1998 Mitsubishi MonteroFACTORY OEM SERVICE PROCEDURE

Engine Controls - Sensor Operating Range Charts: Introduction: Notes

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a diagnostic trouble code, but it may cause driveability problems. For sensors not listed in this article, see appropriate TESTS W/CODES article.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. For connector terminal identification, see TERMINAL IDENTIFICATION in appropriate TESTS W/CODES article.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE (1)

Application & Temperature °F (°C) Ohms
Diamante, & Eclipse Turbo & 2.4L
32 (0) 5100-6500
68 (20) 2100-2700
104 (40) 900-1300
176 (80) 260-360
Eclipse 2.0L Non-Turbo
77 (25) 9000-11,000
212 (100) 600-800
Galant, Mirage & Montero Sport
68 (20) 2100-2700
176 (80) 260-360
Montero & 3000GT
32 (0) 5800
68 (20) 2400
104 (40) 1100
176 (80) 300
(1) Check resistance across ECT sensor terminals.
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Application & Temperature °F (°C) Ohms
Diamante, & Eclipse Turbo & 2.4L (1)
32 (0) 5300-6700
68 (20) 2300-3000
104 (40) 1000-1500
176 (80) 300-420
Eclipse 2.0L Non-Turbo (2)
77 (25) 9000-11,000
212 (100) 600-800
Galant, Mirage 1.8L & Montero Sport (1)
68 (20) 2300-3000
176 (80) 300-420
Mirage 1.5L (2)
68 (20) 2300-3000
176 (80) 300-420
Montero & 3000GT (1)
32 (0) 6000
68 (20) 2700
176 (80) 400
(1) IAT sensor is incorporated in airflow sensor assembly. Check resistance between IAT sensor terminals No. 5 and 6. See Fig 1 -Fig 4 .
(2) Check resistance across IAT sensor terminals No. 1 and 2. See Fig 1 -Fig 4 .
Fig 1: IAT Sensor Terminals (Eclipse 2.0L Non-Turbo)
G95D31149Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
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