Hyundai Tech Tip: No Spark, No Injector Pulse on 2002 Sonata 2.4 L Models – UnderhoodService

Hyundai Tech Tip: No Spark, No Injector Pulse on 2002 Sonata 2.4 L Models

You may get a customer complaint that the vehicle died while in Drive, then wouldn't start. There is no spark and no injector pulse, and no engine rpm on the scanner while cranking, and it's setting a Crankshaft Position (CKP) sensor code P0335.

CKP sensor failure is common. The Identifix Hotline has had some cases of the timing belt shredding, affecting or damaging the CKP sensor.

Tests/Procedures:

1. Verify the battery voltage to the CKP sensor on the pink wire.

2. Verify that the ground for the CKP sensor is good on the black wire — look for 0.05 volts or less.

3. Scope the CKP sensor on the yellow wire for a consistent 0-5 volt square wave signal.

4. Check for a possible timing belt shredding, affecting the CKP sensor.

Courtesy of Identifix, Inc.

You May Also Like

It’s Got Spark!

Why can’t you trust some spark tests?

You have probably seen some reality TV shows where the “builder” will pull a spark plug wire to confirm they have spark. This is one of the most misleading tests for the ignition system. If the spark plug produces a spark, the spark is at 14.6 psi (normal air pressure at sea level), not 170 psi or more inside the cylinder during the top of the power stroke.

Why Alternators Are Subject To Ripple Voltage

The alternator produces an AC current that must be converted into DC current by way of a rectifier.

ECM Damage

Engineers have devised two strategies that can be called the “immune system” for the electrical system.

Voltage Drop Testing

The measurement of voltage is like the speed of the traffic.

Spark Plug Fouling

Understanding why spark plugs get dirty.

Other Posts

Forcing OBD II Vehicle Emission Monitors

Some vehicles have readiness issues when it comes to setting all the OBD II monitors.

Auxiliary Water Pump Diagnostics

A car or truck comes into your shop with a complaint of poor heater performance- the issue may be the auxiliary water pump.

GM No Crank After Auto-Stop Event

These concerns could be caused by a broken or loose engine ground cable/strap, which grounds the engine to the body.

Hybrid Vehicle Fluid Maintenance

There are opportunities your shop can’t pass up just because the car or SUV has a hybrid badge on the back.