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Engine Controls - Sensor Operating Range Charts: Introduction

NOTE: For identification of ECM/PCM harness connectors and wire terminals, see PIN VOLTAGE/CIRCUIT RESISTANCE CHARTS article.

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 (1.6L) & SWIFT

Temperature °F (°C) (1) 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

Application PCM Connector/Terminal No. (1) Volts
Esteem (1.6L) & Swift (1.3L) C22-2 & Ground (2) 0-5
Esteem (1.8L) C20-10 & E92-35 (2) 0-5
Grand Vitara (2.5L) C51-3-9 & C51-3-20 (4) 0-6
Vitara (1.6L) C51-2-26 & Ground (2) 0-6
Vitara (2.0L) C51-2-26 & C51-3-26 (3) 0-5.25
XL-7 (2.7L) C51-1-12 & C51-3-26 (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 (1.6L), Swift (1.3L) & Vitara (1.6L) 360-460
Esteem (1.8L), Vitara (2.0L), Grand Vitara (2.5L) & XL-7 (2.7L) 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

Fuel Level/Application (1) Ohms
Full
Esteem, Swift & Vitara 0-10
Grand Vitara & XL-7 2-4
1/2 Full
Esteem, Swift & Vitara 32.5
Empty
Esteem 120
Swift 100
Vitara 90-130
Grand Vitara & XL-7 119-121
(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

Vacuum In.Hg (kPa) Pressure psi (kPa) (1) Voltage
0 0 2-3
2.0 (6.6) ..... 0-2
..... 2.0 (6.6) 3-5
(1) For proper MAP sensor test procedure, see Fig. 4: in TESTING MAP, MDP & FTP SENSORS under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article for proper testing procedures.
HEATED OXYGEN SENSOR (HO2S) HEATER RESISTANCE

Application (1)(2) Ohms
Esteem (1.6L) 11.7-15.6
Esteem (1.8L)
HO2S-1 2-6
HO2S-2 4-10
Grand Vitara, Swift & XL-7 5-7
Vitara
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 (1.6L) & SWIFT

Altitude (Feet) Vacuum (In. Hg) (1)(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 (1.6L) & SWIFT

Vacuum (In. Hg) (1) Scan Tool Display (kPa)
0 100
8 73
20 33
(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 & XL-7)

Application PCM Connector/Terminal No. (1) Volts
Esteem (1.8L)
Ign. On, Eng. Off C20-24 & Ground .5-1.0
Engine At Idle C20-24 & Ground 1.3-1.8
Vitara (1.6L & 2.0L)
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 C51-3-20 & C51-3-23 0.5-1.0
Engine At Idle B/20 & B/23 1.5-1.8
XL-7 (2.7L)
Ign. On, Eng. Off C51-3-10 & C51-3-5 1.0-1.6
Engine At Idle C51-3-10 & C51-3-5 1.7-2.0
(1) Voltage should increase as engine speed increases.
CAUTION: Damage to MDP sensor will occur if connections are made incorrectly.
NOTE: For identification of ECM/PCM harness connectors and wire terminals, see PIN VOLTAGE/CIRCUIT RESISTANCE CHARTS article.
MANIFOLD DIFFERENTIAL PRESSURE (MDP) SENSOR RESISTANCE (ESTEEM (1.8L), GRAND VITARA, VITARA & XL-7)

Vacuum (In. Hg) (1)(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 No. 1 & 2 2500-6000
Between Terminals No. 1 & 3
At Idle 100
At Wide Open Throttle 20,000
Grand Vitara,Vitara & XL-7
Between Terminals No. 1 & 3 4000-6000
Between Terminals No. 1 & 2 (Vitara & XL-7)
At Idle 20
At Wide Open Throttle 6000
Between Terminals No. 2 & 3 (Grand Vitara)
At Idle 0
At Wide Open Throttle 4600
THROTTLE POSITION (TP) SENSOR VOLTAGE

Application (1) Volts
Esteem (1.6L) (2)
At Idle .2-.1.0
At Wide Open Throttle 2.8-4.8
Esteem (1.8L) & Grand Vitara (2.5L) (2)
At Idle .35-.65
At Wide Open Throttle 3.5-4.5
Swift (1.3L) (2)
At Idle .1-1.0
At Wide Open Throttle 2.8-4.8
Vitara (1.6L & 2.0L) (2)
At Idle .5-1.2
At Wide Open Throttle 3.4-4.7
XL-7 (2.7L) (2)
At Idle .51-.91
At Wide Open Throttle 3.7-4.4
(1) Ignition on and engine off.
(2) Measure voltage at ECM connector terminal No. C20-6 (Esteem 1.6L), C20-25 (Esteem 1.8L), C51-3-9, (Vitara 1.6L & 2.0L), C51-3-12 (Grand Vitara), C51-3-9 (XL-7) and C22-6 (Swift). See PIN VOLTAGE/CIRCUIT RESISTANCE CHARTS article.
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
Grand Vitara B/1 and Ground 0-1 to 8-14
Vitara C51-2-25 & Ground 0-1 to 8-14
XL-7 C51-1-14 & Ground 0-1 to 4-14
(1) With ignition on and right rear tire rotating while holding left rear tire stationary.
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