sensor MITSUBISHI MONTERO 1998 Service Manual

Fig. 15: Identifying Instrument Panel Fuel Gauge Resistance Check
Terminals (Montero Sport)
Courtesy of Mitsubishi Motor Sales of America
Fig. 16: Identifying Instrument Panel Fuel Gauge Resistance Check
Terminals (3000GT)
Courtesy of Mitsubishi Motor Sales of America
INPUT/OUTPUT SENSOR

Eclipse 2.0L Non-Turbo With A/T
Disconnect sensor harness connector. Check resistance between
sensor terminals. Resistance should be 300-1200 ohms. Replace sensor
as necessary.
OIL PRESSURE GAUGE
Circuit Test (Eclipse, Montero & 3000GT)
1) Disconnect oil pressure gauge wiring connector from
sending unit inside engine compartment. Connect a 12-volt test light
between harness connector terminal and ground. Turn ignition on, but
DO NOT start engine.
2) If test light comes on and gauge needle moves, go to GAUGE
RESISTANCE TEST. If test light does not come on and gauge needle does
not move, repair wiring to sending unit.
Gauge Resistance Test (Eclipse, Montero & 3000GT)
1) Remove instrument cluster from instrument panel. See
INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. On 3000GT, remove air
distribution duct and combination gauges.
2) On all models, check continuity between oil pressure gauge
terminals. See Fig. 17, 18 or 19. See
OIL PRESSURE GAUGE RESISTANCE SPECIFICATIONS table. If resistance is
not within specification, replace oil pressure gauge.
OIL PRESSURE GAUGE RESISTANCE SPECIFICATIONS TABLE









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Application Ohms
Eclipse & 3000GT ................................... 40-44
Montero ............................................... 50









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Fig. 17: Oil Pressure Gauge Resistance Test Terminals (Eclipse)
Courtesy of Mitsubishi Motor Sales of America

Calibration Test
Adjust tire pressure to standard value. Using a calibrated,
reliable speedometer tester, compare reading of vehicle speedometer to
speedometer tester. See SPEEDOMETER ALLOWABLE VARIATION table. Replace
speedometer if necessary.
SPEEDOMETER ALLOWABLE VARIATION TABLE









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MPH (KM/H) Allowable Variation MPH (KM/H)
20 (32) .................................... 19-22 (31-35)
40 (64) .................................... 38-44 (61-71)
60 (97) ................................... 57-66 (92-106)
80 (129) ................................. 76-88 (122-142)
100 (161) ............................... 94-110 (151-177)









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NOTE: Speedometer circuit test for Montero and 3000GT is not
available from manufacturer at time of publication.
Circuit Test (Eclipse, Galant & Mirage)
1) Remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. Disconnect instrument cluster harness
connector. Turn ignition on. Connect voltmeter between ground and
instrument cluster harness-side connector terminal No. 36
(Yellow/White wire) on Eclipse, terminal No. 49 (Yellow/White wire) \
on
Galant, or terminal No. 51 (Yellow wire) on Mirage. Move vehicle
forward and backward. If voltmeter reads 4.5 volts or greater, go to
step 4). If voltage reading is not as specified, replace speedometer
assembly.
2) Connect voltmeter between ground and instrument cluster
harness-side connector terminal No. 10 (Black/White wire) on Eclipse,
terminal No. 24 (Black/White wire) on Galant, or terminal No. 42
(Black/White wire) on Mirage. Turn ignition on. Move vehicle forward
and backward. If battery voltage is present, replace speedometer
assembly. If battery voltage is not present, go to step 4).
3) On Mirage, check continuity between ground and instrument
cluster harness-side connector terminal No. 11 (Black wire). If
continuity is present, go to next step. If continuity is not present,
check circuit between ground and instrument cluster. See
WIRING DIAGRAMS . Repair as necessary.
4) Check vehicle speed sensor. See VEHICLE SPEED SENSOR under
COMPONENT TESTS. Replace as necessary. If sensor is okay, check
harness connectors to instrument cluster. Repair as necessary. If
connectors are okay, check circuit between power supply and instrument
cluster. See WIRING DIAGRAMS . Repair as necessary.
Circuit Test (Montero Sport)
1) Disconnect vehicle speed sensor harness connector. Check
vehicle speed sensor. See VEHICLE SPEED SENSOR under COMPONENT TESTS.
Replace sensor as necessary. If sensor is okay, go to next step.
2) Turn ignition on. Check voltage between ground and vehicle
speed sensor harness-side connector terminal No. 3 (Yellow/White
wire). See WIRING DIAGRAMS . If voltage reading is 4.5 volts, problem
is intermittent. If voltage reading is not 4.5 volts, go to next step.
3) Check vehicle speed sensor harness connector. Repair as
necessary. If connector is okay, check circuit between vehicle speed
sensor and instrument cluster. See WIRING DIAGRAMS. Repair as
necessary. If circuit is okay, go to next step.
4) Check voltage between ground and vehicle speed sensor
harness-side connector terminal No. 1 (Black/White wire). See
WIRING DIAGRAMS . Battery voltage should be present. If battery voltage
is present, problem is intermittent. If battery voltage is not

present, go to next step.
5) Check harness connectors to vehicle speed sensor and
ignition switch. See WIRING DIAGRAMS. Repair as necessary. If
connectors are okay, check circuit between vehicle speed sensor and
ignition switch. Repair as necessary. If circuit is okay, go to next
step.
6) Turn ignition off. Check resistance between ground and
vehicle speed sensor harness-side connector terminal No. 2 (Black
wire). See WIRING DIAGRAMS . Continuity should be present. If
continuity is present, problem is intermittent. If continuity is not
present, check circuit between sensor harness-side connector terminal
No. 2 and ground. Repair as necessary. If circuit is okay, go to next
step.
7) Remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. Check voltage between ground and instrument
cluster harness-side connector terminal No. 53 (Red/Black wire). See
WIRING DIAGRAMS . Battery voltage should be present. If battery voltage
is present, go to step 9). If battery voltage is not present, go to
next step.
8) Check harness connector to instrument cluster. Repair as
necessary. If connector is okay, check circuit between instrument
cluster harness connector and fusible link No. 6. See WIRING DIAGRAMS.
Repair as necessary. If circuit is okay, go to next step.
9) Check voltage between ground and instrument cluster
harness-side connector terminal No. 24 (Black/White wire). See
WIRING DIAGRAMS . Battery voltage should be present. If battery voltage
is present, problem is intermittent. If battery voltage is not
present, check harness connector. Repair as necessary.
TACHOMETER
NOTE: DO NOT reverse polarity when installing tachometer, or diode
and transistor may be damaged.
Calibration Test
Connect a calibrated, reliable tachometer to vehicle ignition
system. Operate engine at various speeds (RPM). See
TACHOMETER ALLOWABLE VARIATION table. If comparison between tach-dwell
meter and vehicle tachometer readings are not within permissible
variation, replace vehicle tachometer.
TACHOMETER ALLOWABLE VARIATION TABLE









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Application &
Engine Speed (RPM) Allowable Variation (RPM)
Eclipse, Galant & 3000GT
1000 .......................................... 900-1100
3000 ......................................... 2850-3150
5000 ......................................... 4750-5250
6000 ......................................... 5700-6300
Mirage, Montero & Montero Sport
700 ............................................ 600-800
3000 ......................................... 2850-3150
5000 ......................................... 4750-5250
6000 ......................................... 5700-6300









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NOTE: Circuit test for Eclipse, Galant, Montero and 3000GT is not
available from manufacturer at time of publication.
Circuit Test (Mirage)
1) Disconnect instrument cluster harness connector. Check

voltage between ground and harness-side connector terminal No. 33
(White wire). See WIRING DIAGRAMS. Voltmeter should read 5 volts. If
voltage is as specified, replace tachometer. If voltage is not as
specified, go to step 4).
2) Check continuity between ground and instrument cluster
harness-side connector terminal No. 34 (Black wire). See
WIRING DIAGRAMS . If continuity is present, replace tachometer. If
continuity is not present, go to step 5).
3) Check voltage between ground and instrument cluster
harness-side connector terminal No. 42 (Black/White wire). See
WIRING DIAGRAMS . Battery voltage should be present. If battery voltage
is present, replace tachometer. If battery voltage is not present, go
to step 6).
4) Check harness connectors to ECM, instrument cluster or
distributor assembly (1.5L). Repair as necessary. If connectors are
okay, check circuit between ECM, instrument cluster and distributor
(1.5L). See WIRING DIAGRAMS . Repair as necessary.
5) Check joint connector to instrument cluster. Repair as
necessary. If connector is okay, check circuit between instrument
cluster and ground. See WIRING DIAGRAMS. Repair as necessary.
6) Check harness and joint connectors to power supply
junction block. Repair as necessary. If connectors are okay, check
circuit between instrument cluster and power supply. See
WIRING DIAGRAMS . Repair as necessary.
Circuit Test (Montero Sport)
1) Remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. Disconnect instrument cluster harness
connector. Connect voltmeter between ground and instrument cluster
harness-side connector terminal No. 14 (White wire). Start and idle
engine. Voltmeter should read about 5 volts. If voltage is as
specified, problem is intermittent. If voltage is not as specified, go
to next step.
2) Check instrument cluster harness connector. Repair as
necessary. If connector is okay, go to next step on 2.4L engines or
step 7) on 3.0L engines.
3) Check noise filter harness connector (located behind
instrument cluster). Repair as necessary. If connector is okay, go to
next step.
4) Check circuit between instrument cluster harness connector
and noise filter connector. See WIRING DIAGRAMS. Repair as necessary.
If circuit is okay, go to next step.
5) Remove noise filter (located near throttle position sensor\
harness). Check resistance between noise filter terminals. Resistance
should be 1760-2640 ohms. If resistance is not as specified, replace
noise filter. If resistance is as specified, go to next step.
6) Check joint connector behind right side of dash. Repair as
necessary. If connector is okay, check circuit between joint connector
and instrument cluster harness connector. See WIRING DIAGRAMS. Repair
as necessary. If circuit is okay, go to next step.
7) Check voltage between ground and instrument cluster
harness-side connector terminal No. 24 (Black/White wire). If battery
voltage is present, problem is intermittent. If battery voltage is not
present, go to next step.
8) Check harness connector to instrument cluster. Repair as
necessary. If connector is okay, check circuit between instrument
cluster and ignition switch. See WIRING DIAGRAMS. Repair as necessary.
If circuit is okay, go to next step.
9) Check circuit between ground and instrument cluster
harness-side connector terminal No. 13 (Black wire). If continuity is
present, problem is intermittent. If continuity is not present, check
harness connector to instrument cluster and to chassis ground. See
WIRING DIAGRAMS . Repair as necessary. If connectors are okay, replace

speedometer.
TEMPERATURE GAUGE
CAUTION: DO NOT connect sender wire directly to ground during test.
Circuit Test
1) Disconnect temperature sender wire from sending unit.
Connect a 12-volt, 3.4-watt test light between connector terminal and
ground. Turn ignition switch to ON position.
2) If test light flashes and temperature gauge needle moves,
go to SENSOR RESISTANCE TEST. If test light does not flash or gauge
needle does not move, repair wiring to sending unit.
Sensor Resistance Test
1) Remove Engine Coolant Temperature (ECT) sensor from
engine. See COMPONENT LOCATIONS . Place sending unit in 158
F (70C)
water. Check sensor resistance using ohmmeter.
2) ECT sensor resistance should be 90-117 ohms. If ECT sensor
resistance is okay, go to GAUGE RESISTANCE TEST. Replace ECT sensor if
resistance is not as specified.
Gauge Resistance Test
1) Remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. On 3000GT, remove air distribution duct and
combination gauges.
2) On all models, check resistance between temperature gauge
terminals at rear of cluster or combination gauges. See
TEMPERATURE GAUGE RESISTANCE SPECIFICATIONS table. See Fig. 21, 22,
23, 24, 25, 26, 27 or 28.
TEMPERATURE GAUGE RESISTANCE SPECIFICATIONS TABLE









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Application ( 1) Terminals Ohms
Eclipse ............... "A" & "B" .............. 161-197
Eclipse ............... "A" & "C" ................ 51-57
Eclipse ............... "B" & "C" .............. 210-256
Galant ................ "B" & "C" .................. ( 2)
Mirage ................ "A" & "B" ................ 86-95
Mirage ................ "A" & "C" .............. 168-206
Mirage ................ "B" & "C" .............. 222-272
Montero ............... No. 4 & 8 .............. 103-128
Montero ............... No. 4 & 9 .............. 221-271
Montero ............... No. 8 & 9 .............. 130-160
Montero Sport ......... "A" & "B" ................... 88
Montero Sport ......... "A" & "C" .................. 103
Montero Sport ......... "B" & "C" .................. 191
3000GT ................ "A" & "B" ................... 51
3000GT ................ "A" & "C" .................. 139
3000GT ................ "B" & "C" .................. 190
( 1) - See Fig. 21, 22, 23, 24, 25, 26, 27 or 28.
( 2) - With positive battery voltage applied to terminal "A",
battery ground applied to terminal "C" and a 50-ohm
resistor connected between battery ground and terminal
"B", needle should be about 1/4 position on gauge.









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Fig. 27: Identifying Temperature Gauge Resistance Test Terminals
(Montero Sport)
Courtesy of Mitsubishi Motor Sales of America
Fig. 28: Identifying Temperature Gauge Resistance Test Terminals
(3000GT)
Courtesy of Mitsubishi Motor Sales of America
VEHICLE SPEED SENSOR

NOTE: Vehicle speed sensor circuit test for Montero and 3000GT is
not available from manufacturer at time of publication.
Circuit Test (Eclipse, Galant & Mirage)
1) Disconnect vehicle speed sensor harness connector. Turn
ignition on. Check voltage between ground and vehicle speed sensor
harness-side connector terminal No. 3 (Yellow/White wire on Eclipse 2.
0L Non-Turbo models and Galant, or Yellow wire on Eclipse 2.0L Turbo
and 2.4L models and Mirage). Voltmeter should read 4.5 volts or
greater. If voltage is as specified, go to step 4). If voltage is not
as specified, go to step 5).
2) Check voltage between ground and vehicle speed sensor
harness-side connector terminal No. 1 (Yellow wire on Eclipse 2.0L
Non-Turbo models, Black/White wire on Eclipse 2.0L Turbo and 2.4L
models and Mirage, or Yellow/White wire on Galant). Voltmeter should
read battery voltage. If voltage is as specified, go to step 4). If
voltage is not as specified, go to step 5).
3) Check continuity between ground and vehicle speed sensor
harness-side connector terminal No. 2 (Black/Green wire on Eclipse 2.
0L Non-Turbo models, or Black wire on Eclipse 2.0L Turbo and 2.4L
models, Galant and Mirage). If continuity is present, go to next step.
If continuity is not present, go to step 5).
4) Check harness connector to instrument cluster. Repair as
necessary. If connector is okay, check circuit between vehicle speed
sensor and power supply. See WIRING DIAGRAMS. Repair as necessary.
5) Check harness connectors to instrument cluster and vehicle
speed sensor. Repair as necessary. If connectors are okay, check
circuit between vehicle speed sensor and instrument cluster. See
WIRING DIAGRAMS . Repair as necessary.
Circuit Test (Montero Sport)
1) Disconnect vehicle speed sensor harness connector. Check
circuit between instrument cluster harness connector and ignition
switch. See WIRING DIAGRAMS . Repair as necessary. If circuit is okay,
go to next step.
2) Remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. Check continuity between ground and instrument
cluster harness-side connector terminal No. 31 (Black wire). See
WIRING DIAGRAMS . If continuity is present, problem is intermittent. If
continuity is not present, go to next step.
3) Check circuit between instrument cluster and ignition
switch. See WIRING DIAGRAMS . Repair as necessary. If circuit is okay,
replace speedometer assembly.
Sensor Test (All Models)
1) Remove vehicle speed sensor from transaxle. Jumper a 3000-
10,000 ohm resistor between sensor terminals No. 1 and 3. Connect
battery positive to sensor terminal No. 1 and battery negative to
sensor terminal No. 2. See Fig. 29.
2) Connect a voltmeter between sensor terminals No. 2 and 3.
Manually turn speed sensor shaft. Voltage should pulse 4 times each
revolution. Replace vehicle speed sensor if operation is not correct.

Fig. 29: Testing Vehicle Speed Sensor
Courtesy of Mitsubishi Motor Sales of America
VOLTMETER
Circuit Test (Montero Sport Only)
1) Remove multi-meter assembly from top of dashboard. Check
voltage between ground and multi-meter harness-side connector terminal
No. 10 (Red/Black wire). If voltage reading is about 12 volts, go to
step 4). If voltage reading is not about 12 volts, go to next step.
2) Check harness connector to multi-meter assembly. Repair as
necessary. If connector is okay, check circuit between multi-meter
harness connector and fusible link No. 6. See WIRING DIAGRAMS. Repair
as necessary. If circuit is okay, go to next step.
3) Turn ignition on. Check voltage between ground and multi-
meter harness-side connector terminal No. 11 (Black/White wire). See
WIRING DIAGRAMS . If voltage reading is about 12 volts, problem is
intermittent. If voltage reading is not about 12 volts, go to next
step.
4) Check harness connector to multi-meter assembly. Repair as
necessary. If connector is okay, check circuit between multi-meter
assembly harness connector and ignition switch. See WIRING DIAGRAMS.
Repair as necessary. If circuit is okay, go to next step.
5) Turn ignition off. Check continuity between ground and
multi-meter assembly harness-side connector terminal No. 3 (Black
wire). If continuity is present, problem is intermittent. If
continuity is not present, go to next step.
6) Check harness connector to multi-meter assembly. Repair as
necessary. If connector is okay, check multi-meter assembly harness
connector ground circuit. See WIRING DIAGRAMS. Repair as necessary. If
circuit is okay, replace multi-meter assembly.

J - PIN VOLTAGE CHARTS
1998 Mitsubishi Montero
1998 ENGINE PERFORMANCE
Mitsubishi - Pin Voltage Charts
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
INTRODUCTION
NOTE: Unless stated otherwise in testing procedures, perform all
voltage tests using a Digital Volt-Ohmmeter (DVOM) with a
minimum 10-megohm input impedance. Voltage readings may vary
slightly due to battery condition or charging rate.
Pin voltage charts are supplied to reduce diagnostic time.
Checking pin voltages at the PCM connector determines whether it is
receiving and transmitting proper voltage signals. Diagnostic charts
may also help determine if PCM harness is shorted or open.
TEST PROCEDURE
CAUTION: Shorting positive DVOM lead between connector terminal and
ground could damage vehicle wiring, sensor and PCM.
1) If necessary, remove Powertrain Control Module (PCM) to
access harness connector. For PCM location, see PCM LOCATION table.
Leave PCM connectors connected.
2) Using DVOM, backprobe terminals. Connect positive DVOM
lead to appropriate PCM terminal. Connect negative DVOM lead to PCM
ground terminal. For PCM terminal identification, see appropriate
chart. See Figs. 1-24.
3) All measurements are applicable to vehicle at normal
operating temperature at sea level. Unless otherwise noted, engine is
idling when specification requires engine running. Ensure transmission
shift selector is in Neutral or Park (as applicable). If DVOM displays\
measurement that is not within specification, see G - TESTS W/CODES
article.
PCM LOCATION TABLE









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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 Others ......................... Behind Center Console









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Fig. 1: Identifying PCM Terminals (Diamante)
Courtesy of Mitsubishi Motor Sales of America