Diagnostic Information Engine Does Not Develop Full Power JC89288,000005E –19–21APR06–1/1 Engine Does Not Develop Full Power Diagnostic Procedure –1/1 TM2361 (24JUN08) 9010-15-9 450DLC Excavator Operation and Tests 062608 PN=279 1 Preliminary Check Before using this diagnostic procedure, check the following that could cause or be mistaken as low power: 1. Ensure fuel quantity and quality are OK. 2. Check for plugged air or fuel filters. 3. Check for transmission problems. 4. Check for engine mechanical problems. 5. Check for excessive load on the engine. Was the problem found? YES: Repair or replace parts as necessary and retest. NO: Go to Active DTC Check.
– – –1/1 9010 15 9 2 Active DTC Check Perform the Active DTC Check to read Diagnostic Trouble Codes (DTCs). See Reading Diagnostic Trouble Codes With Tech 2 Diagnostic Scan Tool. (Group 9015-20.) Are any DTCs detected? YES: See Engine Diagnostic Trouble Codes (DTCs—SPN.FMI Format) for information on code. (Group 9001-20.) NO: No active DTCs present. Go to Engine Coolant Temperature Check. – – –1/1 3 Engine Coolant Temperature Check 1. Make sure that the engine coolant temperature does not exceed 108°C (226°F). 2. Examine and repair the cause of overheating. 3. Lower engine coolant temperature. Make sure ECM has returned the engine back to normal output. Was engine overheating? YES:
Repair or replace parts as necessary and retest. NO: Go to Barometric Pressure Sensor Check. – – –1/1