1998 MITSUBISHI MONTERO air condition

(chunking),
exposing cord .......... A ............ Require replacement.
Tread missing pieces
(chunking), not
exposing cord .......... 1 ............ Suggest replacement.
Tread separations A ............ Require replacement.
Tube in tubeless tire 3 .... (4) Suggest removal of tube.
Weather-checking ........ .. ......... No service required or
suggested.
Worn to tread wear
indicators ............. B ............ Require replacement.
( 1) - Determine and correct cause of irregular tire wear.
( 2) - If radials and bias or bias-belted ply tires are on the
same vehicle, the radials must be on the rear axle,
except for high-pressure temporary spares.
( 3) - Excessive is defined as enough to contribute to
performance problems. Match mounting may correct
run-out. If not, require replacement of appropriate
part. Refer to manufacturer's specifications.
( 4) - Most manufacturers do not recommend tubes in tubeless
tires. Inspect tire and wheel assembly to determine
the reason for a tube in tubeless tire. Recommendation
for repair or replacement should be based upon condition
of tires and/or wheel listed in these guidelines.









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VALVE STEMS
VALVE STEM INSPECTION








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Condition Code Procedure
Bent .................... 1 ........... Suggest replacement.
Broken .................. A ........... Require replacement.
Cut, but not leaking .... 1 ........... Suggest replacement.
Deteriorated
(cracking, dry rot) .... 1 ........... Suggest replacement.
Leaking ................. A . Require repair or replacement.
Missing ................. C ........... Require replacement.
Threads damaged ......... A . Require repair or replacement.
Threads stripped ........ A ........... Require replacement.
Valve cap missing ....... C .... Require replacement of cap.
Weather-checking ........ 1 ........... Suggest replacement.
Won't take air .......... A . Require repair or replacement.









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WHEEL ATTACHMENT HARDWARE
For conditions noted below, also check conditions of wheel
stud holes.
CAUTION: Proper lug nut torque is essential. Follow recommended
torque specifications and tightening sequence. DO NOT
lubricate threads unless specified by the vehicle
manufacturer.
WHEEL ATTACHMENT HARDWARE INSPECTION









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Condition Code Procedure
Bent .................... A ............ Require replacement.
Broken .................. A ........ ( 1) Require replacement.

Loose ................... B ... Require repair or replacement
of affected component.
Lug nut installed
backward ............... B .. Require repair or replacement.
Lug nut mating type
incorrect .............. B ..... Require replacement of nut.
Lug nut mating surface
dished ................. A ..... Require replacement of nut.
Lug nut rounded ......... A . (2) Require replacement of nut.
Lug nut seized .......... A . ( 2) Require replacement of nut.
Stud incorrect .......... B .... Require replacement of stud.
Threads damaged ......... A ... Require repair or replacement
of component with damaged
threads.
Threads stripped ........ A .......... Require replacement of
component with stripped
threads.
( 1) - Some manufacturers require replacement of all studs on
that wheel if two or more studs or nuts on the same
wheel are broken or missing.
( 2) - Only required if removing wheel.









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WHEELS (RIMS)
WARNING: Mounting a regular tire on a high-pressure compact spare
wheel is not permitted. Attempting to mount a tire of one
diameter on a wheel of a different diameter or flange
type may result in serious injury or death. If the wheel
identification stamp is not legible, or cannot be found,
do not use the wheel until the size and type have been
properly identified. Wheels of different diameter,
offset, or width cannot be mixed on the same axle. Bead
seat tapers cannot be interchanged.
WHEEL (RIM) INSPECTION









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Condition Code Procedure
Bead leaking, caused
by wheel ............... A ........... ( 1) Require repair or
replacement.
Bent hub mounting
surface ................ A ............ Require replacement.
Bent rim, causing
vibration .............. 2 ........ ( 1) Suggest replacement.
Broken .................. A ............ Require replacement.
Cast wheel porous,
causing a leak ......... A .. Require repair or replacement.
Clip-on balance weight is
incorrect type
for rim flange ......... 2 ............ Suggest replacement.
Corrosion, affecting
structural integrity ... A ............ Require replacement.
Corrosion build-up on
wheel mounting
surface ................ A ................. Require repair.
Cracked ................. A ............ Require replacement.
Directional/asymmetrical
wheels mounted
incorrectly ............ B ....... Require remounting and/or
repositioning.

Fig. 7: Brakes, Steering, & Suspension
Fig. 8: Air Conditioning, Heater & Ventilation

SYSTEM WIRING DIAGRAMS
1998 Mitsubishi Montero
1998 System Wiring Diagrams
Mitsubishi - Montero
AIR CONDITIONING
A/C Circuit

Defective diodes or stator See Bench Test in
ALTERNATOR article









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Battery Does Loose or worn drive belt Check alternator drive
Stay Charged belt tension and
condition. See
Belt Adjustment in
appropriate TUNE-UP
article in the
TUNE-UP section
Loose or corroded battery Check all charging
connections system connections
Loose alternator connections Check all charging
system connections
Defective alternator or See On-Vehicle Tests
battery and Bench Tests in
ALTERNATOR article
Add-on electrical accessories Install larger
exceeding alternator capacity alternator









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Battery Defective battery Check alternator
Overcharged- output and repair as
Uses Too Much necessary
Water
Defective alternator See On-Vehicle Test and
Bench Tests in
ALTERNATOR article
Excessive alternator voltage Check alternator output
and repair as necessary









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IGNITION SYSTEM TROUBLE SHOOTING
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.
Ignition Secondary Trouble Shooting Chart








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START: Visually inspect Spark Plug Wires, Coil Wires, 

Plug Wire Boots, Rotor, and Distributor Cap for 

signs of damage. 










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OK   NOT OK 




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* To test secondary ignition   * Repair or replace 

system, modify a Spark Plug   damaged components 

by attaching a ground wire   as necessary 

to the body of the plug and  









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 OK   NOT OK  




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* Check Pick-Up coil for   * Adjust or replace as  

correct resistance value.   necessary.  










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NOT OK   OK  








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* Replace Pick-Up coil if   * Check control module for  

not to specification.   good ground connections.  










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OK  




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* If vehicle fails to run at this point, go to  
 the appropriate article in the ENGINE  
 PERFORMANCE section.  









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OK   NOT OK 




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* Check wires from the battery/  * Replace ballast resistor 

ignition switch to the coil.   if the measured resistance 

Also check the coil primary   value is not within 

and secondary resistance.   specification. 










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STARTER TROUBLE SHOOTING
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 STARTER TROUBLE SHOOTING CHART









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CONDITION POSSIBLE CAUSE CORRECTION








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Starter Fails Dead battery or bad Check battery charge
to Operate connections between and all wires and
starter and battery connections to starter
Ignition switch faulty Adjust or replace
or misadjusted ignition switch
Open circuit between Check and repair wires
starter switch ignition and connections as
terminal on starter relay necessary
Starter relay or starter See Testing in STARTER
defective article

Fires With Key Flywheel runout contributes
released. Engine to the intermittent nature
Fires and Cranks
Normally









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AIR CONDITIONING & HEAT
AIR CONDITIONING TROUBLE SHOOTING
WARNING: 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 AIR CONDITIONING TROUBLE SHOOTING CHART









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CONDITION POSSIBLE CAUSE








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Compressor Not Working
Compressor clutch circuit open.

Compressor clutch coil inoperative.

Poor clutch ground connection.

Fan belts loose.

Thermostatic switch inoperative.

Thermostatic switch not adjusted.

Ambient temperature switch open.

Superheat fuse blown.








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Excessive Noise or Vibration
Missing or loose mounting bolts.

Bad idler pulley bearings.

Fan belts not tightened correctly.

Compressor clutch contacting body.

Excessive system pressure.

Compressor oil level low.

Damaged clutch bearings.

Damaged reed valves.

Damaged compressor.








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Insufficient or No Cooling;
Compressor Working
Expansion valve inoperative.

Heater control valve stuck open.

Low system pressure.

Blocked condenser fins.

Blocked evaporator fins.

Vacuum system leak.

Vacuum motors inoperative.

Control cables improperly adjusted.

Restricted air inlet.

Mode doors binding.

Blower motor inoperative.

Temperature above system capacity.








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HEATER SYSTEM TROUBLE SHOOTING
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 DIAGNOSTIC, or TESTING articles available in the
section(s) you are accessing.
BASIC HEATER SYSTEM TROUBLE SHOOTING CHART









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CONDITION POSSIBLE CAUSE








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Insufficient, Erratic,
or No Heat
Low Coolant Level

Incorrect thermostat.

Restricted coolant flow through
heater core.


Heater hoses plugged.

Misadjusted control cable.

Sticking heater control valve.

Vacuum hose leaking.

Vacuum hose blocked.

Vacuum motors inoperative.

Blocked air inlet.

Inoperative heater blower motor.

Oil residue on heater core fins.

Dirt on heater core fins.








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Too Much Heat
Improperly adjusted cables.

Sticking heater control valve.

No vacuum to heater control valve.

Temperature door stuck open.








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Air Flow Changes During
Acceleration
Vacuum system leak.

Bad check valve or reservoir.








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Air From Defroster At All
Times
Vacuum system leak.

Improperly adjusted control cables.

Inoperative vacuum motor.








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Blower Does Not Operate
Correctly
Blown fuse.

Blower motor windings open.

Resistors burned out.

Motor ground connection loose.

Wiring harness connections loose.

Blower motor switch inoperative.

Blower relay inoperative.

Fan binding or foreign object
in housing.


Fan blades broken or bent.








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BRAKES
BRAKE SYSTEM TROUBLE SHOOTING
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.