Figure 12-3 Variable Speed Governor Circuit

Figure 12-2 Typical Variable Speed Governor Circuit

Figure 12-4 Variable Speed Governor Circuit

TM-9-2320-302-20 Truck Tractor Yard-Type: 43 500 LB GVW DED 4x2 Army Model M878A1 (Ottawa Model 60) (NSN 2320-01-121-2102) Manual
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12.3 TROUBLESHOOTING FLASH CODE 12 [b] If measured voltage is greater than 0.2 volts, signal wire is shorted to 12/24 volt source. Repair or replace #510/#525 circuit. Refer to section 12.3.8. Figure 12-3 Variable Speed Governor Circuit 12.3.7 Check for Short To check for short, perform the following: 1. Turn ignition OFF. 2. Unplug vehicle 30-pin connector and the VSG connector. 3. Turn ignition ON. 4. Enable VSG. Refer to OEM guidelines. 5. Measure resistance between A3 (#916) and D1 (#510). See Figure 12-4. [a] If resistance is greater than 5 , check ECM connector. Refer to section 12.3.8. All information subject to change without notice. 12-8 6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION

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