Snowmobile Polaris 2006 - 2007 FS / FST. Manual - part 22

4.29

EFI / Ignition Systems

4

Rev. 1 07/2006

Diagnostic Communications Circuit

The diagnostic connector allows a technician to connect the
Digital Wrench diagnostic software to the ECU. The connector
is located underneath the console.

The ECU will go into a diagnostic mode when the diagnostic
software is connected to the system and stay awake for ten

minutes. The key switch must be turned to the “start” position
with the safety slap switch down to re-fresh the ECU data
information and to extend the diagnostic on-time mode.

When connected, the laptop or PC supplies power to the fuse
panel.

Digital Wrench Diagnostic Cable Connection

1.

Verify the safety slap switch is down.

2.

Connect the communication cable, PN PU-47151, to the
four-pin (WHITE) diagnostic connector. The connector is
located under the steering loop bracket in the engine
compartment.

3.

Start the Digital Wrench diagnostic software program.

4.

Verify that the correct snowmobile has been picked (Model
year as well as FS or FST) using the “CHOOSE VEHICLE”
button.

5.

Turn the ignition key to the “START” position and release.
Communications between the ECU and software should
initiate.

NOTE:  The ECU will remain active for approximately
two minutes when the diagnostic cable is connected
to the system. After two minutes, the key will have to
turned to the “START” position momentarily to re-
establish communication and re-fresh the data
stream. To bypass the shut down mode, install the
ignition switch jumper tool, PN PS-48463

Ignition Switch Jumper Tool

1.

Carefully remove the ignition switch harness connector
from the switch.

2.

Verify the safety slap switch is DOWN.

3.

Install the PS-48463 jumper.

NOTE: The ECU will remained powered as long as
the jumper is installed. When finished, always
remember to remove the jumper, and reconnect the
ignition switch connector!

CAUTION

Pulling up on the safety slap switch when the jumper is installed on the ignition 

switch connector will initiate the START command and engage the starter motor.

4.30

EFI / Ignition Systems

Rev. 1 07/2006

Fuel Rail / Intake / Exhaust Cylinder Head 

Components

Posi-Lock Fuel Hose Connectors

To disconnect a Posi-Lock connector from a fitting:

1.

Press the connector tabs inwards, then push the lock out.

2.

Wrap the connector and fitting with a clean shop towel.

To reinstall a Posi-Lock connector:

1.

Slide the Posi-Lock connector onto the fitting past the
flange until an audible “click” is heard.

2.

Engage the tab behind the flange. Carefully pull the
connector to verify it is securely attached.

FUEL RAIL

PRESSURE REGULATOR

FUEL INJECTORS

INTAKE MANIFOLDS

INTAKE PRESSURE SENSOR

INTAKE O RINGS

EXHAUST GASKETS

COOLING SYSTEM AIR BLEED

PLUG

MANIFOLD STUDS

MANIFOLD NUTS

6 Ft.Lbs (9 Nm)

15 Ft.Lbs (20 Nm)

9 Ft.Lbs (12 Nm)

7 Ft.Lbs (10 Nm)

7 Ft.Lbs (10 Nm)

6 Ft.Lbs (9 Nm)

6 Ft.Lbs (9 Nm)

APPLY LOCTITE 243

CAUTION

Failure to properly remove and install a fuel hose may 

cause fuel to leak from the fitting.

4.31

EFI / Ignition Systems

4

Rev. 1 07/2006

2006 Fuel Tank / Fuel Supply

2006 Fuel Pump Supply / Return Fittings

Install the fuel pump supply and return hoses to the correct fuel
tank fittings.

2006 Pump / Sender Specifications

RETURN

SUPPLY

Ω

R

ESISTANCE

P

INS

C

OLOR

F

UNCTION

Full

3.0 +/- 5

A

Red

Pump PWR

Empty

90 +/- 20

B

PUR/WHT

Sender

C

Brown

Ground

4.32

EFI / Ignition Systems

Rev. 1 07/2006

2007 Fuel Tank / Fuel Supply

2007 Fuel Supply / Return Fittings

NOTE: Align pump flange so that the arrow is
between the two alignment lines.

2007 Pump / Sender Specifications

Fuel Pump Replacement (Drop-In Style)

1.

Siphon the fuel out of the fuel tank into a suitable
container.

2.

Remove the console and the seat assembly.

3.

Disconnect the positive (+) battery cable from the battery.

4.

Remove the fasteners securing the fuel tank to the tunnel.

5.

Remove the fuel supply and return hoses from the top of
the tank. Reference the Posi Lock Connector information
in this chapter.

6.

Disconnect the wiring harness, then remove the tank from
the snowmobile. Place in a well-ventilated area.

TPS (PTO SIDE)

REGULATOR HOUSING

RETURN HOSE

FUEL FILTER
(ARROWS POINTS TO THROTTLE BODY)

SUPPLY HOSES

VENT HOSE

FOAM PADS

= T 

PFA Nut Torque

21 Ft.Lb. (28 Nm)

ARROW

ALIGNMENT LINES

SUPPLY FITTING

RETURN FITTING

PFA NUT

Ω

R

ESISTANCE

P

INS

C

OLOR

F

UNCTION

Full

≤

 

8

A

Red

Pump PWR

1/2

40.7 +/-1.5

B

WHT/BLU

Sender

Empty

91.5 +/- 1.5

C

Black

Ground

WARNING

2006 models do not feature the drop-in style fuel pump. 

Do not attempt to remove the fuel pump from a 2006 

model.