1998 MITSUBISHI MONTERO Service Manual

Fig. 21: Identifying Temperature Gauge Resistance Test Terminals
(Eclipse 2.0L Non-Turbo & 2.4L)
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Fig. 22: Identifying Temperature Gauge Resistance Test Terminals
(Eclipse 2.0L Turbo)
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Fig. 23: Identifying Temperature Gauge Resistance Test Terminals
(Galant)
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Fig. 24: Identifying Temperature Gauge Resistance Test Terminals
(Mirage - With Tachometer)

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Fig. 25: Identifying Temperature Gauge Resistance Test Terminals
(Mirage - Without Tachometer)
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Fig. 26: Identifying Temperature Gauge Resistance Test Terminals
(Montero)
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Fig. 27: Identifying Temperature Gauge Resistance Test Terminals
(Montero Sport)
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Fig. 28: Identifying Temperature Gauge Resistance Test Terminals
(3000GT)
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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.

Resistance Test (Montero Only)
Using an ohmmeter, check resistance between voltmeter
terminals. See Fig. 30. Resistance should be 380-460 ohms.
Fig. 30: Identifying Voltmeter Resistance Test Terminals (Montero)
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Voltage Test (3000GT Only)
Start engine, and let it idle. Connect voltmeter to battery.
Compare voltage reading of test voltmeter to voltage reading of
vehicle voltmeter. Voltage variation should not exceed 0.5 volt (plus
or minus). Replace instrument cluster voltmeter if voltage reading is
not as specified.
FOGLIGHT SWITCH TEST
NOTE: Montero Sport is not equipped with foglights.
Eclipse
Remove foglight switch from instrument panel. Disconnect
switch connector. Using an ohmmeter, check switch continuity. With
switch in OFF position, continuity should exist between terminals No.
1 and 3. With switch in ON position, continuity should exist between
terminals No. 1 and 3, and between terminals No. 4 and 5. See Fig. 31.
If continuity is not as specified, replace switch.
Galant & Mirage
Remove foglight switch from instrument panel. Disconnect
switch connector. Using an ohmmeter, check switch continuity. With
switch in OFF position, continuity should exist between terminals No.
1 and 2. With switch in ON position, continuity should exist between
terminals No. 1 and 2, terminals No. 3 and 4, and terminals No. 5 and
6. See Fig. 31. If continuity is not as specified, replace switch.