PID 105, FMI 0, Flash Code 44, Intake Manifold Temperature High
The intake manifold temperature is high due to a faulty Air Temperature Sensor.
Troubleshooting PID 105, FMI 0, FLASH CODE 44
Troubleshoot as follows:
- Check the Air Temperature Sensor (ATS) to determine if it is faulty using the DDEC Sensor Tester J 37164 (see Figure
"DDEC Sensor Tester J 37164"
Figure 1. DDEC Sensor Tester J 37164
- Disconnect the sensor. The ATS is mounted to the bottom of the inlet elbow (see Figure
"Location of Air Temperature Sensor"
Figure 2. Location of Air Temperature Sensor
- Disengage locking tang on two-wire connector.
- Grasp body of the connector and gently pull it from the socket.
- Use the appropriate wrench on the hex portion of the sensor and unscrew it from inlet elbow.
- Clip the power leads to the 12 volt power source.
- Connect the sensor to the tester at the correct connector
- Plug in a volt OHM meter. The tester will power up the sensor. Check the values to see if the sensor is operating properly.
- If the ATS is faulty, refer to "184.108.40.206 Replacing the Air Temperature Sensor" to replace the ATS.
- If the ATS is not faulty, go to step .
- Call Detroit Diesel Technical Service.
Replacing the Air Temperature Sensor
The ATS is installed into the air inlet tube. The ATS is non-serviceable, and is replaced as a unit. No adjustment is required. Remove the faulty sensor and replace as follows:
Overtightening will distort and crack the sensor body, resulting in sensor malfunction. Damage may not be evident until sensor removal, when body may break apart.
- If installing a new ATS, there is no need to use sealer as it is applied during manufacturing. When reinstalling a serviceable ATS, apply Loctite pipe sealant with Teflon, PT-7260, or equivalent on all but first two threads.
- Install ATS into the air inlet tube. Torque to 11-16 N·m (97-142 lb·in.).
Note: Because of its plastic body, the ATS must be hand started and carefully tightened.
- Carefully fasten connector onto sensor and engage locking tang.
- Turn the ignition to the ON position. Check the DDR for any diagnostic code(s).
- If the codes are no longer active, refer to "5.17.2 Verification" .
- If the codes are still active, call Detroit Diesel Technical Service.
Verify troubleshooting as follows:
- Check the DDR to see if PID 105, FMI 0, Flash Code 44 is still active.
- If the code is still active, go to step 2.
- If the code is not active, troubleshooting is complete.
- If the code is still active, call Detroit Diesel Technical Service.
|Series 50G and 60G Troubleshooting Guide - 6SE482|
|Generated on 10-13-2008|