Diagnostic Information Engine Cranks But Will Not Start JC89288,000005C –19–29APR06–1/1 TM2361 (24JUN08) 9010-15-2 450DLC Excavator Operation and Tests 062608 PN=272 Engine Cranks But Will Not Start Diagnostic Procedure NOTE: When the engine is running at low speed (below 60 rpm), the crank sensor Diagnostic Trouble Code (DTC) may not be detected. If problem is intermittent; raise engine speed to fast idle and check for DTCs related to crank sensor. 9010 15 2 – – –1/1 1 Preliminary Check 1. Check fuel quantity and quality. 2. Check intake and exhaust systems for leaks or obstructions. 3. Check electrical connections. 4. Check battery for proper voltage. Was the problem found? YES:
Repair or replace parts as necessary and retest. NO: Go to Active DTC Check. – – –1/1 2 Active DTC Test To access active DTCs see the following: See Reading Diagnostic Trouble Codes With Monitor Display. (Group 9015-20.) See Reading Diagnostic Trouble Codes With Tech 2 Diagnostic Scan Tool. (Group 9015-20.) Are one of the following DTCs detected? P0335, P0336, P0340, P0341, P0601, P1261, and P1262. YES: See Engine Diagnostic Trouble Codes (DTCs—SPN.FMI Format) for information on code (Group 9001-20.) NO: No active DTCs present. Go to Crank Speed Check.
– – –1/1 3 Crank Speed Check Check to see if the crank speed is more then the necessary speed for the Engine Control Module (ECM) to identify engine rotation. Is the crank speed more than 60 rpm? NO: Go to Starting System Check. (Group 9010-15.) YES: Continue Check. Check to see if crank speed is more than the necessary speed to start the engine (first combustion). Is the crank speed above 80 rpm? See Service ADVISORDiagnostic Application. (Group 9015-20.) YES: Go to Fuel System Test. (Group 9010-15.) NO: Go to Starting System Check. – – –1/1