TM 9-2320-360-20-1 WIRE # 451/901 CONTINUITY TEST (1) Turn engine switch to OFF position (TM 9-2320-360-10). (2) Remove vehicle harness connector from ECM. (3) Install jumper wire between sockets C1 and E1 on the vehicle harness connector. (4) Place positive (+) probe of multimeter on pin K of the 12 pin DDL connector. (5) Place negative (-) probe of multimeter on pin M of   the   DDL   connector   and   note   reading   on multimeter. (6) Place positive (+) probe of multimeter  on  pin  A of DDL connector. (7) Place negative (-) probe' of multimeter on known good ground and note reading on multimeter. (1) Remove jumper wire from between pins A and M of the DDL connector. (2) Attempt to start and run the engine (TM 9-2320-360-10). VERIFY CODE(S) - ENGINE RUNNING (1) Try to get the CHECK ENGINE indicator to come on by warming up the engine and Increasing the engine speed from idle speed to 2100 RPM. (2) Run  engine  for  one  minute  or  until  CHECK  ENGINE indicator comes on. (3) Shut off engine (TM 9-2320-360-10). CAUTION Use  jumper  wire  only  between  terminals indicated.  Failure to comply may result in damage to DDEC components or wiring. NOTE If  CHECK  ENGINE  indicator  came  on,  do steps (4) through (7). (4) Install suitable wire (paper clip) between pins A and M of the 12 pin, DDL connector. (5) Turn ENGINE SWITCH to ON position (TM 9-2320-360-10). (6) Note  operation  of  CHECK  ENGINE  indicator  to  read codes (7) Turn ENGINE SWITCH to OFF position (TM 9-2320-360-10). 2-89 (2-90 blank)