What does no start on crank sensor mean?

P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected. The thing to remember about having a failed crank sensor, is that if you have spark or fuel injector pulses, the crank sensor is OK and not the cause of your No Start Condition.

How does the crank sensor work on a car?

How The Crank Sensor Works. CKP TEST 1: Verifying The Crank Signal. CKP TEST 2: Verifying Power (12 Volts). CKP TEST 3: Verifying Ground. Related Test Articles. Multimeter. TIP 1: To perform the test, you’ll need to manually turn the engine. The best point, to turn the engine with a 1/2 ratchet wrench and a socket, is the crank pulley.

How many times does a crank sensor spark?

One wire delivers power in the form of 12 Volts from the PCM. Another delivers Ground. This Ground is provided inside the PCM, too. As the engine turns, a reluctor wheel on the crankshaft activates the crank sensor into creating its On/Off voltage signal 24 times per crankshaft revolution. Activate the 8 COP coils to spark.

How to test no spark no start test?

No spark from all of the Coil-On-Plug Ignition Coils. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light. P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected.

Can a bad crank position sensor cause a check engine light to come on?

Sometimes the check engine light comes on after the crank position sensor is gone. But other times, it is fairly accurate. So whenever you see the light coupled with any of the problems mentioned earlier, it is probably the sensor. Driving with a bad crank position sensor is potentially dangerous.

How to do crank sensor no start test?

TIP 4: Since this is an on-car test of the crank sensor, DO NOT remove the crank sensor to test it. In the photo you’ll notice it’s out but this is just to make it easier to explain the test to you. The one symptom that’s gonna’ be staring you right in the face is your GM pick up or van or SUV cranking but not starting.

When does the Check Engine light come on?

Check Engine Light Comes On. Another issue of a potential problem with the crankshaft position sensor is an illuminated Check Engine Light. If the computer detects a problem with the crankshaft position sensor’s signal, it will activate the Check Engine Light to alert the driver of the problem.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

How to know if your engine has no spark?

First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.