MITSUBISHI MONTERO 1991 Service Manual

Manufacturer: MITSUBISHI, Model Year: 1991, Model line: MONTERO, Model: MITSUBISHI MONTERO 1991
Pages: 1333, PDF Size: 24.61 MB
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Page 571 of 1333

Restricted .............. A .. Require repair or replacement.
Surface cracks (dry-
rotted) ................ 1 ............ Suggest replacement.
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VACUUM REGULATOR SOLENOIDS
VACUUM REGULATOR SOLENOID INSPECTION\
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Condition Code Procedure
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 ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Contaminated ............ A ........... ( 2) Require repair or
replacement.
Inoperative ............. B ........... ( 3) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Resistance out of
specification .......... B .. Require repair or replacement.
Restricted, affecting
performance ............ 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.
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.

Page 572 of 1333

(2) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.
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VACUUM TUBES
See VACUUM HOSES, TUBES AND CONNECTIONS (NON-METALLIC) .
VEHICLE SPEED SENSORS
VEHICLE SPEED SENSOR INSPECTION\
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Condition Code Procedure
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 ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Contaminated ............ A ........... ( 2) Require repair or
replacement.
Inoperative ............. B ........... ( 3) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require 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.

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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) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.
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VOLUME AIR FLOW SENSORS
VOLUME AIR FLOW SENSOR INSPECTION\
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Condition Code Procedure
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 ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Contaminated ............ A ........... ( 2) Require repair or
replacement.
Inoperative ............. B ........... ( 3) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Resistance out of
specification .......... B .. Require repair or replacement.
Restricted, affecting
performance ............ 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.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.

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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) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.
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WASTE GATE CONTROL SOLENOIDS
WASTE GATE CONTROL SOLENOID INSPECTION\
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Condition Code Procedure
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 ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Contaminated ............ A ........... ( 2) Require repair or
replacement.
Inoperative ............. B ........... ( 3) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Resistance out of
specification .......... B .. Require repair or replacement.
Restricted, affecting
performance ............ 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.

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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) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.
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WASTE GATES AND BOOST CONTROL MECHANISMS
WASTE GATE AND BOOST CONTROL MECHANISM INSPECTION\
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Condition Code Procedure
Boost pressure
incorrect .............. A ........... ( 1) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
( 1) - Incorrect boost pressure includes intermittent operation
or out of OEM specification.
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WATER PUMPS (ELECTRIC)
WATER PUMP (ELECTRIC) 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 (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Inoperative ............. A ........ ( 2) Require replacement.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 ............ Suggest replacement.
Rotation incorrect for
application ............ B .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.

Page 576 of 1333

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.
Vibration ............... 1 ............ Suggest 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) - Check fan motor/controls. Inoperative includes
intermittent operation or out of OEM specification.
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WATER PUMPS (NON-ELECTRIC)
WATER PUMP (NON-ELECTRIC) INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
corroded ............... 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.
Corrosion (internal) is
excessive, affecting
performance ............ A ............ Require replacement.
Corrosion (internal) is
excessive, not affecting
performance ............ 2 . Suggest cooling system service.
Inoperative ............. A ........ ( 1) Require replacement.
Leaking ................. A ............ Require replacement.
Noisy ................... A ............ Require replacement.
Rotation incorrect for
application ............ B .. Require repair or replacement.
Shaft bent .............. A ............ Require replacement.
( 1) - Inoperative includes intermittent operation or out of
OEM specification.
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WIRING HARNESSES AND CONNECTORS

Page 577 of 1333

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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Page 578 of 1333

\003
A - E N G IN E/V IN ID

1991 M it s u bis h i M onte ro
1991 ENGINE PERFORMANCE
Chrysler Motors/Mitsubishi Introduction
MODEL COVERAGE
MODEL COVERAGE TABLE (MITSUBISHI)\
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 Body  Engine Fuel  Ignition 

Model Code (
1) Engine ( 2) ID ( 3)System System ( 4) 

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\b\
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\b\
\b\b\
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  1.8L SOHC (
5)  T  PFI  Optical 

 
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\b\b\
\b\
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Eclipse  S,T  2.0L DOHC (
6)  R  PFI  DIS 

 
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\b\b\
\b\
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 2.0L DOHC Turbo (
6) U  PFI  DIS 

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\b\
\b\
\
\b\
\b\b\
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  2.0L SOHC (
6)  V  PFI  Optical 

 
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\b\b\
\b\
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Galant  R,X  2.0L DOHC (
6)  R  PFI  DIS 

 
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\b\b\
\b\
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 2.0L DOHC Turbo (
6) U  PFI  DIS 

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\b\
\b\
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\b\
\b\b\
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  1.5L SOHC (
7)  A  PFI  Optical 

Mirage  U 
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\b\b\
\b\
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  1.6L DOHC (
8)  Y  PFI  DIS 

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\b\
\b\
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\b\
\b\b\
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Montero  J  3.0L V6 SOHC (
9)  S  PFI  Optical 

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\b\
\b\
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\b\
\b\b\
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  2.4L SOHC (
10)  W  PFI  Optical 

Pickup  L,M 
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\b\
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  3.0L V6 SOHC (
9)  S  PFI  Optical 

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\b\
\b\
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\b\
\b\b\
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Precis  A,F,D  1.5L SOHC (
11)  J  PFI  Optical 

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\b\
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  3.0L V6 DOHC (
9)  B  PFI  DIS 

3000GT  D,E 
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\b\
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  3.0L V6 DOHC  C  PFI  DIS 

  Turbo (
9)    

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(
1) - Body Code is 5th digit of VIN. VIN is located on upper left 

corner of instrument panel. 

(
2) - See ENGINE CODE LOCATION. 

(
3) - Engine ID is 8th digit of VIN. 

(
4) - Ignition timing is computer controlled. On all models with 

Distributorless Ignition System (DIS), crank angle sensor is 

mounted where distributor is normally mounted. 

(
5) - 4G37 engine. 

(
6) - 4G63 engine. 

(
7) - 4G15 engine. 

(
8) - 4G61 engine. 

(
9) - 6G72 engine. 

(
10 ) - 4G64 engine. 

(
11 ) - G4AJK engine. 

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VIN DEFINITION
Numbers preceding the explanations in the legend below refer
to the sequence of characters as listed on VIN identification label.

Page 579 of 1333

(VIN) J B 3 C U 1 4 X 1 M U 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
1 - Indicates Nation of Origin.
2 - Indicates Manufacturer.
3 - Indicates Vehicle Type.
4 - Indicates Restraint System.
5 - Indicates Model.
6 - Indicates Vehicle Series.
7 - Indicates Body Type.
8 - Indicates Engine Type and Make.
9 - Indicates Check Digit.
10 - Indicates Model Year.
11 - Indicates Assembly Plant.
12-17 - Indicates Plant Sequential Number.
MODEL YEAR VIN CODE APPLICATION TABLE
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VIN Code Model Year
K .................................... 1989
L .................................... 1990
M .................................... 1991
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ENGINE CODE LOCATION
Fig. 1: Engine Code Location, Mirage 1.5L & 1.6L
Courtesy of Chrysler Motors.

Page 580 of 1333

Fig. 2: Engine Code Location, Eclipse & Galant, 1.8L & 2.0L
Courtesy of Chrysler Motors.
Fig. 3: Engine Code Location, Montero 3.0L
Courtesy of Chrysler Motors.

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