KIT-GASKET 4635540 - Caterpillar

Illustration 1 g02606279
Connections of the transmission oil temperature sensor
Note: THE HARNESS BETWEEN THE ECM AND THE OEM CONNECTOR IS NOT A CATERPILLAR HARNESS. FOR MORE INFORMATION ABOUT THIS HARNESS PLEASE CONTACT THE OEM MANUFACTURER.This diagnostic code is associated with the transmission oil temperature sensor. The FMI 3 means that the ECM has determined that the voltage of the circuit for the sensor is above normal.The possible causes of this diagnostic code are listed below:
The transmission oil temperature is too high.
The signal circuit for the sensor is open.
The signal circuit for the sensor is shorted to a higher voltage.
The sensor has failed.
The power circuit or the ground circuit has failed.
The ECM has failed. An ECM failure is unlikely.Note: Do not connect the sensor to +battery voltage.The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of SPN 177 FMI 3 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.System Response:A warning of a level 1 is generated. Use the default value.Test Step 1. CHECK FOR POWER AT THE SENSOR.
Do not disconnect the harness connector from the sensor.
Turn the key start switch and the disconnect switch to the ON position.
At the back of the harness connector for the sensor, insert a multimeter probe along the voltage supply wire (contact 1).
Measure the voltage from contact 1 to frame ground. Expected Result:The voltage is 5 VDC.Results:
OK - The voltage is 5 VDC. Proceed