1995 Acura Integra GS-R, 4D SedanFACTORY OEM SERVICE PROCEDURE

Engine Controls - Sensor Operating Range Charts: Introduction

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temperature - °F (°C) (1) Ohms
-4 (-20) 15,000-18,000
68 (20) 1000-4000
176 (80) 200-400
248 (120) 50-150
(1) Measure resistance across sensor terminals.
IGNITION SENSOR RESISTANCE

Application ECM Terminals Ohms
CRANK B15 & B16 350-700
CYL B11 & B12 350-700
TDC B13 & B14 350-700
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (1)

Temperature - °F (°C) Ohms
-4 (-20) 15,000-18,000
68 (20) 2000-4000
176 (80) 300-400
(1) Measure resistance between sensor terminals.
MAP SENSOR VOLTAGE (1)

Vacuum Applied (In. Hg) Volts
0 2.8-3.0
5 2.3-2.5
10 1.8-2.0
15 1.3-1.5
20 .8-1.0
25 .3-.5
(1) Measure voltage between ECU terminals C11 (positive) and C12 (negative).
OXYGEN SENSOR VOLTAGE (1)

Condition Volts
Lean .1
Rich .9
(1) Measure voltage between ground and O2 sensor terminal using a high-impedance DVOM.
THROTTLE POSITION (TP) SENSOR VOLTAGE (1)

Position Approximate Volts
Fully Closed 0.1-0.5
Fully Open 4.5-4.8
(1) Measure resistance between terminals D11 (positive) and D22 (negative). Voltage should increase smoothly as throttle is opened.
VEHICLE SPEED SENSOR (VSS) VOLTAGE (1)

Model Approximate Volts
Integra (2)
(1) Measure voltage between terminals B10 (positive) and A26 (negative).
(2) Rotate left front wheel slowly. Voltage should pulse between zero and 10 volts.
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