check engine YAMAHA VX110 2005 Owner's Manual

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FUSE
Refer to “STARTING SYSTEM”.
BATTERY
Refer to “ELECTRICAL” in Chapter 3.
MAIN AND FUEL PUMP RELAY
Refer to “IGNITION SYSTEM”.
ECM
Refer to “IGNITION SYSTEM”.
ENGINE TEMPERATURE SENSOR
Refer to “IGNITION SYSTEM”.
THERMOSWITCH (ENGINE)
Refer to “IGNITION SYSTEM”.
THERMOSWITCH (EXHAUST)
Refer to “IGNITION SYSTEM”.
REMOTE CONTROL UNIT
(DELUXE MODEL ONLY)
Refer to “REMOTE CONTROL SYS-
TEM (DELUXE MODEL ONLY)”.
BUZZER
1. Check:
Buzzer
Buzzer does not sound → Replace.
Checking steps:
Connect the battery (12 V) to the buzzer
coupler as shown.
Battery positive terminal →
Red (R) terminal 1
Battery negative terminal →
Black (B) terminal 2
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OIL PRESSURE SWITCH
1. Measure:
Oil pressure switch continuity
Out of specification → Replace.
Lower unit pressure/vacuum
tester:
YB-35956-A
Vacuum/pressure pump gauge
set:
90890-06756
Oil pressure switch continuity
pressure:
128 kPa (1.28 kgf/cm
2, 18.6 psi) –
167 kPa (1.67 kgf/cm2, 24.2 psi)
MULTIFUNCTION METER
Multifunction meter
1. Check:
Multifunction meter
Cracked meter housing → Replace the
multifunction meter.
Meter is fogged/shows signs of water
intrusion → Replace the multifunction
meter.
MULTIFUNCTION METER REMOVAL
Refer to “ENGINE HATCH COVER” in
Chapter 8.
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Tachometer display
1. Check:
Tachometer display
Does not display → Check the engine
speed using the “Engine monitor” of the
Yamaha Diagnostic System.
Replace the multifunction meter.
Hour meter display
1. Check:
Hour meter display
Does not display → Replace the multi-
function meter.
Voltage meter display
1. Check:
Voltage meter display
Does not display → Check the battery
voltage using the “Engine monitor” of
the Yamaha Diagnostic System.
Replace the multifunction meter.
Low oil pressure warning indicator
1. Check:
Low oil pressure warning indicator
Does not come on → Check the oil pres-
sure switch using the “Engine monitor”
of the Yamaha Diagnostic System.
Replace the multifunction meter.
Fuel level meter display and fuel warning
indicator
1. Check:
Fuel level meter display and fuel warn-
ing indicator
Do not display → Measure the fuel
sender resistance.
If the fuel sender resistance is within
specification, replace the multifunction
meter.
2. Measure:
Fuel sender resistance
Refer to “FUEL CONTROL SYSTEM”.
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Overheat warning indicator
1. Check:
Overheat warning indicator
Does not come on → Replace the multi-
function meter.
Checking steps:
Start the engine.
Disconnect the thermoswitch (engine)
connector 1 (blue), engine temperature
sensor connector 2 (black), or ther-
moswitch (exhaust) 3 connector.
Connect the jumper lead to the female
terminal of the disconnected connector.
Check that the multifunction meter over-
heat warning indicator blinks, then comes
on. The buzzer also begins to sound
intermittently, then sounds continuously.
3
12
Check engine warning indicator
1. Check:
Check engine warning indicator
Does not come on → Replace the multi-
function meter.
Checking steps:
Start the engine.
Disconnect the coupler of a sensor (e.g.,
engine temperature sensor) that normally
activates the check engine warning indi-
cator when a malfunction occurs.
Check that the warning light and check
engine warning indicator begin to blink
and the buzzer sounds intermittently.
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Diagnostic display
1. Check:
Diagnostic display
Does not display → Replace the multi-
function meter.
Checking steps:
Start the engine.
Disconnect the coupler of a sensor (e.g,.
engine temperature sensor) that is nor-
mally displayed when a malfunction
occurs. Refer to “SELF-DIAGNOSIS” in
Chapter 9.
Check that the check engine warning
indicator comes on and that the buzzer
sounds.
Press the select switch 1 for 8 seconds
and check the error code indicated on the
multifunction meter.
1
INDICATION SYSTEM
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REMOTE CONTROL SYSTEM
(DELUXE MODEL ONLY)
REMOTE CONTROL SYSTEM
Yamaha Security System indicator
1. Check:
Yamaha Security System indicator
Check that the “SECURITY” indicator
light 1 comes on when the Yamaha
Security System is deactivated (i.e., the
engine can be started).
Does not come on → Measure the
remote control unit output voltage.
2. Measure:
Remote control unit output voltage
Within specification → Replace the mul-
tifunction meter.
Out of specification → Replace the
remote control unit.
Remote control unit output
voltage:
Blue/yellow (L/Y) – ground
11–13 V
Measurement steps:
Disconnect the remote control unit 1
coupler from the multifunction meter.
Measure the remote control unit output
voltage while pushing the unlock button
of the remote control transmitter.
1
1
L/Y
1
Low-rpm mode indicator
1. Check:
Low-rpm mode indicator
Does not come on → Replace the multi-
function meter.
Checking steps:
Press the unlock button 1 of the remote
control transmitter for more than 4 sec-
onds to select the low-rpm mode.
Check that the beeper sounds three
times and that the “L-MODE” indicator
light 2 comes on.
1
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REMOTE CONTROL SYSTEM
(DELUXE MODEL ONLY)
Checking the remote control transmitter
1. Check:
Remote control transmitter
Does not operate → Replace the remote
control transmitter.
Checking steps:
CAUTION:
If the buttons on the remote control
transmitter are pushed but the transmit-
ter does not operate, the battery may be
low.
Press the lock button 1 of the remote
control transmitter. The beeper sounds
once.
Check that the “SECURITY” indicator
light goes off and that the engine cannot
be started.
Press the unlock button 2 of the remote
control transmitter for a short time. The
beeper sounds two or three times.
Check that the “SECURITY” indicator
light comes on and that the engine can
be started.
Press the unlock button for more than 4
seconds to select the low-rpm mode.
Check that the beeper sounds three
times and that the “L-MODE” indicator
light comes on.
Number of
beepsYamaha
Security
System modeEngine
startability
1 beep Lock Unable
2 beepsUnlock
(normal mode)Able
3 beepsUnlock
(low-rpm
mode)Able
12
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INTRODUCTION
INTRODUCTION
FEATURES
The newly developed Yamaha Diagnostic System provides quicker detection and analysis of engine
malfunctions.
By connecting your computer to the ECM (Electronic Control Module) of a watercraft using the com-
munication cable, this software can be used to display sensor data and data stored in the ECM on a
computer’s monitor.
If this software is run on Microsoft Windows
® 95, Windows 98, Windows Me, Windows 2000, or
Windows XP the information can be displayed in colorful graphics. Also, the software can be oper-
ated using either a mouse or a keyboard.
In addition, the data for the main functions (Diagnosis, Diagnosis record, Engine monitor, and Data
logger) can be saved on a disk or printed out.
Functions
1.Diagnosis:
Each sensor’s status and each ECM diagnosis code or item are displayed. This
enables you to find malfunctioning parts and controls quickly.
2.Diagnosis record:
Sensors that had been activated and ECM diagnostic codes that have been
recorded are displayed. This allows you to check the watercraft’s record of malfunctions.
3.Engine monitor:
Each sensor’s status and the ECM data are displayed. This enables you to
find malfunctioning parts quickly. In addition, the data displayed using the Engine Monitor func-
tion can be displayed in a graph.
4.Stationary test:
Operation tests can be performed with the engine off.
5.Active test:
Operation tests can be performed with the engine running.
6.Data logger:
From the data stored in the ECM, at least two items of 78 seconds of recorded
data are displayed on a graph. In addition, the operating time as compared to the engine speed
and the total operating time are displayed. This allows you to check the operating status of the
engine. For some models, you can also save the ECM record data in a file so that you can read
and display the graph later.
7.Some files:
Lets you select and run other applications while continuing to run the diagnostic
program.
CONTENTS
1. CD-ROM (software + instruction manual) (1)
2. Adapter (1)
3. Communication cable (1)
123
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TROUBLE ANALYSIS
TROUBLE ANALYSIS
NOTE:
Before consulting the “TROUBLE ANALYSIS CHART,” check the following items.
1. Check that the battery is charged and that its specified gravity is within specification.
2. Check that there are no incorrect wiring connections.
3. Check that all wiring connections are properly secured and that they are not rusty.
4. Check that the engine shut-off cord (lanyard) is connect to the engine shut-off switch.
5. Check that fuel is reaching the fuel rail.
TROUBLE ANALYSIS CHART
Trouble mode Check elements
ENGINE WILL NOT START
HARD STARTING
ROUGH IDLING
HIGH IDLING
ENGINE STALLS
POOR ACCELERATION
ENGINE WILL NOT STOP
POOR PERFORMANCE
LIMITED ENGINE SPEED
OVERHEATING
LOW OIL PRESSURE
LOOSE STEERING
BILGE INCREASE
IRREGULAR WARNING INDICATION
POOR BATTERY CHARGING
Relative partReference
chapter
FUEL SYSTEM
Fuel tank 4
Fuel tank breather hose 4
Fuel hose 4
Fuel filter 4
Fuel pump 4
Fuel rail 4
Fuel injectors 4
Trolling speed 3
Air filter 3
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TROUBLE ANALYSIS
POWER UNIT
Compression 5
Cylinder head gaskets 5
Cylinder block 5
Crankcase 5
Piston rings 5
Pistons 5
Bearings 5
Valve(s) and valve seat(s) 5
Valve clearance adjusting
pad(s)3
Camshaft(s) 5
Timing chain 5
Oil pump 5
Engine oil 3
Oil filter 3
Oil pressure switch 7
Bearing housing 5
Drive couplings 5
Rubber coupling 5
Pilot water hose 5
Water hose 5
Water passage 5 Trouble mode Check elements
ENGINE WILL NOT START
HARD STARTING
ROUGH IDLING
HIGH IDLING
ENGINE STALLS
POOR ACCELERATION
ENGINE WILL NOT STOP
POOR PERFORMANCE
LIMITED ENGINE SPEED
OVERHEATING
LOW OIL PRESSURE
LOOSE STEERING
BILGE INCREASE
IRREGULAR WARNING INDICATION
POOR BATTERY CHARGING
Relative partReference
chapter
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