Detroit Diesel Troubleshooting Diagrams

Series 60 Defective Magnetic Switch

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To determine if a defective magnetic switch is causing no start: ‪

1. Start engine.
2. Clamp a heavy gage battery jumper cable between the two large studs of the magnetic switch;

Series 60 Defective Magnetic Switch 300x175 Series 60 Defective Magnetic Switch

Basic Cranking Circuit

1. If the engine cranked with the jumper cable in place, the magnetic switch must be replaced; refer to section .
2. If the engine did not crank with the jumper cable in place, check the starter.

Magnetic Switch Replacement

Perform the following steps for magnetic switch replacement: ‪

1. Replace the magnetic switch. Refer to OEM guidelines.
2. Perform verification of magnetic switch replacement;

Test Engine with New Magnetic Switch

Perform the following steps to determine if the magnetic switch replacement resolved the no start condition:

Attempt to start and run the engine.
1. If the engine starts and runs, no further troubleshooting is required. Shut down the engine.
2. If the engine fails to start or run, check the starter;

Summary
Article Name
Series 60 Defective Magnetic Switch
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Description
To determine if a defective magnetic switch is causing no start

Written by sam

February 2nd, 2012 at 3:03 am

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