INTRODUCTION
Note. For identification of ECM/PCM harness connectors and wire terminals, see PIN VOLTAGE 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.
| Application | PCM Connector/Terminal No. | (1) Volts |
|---|
| Aerio (2.0) | C46-10 & Ground | (2) 0-5 |
| Grand Vitara (2.5L) | C51-3-9 & C51-3-20 | (4) 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 Aerio & Esteem) 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. |
| (1) | Measured at PCM with ignition on. |
| (2) | Voltage toggles from 0-1 volt to 4-6 volts (4-5 volts on Aerio & Esteem) 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. |
CAMSHAFT POSITION (CMP) SENSOR VOLTAGE
| Application | Ohms @ 68°F (20°C) |
|---|
| All Models | 485-655 |
CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|
| 32 (0) | 5740 |
| 68 (20) | 2280-2610 |
| 104 (40) | 1150 |
| 140 (60) | 584 |
| 176 (80) | 303-326 |
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Fuel Level/Application | (1) Ohms |
|---|
| Full |
| Grand Vitara & XL-7 | 2-4 |
| Vitara | 0-10 |
| 1/2 Full |
| Vitara | 32.5 |
| Empty |
| Grand Vitara & XL-7 | 119-121 |
| Vitara | 90-130 |
| (1) See DTC P0461: FUEL LEVEL SENSOR CIRCUIT PERFORMANCE in appropriate SELF-DIAGNOSTICS article for proper testing and repair procedures. |
| (1) | See DTC P0461: FUEL LEVEL SENSOR CIRCUIT PERFORMANCE in appropriate SELF-DIAGNOSTICS article for proper testing and repair procedures. |
FUEL LEVEL SENSOR RESISTANCE
| CAUTION | Damage to FTP sensor will occur if connections are made incorrectly. |
| Vacuum In.Hg (kPa) | Pressure psi (kPa) | Voltage |
|---|
| 0 | 0 | 2-3 |
| 2.0 (6.6) | — | 0-2 |
| — | 2.0 (6.6) | 3-5 |
FUEL TANK PRESSURE (FTP) SENSOR VOLTAGE
| Application | Ohms |
|---|
| Aerio |
| HO2S-1 | 2-6 |
| HO2S-2 | 4-10 |
| Grand Vitara & XL-7 | 5-7 |
| Vitara |
| With Warm-Up Three-Way Catalyst (WU-TWC) (1) | 4.5-5.7 |
| Without Warm-Up Three-Way Catalyst (WU-TWC) | 11.7-14.3 |
| (1) Applies only to HO2S-1. |
| (1) | Applies only to HO2S-1. |
HEATED OXYGEN SENSOR (HO2S) HEATER 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. |
| (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. |
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE
| CAUTION | Damage to MAP sensor will occur if connections are made incorrectly. |
| Altitude (Feet) | Vacuum (In. Hg) | (1) (2) Volts |
|---|
| 0-2000 | 28-30 | 3.3-4.3 |
| 2001-5000 | 25-28 | 3.0-4.1 |
| 5001-8000 | 22-25 | 2.7-3.7 |
| 8001-10,000 | 20-22 | 2.5-3.3 |
| (1) For proper MAP sensor test procedure, see MANIFOLD ABSOLUTE PRESSURE SENSOR in SYSTEM & COMPONENT TESTING article. (2) Voltage should drop in direct proportion to vacuum applied to MAP sensor port (up to 16 In Hg). |
| (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 VOLTAGE (AERIO)
| CAUTION | Blowing compressed air through mass airflow sensor will damage it. |
| Application | PCM Connector/Terminal No. | (1) Volts |
|---|
| Aerio (2.0) |
| Ign. On, Eng. Off | C46-24 & Ground | 0.5-1.0 |
| Engine At Idle | C46-24 & Ground | 1.3-1.8 |
| 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 |
| Vitara (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 |
| 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. |
| (1) | Voltage should increase as engine speed increases. |
MASS AIRFLOW (MAF) SENSOR VOLTAGE TEST
| 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 CHARTS article.
| 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 (Scheme 1) (2) Voltage should drop in direct proportion to vacuum applied at MAP sensor port (up to 16 In. Hg). |
| (1) | For proper MDP sensor test procedure (Scheme 1) |
| (2) | Voltage should drop in direct proportion to vacuum applied at MAP sensor port (up to 16 In. Hg). |
MANIFOLD DIFFERENTIAL PRESSURE (MDP) SENSOR OUTPUT VOLTAGE (GRAND VITARA, VITARA & XL-7)
Scheme 1
| Application | (1) Ohms |
|---|
| Aerio |
| Between Terminals No. 1 & 2 | 100-6500 |
| Between Terminals No. 1 & 3 (2) | 4000-6000 |
| Grand Vitara |
| Between Terminals No. 1 & 3 | 4000-6000 |
| Between Terminals No. 2 & 3 (2) | 0-4600 |
| Vitara |
| Between Terminals 1 & 2 (2) | 20-6000 |
| Between Terminals 1 & 3 | 4000-6000 |
| XL-7 |
| Between Terminals No. 1 & 2 (2) | 20-6000 |
| Between Terminals No. 1 & 3 | 4000-6000 |
| (1) See figure for terminal identification (Scheme 2). (2) Varying depending on degree of throttle valve opening. |
| (1) | See figure for terminal identification (Scheme 2). |
| (2) | Varying depending on degree of throttle valve opening. |
THROTTLE POSITION (TP) SENSOR RESISTANCE
Scheme 2
| Application | (1) Volts |
|---|
| Aerio (2) (3) |
| At Idle | .35-.65 |
| At Wide Open Throttle | 3.5-4.5 |
| Grand Vitara (2) (3) |
| At Idle | .35-.65 |
| At Wide Open Throttle | 3.5-4.5 |
| Vitara (2) (3) |
| At Idle | .5-1.2 |
| At Wide Open Throttle | 3.4-4.7 |
| XL-7 (2) (3) |
| At Idle | .49-.91 |
| At Wide Open Throttle | 3.76-4.36 |
| (1) Ignition on and engine off. (2) Measure TP sensor voltage using Suzuki scan tool connected to DLC and ignition switch in LOCK position. (Scheme 3) (3) With engine at normal operating temperature. |
| (1) | Ignition on and engine off. |
| (2) | Measure TP sensor voltage using Suzuki scan tool connected to DLC and ignition switch in LOCK position. (Scheme 3) |
| (3) | With engine at normal operating temperature. |
THROTTLE POSITION (TP) SENSOR VOLTAGE
Scheme 3
| Model | Location | (1) Ohms |
|---|
| Aerio | Tranxaxle | 648-792 |
| Grand Vitara | Transmission | 369-451 |
| Vitara & XL-7 | Transmission | 387-473 |
| (1) At 68 Degrees F. |
VEHICLE SPEED SENSOR RESISTANCE
| 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. |
| (1) | With ignition on and right rear tire rotating while holding left rear tire stationary. |
VEHICLE SPEED SENSOR (VSS) VOLTAGE (ON-VEHICLE)
