Diesel Engine Troubleshooting

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Author: Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.
C15 Troubleshooting

C15 – Engine Temperature Sensor Open or Short Circuit – Test

Posted on March 21, 2022

System Operation Description: The troubleshooting procedures for the diagnostic codes of each temperature sensor are identical. The temperature sensors are sensors that have two terminals.…

C15 Troubleshooting

C15 – Engine Speed/Timing Sensor Circuit – Test

Posted on March 21, 2022

System Operation Description: Use this procedure under the following situation: • There is an active diagnostic code or an easily repeated diagnostic code that is…

C15 Troubleshooting

C15 – Engine Shutdown Output Circuit – Test

Posted on March 18, 2022

System Operation Description: Use this procedure under the following situation: The Engine Shutdown Output Circuit is suspected of incorrect operation. The following background information is…

C15 Troubleshooting

C15 – Engine Running Output Circuit – Test

Posted on March 18, 2022March 18, 2022

System Operation Description: Use this procedure under the following situation: The engine running output circuit is suspected of incorrect operation. The following background information is…

C15 Troubleshooting

C15 – Engine Pressure Sensor Open or Short Circuit – Test

Posted on March 18, 2022

System Operation Description: The troubleshooting procedures for the diagnostic codes of each pressure sensor are identical. The Engine Control Module (ECM) sends a 5 Volt…

C15 Troubleshooting

C15 – Engine Coolant Diverter Circuit – Test

Posted on March 18, 2022

System Operation Description: During normal operation, coolant is sent to the air intake system in order to cool the intake air. A jacket water aftercooler…

C15 Troubleshooting

C15 – Electrical Connectors – Inspect

Posted on March 18, 2022March 18, 2022

System Operation Description: Most electrical problems are caused by poor connections. The following procedure will assist in detecting problems due to connectors. If a problem…

C15 Troubleshooting

C15 – ECM Memory – Test

Posted on March 18, 2022

System Operation Description: Use this procedure under the following situation: One of the following diagnostic codes is present: • 252-11 Engine Software Incorrect • 253-02…

C15 Troubleshooting

C15 – Eaton Top 2 Transmission Circuit – Test

Posted on March 17, 2022

System Operation Description: Use this procedure under the following situation: The “Transmission Style” parameter is programmed to Eaton Top 2 and one of the following…

C15 Troubleshooting

C15 – Diagnostic Enable Switch Circuit – Test

Posted on March 17, 2022

System Operation Description: Use this procedure under the following situation: The circuit for the diagnostic enable switch is suspected of incorrect operation. Diagnostic Enable Switch…

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