Ski-Doo REV Series Shop Manual

Section052–TEC ENGINE MANAGEMENT
Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
Install the tether cord cap, turn OFF engine cut-out
switch and push START/RER button momentarily
to activate the ECM.
Disconnect plug connector from APS and connect
avoltmeterbetweenpin1and2ofwiringharness.
Voltageshouldbe5V.
Check the continuity between pin 3 on APS con-
nector and pin 18 on ECM connector.
If tests are good, replace the APS.
If tests are not good, continue to check the conti-
nuity of the rest of the APS circuit on the harness.
Disconnect the connector A from the ECM.
Using a multimeter, check continuity of circuits as
per following table.
CIRCUIT NUMBER
(ECM CONNECTOR DA)
APS CONNECTOR
DA-3 PIN 1
DA-4 PIN 2
DA-18 PIN 3
If wiring harness is good, try a new ECM. Refer
to ECM REPLACEMENT procedures elsewhere in
this section.
NOTE: Check if wiring harness shows any signs
of scoring prior to replace the ECM.
Otherwise, repair the connectors or replace the
wiring harness between ECM connector and the
APS.
Replacement
Disconnect APS connector and remove the APS.
The ATS is retained with a screw.
Install the new APS.
EXHAUST GAS TEMPERATURE
SENSOR (EGTS)
A33I0JA
2 1
1. Muffler
2. Exhaust gas temperature sensor (EGTS)
Resistance Test
Disconnect the plug connector from the EGTS and
check sensor resistance.
Refer to TEMPERATURE SENSOR TABLE at the
beginning of this section to find the corresponding
resistance value for this sensor temperature.
If out of specification, replace the sensor.
If resistance tests good, reconnect the EGTS and
disconnect the connector DA on the ECM.
Using a multimeter, recheck resistance value be-
tween terminals 10 and 26.
If resistance value is correct, try a new ECM. Refer
to ECM REPLACEMENT procedures elsewhere in
this section.
NOTE: Check if wiring harness shows any signs
of scoring prior to replace the ECM.
If resistance value is incorrect, repair the connec-
tor or replace the wiring harness between ECM
connector and the EGTS.
Replacement
Disconnect EGTS connector and remove EGTS.
Apply anti-seize lubricant (P/N 293 800 070) over
EGTS threads to prevent possible seizure.
Torque the new EGTS to 45 N•m(33lbf•ft).
Replug connector.
mmr2004-Rev 195

Ski-Doo REV Series Specifications

General

Chassis	REV
Track Width	15 in
Fuel Capacity	10.6 gal
Seating Capacity	1
Reverse	Available on most models
Electric Start	Available on most models