QSK CM2358 Fault Code 115 Engine Magnetic Speed/Position Lost Both of Two Signals – Data Erratic, Intermittent, or Incorrect.At least one of the engine control modules has lost the camshaft and crankshaft position sensor signals.The engine will shut down or will not start.
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Circuit Description
The crankshaft position and camshaft position sensors are Hall effect type sensors. The engine control module (ECM) provides a 5 volt supply to the position sensor and a return circuit. As the teeth on the crankshaft speed ring or the dimples in the back of the camshaft gear move past the position sensor, a signal is generated on the position sensor signal circuit. The ECM interprets this signal and converts it to an engine speed. A missing tooth on the crankshaft gear is used by the ECM to determine the position of the engine.
Component Location
The camshaft position sensor is located in the gear cover.
The crankshaft position sensor is located on the left bank side of the engine in the flywheel housing.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the engine is running.
Conditions for Setting the Fault Codes
At least one engine control module (ECM) has lost both the camshaft and crankshaft position sensor signals while another ECM is still detecting both signals.
Action Taken When the Fault Code is Active
The ECM illuminates the red STOP ENGINE lamp immediately after the diagnostic runs and fails.
Conditions for Clearing the Fault Code
To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
The fault code status displayed by the recommended electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.
The ECM will turn off the red STOP ENGINE lamp immediately after the diagnostic runs and passes.
The “Reset All Faults” command in the recommended electronic service tool or equivalent can be used to clear active and inactive faults.
Shop Talk
Possible causes of this fault code include:
Open in both engine position sensor circuits to one ECM.
More repair case for QSK60 CM2358,please refer to QSK60 CM2358 Trouble Repair