How to test a crankshaft position sensor using a multimeter?

Set your digital voltmeter to a low range on the AC voltage scale. Connect your meter leads to the sensor pins. Make sure to keep your meter lead wires away from engine moving parts during this test. Have an assistant crank the engine for a few seconds while you watch the meter’s readout. The sensor should produce a voltage pulsing signal.

What kind of gas does a Cummins ISX12 use?

ISX12 G : 12 Liters, 80,000 lb GVW ISL G : 9 Liters, 66,000 lb GVW Use 100% Natural Gas – Stored as CNG, LNG Spark Ignited, In- line 6 cylinder Wastegate Turbocharger Charge-Air Cooled (CAC) Stoichiometric EGR Combustion Three Way Catalyst Aftertreatment

What should the voltage be on a crankshaft sensor?

Touch the DMM red lead to each of the sensor wires on the harness connector you just unplugged. One of the wires should produce around 1.5 volts; otherwise, the sensor is not receiving a reference voltage, and needs to be fixed. Disable the fuel system by removing the fuel pump fuse or relay.

Is the crank sensor OK with no fuel injector?

Since no leaks were present and pressure was normal, then the fuel pressure regulator is OK. The PCM was indeed trying to activate the injector. This indirectly confirms that the crank sensor is OK, since without a Crank Sensor Signal, the PCM will not activate the fuel injectors.

How can I tell if my crankshaft sensor is bad?

Another sign of a crankshaft position sensor problem is rough idling. While idling at a red light or otherwise stopped, you may notice the engine grinding or vibrating. When this happens, it means the sensor is not monitoring the crankshaft’s position, leading to vibrations that affect overall engine power.

Is the cam sensor the same as the crank sensor?

It expects the cam sensor to send signal pulses in time with the crankshaft sensor so the proper cylinders get spark and fuel at the correct time. Your cam sensor is in the distributor and changing it does not require a relearn as it is a different style sensor than the crank sensor.

What should the CKP sensor read on a crankshaft?

Touch the DMM red lead to the red (power) wire on the harness connector. You may need to check the wiring diagram for your particular model, if the CKP sensor uses wires of different color to identify the ground, power and signal wires. Turn the ignition key to the On position. Your meter should read between 5 and 13 volts.