�K -SENSOR RANGE CHARTS

�1993 Nissan Sentra

1993 ENGINE PERFORMANCE Nissan Sensor Operating Range Charts

Altima, Maxima, NX, Pathfinder, Pickup, Quest, Sentra, 240SX, 300ZX

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: 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 appropriate wiring diagram in appropriate L - WIRING DIAGRAMS article.

AIR TEMPERATURE SENSOR TABLE (1)

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Temperature

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Application F ( C) Ohms

Pickup 2.4L .......... 68 (20) ............. 2100-2900 .................... 176 (80) ............... 270-380

(1) - Measure resistance between sensor terminals.

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MASS AIRFLOW SENSOR (KEY ON, ENGINE OFF) TABLE (1)

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Application Terminal No. Volts

Altima	........................	16	...................
Maxima	........................	27	.........	Less Than 0.4
NX & Sentra
1.6L	.........................	16	.........	Less Than 1.0
2.0L	.........................	16	.........	Less Than 1.0
Pathfinder & Pickup 3.0L
		16
			Less Than 1.0
Quest	.........................	16	.........	Less Than 0.5
240SX	.........................	16	...........		Approx. 0.2
300ZX	.........................	27	...........		Approx. 0.8

(1) - Measure voltage between ground and indicated ECU terminal with ignition switch in ON position, engine not running.

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MASS AIRFLOW SENSOR (ENGINE IDLING) TABLE (1)

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Application Terminal No. Volts

Altima ........................ 16 ............... 0.8-0.3 Maxima ........................ 27 ............... 1.0-1.3 NX & Sentra

1.6L ......................... 16 ............... 0.7-1.1

2.0L ......................... 16 ............... 1.3-1.7 Pathfinder & Pickup 3.0L

16
1.5-2.0
Quest	.........................	16	...............	1.0-1.7
240SX	.........................	16	...............	1.0-1.4
300ZX	.........................	27	...............	0.8-1.5

(1) - Measure voltage between ground and indicated ECU terminal with engine idling at normal operating temperature.

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COOLANT TEMPERATURE SENSOR RESISTANCE TABLE (1)

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Temperature

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F ( C) Ohms

68 (20) .......................................... 2100-2900 122 (50) .......................................... 680-1000 176 (80) ........................................... 300-330

(1) - Measure resistance across sensor terminals.

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EGR TEMPERATURE SENSOR RESISTANCE TABLE (1)

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Temperature

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

(1) - Heat sensor in boiling water, and measure resistance across sensor terminals.

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FUEL TEMPERATURE SENSOR RESISTANCE (300ZX) TABLE (1)

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Temperature

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F ( C) Ohms

68 (20) .......................................... 2100-2900 122 (50) .......................................... 680-1000 176 (80) ........................................... 300-330

(1) - Measure resistance between sensor terminals.

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OXYGEN SENSOR VOLTAGE TABLE (1)

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Condition Volts

Lean ................................................... 0.1 Rich ................................................... 1.0

(1) - With engine running at normal operating temperature, measure voltage between oxygen sensor connector terminal (center terminal on heated oxygen sensors) and ground.

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THROTTLE POSITION SENSOR RESISTANCE TABLE (1)

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Position Ohms Altima & 240SX

Closed Throttle ...................................... 2000 Partially Open ................................ 2000-10,000 Wide Open Throttle ................................. 10,000

Maxima, Pathfinder, Pickup, Quest & 300ZX Closed Throttle ...................................... 1000 Partially Open .................................. 1000-9000 Wide Open Throttle ................................... 9000

NX & Sentra Closed Throttle ...................................... 1000 Partially Open .................................. 1000-9000 Wide Open Throttle ................................... 9000

(1) - Measure resistance between terminals "B" (White wire) and "C" (power wire) on sensor. Black wire is ground circuit (not used on this test).

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THROTTLE POSITION SENSOR VOLTAGE TABLE (1)

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Application								Volts
Altima, Pathfinder,
Pickup 3.0L & Quest					..........	20	...............	0.4-4.0
Maxima
VE30DE (VIN E)			...............			38	...............	0.4-4.0
VG30E (VIN H)			................			38	...............	0.5-4.2
NX, Sentra & 240SX				............		20	...............	0.4-5.0
Pickup 2.4L		...................				20	...............	0.5-4.0
300ZX	.........................					38	...............	0.4-4.0

(1) - Turn ignition on. Measure voltage between ground and indicated ECU terminal. Observe voltage while opening and closing throttle valve.

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VEHICLE SPEED SENSOR CONTINUITY TABLE

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Application Reading

All Models ............................................ (1)

(1) - Check continuity between sensor terminals while turning wheel. Ohmmeter reading should fluctuate between continuity and infinity.

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