HARNESS AS-CAB 5026415 - Caterpillar

Illustration 1 g01444611
Schematic of the temperature sensor (transmission oil) This diagnostic code is associated with the temperature sensor (transmission oil). The FMI 08 means that the ECM has determined that the signal frequency or the signal pulse width is not within the expected range. The possible causes of this diagnostic code are listed below:
The sensor has failed.
Intermittent connections or poor connections
Mechanical devices are loose.
The ECM has failed. This is unlikely.Note: 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 CID 0177 FMI 08 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure. Test Step 1. CHECK FOR POWER AT THE SENSOR.
Do not disconnect the harness connector from the sensor.
At the back of the harness connector for the sensor, insert a 7X-1710 Multimeter Probe along the voltage supply wire (contact C).
Turn the key start switch and the disconnect switch to the ON position.
Measure the voltage from contact C to frame ground.Expected Result:The voltage is 8 VDC.Results:
OK - The voltage is 8 VDC. Proceed to Test Step 3.
NOT OK - The voltage is not 8 VDC. The circuit is open. Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK THE SIGNAL CIRCUIT OF THE SENSOR.
Turn the key start switch and the disconnect switch to the OFF position.
At the back of the harness connector for the sensor, remove the 7X-1710 Multimeter Probe from contact C and insert the probe along the signal wire (contact A).
At the back of the harness connector for the sensor, insert the 7X-1710 Multimeter Probe along the ground wire (contact B).
Turn the disconnect switch and the key start switch to the ON position.
Monitor the signal of the sensor with the 146-4080 Digital Multimeter .
Without disconnecting the sensor or the hardware that is associated with the sensor from the machine, take the sensor through the full operating