MBE 4000 DDEC VI Troubleshooting – Section 6.2 Defective Magnetic Switch

Section 6.2
Defective Magnetic Switch

Check as follows:‪

ENGINE EXHAUST ‪
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪

1. Start engine.
2. Clamp a heavy gage battery jumper cable between the two large studs of the magnetic switch.
   
   1. If the engine cranked with the jumper cable in place, the magnetic switch must be replaced; go to step 3 .
   2. If the engine did not crank with the jumper cable in place, check the starter; refer to "6.4 Defective Starter" .
3. Replace the magnetic switch. Refer to OEM guidelines.

   ENGINE EXHAUST ‪
   To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪

4. 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 for internal engine damage; refer to "6.3 Internal Engine Damage" .