TM2361 (24JUN08) 9010-15-11 450DLC Excavator Operation and Tests 062608 PN=281 Diagnostic Information 7 EGR Control System Check Perform EGR Control System Check. See EGR Control System Check. (Group 9010-25.) Is the EGR valve free to open and close properly? YES: Go to Air Intake System Leakage Test. NO: Replace EGR valve and retest. – – –1/1 8 Air Intake System Leakage Test Perform Air Intake System Leakage Test See Air Intake System Leakage Test. (Group 9010-25.). Did the air system check good? YES: Go to Exhaust System Check. NO: Repair or replace parts as necessary and retest. – – –1/1 9 Exhaust System Check Check for crush, breakage, or exhaust leakage in the exhaust pipe.
Is exhaust in good condition? YES: Go to Electrical Interference Check. NO: Repair or replace parts as necessary and retest. – – –1/1 9010 15 11 10 Electrical Interference Check Check the condition of accessory electrical equipment such as radio and lights. Does the engine start when the accessory electrical equipment is powered off? YES: Repair electrical equipment. NO: Go to Injector Check. – – –1/1 11 Injector Check 1. Clear the DTC. For information on how to clear DTC, See Reading Diagnostic Trouble Codes With Tech 2 Diagnostic Scan Tool (9015-20) or See Reading Diagnostic Trouble Codes With Dr. ZX. (9015-20.) 2. Start the engine. 3. Select the Actuator test from the Tech 2 menu. NOTE:
If Tech2 scan tool is not available, See Check and Adjust Fuel Injection Nozzle. (Group 9010-25.) 4. Select the Injection Stop at each injector in the common rail system. 5. Press the OFF soft key to stop the fuel injection in the cylinder one by one, and check the change in engine sound. Is there any cylinder of which engine vibration and engine sound did not change when it is stopped? YES: Replace the injector in the cylinder of which engine sound did not change when it is stopped. NO: Engine Control Module (ECM) Check. – – –1/1