Section 06
ENGINE MANAGEMENT (DI)
Subsection 03
(COMPONENT INSPECTION AND ADJUSTMENT)
06-03-24
SMR2002-075 _06-03A.FM
CAUTION:
An improperly adjusted TPS may
lead to poor engine performance and emission
compliance could possibly be affected.
Use the vehicle communication kit (VCK) with the
B.U.D.S. software to perform this adjustment.
Ensure the throttle body plate stop lever rest against
its stopper. Open throttle approximately one quarter
then quickly release. Repeat 2 - 3 times to settle
throttle plate. If stopper does not rest against its
stop lever, perform throttle cable adjustment. Refer
to THROTTLE BODY in AIR INDUCTION SYSTEM
above.
Push the
Reset
button in the SETTING section of
B.U.D.S.
NOTE:
There is no idle speed adjustment to per-
form. The MPEM takes care of that. If TPS are not
within the allowed range while resetting the
closed TPS, the MPEM will generate a fault code
and not accept the setting.
Start engine and make sure it operates normally
through its full engine RPM range. If fault codes ap-
pear, refer to DI SYSTEM FAULT CODES in DIAG-
NOSTIC PROCEDURES section for more informa-
tion.
CRANKSHAFT POSITION
SENSOR (CPS)
1. Magneto cover
2. CPS connector
Check for RPM display at the information center
while cranking
engine (first ensure information
center is in tachometer mode). If it displays ap-
proximately 300 RPM, the CPS circuitry is properly
working.
Otherwise, validate the information center is
working by activating the tachometer using the
software B.U.D.S. under
Activation
(first ensure
information center is in tachometer mode). If it
does not display 3000 RPM, the information cen-
ter may be faulty and needs to be tested.
If the information center correctly displayed 3000
RPM, perform the following tests.
NOTE:
Take into account that a CPS fault can be
triggered by bent or missing encoder wheel teeth.
Check the teeth condition. Also, bad connections
in magneto connector could generate electrical
noise that would make you wrongly think the CPS
is faulty. Check pins and wires.
Encoder Wheel Inspection
To check the encoder wheel for bent teeth, pro-
ceed as follows.
Remove magneto cover. Refer to MAGNETO SYS-
TEM in ENGINE section.
Install a dial indicator on crankcase casting. Posi-
tion the gauge on a tooth and set it to zero (0).
Rotate flywheel and check needle movement. The
maximum allowed difference between teeth is
0.15 mm (.006 in). Otherwise, straighten the tooth
or replace the encoder wheel.
1. Encoder wheel
2. Dial indicator
Properly reinstall cover.
The encoder wheel for bent teeth can also be in-
spected by the following alternative method.
Remove magneto cover. Refer to MAGNETO SYS-
TEM in ENGINE section.
2
F12R0OA
1
F12R1HA
2
1
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