1991 MITSUBISHI MONTERO Service Manual

Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Wire lead conductors
exposed ................ B .. Require repair or replacement.
Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
(1) - Inoperative includes intermittent operation or out of OEM
specification.
( 2) - Determine cause and correct prior to repair or
replacement of part.









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WASHER PUMPS
WASHER PUMP INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Inoperative ............. A ........... ( 2) Require repair or
replacement.
Leaking externally ...... A .. Require repair or replacement.
Leaking internally ...... A .. Require repair or replacement.
Noisy ................... 2 .. Suggest repair or replacement.
Resistance out of
specification .......... B .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
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.
Wire lead conductors
exposed ................ B .. Require repair or replacement.

Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
(1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Inoperative includes intermittent operation.









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WIPER ARMS AND BLADES
NOTE: Windshield coatings or waxes can cause blades to not
function as intended. Clean surface before making final
judgment about blade replacement.
WIPER ARM AND BLADE INSPECTION









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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Attaching socket
stripped ............... A ............ Require replacement.
Bent .................... A .. Require repair or replacement.
Loose ................... 2 .. Suggest repair or replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 .. Suggest repair or replacement.
Size incorrect .......... 2 ............ Suggest replacement.
Tension insufficient .... B .. Require repair or replacement.
Torn .................... A ............ Require replacement.
Worn, affecting
performance ............ A ............ Require replacement.
Worn, not affecting
performance ............ 1 ............ Suggest replacement.









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WIPER BLADES
See WIPER ARMS AND BLADES .
WIPER HOSES AND NOZZLES
WIPER HOSE AND NOZZLE INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Blocked ................. A .. Require repair or replacement.

Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Oil-soaked (spongy) ..... 1 ............ Suggest replacement.
Spray pattern incorrect . 2 .. Suggest repair or replacement.
Surface cracks (dry-
rotted) ................ 1 ............ Suggest replacement.









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WIPER LINKAGES
WIPER LINKAGE INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Attaching stud stripped . A ............ Require replacement.
Bent .................... A .. Require repair or replacement.
Inoperative ............. A ........ ( 1) Require replacement.
Loose ................... 2 .. Suggest repair or replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 .. Suggest repair or replacement.
Tension insufficient .... B .. Require repair or replacement.
Worn, affecting
performance ............ A ............ Require replacement.
Worn, not affecting
performance ............ 1 ............ Suggest replacement.
( 1) - Inoperative includes intermittent operation.









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WIPER NOZZLES
See WIPER HOSES AND NOZZLES .
WIPER PUMP RESERVOIRS
WIPER PUMP RESERVOIR INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Cap missing ............. C ............ Require replacement.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.









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WIRING HARNESSES AND CONNECTORS
WIRING HARNESS AND CONNECTOR INSPECTION








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Condition Code Procedure
Application incorrect ... B .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ 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 ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Insulation damaged,
conductors exposed ..... A .. Require repair or replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Open .................... A .. Require repair or replacement.
Protective shield
(conduit) melted ....... 2 ........... ( 1) Suggest repair or
replacement.
Protective shield
(conduit) missing ...... 2 .. Suggest repair or replacement.
Resistance (voltage drop)
out of specification ... A .. Require repair or replacement.
Routed incorrectly ...... B ................. Require repair.
Secured incorrectly ..... B ................. Require repair.
Shorted ................. A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Voltage drop out of
specification .......... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.









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\003ELE C TR O STA TIC D IS C HAR G E W AR NIN G - B ASIC IN FO RM ATIO N

1991 M it s u bis h i M onte ro
GENERAL INFORMATION
Electrostatic Discharge (ESD) Warning - Basic Information
All Makes amd Models
* PLEASE READ THIS FIRST *
NOTE: This article is intended for general information purposes
only.
INTRODUCTION
All Electrostatic Discharge (ESD) sensitive components
contain solid state circuits (transistors, diodes, semiconductors)
that may become damaged when contacted with an electrostatic charge.
The following information applies to all ESD sensitive devices. The
ESD symbol shown in Fig. 1 may be used on schematics to indicate which
components are ESD sensitive. See Fig. 1. Although different
manufactures may display different symbols to represent ESD sensitive
devices, the handling and measuring precautions and procedures are the
same.
Fig. 1: Sample ESD Symbol
HANDLING STATIC-SENSITIVE CIRCUITS/DEVICES

When handling an electronic part that is ESD sensitive, the
technician should follow these guidelines to reduce any possible
electrostatic charge build-up on the technician's body and the
electronic part.
1) Always touch a known good ground source before handling
the part. This should be repeated while handling the part and more
frequently after sitting down from a standing position, sliding across
the seat or walking a distance.
2) Avoid touching electrical terminals of the part, unless
instructed by a diagnostic procedure.
3) DO NOT open the package of a new part until it is time to
install the part.
4) Before removing the part from its package, ground the
package to a known good ground source.
CHECKING STATIC-SENSITIVE CIRCUITS/DEVICES
1) Solid State circuits in electronic devices are shown
greatly simplified in schematics. See Fig. 2. Due to the
simplification of the electronic devices on the schematic, resistance
measurements could be misleading or could lead to an electrostatic
discharge. Always follow the recommended diagnostic procedure.
Fig. 2: Sample Schematic Showing Typical ESD Sensitive Device
2) Only measure resistance at the terminals of the devices
when instructed by the recommended diagnostic procedure.
3) When using a voltmeter, be sure to connect the ground lead
first.

\003
B - E M IS SIO N A PPLIC ATIO N

1991 M it s u bis h i M onte ro
1990-91 ENGINE PERFORMANCE
Mitsubishi Emission Control Applications
Galant, Mirage, Montero, Pickup, Precis, Sigma,
Van/Wagon
EMISSION CONTROL DEVICE APPLICATIONS
EMISSION CONTROL DEVICE APPLICATIONS TABLE








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1.5L PFI Mirage
PCV, EVAP, TWC, EGR (1), SPK, O2, CEC, CE, EVAP-CS, EVAP-VC,
EGR-CS (1), EGR-TS (1), SPK-CC
1.5L PFI Precis
PCV, EVAP, TWC, EGR, SPK, O2, CEC, CE, EVAP-CS, EVAP-VC,
EGR-CS (1), EGR-TVS (2), SPK-CC
1.6L PFI
PCV, EVAP, TWC, EGR, SPK, O2, CEC, CE, EVAP-CS, EVAP-VC,
EGR-CS (1), EGR-TS (1), EGR-TVS (2), SPK-CC
1.8L, 2.0L & 2.0L Turbo PFI
PCV, EVAP, TWC, EGR, SPK, CEC, CE, EVAP-CS, EVAP-PV (3),
EVAP-VC, EGR-CS (1), EGR-TS (1), EGS-TVS, SPK-CC
2.4L PFI
PCV, EVAP, TWC, EGR, SPK, O2, CEC, CE, EVAP-CS, EVAP-VC,
EGR-CS (1)(4), EGR-TS (1), EGR-TVS (5), SPK-CC
2.6L 2-Bbl.
PCV, TAC, EVAP, TWC, EGR, SPK, PAS, O2, CEC, EVAP-CBVV,
EVAP-PV, EVAP-TV, EVAP-VC, EGR-VRV, SPK-TVS, PAS-PAV,
PAS-PAVCS, DVA
3.0L V6 PFI Montero
PCV, EVAP, TWC, SPK, O2, CEC, CE, EVAP-CS, EVAP-VC, SPK-CC
3.0L V6 PFI Pickup & Sigma
PCV, EVAP, TWC, EGR (1), SPK, O2, CEC, CE, EVAP-VC, EVAP-CS,
EGR-CS (1), EGR-TS (1), EGR-TVS (6), SPK-CC
3.0L SOHC, 3.0L DOHC & 3.0L Turbo (PFI) Stealth
PCV, EVAP, TWC, EGR, SPK, O2, CEC, CE, EGR-CSOLV (1),
EGR-TS (1), EGR-TV (2), PG-CSOLV, PG-CV (7), SPK-CC
(1) - California models only.
(2) - Federal models only.
(3) - Eclipse 2.0L Turbo models only.
(4) - Except Van/Wagon models.
(5) - Van/Wagon only.
(6) - Sigma Federal only.
(7) - Turbo models only.









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ABBREVIATION DEFINITIONS
ABBREVIATIONS DEFINITIONS TABLE








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Abbreviation Description
AIS ............................ Air Injection System
CBVV ..................... Carburetor Bowl Vent Valve
CE ............................... Check Engine Light
CEC ..................... Computerized Engine Control
EGR ....................... Exhaust Gas Recirculation
EGR-CS ......................... EGR Control Solenoid
EGR-TS ....................... EGR Temperature Sensor
EGR-TV .............................. EGR Thermovalve
EGR-TVS ................... EGR Thermal Vacuum Switch
EGR-VRV .................. EGR Vacuum Regulator Valve
EVAP ........................ Fuel Evaporation System
EVAP-CBVV ........... EVAP Carburetor Bowl Vent Valve
EVAP-CS ....................... EVAP Control Solenoid
EVAP-PV ............................ EVAP Purge Valve
EVAP-TV .......................... EVAP Thermal Valve
EVAP-VC ......................... EVAP Vapor Canister
FBC ............................. Feedback Carburetor
HAC ...................... High Altitude Compensation
HAC-VSV .................. HAC Vacuum Switching Valve
MCV ........................... Mixture Control Valve
O2 .................................... Oxygen Sensor
PAS ............................. Pulse Air Injection
PAS-PAV ......................... PAS Pulse Air Valve
PAS-PAVCS ............ PAS Air Valve Control Solenoid
PAV ................................. Pulse Air Valve
PAV-CSOLV ................ PAV Control Solenoid Valve
PCV .................. Positive Crankcase Ventilation
PFI ............................. Port Fuel Injection
PG-CSOLV ............... Purge Control Solenoid Valve
PG-CV .......................... Purge Control Valve
PG-TV ............................. Purge Thermovalve
SPK ................................... Spark Control
SPK-CC ...................... SPK Computer Controlled
SPK-TVS ................... SPK Thermal Vacuum Switch
TAC ........................ Thermostatic Air Cleaner
TWC .............................. Three-Way Catalyst









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