SPN 723 - FMI 10 (Fault Code 753)
Monday, July 02, 2018
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SPN723 FMI10
Engine Camshaft Speed/Position Sensor - Abnormal Rate of Change
CODES:
Fault Code: 753
PID(P), SID(S): S64
SPN: 723
FMI: 10/10
Lamp: None
REASON: Engine position signal from the crankshaft position sensor and camshaft position sensor do not match.
EFFECT: Possible reduced engine performance. Engine will misfire or run rough.
Circuit Description:
The engine speed sensor and camshaft position sensor provide an engine speed and position signal to the engine control module (ECM) through the engine harness.
Component Location:
The crankshaft position and camshaft position sensor location varies, depending on engine model.
Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine speed sensor does not match the camshaft position signal input to the ECM.
Action Taken When the Fault Code is Active:
• The ECM illuminates the amber CHECK ENGINE lamp and/or the malfunction indicator lamp (MIL) immediately when 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 Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.
• The ECM will turn off the amber CHECK ENGINE lamp and/or MIL immediately after the diagnostic runs and passes.
• The “Reset All Faults” command in the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults.
Shop Talk:
Possible causes of this fault code include:
Damaged or malfunctioning engine speed sensor
Read More:
SPN 157 - FMI 7 (Fault Code 755)
SPN 1349 - FMI 7 (Fault Code 758)
Blog.Teknisi
Engine Camshaft Speed/Position Sensor - Abnormal Rate of Change
 |
| Engine Speed Sensor Circuit |
CODES:
Fault Code: 753
PID(P), SID(S): S64
SPN: 723
FMI: 10/10
Lamp: None
REASON: Engine position signal from the crankshaft position sensor and camshaft position sensor do not match.
EFFECT: Possible reduced engine performance. Engine will misfire or run rough.
Circuit Description:
The engine speed sensor and camshaft position sensor provide an engine speed and position signal to the engine control module (ECM) through the engine harness.
Component Location:
The crankshaft position and camshaft position sensor location varies, depending on engine model.
Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine speed sensor does not match the camshaft position signal input to the ECM.
Action Taken When the Fault Code is Active:
• The ECM illuminates the amber CHECK ENGINE lamp and/or the malfunction indicator lamp (MIL) immediately when 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 Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.
• The ECM will turn off the amber CHECK ENGINE lamp and/or MIL immediately after the diagnostic runs and passes.
• The “Reset All Faults” command in the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults.
Shop Talk:
Possible causes of this fault code include:
Damaged or malfunctioning engine speed sensor
Read More:
SPN 157 - FMI 7 (Fault Code 755)
SPN 1349 - FMI 7 (Fault Code 758)
Blog.Teknisi
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