The Crank Speed Sensor is an inductive sensor that will generate a variable voltage signal when the sensor’s magnetic field is excited. When the engine is running the flywheel’s teeth rotate past the sensor’s tip and voltage pulses are generated. The Engine Control Module (ECM) monitors the frequency of the signal generated by the Crank Speed Sensor and calculates the engine RPM.
Conditions for diagnostic trouble code (DTC):
1) Incorrect crankshaft position (CKP) sensor signal
Observable symptoms
1) Long start time
2) Uneven operation
3) Loss of power
4) Malfunction indicator lamp (MIL) illuminated
Probable cause
1) Flywheel sensor
2) Wiring harness
3) Flywheel
4) Electrical interference in the crankshaft position (CKP) sensor signal
-
JPRO 2022 v1 Commercial Vehicle Diagnostics V1 Software Download & Installation Service ( 1 PC )
JPRO $94.00Rated 0 out of 5
Related products
-
Allison 1000 & 2000 Gen 5 Fault Code:P2723 Pressure Control Solenoid 1 (PCS1) – Stuck Off
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0974 Shift Solenoid 1 (SS1) Control Circuit – High
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2727 Pressure Control Solenoid 1 (PCS1) Control Circuit – Open
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P1891 Throttle Position Sensor (TPS) PWM Signal – Low Input
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2724 Pressure Control Solenoid 1 (PCS1) – Stuck On
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0979 Shift Solenoid 3 (SS3) Control Circuit – Low
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2730 Pressure Control Solenoid 1 (PCS1) Control Circuit – High
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P1892 Throttle Position Sensor (TPS) PWM Signal – High Input
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0973 Shift Solenoid 1 (SS1) Control Circuit – Low
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2761 TCC PCS Control Circuit Open
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P097C Shift Solenoid 3 (SS3) Control Circuit – Open
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2729 Pressure Control Solenoid 1 (PCS1) Control Circuit – Low
1000 & 2000 Gen 5Rated 0 out of 5
-
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3871 FMI 3 (CPC) Transmission Speed Sensor 4 04 or 3 13 Circuit Failed High
DD13 GHG14 (2014-16)Rated 0 out of 5 -
Volvo All Engines (2013 Emissions) Fault Code: U300045 PID: ACM Electronic Control Unit
All Engines (2013 Emissions)Rated 0 out of 5 -
Volvo All Engines (2017 Emissions) Fault Code: P040392 PID: EMS EGR “A” Control
All Engines (2017 Emissions)Rated 0 out of 5 -
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3251 FMI 21 (ACM) Diesel Oxidation Catalyst Inlet/Outlet Pressure – Not Plausible
DD16 GHG14 (2014-16)Rated 0 out of 5 -
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 3471 FMI 3 (MCM) Hydrocarbon Electronic Dosing Valve Circuit Failed High
DD13 EPA10 (2010-13)Rated 0 out of 5 -
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3246 FMI 8 (ACM) Diesel Particulate Filter Outlet Temperature – Signal Spike
DD16 GHG14 (2014-16)Rated 0 out of 5