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Yamaha Grizzly YF70GG, YF70GPG, YF70GPSG. Service manual (2016) - part 23

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ELECTRICAL COMPONENTS

Four-wheel-drive motor relay 2

Pocket tester

First step:

90890-03112

Analog pocket tester

1

YU-03112-C

3

TIP

2

The pocket tester or the analog pocket tester

Y/B

B

Br

readings are shown in the following table.

Br

B/Y

No continuity

Positive tester probe →

black/yellow “1”

1. Positive tester probe

Negative tester probe → yellow

2. Negative tester probe

“2”

3. Negative tester probe

Continuity

Positive tester probe → yellow

Result

“2”

Continuity

Negative tester probe →

(between “1” and “2”)

black/yellow “1”

No continuity

(between “1” and “3”)

Second step:

1

3

2

5

+

4

Y

2

B/Y

1

Y/B

B

Br

Br

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

B/Y

a. Disconnect the diode from the wire harness.

b. Connect the pocket tester (Ω × 1) to the diode

1. Positive battery terminal

coupler as shown.

2. Negative battery terminal

c. Check the diode for continuity.

3. Positive tester probe

d. Check the diode for no continuity.

4. Negative tester probe

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

5. Negative tester probe

EBS30299

CHECKING THE SPARK PLUG CAP

Result

1. Check:

No continuity

• Spark plug cap resistance

(between “3” and “4”)

Out of specification → Replace.

Continuity

(between “3” and “5”)

Resistance

10.0 kΩ

EBS30416

CHECKING THE DIODE

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

1. Check:

a. Remove the spark plug cap from the spark

• Diode

plug lead.

Out of specification → Replace.

b. Connect the pocket tester (Ω × 1k) to the

spark plug cap as shown.

9-90

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ELECTRICAL COMPONENTS

2. Check:

Pocket tester

• Secondary coil resistance

90890-03112

Out of specification → Replace.

Analog pocket tester

YU-03112-C

Secondary coil resistance

8.64-12.96 kΩ

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Disconnect the spark plug cap from the igni-

tion coil.

b. Connect the pocket tester (Ω × 1k) to the ig-

nition coil as shown.

Pocket tester

90890-03112

Analog pocket tester

YU-03112-C

c. Measure the spark plug cap resistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

• Positive tester probe

EBS30300

red/black “1”

CHECKING THE IGNITION COIL

• Negative tester probe

1. Check:

Spark plug lead “2”

• Primary coil resistance

Out of specification → Replace.

Primary coil resistance

2.16-2.64 Ω

1

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Disconnect the ignition coil connectors from

the ignition coil terminals.

b. Connect the pocket tester (Ω × 1) to the igni-

tion coil as shown.

c. Measure the secondary coil resistance.

Pocket tester

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

90890-03112

Analog pocket tester

EBS30302

YU-03112-C

CHECKING THE CRANKSHAFT POSITION

SENSOR

• Positive tester probe

1. Disconnect:

orange “1”

• Crankshaft position sensor coupler

• Negative tester probe

(from the wire harness)

red/black “2”

2. Check:

• Crankshaft position sensor resistance

Out of specification → Replace the crank-

shaft position sensor/stator assembly.

Crankshaft position sensor resis-

tance

152-228 Ω

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Connect the pocket tester (Ω × 100) to the

crankshaft position sensor coupler as shown.

c. Measure the primary coil resistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

9-91

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ELECTRICAL COMPONENTS

Pocket tester

90890-03112

Analog pocket tester

65˚

65˚

YU-03112-C

• Positive tester probe

UP

L

Y/G

B/L

gray “1”

• Negative tester probe

black “2”

1

2

c. Set the main switch to “

” (on).

d. Tilt the lean angle sensor to 65°.

e. Measure the lean angle sensor output volt-

age.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

EBS30304

Gy

B

CHECKING THE STARTER MOTOR

OPERATION

1

2

1. Check:

• Starter motor operation

b. Measure the crankshaft position sensor re-

Does not operate → Perform the electric

sistance.

starting system troubleshooting, starting with

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

step 4.

EBS30303

Refer to “TROUBLESHOOTING” on page

CHECKING THE LEAN ANGLE SENSOR

10-1.

1. Remove:

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

• Lean angle sensor

a. Connect the positive battery terminal “1” and

2. Check:

starter motor lead “2” with a jumper lead “3”.

EWB03700

• Lean angle sensor output voltage

WARNING

Out of specification → Replace.

• A wire that is used as a jumper lead must

Lean angle sensor output voltage

have at least the same capacity of the bat-

Less than 65°: 3.55-4.45 V

tery lead, otherwise the jumper lead may

More than 65°: 0.65-1.35 V

burn.

• This check is likely to produce sparks,

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

therefore, make sure no flammable gas or

a. Connect the lean angle sensor coupler to the

fluid is in the vicinity.

wire harness.

b. Connect the pocket tester (DC 20 V) to the

lean angle sensor coupler as shown.

Pocket tester

90890-03112

Analog pocket tester

YU-03112-C

R/W

Br/B

L/Y R/Y

• Positive tester probe

yellow/green “1”

• Negative tester probe

black/blue “2”

b. Check the starter motor operation.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

9-92

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ELECTRICAL COMPONENTS

EBS30305

CHECKING THE STATOR COIL

Charging voltage

1. Disconnect:

above 14 V at 5000 r/min

• AC magneto coupler

(from the wire harness)

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Connect the engine tachometer to the spark

2. Check:

plug lead.

• Stator coil resistance

b. Connect the pocket tester (DC 20 V) to the

Out of specification → Replace the crank-

rectifier/regulator coupler as shown.

shaft position sensor/stator assembly.

Pocket tester

Stator coil resistance

90890-03112

0.15-0.22 Ω

Analog pocket tester

YU-03112-C

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Connect the pocket tester (Ω × 1) to the AC

magneto coupler as shown.

• Positive tester probe

red “1”

Pocket tester

• Negative tester probe

90890-03112

black “2”

Analog pocket tester

YU-03112-C

•

Positive tester probe

white “1”

•

Negative tester probe

white “2”

W

W

W

R

B

•

Positive tester probe

white “1”

1

2

•

Negative tester probe

white “3”

c. Start the engine and let it run at approximate-

•

Positive tester probe

ly 5000 r/min.

white “2”

d. Measure the charging voltage.

•

Negative tester probe

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

white “3”

EBS30307

CHECKING THE FUEL SENDER

1. Disconnect:

• Fuel pump coupler

(from the wire harness)

2. Remove:

• Fuel pump assembly

(from the fuel tank)

W

W

W

3. Check:

• Fuel sender resistance

1

2 3

Out of specification → Replace the fuel pump

assembly.

b. Measure the stator coil resistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

Sender unit resistance (full)

EBS30306

19.00-21.00 Ω

CHECKING THE RECTIFIER/REGULATOR

Sender unit resistance (empty)

1. Check:

138.50-141.50 Ω

• Charging voltage

Out of specification → Replace the rectifi-

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

er/regulator.

a. Connect the pocket tester (Ω × 10) to the fuel

sender terminal as shown.

9-93

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ELECTRICAL COMPONENTS

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

Pocket tester

a. Connect the pocket tester (DC 20 V) to the

90890-03112

speed sensor coupler as shown.

Analog pocket tester

YU-03112-C

Pocket tester

90890-03112

Analog pocket tester

• Positive tester probe

green/yellow “1”

YU-03112-C

• Negative tester probe

black/white “2”

• Positive tester probe

white “1”

• Negative tester probe

black/blue “2”

1

R/L

B

B/W

G/Y

W

L/Y

L

W

1

2

B

/

L

B

/

L

b.

Move the fuel sender float to the minimum “3”

2

and maximum “4” level positions.

b. Set the main switch to “

” (on).

c. Elevate the rear wheels and slowly rotate

them.

d. Measure the voltage (DC 20 V) of white and

black/blue. With each full rotation of the rear

4

wheel, the voltage reading should cycle from

0.6 V to 4.8 V to 0.6 V to 4.8 V.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

EBS30310

CHECKING THE RADIATOR FAN MOTOR

1. Check:

• Radiator fan motor

Faulty/rough movement → Replace.

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Disconnect the radiator fan motor coupler

from the wire harness.

3

b. Connect the battery (DC 12 V) as shown.

• Positive battery terminal

blue “1”

• Negative battery terminal

black “2”

c.

Measure the fuel sender resistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

EBS30309

CHECKING THE SPEED SENSOR

1. Check:

• Speed sensor output voltage

Out of specification → Replace.

Output voltage reading cycle

0.6 V-4.8 V-0.6 V-4.8 V-0.6 V

9-94

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ELECTRICAL COMPONENTS

EBS30312

c. Measure the radiator fan motor movement.

CHECKING THE COOLANT TEMPERATURE

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

SENSOR

EBS30311

1. Remove:

CHECKING THE RADIATOR FAN MOTOR

• Coolant temperature sensor

CIRCUIT BREAKER

EWB03710

1. Remove:

WARNING

• Radiator fan motor circuit breaker

• Handle the coolant temperature sensor

(from the wire harness)

with special care.

TIP

• Never subject the coolant temperature sen-

The radiator fan motor circuit breaker “1”

is at-

sor to strong shocks. If the coolant tem-

tached to the wire harness with black tape as

perature sensor is dropped, replace it.

shown in the illustration.

2. Check:

• Coolant temperature sensor resistance

Out of specification → Replace.

Coolant temperature sensor re-

sistance

2.32-2.59 kΩ at 20 °C (68 °F)

310-326 Ω at 80 °C (176 °F)

1

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Connect the pocket tester (Ω × 100) to the

coolant temperature sensor terminals as

2. Check:

shown.

• Radiator fan motor circuit breaker resistance

Out of specification → Replace the radiator

Pocket tester

90890-03112

fan motor circuit breaker.

Analog pocket tester

Radiator fan motor circuit break-

YU-03112-C

er resistance

Zero Ω at 20 °C (68 °F)

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

3

a. Connect the pocket tester (Ω × 1) to the radi-

1

ator fan motor circuit breaker as shown.

Pocket tester

90890-03112

Analog pocket tester

2

YU-03112-C

b. Immerse the coolant temperature sensor “1”

in a container filled with coolant “2”.

TIP

Make sure the coolant temperature sensor ter-

minals do not get wet.

c. Place a thermometer “3” in the coolant.

d. Slowly heat the coolant, and then let it cool

down to the specified temperature.

e. Measure the coolant temperature sensor re-

sistance.

b. Measure the radiator fan motor circuit break-

er resistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

9-95

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ELECTRICAL COMPONENTS

EBS30313

CHECKING THE THROTTLE POSITION

Resistance

SENSOR

12.0 Ω

1. Remove:

• Throttle position sensor

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Disconnect the fuel injector coupler from wire

(from the throttle body)

harness.

2. Check:

b. Connect the pocket tester (Ω × 1) to the fuel

• Throttle position sensor maximum resistance

injector terminals as shown.

Out of specification → Replace the throttle

position sensor.

Pocket tester

90890-03112

Resistance

Analog pocket tester

2.64-6.16 kΩ

YU-03112-C

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Connect the pocket tester (Ω × 1k) to the

• Positive tester probe

throttle position sensor terminal as shown.

Fuel injector terminal “1”

• Negative tester probe

Pocket tester

Fuel injector terminal “2”

90890-03112

Analog pocket tester

YU-03112-C

1

2

• Positive tester probe

R/L

R/B

blue “1”

• Negative tester probe

black/blue “2”

1

2

c. Measure the fuel injector resistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

EBS30317

CHECKING THE AIR INDUCTION SYSTEM

SOLENOID

L

Y

B/L

1. Check:

• Air induction system solenoid resistance

Out of specification → Replace.

b. Measure the throttle position sensor resis-

tance.

Solenoid resistance

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

18-22 Ω

3. Install:

• Throttle position sensor

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Disconnect the air induction system solenoid

TIP

coupler from the wire harness.

When installing the throttle position sensor, ad-

b. Connect the pocket tester (Ω × 1) to the air in-

just its angle properly. Refer to “ADJUSTING

duction system solenoid terminals as shown.

THE THROTTLE POSITION SENSOR” on page

7-7.

Pocket tester

90890-03112

EBS30316

Analog pocket tester

CHECKING THE FUEL INJECTOR

YU-03112-C

1. Check:

• Fuel injector resistance

Out of specification → Replace the fuel injec-

tor.

9-96

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ELECTRICAL COMPONENTS

c. Measure the intake air pressure sensor out-

• Positive tester probe →

Air induction system solenoid terminal “1”

put voltage.

• Negative tester probe →

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

Air induction system solenoid terminal “2”

EBS30315

CHECKING THE INTAKE AIR

TEMPERATURE SENSOR

2

1

1. Remove:

• Intake air temperature sensor

(from the air filter case.)

EWB03820

WARNING

• Handle the intake air temperature sensor

with special care.

• Never subject the intake air temperature

sensor to strong shocks. If the intake air

c. Measure the air induction system solenoid re-

temperature sensor is dropped, replace it.

sistance.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

2. Check:

• Intake air temperature sensor resistance

EBS30314

CHECKING THE INTAKE AIR PRESSURE

Out of specification → Replace.

SENSOR

Intake air temperature sensor re-

1. Check:

sistance

• Intake air pressure sensor output voltage

5.40-6.60 kΩ at 0 °C (32 °F)

Out of specification → Replace.

290-390 Ω at 80 °C (176 °F)

Intake air pressure sensor output

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

voltage

a. Connect the pocket tester (Ω × 100) to the in-

3.75-4.25 V

take air temperature sensor terminal as

shown.

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

a. Connect the pocket tester (DC 20 V) to the in-

Pocket tester

take air pressure sensor coupler as shown.

90890-03112

Analog pocket tester

Pocket tester

YU-03112-C

90890-03112

Analog pocket tester

YU-03112-C

3

• Positive tester probe

1

pink “1”

• Negative tester probe

black/blue “2”

2

b. Immerse the intake air temperature sensor

“1” in a container filled with water “2”.

TIP

Make sure that the air temperature sensor termi-

nals do not get wet.

c. Place a thermometer “3” in the water.

b. Set the main switch to “

” (on).

d. Slowly heat the water, then let it cool down to

the specified temperature.

9-97

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ELECTRICAL COMPONENTS

EBS30320

e. Measure the intake air temperature sensor

CHECKING THE EPS TORQUE SENSOR (for

resistance.

EPS models)

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

1. Remove:

EBS30319

• EPS unit

CHECKING THE EPS MOTOR (for EPS

2. Check:

models)

• EPS torque sensor resistance

1. Remove:

Out of specification → Replace the EPS unit.

• EPS unit

2. Check:

Coil resistance

• EPS motor

1.00-1.50 kΩ (YF70GPG,

Out of specification → Replace the EPS unit.

YF70GPLG, YF70GPSG,

TIP

YFM700FWAD, YFM70GPHG,

YFM70GPLG, YFM70GPSG,

The pocket tester and the analog pocket tester

YFM70GPXG)

readings are shown in the following table.

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

Continuity

a. Connect the pocket tester (Ω × 1k) to the EPS

Positive tester probe → red “1”

torque sensor coupler terminal as shown.

Negative tester probe → black

“2”

Pocket tester

No continuity

90890-03112

Positive tester probe → red “1”

Analog pocket tester

Negative tester probe → EPS

YU-03112-C

motor body “3”

No continuity

• Positive tester probe →

Positive tester probe → black

red “1”

“2”

• Negative tester probe →

Negative tester probe → EPS

black “2”

motor body “3”

1

2

1

2

G

R

B

W

B

R

3

b. Measure the EPS torque sensor resistance.

▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

a. Connect the pocket tester (Ω × 1) to the EPS

motor coupler terminal and EPS motor body.

Pocket tester

90890-03112

Analog pocket tester

YU-03112-C

b. Check the EPS motor for continuity.

c. Check the EPS motor for no continuity.

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

9-98

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TROUBLESHOOTING

EBS30325

FAULTY DRIVE TRAIN

The following conditions may indicate damaged shaft drive components:

Symptoms

Possible Causes

1. A pronounced hesitation or “jerky” movement

A. Bearing damage.

during acceleration, deceleration, or sustained

B. Improper gear backlash.

speed. (This must not be confused with engine

C. Gear tooth damage.

surging or transmission characteristics.)

D. Broken drive shaft.

2. A “rolling rumble” noticeable at low speed; a high-

E. Broken gear teeth.

pitched whine; a “clunk” from a shaft drive com-

F. Seizure due to lack of lubrication.

ponent or area.

G. Small foreign objects lodged between the moving

3. A locked-up condition of the shaft drive mecha-

parts.

nism, no power transmitted from the engine to the

front and/or rear wheels.

TIP

Areas A, B, and C above may be extremely difficult to diagnose. The symptoms are quite subtle and

difficult to distinguish from normal vehicle operating noise. If there is reason to believe these compo-

nents are damaged, remove the components and check them.

10-3

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE

EBS20086

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE

EBS30336

SELF-DIAGNOSTIC FUNCTION TABLE

Fault code

Item

No.

Crankshaft position sensor: no normal signals are received from the crankshaft position sen-

12

sor.

13

Intake air pressure sensor: open or short circuit detected.

14

Intake air pressure sensor: hose system malfunction (clogged or detached hose).

15

Throttle position sensor: open or short circuit detected.

16

Throttle position sensor: stuck throttle position sensor is detected.

21

Coolant temperature sensor: open or short circuit detected.

22

Intake air temperature sensor: open or short circuit detected.

30

Latch up detected.

33

Ignition coil: open or short circuit detected in the primary lead of the ignition coil.

Component other than ISC (Idle Speed Control) unit is defective (ISC operating sound is

37

heard).

Defective ISC (Idle Speed Control) unit (ISC operating sound is not heard).

39

Fuel injector: open or short circuit detected.

41

Lean angle sensor: open or short circuit detected.

42

Speed sensor: no normal signals are received from the speed sensor.

43

Fuel system voltage: incorrect voltage supplied to the fuel injector and fuel pump.

44

EEPROM fault code number: an error is detected while reading or writing on EEPROM.

46

Charging voltage is abnormal.

Faulty ECU (Engine Control Unit) memory. (When this malfunction is detected in the ECU, the

50

fault code number might not appear.)

EBS30337

COMMUNICATION ERROR WITH THE METER

Fault code

Item

No.

ECU (Engine Control Unit) internal malfunction (output signal error): signals cannot be trans-

Er-1

mitted between the ECU and the multi-function meter.

ECU (Engine Control Unit) internal malfunction (output signal error): no signals are received

Er-2

from the ECU within the specified duration.

ECU (Engine Control Unit) internal malfunction (output signal error): data from the ECU cannot

Er-3

be received correctly.

ECU (Engine Control Unit) internal malfunction (input signal error): non-registered data has

Er-4

been received from the meter assembly.

EBS30338

DIAGNOSTIC CODE: SENSOR OPERATION TABLE

TIP

The diagnostic code numbers cannot be displayed on the multi-function meter. To display the diagnos-

tic code numbers, use the Yamaha diagnostic tool.

10-7

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE

Diagnostic

Item

Display

Procedure

code No.

01

Throttle angle

Check with throttle valve fully

closed.

• Fully closed position

14-20

03

Pressure difference

Displays the intake air pres-

Set the engine stop switch to

(atmospheric pressure and

sure.

“

”, and then operate the

intake air pressure)

throttle while pushing the

start switch “

”. (If the dis-

play value changes, the per-

formance is OK.)

05

Intake air temperature

Displays the intake air tem-

Compare the actually mea-

perature.

sured intake air temperature

with the indicated value.

06

Coolant temperature

Displays the coolant tem-

Compare the actually mea-

perature.

sured coolant temperature

with the indicated value.

07

Vehicle speed pulse

0-999

Check that the number in-

creases when the rear

wheels are rotated.

The number is cumulative

and does not reset each time

the wheel is stopped.

08

Lean angle sensor output

Remove the lean angle sen-

voltage

sor and incline it more than

65 degrees.

• Upright

3.6-4.4

• Overturned

0.7-1.3

09

Fuel system voltage

Approximately 12.0

Turn the main switch to “

”

(battery voltage)

(on), and then compare the

actually measured battery

voltage with the display val-

ue. (If the actually measured

battery voltage is low, re-

charge the battery.)

21

Neutral switch

Shift the transmission.

• Neutral

ON

• In gear

OFF

60

EEPROM fault code display

The fault code No. 44 detect-

—

ed EEPROM errors are indi-

cated.

00 indication: Normal status

61

Malfunction history code dis-

play

• No history

00

—

• History exists

Fault codes 12-50

—

• (If more than one code

number is detected, the

display alternates every

two seconds to show all the

detected code numbers.

When all code numbers are

shown, the display repeats

the same process.)

10-8

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE

Diagnostic

Item

Display

Procedure

code No.

62

Malfunction history code era-

sure

• No history

0

—

• History exists

Displays the total number of

Save the malfunction history

malfunctions, including the

to the computer, and then

current malfunction, that

delete the fault codes.

have occurred since the his-

tory was last erased. (For ex-

ample, if there have been

three malfunctions, “03” is

displayed.)

70

Control number

0-254 [-]

—

EBS30339

DIAGNOSTIC CODE: ACTUATOR OPERATION TABLE

Diagnos-

tic code

Item

Actuation

Procedure

No.

Actuates the ignition coil five

times at one-second intervals.

Check that a spark is generat-

The “CHECK” indicator and

30

Ignition coil

ed five times.

“

” on the Yamaha diagnostic

• Connect an ignition checker.

tool screen come on each time

the ignition coil is actuated.

Actuates the fuel injector five

Disconnect the fuel pump

times at one-second intervals.

coupler, and then check that

The “CHECK” indicator and

36

Fuel injector

fuel injector is actuated five

“

” on the Yamaha diagnostic

times by listening for the oper-

tool screen come on each time

ating sound.

the fuel injector is actuated.

Actuates the air induction sys-

tem solenoid five times at one-

second intervals.

Check that the air induction

The “CHECK” indicator and

system solenoid is actuated

48

Air induction system solenoid

“

” on the Yamaha diagnostic

five times by listening for the

tool screen come on each time

operating sound.

the air induction system sole-

noid is actuated.

Actuates the fuel injection sys-

tem relay five times at one-sec-

ond intervals.

The “CHECK” indicator and

“

” on the Yamaha diagnostic

tool screen come on each time

Check that the fuel injection

the relay is actuated.

system relay is actuated five

50

Fuel injection system relay

(When the relay is on, the

times by listening for the oper-

“CHECK” indicator and “

” on

ating sound.

the Yamaha diagnostic tool

screen go off. When the relay is

off, the “CHECK” indicator and

“

” on the Yamaha diagnostic

tool screen come on.)

10-9

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE

Diagnos-

tic code

Item

Actuation

Procedure

No.

Actuates the radiator fan motor

relay five times at five-second

intervals. (2 seconds on, 3 sec-

onds off)

The “CHECK” indicator and

“

” on the Yamaha diagnostic

Check that the radiator fan

tool screen come on each time

motor relay is actuated five

51

Radiator fan motor relay

the relay is actuated.

times by listening for the oper-

(When the relay is on, the

ating sound.

“CHECK” indicator and “

” on

the Yamaha diagnostic tool

screen go off. When the relay is

off, the “CHECK” indicator and

“

” on the Yamaha diagnostic

tool screen come on.)

Fully closes the ISC valve, and

then opens the valve. This oper-

ation takes approximately 3 sec-

The operating sound can be

onds.

54

ISC valve

heard when ISC valve oper-

The “CHECK” indicator and

ates.

“

” on the Yamaha diagnostic

tool screen come on during the

operation.

10-10

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