wiring 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 1397 of 1501
Does Not Close battery as necessary
Faulty wiring Check all wiring and
connections leading to
relay
Neutral safety switch Replace neutral safety
faulty switch
Starter relay faulty Replace starter relay
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Starter Drive Starter motor loose on Tighten starter
Will Not mountings attach bolts
Disengage
Worn drive end bushing See STARTER article
Damaged engine flywheel Replace flywheel and
teeth starter pinion gear for
damage
Drive yolk return spring Replace return spring
broken or missing
Faulty ignition switch Replace ignition switch
Insufficient clearance Replace starter
between winding leads to solenoid
solenoid terminal and main
contact in solenoid
Starter clutch not Replace starter clutch
disengaging
Ignition starter switch Replace ignition switch
contacts sticking
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Starter Relay Faulty solenoid switch, Check all wiring
Operates but switch connections or between relay and
Solenoid Does Not solenoid or replace
relay or solenoid as
necessary
Broken lead or loose Repair wire or wire
soldered connections connections as
necessary
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Solenoid Plunger Weak battery Charge or replace
Vibrates When battery as necessary
Switch is Engaged
Solenoid contacts Clean contacts or
corroded replace solenoid
Faulty wiring Check all wiring
leading to solenoid
Broken connections inside Repair connections or
switch cover replace solenoid
Open hold-in wire Replace solenoid
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Low Current Draw Worn brushes or weak Replace brushes or
brush springs as
necessary
Page 1398 of 1501
![MITSUBISHI MONTERO 1998 Service Manual \
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High Pitched Whine Distance too great](/img/19/57333/w960_57333-1397.png "MITSUBISHI MONTERO 1998 Service Manual \
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High Pitched Whine Distance too great")
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High Pitched Whine Distance too great Align starter or check
During Cranking between starter that correct starter
Before Engine pinion and flywheel and flywheel are being
Fires but Engine used
Fires and Cranks
Normally
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High Pitched Distance too small between
Whine After Engine starter pinion and flywheel
Fires With Key Flywheel runout contributes
released. Engine to the intermittent nature
Fires and Cranks
Normally
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TUNE-UP TROUBLE SHOOTING - GAS ENGINE VEHICLES
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC SPARK PLUG TROUBLE SHOOTING CHARTS
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CONDITION POSSIBLE CAUSE CORRECTION \
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Normal Spark Light Tan or Gray deposits No Action
Plug Condition
Electrode not burned or No Action
fouled
Gap tolerance not changed No Action
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Cold Fouling or Overrich air/fuel mixture Adjust air/fuel
Carbon Deposits mixture, see ENGINE
PERFORMANCE section
Faulty choke Replace choke
assembly, see ENGINE
PERFORMANCE section
Clogged air filter Clean and/or replace
air filter
Incorrect idle speed or Reset idle speed and/
dirty carburetor or clean carburetor
Faulty ignition wires Replace ignition
wiring
Prolonged operation Shut engine off
at idle during long idle
Sticking valves or worn Check valve train
valve guide seals
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Wet Fouling Worn rings and pistons Install new rings and
or Oil Deposits pistons
Page 1399 of 1501
Excessive cylinder wear Rebore or replace
block
Excessive valve guide Worn or loose bearing
clearance
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Gap Bridged Deposits in combustion Clean combustion
chamber becoming fused chamber of deposits
to electrode
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Blistered Engine overheating Check cooling system
Electrode
Wrong type of fuel Replace with correct
fuel
Loose spark plugs Retighten spark plugs
Over-advanced ignition Reset ignition timing
timing see ENGINE PERFORMANCE
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Pre-Ignition or Incorrect type of fuel Replace with correct
Melted Electrodes fuel
Incorrect ignition timing Reset ignition timing
see ENGINE PERFORMANCE
Burned valves Replace valves
Engine Overheating Check cooling system
Wrong type of spark plug, Replace with correct
too hot spark plug, see
ENGINE PERFORMANCE
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Chipped Severe detonation Check for over-
Insulators advanced timing or
combustion
Improper gapping Re-gap spark plugs
procedure
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Rust Colored Additives in unleaded Try different fuel
Deposits fuel brand
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Water In Combus- Blown head gasket or Repair or replace
tion Chamber cracked head head or head gasket
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NOTE: Before diagnosing an electronic ignition system, ensure that
all wiring is connected properly between distributor, wiring
connector and spark plugs. Ignition problem will show up
either as: Engine Will Not Start or Engine Runs Rough.
BASIC ELECTRONIC IGNITION TROUBLE SHOOTING CHARTS
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CONDITION POSSIBLE CAUSE CORRECTION \
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Engine Won't Open circuit between Repair circuit
Start distributor and bulkhead
connector
Open circuit between Repair circuit
bulkhead connector and
Page 1400 of 1501
![MITSUBISHI MONTERO 1998 Service Manual ignition switch
Open circuit between Repair circuit
ignition switch and
starter solenoid
\](/img/19/57333/w960_57333-1399.png "MITSUBISHI MONTERO 1998 Service Manual ignition switch
Open circuit between Repair circuit
ignition switch and
starter solenoid
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ignition switch
Open circuit between Repair circuit
ignition switch and
starter solenoid
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Engine Runs Fuel lines leaking or Tighten fitting,
Rough clogged remove restriction
Initial timing incorrect Reset ignition timing
see ENGINE PERFORMANCE
Centrifugal advance Repair distributor
malfunction advance
Defective spark plugs or Replace plugs or plug
wiring wiring
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Component Failure Spark arc-over on cap, Replace cap, rotor or
rotor or coil or coil
Defective pick-up coil Replace pick-up coil
Defective ignition coil Replace ignition coil
Defective vacuum unit Replace vacuum unit
Defective control module Replace control module
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BASIC ELECTRONIC IGNITION TROUBLE SHOOTING
CHARTS - USING OSCILLOSCOPE PATTERNS
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CONDITION POSSIBLE CAUSE CORRECTION \
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Firing Voltage Retarded ignition timing Reset ignition
Lines are the Same, timing, see ENGINE
but Abnormally High PERFORMANCE section
Fuel mixture too lean Readjust carburetor,
see ENGINE PERFORMANCE
High resistance in coil Replace coil wire
wire
Corrosion in coil tower Clean and/or replace
terminal coil
Corrosion in distributor Clean and/or replace
coil terminal distributor cap
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Firing Voltage Fuel mixture too rich Readjust carburetor,
Lines are the Same see ENGINE PERFORMANCE
but Abnormally Low
Breaks in coil wire causing Replace coil wire
arcing
Cracked coil tower causing Replace coil
arcing
Low coil output Replace coil
Low engine compression Determine cause and
Page 1405 of 1501
Vacuum leak Repair vacuum leak
Improper float bowl fuel Reset float
level adjustment, see FUEL
Clogged air bleed or idle Clean carburetor
passages passages, see FUEL
Clogged or worn air cleaner Replace air filter
filter
Faulty choke vacuum Replace diaphragm,
diaphragm see ENGINE PERFORMANCE
Exhaust manifold heat valve Replace heat valve
inoperative
Improper distributor spark Check distributor
advance operation
Leaking valves or valve Check and repair
components valvetrain
Improper carburetor Remove and remount
mounting carburetor
Excessive play in Replace distributor
distributor shaft
Loose or corroded wiring Repair or replace as
connections required
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Engine Surges Improper PCV valve airflow Replace PCV valve
Vacuum leaks Repair vacuum leaks
Clogged air bleeds Remove restriction
EGR valve malfunction Replace EGR valve
Restricted air cleaner Replace air filter
filter
Cracked or broken vacuum Replace vacuum hoses
hoses
Cracked or broken ignition Replace ignition
wires wires
Vacuum advance malfunction Check unit and
replace as necessary
Defective or fouled spark Replace spark plugs
plugs
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Ping or Spark Incorrect ignition timing Reset ignition timing
Knock see ENGINE PERFORMANCE
Distributor centrifugal or Check operation and
vacuum advance malfunction replace as necessary
Carburetor setting too lean Readjust mixture
Page 1478 of 1501
REAR WIPER ARM ADJUSTMENT
NOTE: Diamante, Galant and Mirage are not equipped with rear
wipers.
Ensure wiper motor is in park position. Position wiper arm
and blade assembly so tip of blade is specified distance from edge of
window. See REAR WIPER ADJUSTMENT SPECIFICATIONS table.
REAR WIPER ADJUSTMENT SPECIFICATIONS TABLE
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Model In. (mm)
Eclipse .............................. 4.98-5.38 (125-135)
Montero & Montero Sport ................ 2.56-2.95 (65-75)
3000GT ............................................... ( 1)
( 1) - Position blade tip along ceramic edge of window.
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COMPONENT TESTS
* PLEASE READ THIS FIRST *
NOTE: For headlight washer switch testing on Montero,
see STEERING COLUMN SWITCHES article.
WASHER MOTOR TEST (FRONT & REAR)
1) Ensure washer reservoir fluid is at proper level. Turn
ignition switch to ON position. Press washer button on wiper/washer
switch. If fluid does not spray on windshield, turn ignition off.
Check for plugged washer hoses from washer reservoir to windshield
nozzle. Repair as necessary.
2) If washer hoses are not plugged, disconnect washer motor
electrical connector. Check for poor connection or connector damage.
Repair as necessary. If connector is okay, connect battery power to
washer motor terminals. Washer motor should operate. Replace motor as
necessary.
FRONT WIPER MOTOR TEST
Checking Wiper Motor Operation
Disconnect wiring connector from wiper motor. Connect battery
voltage to wiper motor connector as shown, and ensure wiper motor
operates at low and high speeds. See Fig. 1 or 2. Replace motor as
necessary.
Checking Automatic Stop
1) Operate wiper motor at low speed. See Fig. 1 or 2.
Disconnect battery voltage during operation to stop motor.
2) Using a jumper wire, connect terminals as shown. See
Fig. 1 or 2. Connect 12 volts to indicated terminal, and ground wiper
motor bracket. Ensure wiper arm is correctly parked. Replace motor as
necessary.
Page 1482 of 1501
NOTE: Front wiper switch is part of combination switch on steering
column. For diagnosis, see STEERING COLUMN SWITCHES article.
REAR WIPER MOTOR TEST
Operational Check
Disconnect wiring connector from wiper motor. Connect battery
voltage to wiper motor connector as shown, and ensure motor housing is
grounded. Motor should run at low and high speed. See Fig. 4, 5, 6 or
7. Replace motor as necessary.
Fig. 4: Checking Rear Wiper Motor Operation & Automatic Stop
(Eclipse)
Courtesy of Mitsubishi Motor Sales of America
Page 1484 of 1501
Fig. 7: Checking Rear Wiper Motor Operation (3000GT)
Courtesy of Mitsubishi Motor Sales of America
Automatic Stop Check
Operate wiper motor, and then disconnect wiring connector
from wiper motor to stop motor operation at a point other than park
position. Connect battery voltage and jumper wire to wiper motor
connector as shown, and ensure motor housing is grounded. See Fig. 4,
8, 9 or 10. Motor should return to park position. Replace motor as
necessary.
Fig. 8: Checking Rear Wiper Motor Automatic Stop (Montero)
Courtesy of Mitsubishi Motor Sales of America
Page 1486 of 1501
voltmeter lead to terminal No. 2. Connect negative voltmeter lead to
terminal No. 7. Ensure battery voltage is present, when battery
voltage is connected to terminals No. 4 and 8, and terminal No. 7 is
grounded. See Fig. 12.
2) With voltmeter connected to terminals No. 2 and 7, ensure
battery voltage is present for intermittent periods of 8 seconds when
positive battery terminal is connected to terminals No. 4 and 5, and
negative battery terminal is connected to terminal No. 7.
3) With voltmeter connected to terminals No. 2 and 7, ensure
battery voltage is present when positive battery terminal is connected
to terminals No. 4 and 6, and negative battery terminal is connected
to terminal No. 7. Replace relay if voltage is not as specified.
Operational Check (Montero Sport)
1) Relay is located in relay box under left side of dash.
Remove relay from lower left corner of relay box. Check for continuity
between terminals No. 1 and 2. See Fig. 12. Continuity should exist.
2) Connect terminals No. 4 and 5 to positive battery
terminal. Ensure battery voltage is present at terminal No. 2 for
intermittent periods of 8 seconds when terminal No. 7 is connected to
negative battery terminal. Replace relay if voltage is not as
specified.
Operational Check (3000GT)
Remove quarter trim. Leave intermittent relay connected to
wiring harness. Operate rear wiper and check voltage at terminal No.
2. See Fig. 11. Zero volts should be present when rear wiper stops.
There should be 12 volts when rear wiper operates.
Fig. 11: Identifying Rear Wiper Relay Terminals (3000GT)
Courtesy of Mitsubishi Motor Sales of America
REAR WIPER SWITCH TEST
Page 1487 of 1501
Eclipse
1) Remove wiper switch from instrument panel and disconnect
wiper switch wiring connector. Place wiper switch in OFF position.
Continuity should exist between terminals No. 5 and 6. See Fig. 12.
Place wiper switch in LO position. Continuity should exist between
terminals No. 6 and 7.
2) Place wiper switch in INT position. Continuity should
exist between terminals No. 3 and 7, and between terminals No. 5 and
6. Depress washer switch. Continuity should exist between terminals
No. 7 and 8. Continuity between terminals No. 1 and 4 should exist in
all positions (light circuit). Replace wiper switch if continuity is
not as specified.
Fig. 12: Identifying Rear Wiper Switch & Relay Terminals
Courtesy of Mitsubishi Motor Sales of America
Montero & Montero Sport
Remove lower column cover. Remove upper column cover. Loosen
screws indicated by arrow in illustration. See Fig. 13. Remove rear
wiper/washer switch. Operate switch and check continuity according to
illustration. See Fig. 13.