SPN 111 - FMI 3 (Fault Code 195 - Three Wire Sensor)
Thursday, August 02, 2018
Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 ISC QSC8.3 ISL ISLe QSL9 CM850 (CM2850)
SPN111 FMI3
Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
CODES:
Fault Code: 195
PID(P), SID(S): P111
SPN: 111
FMI: 3/3
Lamp: Amber
REASON: Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
EFFECT: None on performance.
Circuit Description:
The electronic control module (ECM) supplies a 5 volt supply to the engine coolant level sensor using a common sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The engine coolant level sensor provides a signal to the ECM on the engine coolant level sensor signal circuit. This sensor signal voltage changes based on the coolant level in the expansion tank.
Component Location:
The engine coolant level sensor is typically located in the radiator top tank or surge tank.
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 ECM detects that the coolant level signal voltage is greater than 4.5-VDC for more than 1 second.
Action Taken When the Fault Code is Active:
• The ECM illuminates the amber CHECK ENGINE light immediately when the diagnostic runs and fails.
• No engine protection will be available for low coolant level.
Conditions for Clearing the Fault Code:
The ECM will turn off the amber CHECK ENGINE light immediately after the diagnostic runs and passes.
Shop Talk:
Possible causes of this fault code include:
• Open return circuit in the engine harness, connectors, or sensor
• Signal circuit shorted to sensor supply or battery voltage
• Sensor supply circuit shorted to battery voltage.
Read More:
SPN 110 - FMI 0 (Fault Code 151)
SPN 111 - FMI 3 (Fault Code 195 - Two Wire Sensor)
Blog.Teknisi
Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
 |
| Engine Coolant Level Sensor 1 Circuit |
CODES:
Fault Code: 195
PID(P), SID(S): P111
SPN: 111
FMI: 3/3
Lamp: Amber
REASON: Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
EFFECT: None on performance.
Circuit Description:
The electronic control module (ECM) supplies a 5 volt supply to the engine coolant level sensor using a common sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The engine coolant level sensor provides a signal to the ECM on the engine coolant level sensor signal circuit. This sensor signal voltage changes based on the coolant level in the expansion tank.
Component Location:
The engine coolant level sensor is typically located in the radiator top tank or surge tank.
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 ECM detects that the coolant level signal voltage is greater than 4.5-VDC for more than 1 second.
Action Taken When the Fault Code is Active:
• The ECM illuminates the amber CHECK ENGINE light immediately when the diagnostic runs and fails.
• No engine protection will be available for low coolant level.
Conditions for Clearing the Fault Code:
The ECM will turn off the amber CHECK ENGINE light immediately after the diagnostic runs and passes.
Shop Talk:
Possible causes of this fault code include:
• Open return circuit in the engine harness, connectors, or sensor
• Signal circuit shorted to sensor supply or battery voltage
• Sensor supply circuit shorted to battery voltage.
Read More:
SPN 110 - FMI 0 (Fault Code 151)
SPN 111 - FMI 3 (Fault Code 195 - Two Wire Sensor)
Blog.Teknisi
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