Table 3. Error Code 120 - Brake System Pressure, Circuit 2 Failure Troubleshooting Procedures

Error Code 119 - Brake System Pressure, Circuit 1 Failure - Cont

BRAKE SYSTEM TROUBLESHOOTING - CONTINUED

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 0031 00-4 BRAKE SYSTEM TROUBLESHOOTING - CONTINUED 0031 00 Table 3. Error Code 120 - Brake System Pressure, Circuit 2 Failure Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 120 - Brake System Pressure, Circuit 2 Failure - Continued 6. Remove cab circuit breaker panel cover, open electrical panel, and locate connector X26. 7. Remove servo ECU (790) cover from operator’s seat base and slide ECU mounting tray out (WP 0079 00). 8. Disconnect servo ECU (790) connector 1. Ensure that brake pressure is present. 9. Perform voltage checks at the following pins: a. X26 pin 6 b. X18 pin 1 c. brake pressure switch 204- 1 pin 1 d. brake pressure switch 204- 1 pin 4 e. X18 pin 2 f. X29 pin 5 g. X150 pin 9 h. servo ECU (790) connector 1 pin 40 a. When voltage is no longer present, inspect wire between pin where voltage stops and previous pin and replace or repair connectors (WP 0111 00). b. Replace ECU (790) (WP 0079 00). c. If wiring harness must be replaced, notify SRA.

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