Question about 2003 Harley Davidson FXD Dyna Super Glide

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How do you check a crankshaft position sensor ?

Ohms ?

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Not ohms testing because it is a hall effect switch/generator, pull it out and see if any metal chips etc on it and clean them off it there is. Otherwise the easiest is to try a known good CKP.

Otherwise if you have one Put an oscilloscope on the sensor leads and spin the engine. You should see a pulse coming from the sensor.

Otherwise The CKP sensor has a B+ power supply, a ground, and a signal circuit.

As the crankshaft rotates, the wheel teeth interrupt a magnetic field produced by a magnet within the sensor. The sensor's internal circuitry detects this and produces a signal which the ECM reads. The ECM uses this signal to accurately measure crankshaft velocity which is a variable used in order to detect misfire, spark and, fueling.

Looking at your service manual find the wire that goes to the B+ Measure from this wire to ground for the DC supply voltage. Measurement should be taken on the sensor side of the connector. Ground connection as well.

On my Dyna this wire is marked BK for Black. Do this test at rest and with the engine spinning. A loose connection could break as the motor shakes.

If you have voltage present with the key on and with the engine spinning move the positive meter lead to the Signal wire. This is marked R for Red on my Dyna. With the engine spinning you should see a voltage signal on that wire.

You should measure the signal at the sensor connector and the ecm to verify it is reaching the brain.

Posted on Nov 15, 2014

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Posted on Jan 02, 2017

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I have a 2003 dodge ram with a 4.7. I am getting code p0335 crankshaft position sensor A.


code p0335 refers to crankshaft position (CKP) sensor --circuit malfunction====causes ---wiring---ckp sensor ---ecm
you have checked the wires from ecm connection to sensor connection and eliminated the wires and connections so that only leaves a problem ECM
try substituting the ECM with a known good unit and see it the code is eliminated

Nov 05, 2016 | Dodge Ram Cars & Trucks

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2001 Dodge Stratus se is there a way to test a crank sensor?


There is but you have the have a meter that will check ohms and hertz. They run about $300 for a cheap one.

May 02, 2016 | Dodge Cars & Trucks

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If a trouble code on a 2000 vw shows speed sensor and the test comes out good what is the problem


engine speed sensor could be faulty.engine speed sensor provides the ECM with a crankshaft position signal.the ECM uses the signal to determine a crankshaft reference point top dead center and calculate engine speed. engine speed sensor like the crankshaft position sensor.if sensor faulty fuel system wont work. a bad engine coolant temperature sensor will cause engine shut off when hot.

Jul 28, 2013 | Cars & Trucks

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Error code 1336


Hi there:
The p1336 code you have relates to the crankshaft position sensor. Here's a brief description:


3_23_2012_8_49_09_pm.gif
You will need to check the connections and grounds going to the crankshaft position sensor. The sensor is bolted to the transmission bellhousing and reads the teeth on the flywheel. If you may have damage to the teeth on the flywheel, this is where the code is coming from. If not, remove the sensor, and ohm it out using an ohmmeter. It should have approximately 166.5 - 203.5 ohms [at 20 degrees C (68 degrees F)].


Hope helps.

Mar 23, 2012 | Cars & Trucks

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P0335 code,05 kia rio, changed crank sensor, did not help?


Did you do a crank relearn ? Could be a wiring issue , control module problem etc... Testing electrical circuit first , video's on youtube , all you would need is a DVOM - digital volt ohm meter . P0335 Kia Crankshaft Position Sensor Circuit c Replacing Crankshaft Position Sensor Code P0335

Jun 05, 2011 | 2005 Kia Rio

1 Answer

Where is the location of crankshaft sensor in VW passat,1995,2,8?


OPERATION
The crankshaft position sensor detects gaps in the sensor ring corresponding to TDC of each cylinder. The sensor uses a permanent magnet, core and coil. The changing gap causes the magnetic field near the sensor to change. This in turn varies the voltage signal to the ECM. The ECM uses the signals for ignition timing and fuel synchronization.
TESTING
Audi A4 2.8L
  1. Disconnect the electrical harness connector.
  2. Switch the DMM to its resistance range and connect it between the CKP sensor connector terminals 1 and 2 , using jumper wires from VW 1594 test kit. The DMM should show approximately 1,000 ohms.
  3. If the specified value is not obtained, replace the crankshaft position sensor.
  4. If the specified value is obtained, connect the DMM between terminal 1 and 3 (GND), then between terminals 2 and 3 (GND). The DMM should show infinite ohms (open).
  5. If the specified value is not obtained, replace the crankshaft position sensor.
  6. If the specified value is obtained, check the wiring for continuity or short between crankshaft position sensor and ECM, using a wiring diagram.
  7. Connect a VAG 1598/19 test box to the ECM harness connector.
  8. Check the CKP sensor shielding for continuity by connecting a DMM between terminal 3 and engine ground (GND). The DMM should show a maximum of 1 ohm.
  9. Check the wiring for continuity between the CKP sensor connector terminal 1 and the test box socket A9 , then between the CKP sensor connector terminal 2 and test box socket A10 . There should be a maximum of 1 ohm.
  10. If the specified values are not obtained, check and eliminate any short or open circuits in the wiring.
  11. If the wiring is OK, replace ECM.

Passat 2.8L
  1. Disconnect the harness connector from the crankshaft position sensor.
  2. Switch the DMM to its ohms range.
  3. Connect the DMM to terminals 1 and 2 of CKP sensor harness, using adaptor leads from VW 1594 adaptor kit.
  4. Resistance between terminals 1 and 2 must be 500-700 ohms.
  5. Connect the DMM to terminals 1 and 2 , then 1 and 3 of the CKP sensor harness, using adaptor leads from VW 1594 adaptor kit.
  6. The resistance must be infinite ohms.

REMOVAL & INSTALLATION
  1. Disconnect the electrical connector from the sensor.
  2. Remove the crankshaft sensor retaining bolt and remove the sensor.
  3. Replace the O-ring and lightly lubricate it with clean engine oil.
Installation is reverse of removal.

---
To remove the sensor:

  • Disconnect the wiring harness.
  • Unbolt the sensor mounting bolt.
If the crankshaft timing sensor or the camshaft reference sensor is removed, follow this procedure when the sensor is replaced:
  • Thoroughly clean the sensor tip and install a new spacer on the sensor tip. New sensors should be supplied with the spacer installed.
fr_24.15.gif

Spacer on crankshaft timing sensor and camshaft position sensor.

  • Install the sensor until the spacer lightly touches the sensor ring, and tighten the sensor mounting bolt 105 in.lb.
---
Look for the sensor on the axis of the crankshaft near either end of the engine.

Good luck on locating this sensor.

Jan 17, 2011 | Volkswagen Passat Cars & Trucks

1 Answer

95 4cyl camry intermittant spark loss thus engine dies and fails to crank for short period, sometimes can be coaxed to crank again after removing negative battery terminal for several minutes and...


Test the crankshatt position sensor. If it tests good, please get back to us.

OPERATION The Crankshaft Position (CKP) sensor provides a signal through the ignition module which the ECM uses as a reference to calculate rpm and crankshaft position.

TESTING The crankshaft sensor should be tested either cold 14-122°F (-10-50°C) or hot at 122-212°F (50-100°C).
  1. Using an ohmmeter, measure the resistance between terminals. Resistance cold should read 1630-2740 ohms and hot; 2060-3225 ohms.
  2. If resistance is not within specification, the sensor may be faulty.
REMOVAL & INSTALLATION See Figure 1

Fig. Fig. 1: The crankshaft position sensor is located to the right of the water pump-1MZ-FE engine
  1. Disconnect the negative battery cable.
  2. Remove the right hand engine under cover.
  3. Remove the right side fender apron seal.
  4. Remove the sensor wiring retaining nuts.
  5. Remove the bolt and disconnect the crankshaft position sensor wiring, then withdraw the sensor.
To install:
  1. Install the sensor and secure with the bolt to 69 inch lbs. (8 Nm).
  2. Attach the engine wiring.
  3. Install the right hand fender apron seal.
  4. Install the right hand engine under cover.
  5. Connect the negative battery cable.
  6. Reset any electrical components such as the radio or clock.

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Jul 02, 2017 | 1995 Toyota Camry

1 Answer

My car got FS engine. it cranks but no spark on plugs.replaced another distributor still got same problem.supply is on connector.


TESTING
  1. Disconnect the crankshaft position sensor wire harness plug.
  2. Connect an ohmmeter to the sensor terminals A and B and measure the resistance. Fig. 1: Crankshaft position sensor connector terminals. Measure the resistance across the A and B terminals 89544g27.gif
    Fig. 2: Measure the air gap between the crankshaft position sensor and the crankshaft pulley 89544g28.gif

  3. The reading should be 520–580 ohms at 68°F (20°C).
  4. If not as specified, replace the sensor.
  5. Measure the air gap of the sensor between the crankshaft pulley and the sensor.
  6. Proper air gap should be 0.040–0.080 in. (1–2 mm).
  7. If not as specified, inspect the crankshaft pulley and/or replace the sensor.
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Aug 02, 2010 | 1993 Mazda 626

2 Answers

How to test a CRANKSHAFT POSITION SENSOR


Unplug sensor connector,using a digital volt ohm meter set on ac volts position.Connect the leads to the two pins in the connector of the crank sensor.Then have a helper crank engine over.You should see ac voltage,if not,then your crank sensor is bad.

Aug 06, 2009 | 1996 Plymouth Grand Voyager

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