2004 Ski-Doo REV Series Factory Service Manual, Page 214Get this manual

Section 05 2TEC ENGINE MANAGEMENT Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
VALUE ENGINE TYPE 593 SDI AT SEA LEVEL 3.9 ABOVE 1800 (6000 ft) 4.1

Otherwise, replace the CPSIf resistance tests good, reconnect the CPS and disconnect the connector DA on the ECMIf throttle cable has been loosen during the procedure, adjust throttle cableStart engine and make sure it operates normally through its full engine RPM rangeIf fault codes appear, refer to SYSTEM FAULT CODES in the DIAGNOSTIC PROCEDURES section for more information
CRANKSHAFT POSITION SENSOR (CPS)
NOTE: The CPS is the trigger coil used for forward and reverse
R1503motr182A

Using multimeter, recheck resistance value between terminals and 19If resistance value is correct, try new ECMRefer to ECM REPLACEMENT procedures elsewhere in this sectionNOTE: Check if wiring harness shows any signs of scoring prior to replace the ECMIf resistance value is incorrect, repair the connectors or replace the wiring harness between ECM connector and the CPS

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