Electronic Management; Mpem Replacement; Throttle Position Sensor (Tps) - Sea-doo RX Shop Manual

ELECTRONIC MANAGEMENT

MPEM REPLACEMENT

General
Prior to replacing a suspected MPEM, ensure that
all the recommendations in the general introduc-
tion of this section have been followed.
When MPEM is replaced, the safety lanyard(s),
the TPS closed position and the TDC setting must
be reprogrammed/reset. Refer to their specific
section for adjustment.
To allow transferring the previous recorded infor-
mation from the old MPEM to the new one, use
the vehicle communication kit (VCK) with the
B.U.D.S. software. Use Replace in the MPEM
menu. Follows instructions in its help system.
NOTE: If the old MPEM is working, it must be read
inside B.U.D.S. prior to removing it from the vehicle.
Replacement
Disconnect battery cables.
WARNING
Battery BLACK negative cable must always
be disconnected first and connected last.
Disconnect AMP connectors from MPEM.
Remove MPEM.
Install the new MPEM to the vehicle.
Reconnect AMP connectors to MPEM then bat-
tery cables.
Transfer the data from the previous MPEM to the
new one using B.U.D.S. then proceed with the re-
quired programming.
THROTTLE POSITION SENSOR
(TPS)
General
The throttle position sensor (TPS) is a potentiom-
eter that sends a signal to the MPEM which is pro-
portional to the throttle shaft angle. On the DI sys-
tem, two sensors are used for redundancy purposes.
The MPEM compares the signals from both sensors
and determines if there is an error and uses the most
appropriate sensor to operate the system.
SMR2000-051-05-03A.FM
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
www.SeaDooManuals.net
Section 05 ENGINE MANAGEMENT (DI)

1. Throttle position sensor (TPS)

IMPORTANT: Prior to testing the TPS, ensure
that mechanical components/adjustments are ad-
equate according to Throttle Body in Air Induc-
tion System above.
The MPEM may generate two types of fault codes
pertaining to the TPS. Refer to DI 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 physi-
cal stops of the cable.
Using the vehicle communication kit (VCK) with
the B.U.D.S. software, use the Throttle Opening
display under Monitoring.
Slowly and regularly depress the throttle. Observe
the needle movement. It must change gradually
and regularly as you move the throttle. If the nee-
dle "sticks", bounces, suddenly drops or if any dis-
crepancy between the throttle movement and the
needle movement is noticed, it indicates a worn
TPS that needs to be replaced.
NOTE: In this particular case, by comparing the
signals from both sensors, the MPEM will gener-
ate a fault code when the TPS is malfunctioning
due to specific "spots".
To isolate the faulty TPS, disconnect one and test
the other.
05-03-19