Table 1. Error Code 649 - Engine Speed Sensor Failure, Open Circuit or Short Circuit to Battery Troubleshooting Procedures

TRANSMISSION SPEED SENSORS TROUBLESHOOTING - TM-10-3930-675-20-1_459

Table 2. Error Code 650 - Engine Speed Sensor Failure, Short Circuit to Chassis Troubleshooting Procedures

TM-10-3930-675-20-1 Rough Terrain Container Handler (RTCH): RT 240; 53 000 Lb Capacity; 4x4 Manual
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TM 10-3930-675-20-1 0027 00-2 TRANSMISSION SPEED SENSORS TROUBLESHOOTING - CONTINUED 0027 00 Table 1. Error Code 649 - Engine Speed Sensor Failure, Open Circuit or Short Circuit to Battery Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 649 - Engine Speed Sensor Failure, Open Circuit or Short Circuit to Battery - Continued 3. Move cab to transport position and remove transmission access covers (WP 0135 00). 4. Check transmission electrical harness connector 761 located on right side of transmission at engine speed sensor for proper connection. Connect loose or disconnected connectors. 5. Check continuity between connector 761 pin 1 and connector X173 pin 4 and between connector 761 pin 2 and connector X173 pin 5. a. If continuity is not present, repair or replace connectors (WP 0111 00). b. If wiring harness must be replaced, notify SRA. 6. Disconnect connector on transmission ECU connector. 7. Check continuity between transmission ECU connector pin 19 and connector X173 pin 4 and between transmission ECU connector pin 3 and connector X173 pin 5. a. If continuity is not present, repair or replace connectors (WP 0111 00). b. If wiring harness must be replaced, notify SRA. 8. If continuity was present in either steps 5 or 7, disconnect transmission speed sensor connector 761 and perform an internal resistance check of engine speed sensor. Resistance should be 1050 +/- 100 ohms. If resistance is not as specified, replace engine speed sensor (WP 0095 00).

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