2003 Suzuki Aerio GS, AWD, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Controls - Sensor Operating Range Charts: 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.

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

CAMSHAFT POSITION (CMP) SENSOR VOLTAGE

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.
CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE

Application Ohms @ 68°F (20°C)
All Models 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
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.
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) Voltage
0 0 2-3
2.0 (6.6) ..... 0-2
..... 2.0 (6.6) 3-5
HEATED OXYGEN SENSOR (HO2S) HEATER RESISTANCE

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.
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 (AERIO)

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).
CAUTION: Blowing compressed air through mass airflow sensor will damage it.
MASS AIRFLOW (MAF) SENSOR VOLTAGE TEST

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

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.