SPN 111 - FMI 4 (Fault Code 196 - Three Wire Sensor)
SPN 111 - FMI 4 (Fault Code: 196 - Three Wire Sensor)
SPN111 FMI4
CODES:
Fault Code: 196
PID(P), SID(S): P111
SPN: 111
FMI: 4/4
Lamp: AMBER
SRT:
REASON : Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant level circuit.
EFFECT : None on performance.
Circuit Description:
The ECM provides 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.
Conditions for Setting the Fault Codes:
The ECM detects that the coolant level signal voltage is less than 0.5-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 signal circuit in the engine harness, connectors, or sensor
• Signal circuit shorted to ground in the engine harness, connector, or sensor
• Damaged sensor.
Read More:
SPN 111 - FMI 4 (Fault Code 196 - Two Wire Sensor)
SPN 111 - FMI 3 (Fault Code 195 - Three Wire Sensor)
Blog.Teknisi
SPN111 FMI4
 |
| ISB, ISC, and ISL CM2150 - Coolant Level Sensor 1 Circuit |
CODES:
Fault Code: 196
PID(P), SID(S): P111
SPN: 111
FMI: 4/4
Lamp: AMBER
SRT:
REASON : Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant level circuit.
EFFECT : None on performance.
Circuit Description:
The ECM provides 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.
Conditions for Setting the Fault Codes:
The ECM detects that the coolant level signal voltage is less than 0.5-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:
- Verify the ECM calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable fixes to the calibration stored in the ECM. If necessary, calibrate the ECM.
Possible causes of this fault code include:
• Open signal circuit in the engine harness, connectors, or sensor
• Signal circuit shorted to ground in the engine harness, connector, or sensor
• Damaged sensor.
Read More:
SPN 111 - FMI 4 (Fault Code 196 - Two Wire Sensor)
SPN 111 - FMI 3 (Fault Code 195 - Three Wire Sensor)
Blog.Teknisi
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