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*ENGINE CRANKS BUT WILL NOT START For a complete wiring diagram Refer to Section 8W Possible Causes INTAKE SYSTEM RESTRICTION ECM CODES PRESENT ECT SENSOR ENGINE CONTROL MODULE ENGINE DRIVE CHAIN/BELT FUEL SUPPLY CONTAMINATION SUPPLY SIDE FUEL SYSTEM PRESSURE FUEL SYSTEM RESTRICTION GLOW PLUGS SKREEM CODES PRESENT Diagnostic Test 1. ECM CODES PRESENT NOTE: The ECM must have proper power and ground connections for the following tests to be valid. Refer With the scan tool, read the ECM DTCs. Does the scan tool display any ECM DTCs? Yes >> Refer to symptom list for problems related to ECM DTC. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go To 2 2. SKREEM CODES PRESENT With the scan tool, read the SKREEM DTCs. Does the scan tool display any SKREEM DTCs? Yes >> Refer to symptom list for problems related to SKREEM DTC. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go To 3 3. CHECK FOR INTAKE SYSTEM RESTRICTIONS Turn the ignition off. Ensure vehicle has adequate fuel supply in fuel tank. Inspect all air intake and turbocharger related hoses/tubes and connections. Inspect the air filter for excessive dirt, soiling or other problems that may cause restricted air flow. Were any problems found? Yes >> Repair or replace as necessary. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go to 4 PM ENGINE ELECTRICAL DIAGNOSTICS - DIESEL 9 - 1411 |