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HOMESERVICE MANUALSNISSAN-DATSUN2001MAXIMA GXE, AUTOMATIC, RE4F04WREPAIR AND DIAGNOSISENGINE PERFORMANCESENSOR RANGE CHARTSENGINE CONTROLS - SENSOR OPERATING RANGE CHARTSINTRODUCTION

2001 Nissan-Datsun Maxima GXE, Automatic, RE4F04W

Engine Controls - Sensor Operating Range Charts: Introduction

2001 Nissan-Datsun Maxima GXE, Automatic, RE4F04WSECTION Introduction

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.

NOTE: Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Using an oscilloscope may provide better test results on some sensors. For oscilloscope waveforms and ECM terminal identification, see PIN VOLTAGE CHARTS article.

CAMSHAFT POSITION SENSOR RESISTANCE

Application		Ohms @ 68°F (20°C)
I30 & Maxima
Hitachi Sensor		1440-1760
Mitsubishi Sensor		2090-2550

CAMSHAFT POSITION SENSOR VOLTAGE

ECM Terminal No.

Volts At Idle ⁽¹⁾

⁽¹⁾ Voltage At 2000 RPM

Altima

2.5

2.3-2.5

0.1-0.5

0.2-0.4

Frontier & Xterra (2.4L)

44 Or 48

0.2-0.5

0.0-0.5

2.6

2.5-2.6

Frontier & Xterra (3.3L) & Pathfinder

44 Or 48

0.3-0.5

2.5

Maxima

4.2 ⁽²⁾

⁽³⁾

Quest

44 Or 48

0.3-0.5

2.5

Sentra (1.8L)

Without NVIS (NATS)

76 Or 85

3.0-4.0

With NVIS (NATS)

66 Or 75

3.0-4.0

Sentra (2.0L)

Without NVIS (NATS)

76 Or 85

0.1-0.4

2.6

2.5

With NVIS (NATS)

66 Or 75

0.1-0.4

2.6

2.5

⁽¹⁾	Voltage measurement is approximate.

⁽²⁾	A/C volts.

⁽³⁾	Information not available from manufacturer

CRANKSHAFT POSITION SENSOR RESISTANCE

Application

Ohms @ 77°F (25°C)

Altima

512-632

Frontier & Xterra

⁽¹⁾ 512-632

Maxima & Pathfinder

470-570

Quest

⁽¹⁾ 512-632

Sentra (2.0L Engine)

⁽¹⁾ 166-204

⁽¹⁾	Sensor resistance is measured at 68°F (20°C).

EGR TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)	Volts	K/Ohms
Altima
32 (0)	4.61	680-1110
122 (50)	2.53	90-120
212 (100)	0.87	17-24
Sentra
1.8L
32 (0)	4.56	620-1050
122 (50)	2.25	65-94
212 (100)	0.59	11-15
2.0L
32 (0)	4.56	730-890
122 (50)	2.25	74-82
212 (100)	0.59	12-14
Frontier & Xterra (2.4L)
32 (0)	4.81	620-1050
122 (50)	2.82	65-94
212 (100)	0.59	11-15

ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE

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

HO2S HEATER RESISTANCE

Application

⁽¹⁾ Ohms @ 77°F (25°C)

Front & Rear HO2S Heater

2.3-4.3

⁽¹⁾	Measure resistance between appropriate HO2S terminals. For complete HO2S testing, see appropriate DTC test in appropriate SELF-DIAGNOSTICS article.

HO2S OPERATING RANGE VOLTAGE

Application

Lean Volts

Rich Volts

Front HO2S ⁽¹⁾

0.0-0.3

0.6-1.0

Rear HO2S

Except Altima, Frontier 2.4L, Sentra & Xterra 2.4L ⁽²⁾

0.0-0.3

0.6-1.0

Altima, Frontier 2.4L, Sentra & Xterra 2.4L ⁽³⁾

0.0-0.3

0.6-1.0

⁽¹⁾	Maintain engine speed at 2000 RPM.

⁽²⁾	Revving engine from idle up to 2000 RPM.

⁽³⁾	Revving engine from idle up to 3000 RPM.

INTAKE AIR TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)	Ohms
68 (20)	2100-2900
176 (80)	270-380

KNOCK SENSOR RESISTANCE

Application

Ohms @ 77°F (25°C)

Except Altima, Frontier, I30, Maxima & Sentra

⁽¹⁾ 500,000-620,000

Altima, Frontier, I30, Maxima & Sentra

⁽²⁾ 500,000-620,000

⁽¹⁾	Measured between knock sensor terminal No. 2 and ground.

⁽²⁾	Measured between knock sensor terminal No. 1 and ground.

MASS AIRFLOW SENSOR VOLTAGE ⁽¹⁾

Application

Volts At Idle ⁽²⁾

⁽²⁾ Volts At 2500 RPM

Altima

1.0-1.7

1.8-2.4

Frontier & Xterra

4-Cylinder

0.9-1.8

1.9-2.3

1.0-1.7

1.7-2.3

I30 & Maxima

1.2-1.8

1.6-2.2

Pathfinder & QX4

1.0-1.7

1.7-2.3

Quest

1.0-1.7

1.7-2.3

Sentra

1.8L

1.0-1.7

1.5-2.4

2.0L

1.3-1.7

1.8-2.4

⁽¹⁾	Values are approximate and vary with engine RPM. Voltage should be less than one volt with Key On, Engine Off (KOEO).

⁽²⁾	With engine at normal operating temperature, specified speed and no load.

POWER STEERING OIL PRESSURE SWITCH

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

FUEL TANK TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)	Ohms
68 (20)	2300-2700
122 (50)	790-900

THROTTLE POSITION (TP) SENSOR VOLTAGE

Application		Volts
Except Frontier & Xterra (2.4L)
Throttle Fully Closed		0.15-0.85
Throttle Fully Open		3.5-4.7
Frontier & Xterra (2.4L)
Throttle Fully Closed		0.2-0.8
Throttle Fully Open		3.5-4.5

RENDER: 1.0x

NO RELATED

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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.