QSK60 CM2358 Engine Camshaft Speed/Position Sensor Data Erratic Incorrect

This illustration show you guide on how to repair Cummings QSK60 CM2358 engine camshaft speed/position sensor – data erratic,intermittent, or incorrect.

 

Code:

Fault Code: 1376
PID: S64
SPN: 723
FMI: 2/2
LAMP: Maintenance
SRT:

 

Related Contents:

2024.10 INSITE 9.0.1 Engine Diagnostic Software

Cummings INLINE 6 Diagnostic Adapter

 

 

Reason:

The ECM has detected a loss of signal from the camshaft position sensor.

 

Effect:

Possible reduced engine performance.

 

Circuit Description

The engine control module (ECM) provides a 5 volt supply to the engine camshaft speed/position sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The camshaft speed/position sensor provides a signal to the ECM on the camshaft speed/position sensor signal circuit. This sensor generates a signal to the ECM as the camshaft speed indicator lobe moves past the sensor. The ECM interprets this signal into an engine speed reading and determines engine position. This sensor is used as a backup sensor if the primary engine crankshaft speed/position signal is lost.

 

Component Location

The camshaft position sensor is located in the gear cover.

 

Conditions for Running the Diagnostics

This diagnostic runs continuously when the engine is running.

 

Conditions for Setting the Fault Codes

The Engine Control Module (ECM) detected a loss of the camshaft speed/position sensor while the engine was running.

 

Action Taken When the Fault Code is Active

The ECM illuminates the white MAINTENANCE lamp or flashes the amber CHECK ENGINE lamp, indicating a maintenance condition, immediately after the diagnostic runs and fails.

Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.

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 flashing amber CHECK ENGINE lamp / MAINTENANCE 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

Each ECM has an individual source address that displays when he recommended electronic service tool or equivalent is connected. When troubleshooting a fault code, use the source address displayed in he recommended electronic service tool or equivalent to determine which ECM and circuit is affected.

Possible causes of this fault code include:

Open or short circuit of the +5-VDC supply, signal, or return wire in the engine harness

Damaged or malfunctioning camshaft position sensor.

Damaged speed indicator lobe.

Sensor air gap that is marginally too small or too large.

 

More repair case for QSK60 CM2358,please refer to QSK60 CM2358 Trouble Repair