I cannot find the crank sensor

First of all, if the engine turns over, you DON'T need a starter or an ignition switch. Don't fall into the 'let's try replacing this' method of car repair! It is costly and never works.

First replace the cap cap, it is part of the pressurized fuel system and may be the answer to all the issues. $20 from Walmart, or $15 from Napa Auto Parts.

Then connect a code reader and find why that Engine Light comes on. Your vehicle has a computer that records everything that is wrong with it. A cheap code reader gives you the basics, a $5,000 scan tool computer tells you everything, historically and in real time as the vehicle is starting of being driven.

The other thing to check is that the battery is good. Interstate will test for you for free in the parking lot and only takes 2 minutes including the printout. I think AutoZone and Napa also does it.

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2003 suzuki aerio Fuel and Emissions. Part Types. Categories. Close [X]. Replacement Parts. Fuel and Emissions. Fuel Caps · Gaskets and Seals · PCV Valves ...

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Low prices on Gas Cap for your Suzuki Aerio at Advance Auto Parts. Find aftermarket and OEM parts online or at a local store near you.

OE Replacement for 2002-2003 Suzuki Aerio Fuel Tank Cap ...

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Arrives by Thu, Feb 3 Buy OE Replacement for 2002-2003 Suzuki Aerio Fuel Tank Cap (GS / S / SX) at Walmart.com.

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Pull the fault codes in the ECM to see what is causing the problem, It WILL be found in the error code. Does the engine do this when driving down the highway or only when moving slowly or stopped.? An 'oxygen sensor malfunction will NOT cause the engine to stop. Next place to look is the crankshaft position sensor.

It could be a number of things--from a failing fuel pump to a failing ignition component, PULL the FAULT CODE. Don't guess.

The Fuel Filter is inside the Fuel Tank mounted on the pump at the bottom of the Stalk that holds the Fuel Level Sensor as well. To get to it you must remove the Fuel Tank from the car.

If it cranks it turns over just to clarify.
The plugs may be fuel fouled and not sparking inside the cylinders. Its possible one of the injectors is shorted to ground and making all of the injectors stay open.
I would pull the plugs and see if they are wet or dry, if wet unplug the pump relay and try another set of plugs to dry out the cylinders.
If you can get it started, try putting the pump relay back in.

check for your cam sensor or crank sensor .

sounds like fuel filter pluged or fuel pump going bad

Component location diagrams for most 2003 Suzuki Aerio cars and light trucks sold in the U.S. from 1990+.
Ignition System Components Location Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

TP Sensor

Ignition Coil

ECM

MAF Sensor

CMP Sensor

Electronic Shift Control System Components Location Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

Data Link Connector

Transmission Range Sensor

Throttle Position Sensor

Pressure Control Solenoid Valve

Battery

Instrument Panel For Connector Layout Diagram Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Clutch Switch

Thermistor

Brake Light Switch

Blower Motor Relay

Heater Fan Motor

Instrument Panel Harness Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Wiper Switch

Washer Switch

Data Link Connector

Turn Signal Relay

Radio

Headlight System Location Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Headlight Relay

Headlight

Clearance Light

Headlight Diode

Clearance Light Relay

Fuel System Components Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Fuel Pump Relay

Fuel Tank Pressure Sensor

EVAP Canister

Fuel Tank Pressure Control Valve

Fuel Filler Cap

Floor For Single Unit Parts Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

Wheel Speed Sensor

ABS Control Module

G Sensor

Air Bag Control Module

EVAP Canister Vent Valve

Instrument Panel For Ground Point Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Instrument Panel Ground Points

Engine Compartment For Single Unit Parts Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

Throttle Position Sensor

Horn Relay

Radiator Fan Control Relay

Cruise Control Module

Condenser Fan Relay

Engine Compartment Components Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

MAP Sensor

Knock Sensor

Noise Suppressor

Heated Oxygen Sensor

The fact that your car tries to start tells me that your starter, alternator and battery are all probably good.
If none of your spark plugs are getting spark you probably have faulty spark plug wires, or distributor. Check these two things first. Make sure your wires are securely connected to distributor and plugs. To test them individually, take out the spark plug and leave it in the wire. Turn your car over and check for spark from the plug one cylinder at a time. Do not hold the plug in your hand or you will get a nice shock.

REPLACE FUEL FILTER FIRST.IF IT STILL WONT CRANK.IT COULD BE FUEL PUMP RELAY OR FUEL PUMP.

Check the negative battery cable from the battery connection to the location where this cable bolts to chassis ground. I had a similar problem and it turned to be a corroded negative battery cable which was attached to the metal chassis frame. I went to AutoZone and bought a new cable for about $12 buck and no more problems. The Aerio's are know to have this cable corrode and cause starting problems. Good Luck.