Snowmobile Ski Doo REV SERIES (2006 year). Instruction - part 56

Section 05 ENGINE MANAGEMENT (POWER TEK)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)

Slowly and regularly depress the throttle. Ob-
serve the needle movement. It must change
gradually and regularly as you move the throttle.
If the needle “sticks”, bounces, suddenly drops
or if any discrepancy between the throttle move-
ment and the needle movement is noticed, it
indicates a worn TPS that needs to be replaced.

Voltage Test

To gain access to TPS, do the following:

– remove air intake silencer
– loosen carburetor clamps
– install small hose pinchers (P/N 295 000 076)on

inlet and outlet coolant hoses connected to car-
buretor

A33C4XA

1. Install hose pinchers

– disconnect inlet and outlet coolant hoses from

carburetors

NOTE: Keep throttle cable installed to avoid fur-
ther adjustment.

– properly rotate and slightly pull out carburetors

to gain access to TPS.

Connect vehicle communication kit (VCK) and use
B.U.D.S. software.

Validation of Pins 2 and 3

Disconnect TPS connector. A fault code should
appear in B.U.D.S. If so, it confirms pins 2 and 3 of
TPS connector are working. Therefore, continue
with validation of pins 1 and 3 below. If no fault
code appears, do the following.

Disconnect TPS connector.

NOTE: To disconnect TPS connector, firmly press
locking tab on top outer side of connector to re-
lease it.

A33C4YA

1. Firmly squeeze here

Disconnect ECM connector and check continuity
of wires between TPS connector and ECM con-
nector.

A34E0LB

ECM CONNECTOR

TPS CONNECTOR

ECM CONNECTOR

PIN 2

DA-4

PIN 3

DA-1

If wire/connectors does not test good, repair/re-
place wire/connector. Otherwise, try a new ECM.

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Section 05 ENGINE MANAGEMENT (POWER TEK)

Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)

Validation of Pins 1 and 3

Reconnect ECM connector.

Connect a voltmeter between pin 1 and 3 in TPS
connector of wiring harness.

Voltage should be 5 V.

Otherwise, disconnect ECM connector and check
continuity of wires between TPS connector and
ECM connector.

A34E0LB

ECM CONNECTOR

TPS CONNECTOR

ECM CONNECTOR

PIN 1

DA-22

PIN 3

DA-1

If wire/connectors do not test good, repair/replace
wire/connector. Otherwise, try a new ECM.

Perform resistance test to validate the TPS sensor.

Resistance Test

Reconnect the TPS connector.

Disconnect ECM connector.

Unscrew idle speed screw until there is a gap with
the throttle lever stopper.

NOTE: The gap between idle speed screw and
stopper is important to ensure throttle slide is
completely closed to read TPS resistance values.

A33C51A

1. Idle screw
2. Throttle lever stopper

A. Gap required here

Activate throttle lever 2 – 3 times to make sure
throttle slides are fully closed.

Using a multimeter, check resistance values as per
the following table.

ECM

CONNECTOR

THROTTLE

IDLE

POSITION

WIDE OPEN

THROTTLE

POSITION

Resistance

3680 – 5520

480 – 720

4000 – 6000

480 – 720

3680 – 5520

NOTE: The resistance value should change
smoothly and proportionally to the throttle move-
ment. Otherwise, replace TPS.

If resistance values fail, replace TPS.

Since the idle screw was loosened, perform the
Closed Throttle Reset procedure.

Replacement

See above to gain access to TPS.

Loosen two screws retaining the TPS.

Remove TPS.

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Section 05 ENGINE MANAGEMENT (POWER TEK)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)

A33C4WC

CARBURETOR
1. Throttle position sensor (TPS)
2. Screws

Install the new TPS.

Apply Loctite 243 on the TPS retaining screws,
then torque to 3 N•m (27 lbf•in).

Reinstall remaining removed parts.

Proceed with the Closed Throttle Reset. See be-
low.

Closed Throttle Reset (TPS)

Preparation

NOTE: This operation performs a reset of the val-
ues in the ECM.

This reset is very important. The setting of the
TPS will determine the basic parameters for all
fuel and ignition mappings.

NOTE: Reset must be done each time the throttle
position sensor (TPS) is loosened or removed or
carburetor or ECM is replaced. An improperly set
TPS may lead to poor engine performance.

Ensure carburetor synchronization and throttle ca-
ble are properly adjusted prior to performing this
setting. Refer to FUEL SYSTEM.

IMPORTANT: Having enough free-play in throttle
lever is critical to properly set the values in ECM.

Setting Closed Throttle (TPS)

Unscrew idle speed screw until there is a gap with
the throttle lever stopper.

A33C51A

1. Idle screw
2. Throttle lever stopper

A. Gap required here

Activate throttle lever 2 – 3 times to make sure
throttle slides are fully closed.

Connect vehicle communication kit (VCK) and use
B.U.D.S. software.

Push the Reset button in the Setting tab of
B.U.D.S.

A33C59A

If TPS is not within the allowed range while reset-
ting the Closed Throttle, the ECM will generate a
fault code and will not accept the setting.

Perform the wide open throttle verification. In
Monitoring Tab of B.U.D.S., check if throttle
opening is within 95 and 100% when throttle
lever is fully depressed.

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Section 05 ENGINE MANAGEMENT (POWER TEK)

Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)

A33C58A

Adjust throttle cable as required to be within this
value. Ensure that some free-play remains in the
throttle cable at idle position.

As a preliminary setup, tighten idle screw until 4%
appears under Throttle opening in Setting tab of
B.U.D.S.

A33C5AA

Adjusting Idle Speed

Disconnect VCK supply cable clips from battery.

Start engine and bring it to its normal operating
temperature.

Adjust idle speed to 1500 RPM.

If fault code(s) appear, refer to SYSTEM FAULT
CODES in the DIAGNOSTIC PROCEDURES sec-
tion for more information.

AIR TEMPERATURE SENSOR
(ATS)

A33I0IA

1. Air temperature sensor (ATS)

Dynamic Test

Connect vehicle communication kit (VCK) and use
B.U.D.S. software.

Look intake air in Monitoring tab of B.U.D.S. It
should show the ambient temperature. Other-
wise, perform the following test.

A33C5BA

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