Detroit Diesel Troubleshooting Diagrams

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Author: sam

Troubleshooting

Series 60 – SPN 723/FMI 8 – CAMSHAFT POSITION SENSOR FAULT

Posted on October 10, 2020 by sam

A typical diagnosis is time out. 77.3.1 Time Out Check Check as follows: 1. Disconnect the MCM 120–pin connector. 2. Measure the resistance between pins…

Troubleshooting

Series 60 – SPN 723/FMI 4 – CAMSHAFT POSITION SENSOR FAULT

Posted on October 10, 2020 by sam

A typical diagnosis is a short to ground. 77.2.1 Short to Ground Check Perform the following step to troubleshoot a short to ground. 1. Disconnect…

Troubleshooting

Series 60 – SPN 723/FMI 3 – CAMSHAFT POSITION SENSOR FAULT

Posted on October 10, 2020 by sam

The diagnostic condition is typically an open circuit. 77.1.1 Open Circuit Check Perform the following steps to troubleshoot an open circuit. 1. Disconnect CMP Sensor…

Troubleshooting

Series 60 – SPN 713 (CPC) – TOP2 LOCKOUT SOLENOID

Posted on October 10, 2020October 10, 2020 by sam

74.1 SPN 713/FMI 3 TOP2 Lockout Solenoid – indicates a short to power on the pin 7 circuit of the CPC #3 connector. For wiring…

Troubleshooting

Series 60 – SPN 704 – TURBO ACTUATOR CONTROL (AUX PWM #10)

Posted on October 10, 2020October 10, 2020 by sam

67.1 SPN 704/FMI 3 This diagnosis is typically a short to power. 67.1.1 Short to Power Check Check as follows: 1. Disconnect the turbo actuator…

Troubleshooting

Series 60 – SPN 651 – INJECTOR #1 NEEDLE VALVE NOT OPERATING NORMALLY

Posted on October 9, 2020October 9, 2020 by sam

59.1 SPN 651/FMI 14 This diagnosis is typically an open circuit, short to ground or short to power. 59.1.1 Open Circuit, Short to Ground or…

Troubleshooting

Series 60 – SPN 647/FMI 5 – SINGLE-SPEED FAN (LOW-SIDE DIGITAL OUTPUT #3) FAULT

Posted on October 9, 2020 by sam

This fault code indicates that there is an open circuit. 58.3.1 Open Circuit Check Check as follows: 1. Check for multiple codes. [a] If SPN…

Troubleshooting

Series 60 – SPN 647/FMI 4 – SINGLE-SPEED FAN (LOW-SIDE DIGITAL OUTPUT #3) FAULT

Posted on October 9, 2020 by sam

This fault code indicates that there is a short to ground. 58.2.1 Short to Ground Check Check as follows: 1. Turn the ignition OFF. 2.…

Troubleshooting

Series 60 – SPN 647/FMI 3 – SINGLE-SPEED FAN (LOW-SIDE DIGITAL OUTPUT #3) FAULT

Posted on October 9, 2020 by sam

This fault code indicates that there is a short to power. 58.1.1 Short to Power Check Check as follows: 1. Turn the ignition OFF. 2.…

Troubleshooting

Series 60 – SPN 641/FMI 31 – SMART REMOTE ACTUATOR 5 (VGT) ABNORMAL OPERATION

Posted on October 9, 2020 by sam

This code typically means a turbo actuator internal error code, problem unknown. 57.6.1 Actuator Check Check as follows: 1. Check for multiple codes. [a] If…

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