Sea-doo GTX Limited iS 255 2009, Shop Manual

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Section 04 FUEL SYSTEM
Subsection 02 (ELECTRONIC FUEL INJECTION (EFI))
Remove rear ventilation box. Refer to
AIR INTAKE
SYSTEM
.
Remove deck extension. Refer to
BODY
.
Disconnect CTS connector and remove CTS.
Install the new CTS and torque to 18 N•m
(159 lbf•
in ).
Reinstall remaining removed parts.
MANIFOLD ABSOLUTE
PRESSURE SENSOR (MAPS)
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TYPICAL
1. Manifold absolute pressure sensor (MAPS)
NOTE: This sensor is a dual function device.
When engine is started and it runs at idle speed,
the sensor takes the atmospheric pressure and
stores it in the ECM. Thereafter, it takes the man-
ifold absolute pressure at operating RPMs.
Ensure sensor is correctly installed on intake man-
ifold. Otherwise, the MAPS could generate a fault
code for an unexpected sensor range at idle when
it reads the atmospheric pressure. Remove sen-
sor and check for oil or dirt on its end and if prob-
lem persists, check throttle plate condition/posi-
tion and the wiring harness. Perform the follow-
ing tests.
MAPS Voltage Test
To gain access to the MAPS, remove the required
parts as described in
CTS REPLACEMENT.
Disconnect connector from MAPS.
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1. Disconnect
Install the D.E.S.S. key on its post.
Briefly press the START button to wake up the
ECM.
Use the
FLUKE 115 MULTIMETER (P/N 529 035 868)
and select Vdc.
Read voltage as per this table.
CONNECTION VOLTAGE
Terminal 1 with battery ground Approx. 5 V
Terminal 2 with battery ground Approx. 0 V
Terminal 3 with battery ground Approx. 0 V
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If voltage test is good, replace the MAPS.
If voltage test is not good, check the continuity of
the MAPS circuit.
MAPS Resistance Test
Disconnect the ECM connector A on the ECM.
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