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: Perform all voltage tests using a digital volt-ohmmeter (dvom) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. To identify ecu terminals, see wiring diagram in L - wiring diagrams article.

CAMSHAFT POSITION SENSOR VOLTAGE TEST ⁽¹⁾

Application

Wire Color (1-Degree Signal)

Wire Color (120/180-Degree Signal)

Sentra ⁽²⁾

Black/White

Blue

⁽¹⁾	Measure voltage between indicated wire color terminals.

⁽²⁾	Voltage pulse signal should be approximately 2.7 volts.

CRANKSHAFT POSITION SENSOR RESISTANCE @ 77°F (25°C)

Application	Ohms
With A/T	166-204
With M/T	432-528

ENGINE (COOLANT) TEMPERATURE SENSOR RESISTANCE

Temperature - °F (°C)	Ohms
68 (20)	2100-2900
122 (50)	680-1000
176 (80)	300-330
194 (90)	236-260

EXHAUST GAS TEMPERATURE SENSOR RESISTANCE

Temperature - °F (°C)	Ohms
212 (100)	76,770-93,830

INHIBITOR SWITCH CONTINUITY

Lever Position	8-Pin Connector Terminals No.	2-Pin Connector Terminals No.
"P"	3 & 4	1 & 2
"R"	3 & 5	N/A
"N"	3 & 6	1 & 2
"D"	3 & 7	N/A
"2"	3 & 8	N/A
"1"	3 & 9	N/A

INTAKE AIR TEMPERATURE SENSOR RESISTANCE

Temperature - °F (°C)	Ohms
68 (20)	2100-2900
122 (50)	600-1000

KNOCK (DETONATION) SENSOR RESISTANCE @ 77°F (25°C)

Application	Ohms
Sentra	500,000-620,000

MASS AIRFLOW SENSOR VOLTAGE TEST ⁽¹⁾

Application

Volts ⁽²⁾ With KOEO

Volts At Idle

Sentra

Less Than 1.0

1.0-1.7

⁽¹⁾	Values are approximate and vary with engine RPM.

⁽²⁾	Key On, Engine Off.

OXYGEN SENSOR OPERATING RANGE

Application

⁽¹⁾ Min. Volts @ RPM

⁽²⁾ Max. Volts @ RPM

Rear HO2S

⁽³⁾ 0.55 @ 6000

N/A

⁽¹⁾	Minimum voltage should be below specified value at least once.

⁽²⁾	Maximum voltage should be above specified value at least once.

⁽³⁾	Measured while increasing engine speed to 6000 RPM under no load or at idle.

OXYGEN SENSOR HEATER ELEMENT RESISTANCE @ 77°F (25°C)

Application	Ohms
Front HO2S	3.3-6.3
Rear HO2S	5.2-8.2

POWER STEERING OIL PRESSURE SWITCH

Condition	Continuity
Steering Unloaded (Not Turning Steering Wheel)	No
Steering Loaded (Turning Steering Wheel)	Yes

THROTTLE POSITION SENSOR RESISTANCE TEST

Application	Wire Colors	k/Ohms
Sentra	Yellow & Black	0.6-4.0

VEHICLE SPEED SENSOR

Application

⁽¹⁾ AC Voltage

Sentra

0.5

⁽¹⁾	Measured while rotating sensor shaft by hand, check AC voltage across sensor connector terminals.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Engine Controls - Sensor Operating Range Charts 1.6L: Introduction

Use the Manual With the Right Hardware

When to See a Mechanic

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