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.

For individual component and system diagnostic test procedures, see SYSTEM & COMPONENT TESTING article.

CAMSHAFT POSITION (CMP) SENSOR RESISTANCE - ESTEEM & SWIFT ⁽¹⁾

Temperature °F (°C)

Ohms

14-122 (-10-50)

185-275

122-212 (50-100)

240-325

⁽¹⁾	Measured at sensor while disconnected with ignition off.

CAMSHAFT POSITION (CMP) SENSOR VOLTAGE ⁽¹⁾

Application

PCM Connector/Terminal No.

Volts

Esteem & Swift

B/2 & Ground

⁽²⁾ 0-5

Vitara 1.6L

C51-2-26 & Ground

⁽²⁾ 0-6

Vitara 2.0L

C51-2-26 & C51-3-26

⁽³⁾ 0-5.25

Grand Vitara

B/9 & B/20

⁽⁴⁾ 0-6

⁽¹⁾	Measured at PCM with ignition on.

⁽²⁾	Voltage toggles from 0-1 volt to 4-6 volts (4-5 volts on Esteem and Swift) as magnet is passed by sensor face (one mm distance).

⁽³⁾	Voltage toggles from 0-1 volt to 4-6 volts as CMP sensor coupling is rotated.

⁽⁴⁾	Voltage toggles from 0-1 volt to 4-6 volts as crankshaft is turned slowly.

CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE

Application	Ohms @ 68°F (20°C)
Esteem, Swift & Vitara 1.6L	360-460
Vitara 2.0L & Grand Vitara 2.5L	485-655

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temperature °F (°C)	Ohms
32 (0)	5740
68 (20)	2280-2610
104 (40)	1150
140 (60)	584
176 (80)	303-326

FUEL LEVEL SENSOR RESISTANCE ⁽¹⁾

Fuel Level/Application

Ohms

Full

Esteem, Swift & Vitara 1.6L & 2.0L

0-10

Grand Vitara 2.5L

2-4

1/2 Full

Esteem, Swift & Vitara 1.6L & 2.0L

32.5

Empty

Esteem

120

Swift

100+

Vitara 1.6L & 2.0L

90-130

Grand Vitara 2.5L

119-121

⁽¹⁾	See DTC P0461: FUEL LEVEL SENSOR CIRCUIT PERFORMANCE in appropriate SELF-DIAGNOSTICS article for proper testing and repair procedures.

CAUTION: Damage to FTP sensor will occur if connections are made incorrectly.

FUEL TANK PRESSURE (FTP) SENSOR VOLTAGE ⁽¹⁾

Vacuum In.Hg (kPa)

Pressure psi (kPa)

Voltage

2-3

2.0 (6.6)

.....

0-2

.....

2.0 (6.6)

3-5

⁽¹⁾	See FIG. 4: TESTING MAP, MDP & FTP SENSORS under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article for proper hookup and test procedures.

HEATED OXYGEN SENSOR (HO2S) HEATER RESISTANCE ⁽¹⁾

Application

⁽²⁾ Ohms

Esteem, Grand Vitara 2.5L & Swift

5-7

Vitara 1.6L & 2.0L

With Warm-Up Three-Way Catalyst (WU-TWC)

4.5-5.7

Without Warm-Up Three-Way Catalyst (WU-TWC) ⁽³⁾

11.7-14.3

⁽¹⁾	Ohms values apply to both HO2S-1 and HO2S-2 sensors.

⁽²⁾	Measure resistance of HO2S heater at 68°F (20°C).

⁽³⁾	Applies only to HO2S-1.

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temperature °F (°C)

⁽¹⁾ Ohms

32 (0)

5880

68 (20)

2210-2690

104 (40)

1140

140 (60)

580

176 (80)

290-350

⁽¹⁾	Approximate values are given. See INTAKE AIR TEMPERATURE (IAT) SENSOR under SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article for resistance graph and test procedure.

CAUTION: Damage to MAP sensor will occur if connections are made incorrectly.

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR OUTPUT VOLTAGE (OFF-VEHICLE) - ESTEEM & SWIFT ⁽¹⁾

Altitude (Feet)

Vacuum (In. Hg)

⁽²⁾ Volts

0-2000

28-30

3.1-3.6

2001-5000

25-28

2.8-3.4

5001-8000

22-25

2.6-3.1

8001-10,000

20-22

2.4-2.9

⁽¹⁾	For proper MAP sensor test procedure, see Fig. 4: TESTING MAP, MDP & FTP SENSORS under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article.

⁽²⁾	Voltage should drop in direct proportion to vacuum applied to MAP sensor port (up to 16 In Hg).

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR OUTPUT (ON-VEHICLE) - ESTEEM & SWIFT ⁽¹⁾

Vacuum (In. Hg)

Scan Tool Display (kPa)

100

⁽¹⁾	With scan tool installed, ignition on, and specified vacuum applied to MAP sensor.

CAUTION: Blowing compressed air through mass airflow sensor will damage it.

MASS AIRFLOW (MAF) SENSOR VOLTAGE TEST (GRAND VITARA & VITARA) ⁽¹⁾

Application

PCM Connector/Terminal No.

Volts

Vitara 1.6L & 2.0

Ign. On, Eng. Off

C51-3-10 & Ground

1.0-1.6

Engine At Idle

C51-3-10 & Ground

1.7-2.0

Grand Vitara 2.5L

Ign. On, Eng. Off

B/20 & B/23

0.5-1.0

Engine At Idle

1.5-1.8

⁽¹⁾	Voltage should increase as engine speed increases.

CAUTION: Damage to MDP sensor will occur if connections are made incorrectly.

MANIFOLD DIFFERENTIAL PRESSURE (MDP) SENSOR RESISTANCE (GRAND VITARA & VITARA) ⁽¹⁾

Vacuum (In. Hg)

⁽²⁾ Volts

7.8

2.40-4.40

9.8

2.13-4.13

11.8

1.86-3.86

13.8

1.59-3.59

15.7

1.39-3.32

⁽¹⁾	For proper MDP sensor test procedure, see TESTING MAP, MDP & FTP SENSORS under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article.

⁽²⁾	Voltage should drop in direct proportion to vacuum applied at MAP sensor port (up to 16 In Hg).

THROTTLE POSITION (TP) SENSOR RESISTANCE

Application			Ohms
Esteem & Swift
Between Terminals 1 & 2			2500-6000
Between Terminals 1 & 3
At Idle			100
At Wide Open Throttle			20,000
Vitara & Grand Vitara
Between Terminals 1 & 3			4000-6000
Between Terminals 1 & 2 (Vitara)
At Idle			20
At Wide Open Throttle			6000
Between Terminals 2 & 3 (Grand Vitara)
At Idle			0
At Wide Open Throttle			4600

THROTTLE POSITION (TP) SENSOR VOLTAGE ⁽¹⁾

Application

PCM Connector/Terminal No.

Volts

Esteem & Swift

Throttle Closed

B/6 & Ground

0.2-1.0

Throttle Open

B/6 & Ground

2.8-4.8

Vitara 1.6L & 2.0L

Throttle Closed

C51-3-9 & Ground

0.5-1.2

Throttle Open

C51-3-9 & Ground

3.4-4.7

Grand Vitara 2.5L

Throttle Closed

B/12 & Ground

0.35-0.65

Throttle Open

B12 & Ground

3.5-4.5

⁽¹⁾	Ignition on, engine off.

VEHICLE SPEED SENSOR (VSS) RESISTANCE

Application

Ohms

Esteem & Swift

⁽¹⁾ 300-450

⁽¹⁾	With ohmmeter connected to vehicle speed sensor terminals, ohmmeter should alternate between zero ohms and infinity as output shaft revolves.

VEHICLE SPEED SENSOR (VSS) VOLTAGE (ON-VEHICLE)

Application

PCM Connector/Terminal No.

⁽¹⁾ Voltage

Vitara

C51-2-25 & Ground

0-1 to 8-14

Grand Vitara

B/1 and Ground

0-1 to 8-14

⁽¹⁾	With ignition on and right rear tire rotating while holding left rear tire stationary.