TM 10-3930-675-20-10012 00-7ELECTRONIC CONTROL UNIT (ECU) INPUT VOLTAGE TROUBLESHOOTING - CONTINUED0012 00Table 4. Error Code 201 - Supply Voltage to Tophandler ECU (791) Failure Troubleshooting Procedures - Continued.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 201 - Supply Voltage toTophandler ECU (791) Failure - Continued10.Check voltage at connectorX186 pin 1 located intophandler junction box.If voltage is present, notify SRAto replace wire (A1861A).Table 5. Error Code 202 - Supply Voltage to Tophandler ECU (791) Failure Troubleshooting Procedures.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 202 - Supply Voltage toTophandler ECU (791) Failure1. Remove tophandler junctionbox cover and ensure thatcircuit breaker 51-F41 is nottripped.Reset circuit breaker as required(WP 0076 00).2. Test relay 315-1 for properoperation (WP 0111 00).Replace relay if shorted (WP0076 00).3. Disconnect ECU (790)connector 1 and check voltageat pin 7and pin 8.If voltage is present, replaceECU (790) (WP 0079 00).4. Test automatic circuit breaker51-F41at tophandler junctionbox (WP 0111 00).Replace circuit breaker ifshorted (WP 0076 00).5. Check voltage at circuitbreaker 51-F41.If voltage is present, notify SRA.6. Check voltage at relay 315-1pin 87.If voltage is present, notify SRAto replace wire (A51J).7. Check voltage at connectorX186 pin 1.If voltage is present, notify SRAto replace wire (A1861A).DIAG TOP LIFT 1(16)SYSTEM POWER 24.00VPOWER RI CAN 24.00VPOWER LE CAN 24.00V10 V REF OUT 10.00V
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