Solenoid Valve
See EVAPORATIVE CONTROL under EMISSION SYSTEMS.
Wastegate Control Solenoid Valve
See TURBOCHARGED ENGINES under AIR INDUCTION SYSTEM.
FUEL SYSTEM
FUEL DELIVERY
Electric fuel pump, located in gas tank, feeds fuel through
in-tank fuel filter, external fuel filter (located in engine
compartment) and fuel injector rail.
Fuel Pump
Fuel pump consists of a motor-driven impeller. Pump has an
internal check valve to maintain system pressure, and a relief valve
to protect fuel pressure circuit. Pump receives voltage supply from
MFI control relay.
Fuel Pressure Control Solenoid Valve (Turbo)
Valve prevents rough idle due to fuel percolation. On engine
restart, if engine coolant or intake air temperature reaches a preset
value, PCM applies voltage to fuel pressure control solenoid valve for
2 minutes after enginerestart. Valve will open, allowing atmospheric
pressure to be applied to fuel pressure regulator diaphragm. This
allows maximum available fuel pressure at injectors, enriching fuel
mixture and maintaining stable idle at high engine temperatures.
Fuel Pressure Regulator
Located on fuel injector rail, this diaphragm-operated relief
valve adjusts fuel pressure according to engine manifold vacuum.
As engine manifold vacuum increases (closed throttle), fuel
Page 460 of 1501
cylinder is on its exhaust stroke when plug fires.
HALL EFFECT IGNITION SYSTEM
This system is equipped with a Hall Effect distributor.
Shutter(s) attached to distributor shaft rotate through distributor
Hall Effect switch, also referred to as a Camshaft Position (CMP)
sensor, which contains a distributor pick-up (a Hall Effect device and
magnet). As shutter blade(s) pass through pick-up, magnetic field is
interrupted and voltage is toggled between high and low. PCM uses this
data along with Crankshaft Position (CKP) sensor data to control
ignition timing and injector pulse width to maintain optimum
driveability.
Power Transistor & Ignition Coil
Power transistor is mounted inside distributor with disc and
optical sensing unit. When ignition is on, ignition coil primary
circuit is energized. As distributor shaft rotates, disc rotates,
triggering optical sensing unit. PCM receives signals from optical
sensing unit. Signals are converted and sent to power transistor,
interrupting primary current flow and inducing secondary voltage.
IGNITION TIMING CONTROL SYSTEM
Ignition timing is controlled by PCM. PCM adjusts timing
based on various conditions such as engine temperature, altitude and
detonation.
EMISSION SYSTEMS
EXHAUST GAS RECIRCULATION (EGR) CONTROL
Federal Emissions (Non-Turbo)
To lower oxides of nitrogen (NOx) exhaust emissions, a non-
computer controlled exhaust gas recirculation system is used. EGR
operation is controlled by throttle body ported vacuum. Vacuum is
routed through vacuum control valve to prevent EGR operation at low
engine temperatures.
Spring pressure holds EGR valve closed during low vacuum
conditions (engine idling or wide open throttle). When vacuum pressure\
increases and overcomes EGR spring pressure, EGR valve is lifted to
allow exhaust gases to flow into intake manifold for combustion.
California Emissions & Turbo
PCM controls EGR operation by activating EGR control solenoid
valve according to engine load. When engine is cold, PCM signals EGR
control solenoid valve to deactivate EGR.
EGR Control Solenoid Valve
Valve denies or allows vacuum supply to EGR valve based on
PCM commands.
EVAPORATIVE CONTROL
Fuel evaporation system prevents fuel vapor from entering
atmosphere. System consists of special fuel tank with vapor separator
tanks (if equipped), vacuum relief filler cap, overfill limiter (2-wa\
y
valve), fuel check valve, thermovalve (if equipped), charcoal
canister, purge control valve, purge control solenoid valve, and
connecting lines and hoses.
Purge Control Solenoid Valve