1998 MITSUBISHI MONTERO center console

Mirage &
Montero Sport ... Behind Right Side Of Instrument Panel (Glove Box)\
Montero ..................................... Right Front Kick Panel
All Others ................................... Behind Center Console









\









\









\









\









\









\









\







NOTE: Components are grouped into 2 categories. The first category
covers INPUT DEVICES, which control or produce voltage
signals monitored by Powertrain Control Module (PCM). The
second category covers OUTPUT SIGNALS, which are components
controlled by PCM.
INPUT DEVICES
Vehicles are equipped with different combinations of input
devices. Not all input devices are used on all models. To determine
input device usage on specific models, see appropriate wiring diagram
in L - WIRING DIAGRAMS article. The following are available input
devices.
Air Conditioning Switch
When A/C is turned on, signal is sent to PCM. With engine at
idle, PCM increases idle speed through Idle Air Control (IAC) motor.
Airflow Sensor Assembly
Assembly is mounted inside air cleaner, and incorporates
barometric pressure sensor, intake air temperature sensor and volume
airflow sensor.
Barometric (BARO) Pressure Sensor
Sensor is incorporated into airflow sensor assembly. Sensor
converts barometric pressure to electrical signal, which is sent to
PCM. PCM adjusts air/fuel ratio and ignition timing according to
altitude.
Camshaft Position (CMP) Sensor
On SOHC engines equipped with a distributor, CMP sensor is
located in distributor. On Eclipse (Turbo) and DOHC V6 engines, sensor\
is located beside camshaft, in front of engine. On all other engines,
CMP sensor is a separate unit mounted in place of distributor. PCM
determines TDC based on pulse signals received from sensor, and then
controls MFI timing.
Closed Throttle Position (CTP) Switch
CTP switch is located in the Throttle Position (TP) sensor.
PCM senses whether accelerator pedal is depressed or not. High voltage
(open) or low voltage (closed) signal is input to PCM, which then
controls Idle Air Control (IAC) motor based on input signal.
Crankshaft Position (CKP) Sensor
CKP sensor is located in distributor on SOHC engines, except
1.5L 4-cylinder with California emissions. On DOHC 4-cylinder, DOHC V6
and 1.5L 4-cylinder engines with California emissions, CKP sensor is
located beside crankshaft, in front of engine. PCM determines
crankshaft position on pulse signals received from sensor, and then
controls MFI timing and ignition timing.
Engine Coolant Temperature (ECT) Sensor
ECT sensor converts coolant temperature to electrical signal
for use by PCM. PCM uses coolant temperature information to control
fuel enrichment when engine is cold.
Heated Oxygen Sensor (HO2S)

Headlight Relay In engine compartment
relay box.
Headlight Washer Relay On bracket, behind left side
of dash.
Horn Relay Left front of engine
compartment.
Ignition Key Hole Illumination Light
Timer Behind center console.
Intermittent Wiper Relay (Rear Wiper) In passenger compartment
relay box.
Intermittent Wiper Relay (Windshield
Wiper) Built-in to steering column
switch.
Power Window Relay In passenger compartment
relay box.
Starter Relay Behind center console.

Junction Block Behind left side of dash.
Passenger Compartment Relay Box Behind left side of dash.
Power Seat Relay Box Under driver's seat.









\









\









\









\









\









\









\







CONTROL UNITS









\









\









\









\









\









\









\







Component Component Location








\









\









\









\









\









\









\







ABS Control Unit Mounted on top of right rear
wheelwell, under metal plate.
A/C Control Unit On top of evaporator case.
Antenna Motor ECU Behind center console.
Auto-Cruise Control ECU Behind center of dash.

\









\









\









\









\









\









\







Component Component Location








\









\









\









\









\









\









\







ABS Speed Sensors (4) On bracket, on each wheel hub.\
Air Inlet Sensor In evaporator air duct.
Camshaft Position Sensor At bottom of left camshaft
gear.
Crankshaft Position Sensor Above crankshaft gear.
Engine Coolant Temperature Gauge Unit On thermostat housing.
Engine Coolant Temperature Sensor On thermostat housing.
Front Impact Sensor (Left) (SRS) On left front of engine
compartment.
Front Impact Sensor (Right) (SRS) On right front of engine
compartment.
Fuel Gauge Unit In fuel tank.
Fuel Tank Differential Pressure Sensor
(Calif.) Top of fuel tank.
G-Sensor (ABS) In center console, rear of
parking brake lever.
Geomagnetic Sensor (Compass) On top center of dash.

Center Differential Lock Operation
Detection Switch On transfer case.
Dual Pressure Switch On high pressure line, on
receiver-drier.
Engine Coolant Temperature Switch Top right front of engine.
Free Wheel Engage Switch Right side of engine
compartment.
High Range/Low Range Detection Switch On transfer case.
Low Range Operation Detection Switch On transfer case.
Oil Pressure Switch Lower left front of engine.
Parking Brake Switch At base of parking brake
lever.
Power Steering Pressure Switch On power steering pump.
Rear Differential Lock Detection
Switch Under rear of vehicle, on
differential.
Reed Switch Integral with speedometer.
Seat Belt Switch On driver-side seat belt
buckle.
Stoplight Switch On bracket, above brake pedal.
2WD/4WD Detection Switch On transfer case.
4WD Operation Detection Switch On transfer case.









\









\









\









\









\









\









\







MISCELLANEOUS









\









\









\









\









\









\









\







Component Component Location








\









\









\









\









\









\









\







Amplifier Under center console, below
floor.
Data Link Connector (DLC) Behind left side of dash,
near relay box.

CLEARING DTCS
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may
exist until computer systems have completed a relearn cycle.
To clear DTCs using a scan tool, refer to owners manual
supplied with scan tool. If scan tool is not available, DTCs may also
be cleared by disconnecting negative battery cable or PCM for at least
15 seconds, allowing PCM to clear DTCs. Reconnect negative battery
cable and check for DTCs to confirm repair.
PCM LOCATION
PCM LOCATION TABLE








\









\









\









\









\









\






Application Location
Montero ........................... Right Front Kick Panel
3000GT ............................. Behind Center Console









\









\









\









\









\









\






SUMMARY
If no hard DTCs (or only pass DTCs) are present, driveability\
symptoms exist, or intermittent DTCs exist, proceed to H - TESTS W/O
CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START,
etc.) or intermittent diagnostic procedures.
TERMINAL IDENTIFICATION
NOTE: The following terminals are shown as viewed from component
side of connector. Vehicles are equipped with different
combinations of components. Not all components are used on
all models. To determine component usage, see appropriate
wiring diagram in L - WIRING DIAGRAMS article.
TERMINAL IDENTIFICATION DIRECTORY TABLE









\









\









\









\









\









\






Connector See
ASD/Fuel Pump/MFI Relay ...................... Fig. 1 or 2
CKP/CMP Sensor ............................ Fig. 3, 4 or 5
DLC ............................................... Fig. 6
ECT Sensor ........................................ Fig. 7
EVAP Purge Solenoid ............................... Fig. 8
EVAP Vent Solenoid ................................ Fig. 9
Fuel Injector ....................... Fig. 10, 11, 12 or 13
Fuel Pump ................................... Fig. 14 or 15
Fuel Pump Control/Relay Module .................... Fig. 16
FTDP Sensor ...................................... Fig. 17
Generator Field .................................. Fig. 18
HO2S ............................................. Fig. 19
IAC Motor ........................................ Fig. 20
Ignition Coil .......................... Fig. 21, 22 or 23
Ignition Failure Sensor .......................... Fig. 24
Ignition Power Transistor .................. Fig. 25 or 26
KS ............................................... Fig. 27
MDP Sensor ....................................... Fig. 28
PCM .............................................. Fig. 29

* PLEASE READ THIS FIRST *
WARNING: To avoid injury from accidental air bag deployment, read and
carefully follow all SERVICE PRECAUTIONS and DISABLING &
ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT
SYSTEM article.
CAUTION: When removing or installing floor console, DO NOT allow any
impact or shock to Supplemental Restraint System Electronic
Control Unit (SRS-ECU).
FRONT HEATER UNIT & HEATER CORE
Removal
1) Deactivate air bag system. See AIR BAG RESTRAINT SYSTEM
article. Remove front and rear floor consoles. Remove hood release
handle. Remove fuel door release handle. Remove knee protector and
support brackets. Remove speaker covers.
NOTE: On A/T models, when removing front floor console, set A/T
selector lever in "L" position.
2) Remove glove box door stop, glove box and glove box frame.
Remove passenger-side air bag module. Remove heater control panel
cover. Remove heater control panel and radio. Remove plug from
instrument cluster cover. Remove instrument cluster cover and
instrument cluster.
3) Remove steering column cover. Remove clock or plug. Remove
side defroster covers. Remove side mirror control switch. Remove front
speakers.
4) Remove rheostat, rear wiper/washer switch, and door lock
switch. Disconnect ventilation control cable and harness connector.
See Fig. 9. Remove instrument panel. See INSTRUMENT PANEL. Drain
coolant and disconnect heater hoses from heater unit.
5) Remove shower ducts, lap duct, joint duct and center duct.
See Fig. 1 . Remove center reinforcement. Remove heater unit. Remove
distribution duct. Remove heater core.
Installation
Install heater core, distribution duct, heater unit and
center reinforcement. Install remaining ducts in reverse order of
removal. Install instrument panel. Tighten steering column bolts to 16
ft. lbs. (22 N.m). Install and adjust ventilation control cable. See
ADJUSTMENTS . To complete installation, reverse removal procedure. Add
coolant and check for leaks.
INSTRUMENT PANEL
Removal & Installation
Remove instrument panel components and then instrument panel,
in order listed on appropriate illustration. See Fig. 9. To install,
reverse removal procedures.

For testing procedures, see DTCs P1103 and P1104 in G - TESTS W/CODES
article.
COMPUTERIZED ENGINE CONTROLS
CONTROL UNIT
NOTE: For Powertrain Control Module (PCM) location, see
POWERTRAIN CONTROL MODULE (PCM) LOCATION table. To identify
PCM power and ground terminals, see appropriate pin voltage
chart in J - PIN VOLTAGE CHARTS article. To identify PCM
power and ground circuits, see appropriate wiring diagram in
L - WIRING DIAGRAMS article.
Ground Circuits
1) Turn ignition off. Using an ohmmeter, check continuity
between chassis ground and PCM ground terminal(s). See Figs. 1-5.
Ohmmeter should indicate zero ohms. If reading is not as specified,
check and repair open circuit between PCM connector and chassis
ground. If reading is as specified, go to next step.
2) Connect voltmeter negative lead to chassis ground. Connect
positive lead to PCM ground terminal(s). With engine running,
voltmeter should indicate less than one volt. If reading is more than
one volt, check for open, corrosion or loose connection in ground
circuit.
Power Circuits
Turn ignition on. Check for battery voltage on both PCM power
terminals. See Figs. 1-5. If battery voltage is not present, check
operation of MFI relay. See RELAYS under MOTORS, RELAYS & SOLENOIDS.
POWERTRAIN CONTROL MODULE (PCM) LOCATION TABLE









\









\









\









\









\









\






Application Location
Eclipse 2.0L Non-Turbo .................. In Front Of Left
Front Strut Tower
Mirage & Montero Sport .............. Behind Right Side Of
Instrument Panel (Glove Box)
Montero ........................... Right Front Kick Panel
All Other Models ................... Behind Center Console









\









\









\









\









\









\






Fig. 1: Identifying PCM Terminals (Diamante)
Courtesy of Mitsubishi Motor Sales of America
Fig. 2: Identifying PCM Terminals (Eclipse 2.0L Non-Turbo)
Courtesy of Mitsubishi Motor Sales of America