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- #06 freightliner columbia ecu diagnostic codes how to
- #06 freightliner columbia ecu diagnostic codes code
- #06 freightliner columbia ecu diagnostic codes free
What I see all the time are inactive codes in the ABS for J1939 time outs on Freightliner Columbia. When checking the J1939 on pins C and D make sure the ignition is off and no modules are communicating when you check the resistance. When the data link is in good condition the total resistance will be approximately 60 ohms on pins C and D of the 9 pin data link connector. The J1939 data link has two 120 ohm resistors in parallel in the data link. This troubleshooting method will work for all truck makes but I will use a Freightliner Columbia in my example.
#06 freightliner columbia ecu diagnostic codes how to
I will show you how to find the potential problem in the J1939 data link. Most of the time these codes will get erased and minimal or no troubleshooting will be done. Trucks will come into the shops all the time with inactive codes for data links, such as ABS J1939 time outs, communication errors, and Engine ECU’s data link failures. The most common data link used is the high speed J1939. Let me explain: Modern day trucks have multiple data links used by all the electronic modules. What I am going to share with you about J1939 data link diagnostics is from life experience not text book.
#06 freightliner columbia ecu diagnostic codes code
One of the most valuable things I will teach technicians is how to use a calculator to troubleshoot the J1939 in my Advanced Data Link and Fault Code Diagnostics Course. I have to teach everything on the vehicle from bumper to bumper, which could be 3 axle alignments to troubleshooting a data link. Working for a major fleet as a Technician Instructor I have taught many courses. Why I use a calculator to troubleshoot a J1939 data link, yes I said a calculator. Get a quote and book an appointment online or speak to a service advisor at 1-80.J1939 Data Link Troubleshooting with a Calculator YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Most of the time, the throttle is attempted to be cleaned before it is replaced as this is a much cheaper option.
#06 freightliner columbia ecu diagnostic codes free
The carbon buildup can be removed using throttle body cleaners to carefully dissolve the carbon and free up the throttle plate movement.
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The technician will use a multimeter to check for proper voltage at the MAP sensor. Then all codes will be cleared and a test drive performed.Īfter the test drive, a visual inspection will be performed to look for any obvious faults. The freeze frame data found with any codes will also be stored in the ECU and will be noted. These codes may include pending and history codes. Qualified technicians will check for any codes stored in the vehicle's ECU first. How does a mechanic diagnose the P2172 code? Check Engine Light illuminated on the dashboard.Manifold absolute pressure (MAP) sensor failure.The failsafe mode will remain until the code is repaired or normal operation is detected. When the code is set, the ECU will enable a failsafe mode to prevent any further damage. When the code is set, the Check Engine Light will be illuminated on the dashboard. The electronic control unit (ECU) detects this large amount of air and the P2172 diagnostic trouble code (DTC) is set. The P2172 code means that a large amount of airflow was suddenly inducted into the throttle actuator control system. Throttle Actuator Control System - Sudden High Airflow Detected What the P2172 code means