Recommended Procedure

Connect scan tool to Data Link Connector (DLC). Using scan tool, access FUEL PW PID from PID/DATA MONITOR & RECORD menu. Crank engine while monitoring FUEL PW PID reading. If FUEL PW PID reading indicates 1-6 milliseconds, go to GLOW PLUG SYSTEM OPERATION TEST . If FUEL PW PID reading does not indicate 1-6 milliseconds and VPWR, RPM and ICP PID readings are okay, check for Camshaft Position (CMP) sync signal fault. See TEST DF: CAMSHAFT POSITION SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - 7.3L DIESEL article.