TM 9-2320-302-20 0006 00-2 Table 1. Engine Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 2. Engine Does Not Crank - Continued. 5.  Connect Diagnostic Data Reader   (DDR)   to   Diagnostic Data Link (DDL) connector. Perform DDEC system diagnostic troubleshooting.  Refer  to  section number  that  matches  flash  code logged (WP 0007 00). 3.  Engine Cranks, But Does Not Start. 1.  Check  position  of  fuel  shutoff valve. If closed, open valve (WP 0030 00). 2.  Check fuel lines and hoses for leaks and damage. Tighten  or  replace  fuel  lines  and hoses as necessary (WP 0030 00). 3.  Check  for  clogged  fuel/water separator and clogged secondary fuel filter. Service or replace fuel filters (WP 0031 00). 4.  Confirm fuel system is primed. Using fuel/water separator primer pump, prime system (TM 9-2320- 302-10). 5.  Check for clogged or restricted air cleaner element. Service air cleaner (WP 0036 00). 6.  With  ignition  ON  and  engine OFF, press Check Engine Button     and     observe     Check Engine Light (CEL). a. If CEL comes on and stays on, perform step 7 and read Active Flash Codes. b. If CEL comes on for up to five seconds and then turns off, perform step 7 and read Inactive Flash Codes. c. If   CEL   comes   on,   but   is erratic or intermittent, refer to DDEC system fault code 10.4 (WP 0007 00). 7.  Connect Diagnostic Data Reader   (DDR)   to   Diagnostic Data Link (DDL) connector. Perform DDEC system troubleshooting.  Refer  to  section number  that  matches  flash  code logged (WP 0007 00). 4.  Engine Stops, But Is Not Seized. 1.  Check  for  clogged  fuel/water separator and clogged secondary fuel filter. Service or replace fuel filters (WP 0031 00). 2.  Check fuel lines and hoses for leaks and damage. Tighten  or  replace  fuel  lines  and hoses as necessary (WP 0030 00). 3.  With  ignition  ON  and  engine OFF, press Check Engine Button     and     observe     Check Engine Light (CEL). a. If CEL comes on and stays on, perform step 4 and read Active Flash Codes. b. If CEL comes on for up to five seconds and then turns off, perform step 4 and read Inactive Flash Codes.