|
Coolant Level Sensor Circuit
|
Overview
| CODE | REASON | EFFECT |
| Fault Code: 422 PID: P111 SPN: 111 FMI: 2/2 LAMP: Yellow SRT: |
Voltage detected simultaneously on both the coolant level high and low signal circuits or no voltage detected on both circuits. |
No engine protection for coolant level. |
 Coolant Level Sensor Circuit
|
Circuit Description
The coolant level sensor monitors the coolant level within the coolant system and passes information to the electronic control module (ECM) through the sensor harness. This sensor is very complex. Do not use a multimeter to check the coolant level sensor. If the radiator coolant level drops below a certain level, a power derate will occur and become greater as time goes by.
Component Location
The coolant level sensor is located in the radiator top tank or surge tank.
Shop Talk
Possible causes for this fault code include:
- Open circuit
- Short circuit to ground
- Short circuit to another wire.
Refer to Troubleshooting Fault Code t05-422.
Last Modified: 26-Oct-2010
;){kind=link}
;){kind=link}