ECU YAMAHA VX 2006 Owner's Guide

5-1
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EJU11160
Troubleshooting
If you have any trouble with your watercraft, use this section to check for the possible
cause.
If you cannot find the cause, or if the procedure for replacement or repair is not described
in this Owner’s/Operator’s Manual, have a Yamaha dealer perform the necessary service.
EJU13670
Troubleshooting chart
TBC-F0P7ETROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
startStarter motor does not turn over
Yamaha
Security
System
(VX110
Deluxe)Lock mode selected Select unlock mode
2-15
Engine shut-
off switchClip not in place Install clip
2-9
Fuse Burned out Replace the fuse and
check wiring4-23
Battery Run down Recharge 4-20
Poor terminal connec-
tionsTighten as required
4-20
Terminal corroded Clean 4-5
Starter motor Faulty Have serviced by
Yamaha dealer—
Starter motor turns over
Throttle lever Squeezed Release 2-10
Fuel Empty Refill as soon as possi-
ble3-4
Stale or contaminated Have serviced by
Yamaha dealer4-11
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-11
Spark plug Fouled or defective Clean or replace 4-16
Spark plug cap Not connected or loose Connect properly 4-16
Connected to wrong
cylinderConnect properly
4-16
Fuel injection
systemFuel pump faulty Have serviced by
Yamaha dealer—
E_F1K-70.book Page 1 Thursday, October 20, 2005 1:30 PM

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Engine runs irregu-
larly or stallsFuel Empty Refill as soon as possi-
ble3-4
Stale or contaminated Have serviced by
Yamaha dealer4-11
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-11
Spark plug Fouled or defective Replace 4-16
Incorrect heat range Replace 4-16
Gap incorrect Adjust 4-16
Spark plug cap Loose Connect properly 4-16
Cracked, torn, or dam-
agedReplace
—
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel injection
systemJet nozzle clogged Have serviced by
Yamaha dealer—
Warning light or
indicator blinksFuel level Empty Refill as soon as possi-
ble3-4
Engine over-
heatedJet intake clogged Clean
5-3
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer—
Wate rcr af t slow or
loses powerYamaha
Security
System
(VX110
Deluxe)Low-RPM mode
selectedSelect normal mode
2-15
Cavitation Jet intake clogged Clean 5-3
Impeller damaged or
wornHave serviced by
Yamaha dealer—
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine2-22
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
2-21
Spark plug Fouled or defective Replace 4-16
Incorrect heat range Replace 4-16
Gap incorrect Adjust 4-16
Spark plug
capsLoose Connect properly
4-16
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel Stale or contaminated Have serviced by
Yamaha dealer4-11
Air filter Clogged or oil buildup Have serviced by
Yamaha dealer4-14 TROUBLE POSSIBLE CAUSE REMEDY PAGE
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EJU18450
Connecting the jumper cables
1. Connect the positive (+) jumper cable 1
to the positive (+) terminals of both bat-
teries.
2. Connect one end of the negative (–)
jumper cable 2 to the negative (–) termi-
nal of the booster battery 3.
3. Connect the other end of the negative (–)
cable to an engine hanger 4.
CAUTION:@ Do not connect the end of the jumper
cable to the negative (–) terminal on the
watercraft battery! Be sure all connec-
tions are secure and correct before
attempting to start the engine. Any
wrong connection may damage the elec-
trical system.
@
4. Start the engine, and then disconnect
the cables by reversing the steps above.
CAUTION:@
Never push the start switch while the
engine is running.

Do not operate the start switch for
more than 5 seconds, otherwise the
battery will be discharged and the
engine will not start. Also, the starter
motor may be damaged. If the engine
does not start in 5 seconds, release
the start switch, wait 15 seconds, and
then try again.
@
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Limitations on who may operate the
watercraft .............................................. 1-12
“L-MODE” indicator light
(for VX110 Deluxe)................................ 2-23
Location of main components ................. 2-1
Lubrication............................................... 4-3
Lubrication points .................................. 4-18
M
Maintenance and adjustments ................ 4-7
Manufactured date label.......................... 1-4
Model information (For Europe only)....... 1-3
Multifunction meter ....................... 2-18, 3-14
O
Oil pressure warning indicator............... 2-21
Operating your watercraft...................... 3-20
Operation .............................................. 3-15
Operation of controls and other
functions .................................................. 2-5
Operation requirements ........................ 1-14
Other labels ........................................... 1-10
Owner’s/Operator’s Manual and
tool kit ...................................................... 4-9
P
Periodic maintenance chart................... 4-10
Post-operation checks........................... 3-34
Pre-operation check list........................... 3-5
Pre-operation check points ..................... 3-6
Pre-operation checks .............................. 3-5
Primary Identification (PRI-ID) number ... 1-1
R
Recommended equipment .................... 1-16
Remote control transmitter
(for VX110 Deluxe).................................. 2-7
Replacing the fuses............................... 4-23
Reverse on waterways
(for VX110 Deluxe)................................ 3-33
Riding watercraft with passengers ........ 3-21
Rough water operation .......................... 3-33
S
Safe boating rules ................................. 1-21
Safety information ................................. 1-12
Seat ......................................................... 2-5
“SECURITY” indicator light
(for VX110 Deluxe)................................ 2-23Selecting the normal mode/
low-RPM mode (for VX110 Deluxe) ...... 2-17
Shift lever and reverse gate
(for VX110 Deluxe) ................................ 3-12
Shift lever (for VX110 Deluxe) ............... 2-13
Specifications ........................................ 4-24
Speedometer......................................... 2-19
Starting and boarding in shallow
water ..................................................... 3-23
Starting from a dock .............................. 3-23
Starting the engine ................................ 3-17
Starting the watercraft ........................... 3-22
Start switch............................................ 2-10
Steering system ...........................2-12, 3-12
Stern drain plug ....................................... 3-9
Stopping the engine .............................. 3-19
Stopping the watercraft ......................... 3-31
Storage.................................................... 4-1
Storage compartments .......................... 2-24
Submerged watercraft ............................. 5-8
Switches ................................................ 3-14
T
Tachometer ........................................... 2-19
Throttle .................................................. 3-11
Throttle lever ......................................... 2-10
Towing the watercraft .............................. 5-7
Transporting .......................................... 3-36
Troubleshooting ...................................... 5-1
Troubleshooting chart ............................. 5-1
Turning the watercraft ........................... 3-29
W
Warning labels ........................................ 1-6
Watercraft characteristics ...................... 1-17
Water separator ...................................... 3-8
Water-skiing .......................................... 1-19
Y
Yamaha Engine Management
System (YEMS) ..................................... 2-15
Yamaha Security System
(for VX110 Deluxe) ................................ 2-15
Yamaha Security System lock and
unlock modes (for VX110 Deluxe) ........ 2-16
Yamaha Security System/Low-RPM
mode (for VX110 Deluxe) ...................... 2-15
E_F1K-70.book Page 2 Thursday, October 20, 2005 1:30 PM