2004 Skidoo ZX Series Service Manual, Page 323Get this manual
Section 06 ENGINES MANAGEMENT (2-TEC) Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
Otherwise, repair the connectors, replace the wiring harness or the ECM as diagnosed
Removal
Remove air intake silencerDisconnect the wiring harness from all sensors actuatorsDisconnect the connector from the ECMCut all locking tie which are holding the wiring harness in positionRemove complete wiring harness
IMPORTANT: Prior to testing the TPS, ensure that mechanical componentsadjustments are adequate according to THROTTLE BODY in AIR INDUCTION SYSTEM aboveThe ECM may generate several fault codes pertaining to the TPSRefer to SYSTEM FAULT CODES in DIAGNOSTIC PROCEDURES section for more information
Wear Test
While engine is not running, activate throttle and pay attention for smooth operation without physical stops of the cableUsing the vehicle communication kit (VCK) with the B.U.D.Ssoftware, use the Throttle Opening display under MonitoringSlowly and regularly depress the throttleObserve the needle movementIt must change gradually and regularly as you move the throttleIf the needle "sticks", bounces, suddenly drops or if any discrepancy between the throttle movement and the needle movement is noticed, it indicates worn TPS that needs to be replaced