Snowmobile Yamaha Phazer PZ50W, PZ50GTW, PZ50FXW, PZ50MW, PZ50VTW, PZ50MPW. Instruction - part 64

 

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Snowmobile Yamaha Phazer PZ50W, PZ50GTW, PZ50FXW, PZ50MW, PZ50VTW, PZ50MPW. Instruction - part 64

 

 

7-2

FI

FUEL INJECTION SYSTEM

WIRING D

IAGRA

M

B

R

/L

(20A)

R

/W

R

/W

R

/W

O

R

/W

(BLACK)

O

O

O

B

L/

W

B

G

Lg

Y

(BLACK)

OFF

ON

START

W

W

W

W

W

W

B

/L

Gy

L

/W

Lg

G

L

L

/W

R

/W

R

/G

L/

W

(10A)

HI

LO

G

B

Y

G

B

Y

OFF

ON

R

B

R

R

W

W

Lg

Y

B

B

B

Y

G

Y

G

R

/G

R

R

R

R

B

B

B

CLOSE

OPEN

B

/Y

Ch

RUN

STOP

Br

/L

W

Br

R

B

Y

/R

B

/R

B

/R

Y

/L

Y

/L

Y

/W

Y

/W

Ch

B

/L

Y

/W

Y

/L

Ch

B

R

/Y

Ch

R

/B

B

Gy

(BLACK)

B

/L

Gy

Br

B

/W

R

Br

/L

W

Br

(GLAY)

WW

W

R

Br

Br

R

/W

L/

W

R

/Y

B

Br

/W

L

/W

R

R

B

B

R

R

L

/Y

B

/R

R

/W

L/

W

Br

/W

Br

Br

R

/W

B

/Y

B

/Y

Ch

B

/L

(BLACK)

(BLACK)

(BLACK)

(BLACK)

L

/YR

/B

Y

Ch

B

/R

R

/WG

/B

G

L/

R

B

LY

B

W

/Y

L

B

/L

P

O

/R

B

/W

W

/B

L

B

/L

(BLACK)

WL

B

(BLACK)

R

/LR

/B

R

/LG

/B

G

/WB

/L

R

/L

L

/R

R

/G

R

/W

L

/R

R

/L

R

/W

R

/G

Y

/G

Y

/G

B

G

G

Ch

Ch

G

/B

G

/B

R

/B

Ch

(GLAY)

(GLAY)

R

/Y

L

/R

L

/W

Br

B

R

R

R

B

B

(BLACK)

L

/W

R

/W

R

/W

L

/W

B

Lg

Y

/R

O

/B

L

/Y

G

/Y

B

/Y

L

/W

R

/W

R

/W

Y

/L

Br

/B

Y

/L

Y

/W

Sb

/W

G

/W

Br

/W

B

/L

G

/B

W

/B

W

/Y

P

/W

L

/R

R

/L

R

/B

Gy

/R

Gy

Br

/L

Y

/G

Lg

Lg

Y

L

W

P

B

O

B

Ch

R

/L

R

/L

G

/B

G

/B

G

/B

R

/B

B

R

/L

B

B

B

(BLACK)

B

/L

W

/B

L

B

/L

W

/Y

L

Y

B

/L

L

P

/W

B

/L

L

A

R

/L

R

/L

B

/L

G

/W

Br

/W

B

/L

L

P

/W

B

/L

L

/R

L

/R

R

/W

G

Lg

L

/W

Y

Y

W

G

/W

Gy

B

/YW

/YY

/W

W

/L

W

/RO

/B

Br

/B

B

/R

P

/WR

/L

Y

/G

Ch

B

/L

L

/Y

Lg

R

/W

Br

/W

L

/WP

Y

/L

L

W

/BR

/W

O

Y

/R

Y

/LG

/Y

Br

/L

L

/R

B

R

/B

Lg

B

G

/B

Gy

/R

Sb

/W

Br

/W

B

/L

(40A)

(20A)

(15A)

(3A)

(4A)

(7.5A)

R

/W

Gy

/R

R

/W

(BLACK)

A

Gy

/R

A

A

R

/B

R

/B

A

(BLACK)

(DARK GREEN)

L

P

B

/L

L

P

B

/L

Gy

/R

Gy

/R

C

B

/L

B

/L

C

G

/W

G

/W

W

B

C

Ch

Ch

Ch

A

(BLACK)

(BLACK)

W

Lg

Lg

(BLACK)

(GRAY)

Y

B

/L

L

(BLACK)

(GRAY)

R

/L

R

/L

B

(BLACK)

R

B

(BLACK)

(GRAY)

(BLACK)

(BLACK)

B

R

/L

(BLACK)

E

W

/R

W

/R

E

W

/L

W

/L

W

/R

W

/L

B

/R

W

/R

W

/L

B

Y

/R

B

Y

/R

Br

/R

G

/Y

L

R

/W

Br

/R

Br

/R

L

L

L

R

/W

G

/Y

B

L

B

L

(BLACK)

W

W

O

/B

O

/B

B

R

/G

W

/B

G

B

O

/B

L/

R

G

B

/R

B

Y

/R

B

Y

/R

B

G

L/

R

G

B

Ch

G

/B

Lg

B

W

B

B

B

B

B

B

B

Y

/R

B

/R

B

B

O

/B

L

/R

LO

OFF

HI

G

/R

O

/B

Y

/L

(BLACK)

G

/R

O

/B

Y

/L

(BLACK)

G

B

Y

G

/R

B

Y

/L

G

B

Y

G

/R

B

Y

/L

D

B

B

O

/B

Y

/L

G

/R

Y

/L

Y

/L

G

/R

G

/R

B

B

Y

/L

O

/B

L/

R

L/

R

Y

/L

O

/B

L

/R

L

/R

D

O

/B

O

/B

Br

/B

Y

/R

R

/G

Br

/R

R

/G

(BLACK)

Sb

/W

R

/G

R

/G

B

Sb

(BLACK)

Sb

/W

L/

B

Y

/R

B

Br

/R

Sb

L/

B

E

Sb

Sb

Sb

R

/G

R

/G

R

/G

Y/

R

B

B

R

/G

Y/

R

Br

/B

Br

/R

Sb

Sb

/W

Sb

/W

L/

B

L/

B

Br

/R

E

L/

B

L/

B

E

Br

/R

Br

/R

D

L

/R

L

/R

D

G

G

F

G

G

F

B

B

F

Y

Y

L/

R

O

/B

Br

P

(BLACK)

|

M

L

K

Z

BC

E

E

7

6

0

9

g

j

u

t

s

s

2

4

3

i

y

z

{

~}

5

A

k

F

G

Y

X

T

S

V

U

R

O

P

Q

8

J

N

h

W

b

a

d

L

m

n

o

p

q

r

l

1

D

HI

EE

w

v

x

e

f

f

c

[

\]

^

Ë

É

Ê

Í

Ì

È

E

WIRE HARNESS

GEAR MOTOR

SUB-WIRE

HARNESS

F

WIRE HARNESS

HEADLIGHT

SUB-WIRE

HARNESS

YG

B

Y

G

B

D

WIRE HARNESS

SUB-WIRE

HARNESS 3

B

O

/B

GL

/R

BO

/B

G

L

/R

B

WIRE HARNESS

FUEL PUMP

SUB-WIRE

HARNESS

R

/L

B

C

WIRE HARNESS

SUB-WIRE

HARNESS 2

B

/L

G

/W

Ch

B

/L

G

/W

Ch

A

WIRE HARNESS

SUB-WIRE

HARNESS 1

R

/W

O

R

/B

Gy

/R

G

/BR

/L

R

/W

O

R

/B

Gy

/R

G

/B

R

/L

ÈÈ

W

/R

Br

/R

L/

B

Sb

W

/L

W

/R

Br

/R

L/

B

Sb

W

/L

7-3

FI

FUEL INJECTION SYSTEM

1 Crankshaft position sensor
4 Main switch
5 Main fuse
6 Load control relay
7 Fuel injection system fuse
0 Battery
A Diode
B Engine stop switch
C Throttle switch
E Grip warmer
F Thumb warmer
G Oil pressure switch
H Drive position switch *1
I Reverse position switch *1
J ECU (engine control unit)
K Cylinder-#1 ignition coil
L Spark plug
M Cylinder-#2 ignition coil
N Fuel injection system relay
O Injector #1
P Injector #2
Q Fuel pump
R Throttle position sensor
S Speed sensor
T Cylinder identification sensor
U Cylinder-#1 intake air pressure sensor
V Cylinder-#2 intake air pressure sensor
W Knock sensor
X Coolant temperature sensor
Y Intake air temperature sensor
Z Grip/thumb warmer adjustment switch
c Passenger grip warmer relay
e Passenger grip warmer switch
f Passenger grip warmer
l Multi-function meter
m Warning light
s Headlight
t Headlight relay
u Headlight beam switch
v Radiator fan motor
w Radiator fan motor relay *1
y Ignition fuse
z Radiator fan motor fuse *1
{ Signal fuse
| Headlight fuse

*1  PZ50GT/PZ50FX/PZ50M/PZ50VT/PZ50MP

È PZ50VT/PZ50MP
É PZ50M/PZ50VT/PZ50MP
Ê PZ50VT (STANDARD)/PZ50MP (OPTION)
Ì PZ50/PZ50GT/PZ50M/PZ50VT/PZ50MP
Í PZ50FX

7-4

FI

FUEL INJECTION SYSTEM

ECU SELF-DIAGNOSTIC FUNCTION

The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system is operat-
ing normally. If this function detects a malfunction in the system, it immediately operates the engine under
substitute characteristics and the warning light and self-diagnosis warning indicator come on to alert the rider
that a malfunction has occurred in the system. Once a malfunction has been detected, a fault code is stored in
the memory of the ECU.
• To inform the rider that the fuel injection system is not functioning, the warning light and self-diagnosis warn-

ing indicator flash when the main switch is being turned to the start position.

• If a malfunction is detected in the system by the self-diagnostic function, the ECU provides an appropriate

substitute characteristic operation, and the warning light and self-diagnosis warning indicator flash to alert
the rider of the detected malfunction.

• After the engine has been stopped, the lowest fault code number appears on the odometer/tripmeter LCD.

Once a fault code has been displayed, it remains stored in the memory of the ECU until it is deleted.

SELF-DIAGNOSTIC FUNCTION TABLE

If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the warning light and
self-diagnosis warning indicator come on to alert the rider that a malfunction has occurred and the ECU pro-
vides the engine with alternate operating instructions that are appropriate for the type of malfunction.
When an abnormal signal is received from a sensor, the ECU processes the specified values that are pro-
grammed for each sensor in order to provide the engine with alternate operating instructions that enable the
engine to continue to operate or stop operating, depending on the conditions.
Self-Diagnostic-Function table

Fault code 

No.

Item

Symptom

Able/unable 

to start

Able/unable 

to drive

11

Cylinder identification sensor

No normal signals are received from the 
cylinder identification sensor.

Unable

Able

12

Crankshaft position sensor

No normal signals are received from the 
crankshaft position sensor.

Unable

Unable

13

Cylinder-#1 intake air pressure sensor 
(open or short circuit)

Cylinder-#1 intake air pressure sensor: 
open or short circuit detected.

Able

Able

14

Cylinder-#1 intake air pressure sensor 
(hose line)

Cylinder-#1 intake air pressure sensor: 
hose system malfunction (clogged or 
detached hose).

Able

Able

15

Throttle position sensor (open or short cir-
cuit)

Throttle position sensor: open or short cir-
cuit detected.

Able

Able

16

Throttle position sensor (stuck)

Stuck throttle position sensor detected.

Able

Able

21

Coolant temperature sensor

Coolant temperature sensor: open or short 
circuit detected.

Able

Able

22

Intake air temperature sensor

Intake air temperature sensor: open or 
short circuit detected.

Able

Able

25

Cylinder-#2 intake air pressure sensor 
(open or short circuit)

Cylinder-#2 intake air pressure sensor: 
open or short circuit detected.

Able

Able

26

Cylinder-#2 intake air pressure sensor 
(hose line)

Cylinder-#2 intake air pressure sensor: 
hose system malfunction (clogged or 
detached hose).

Able

Able

30

Oil pressure dropped

Engine stops when an oil pressure drop is 
detected.

Unable

Unable

33

Cylinder-#1 ignition coil (faulty ignition)

Open circuit detected in the primary lead of 
the cylinder-#1 ignition coil.

Able 

(depending 

on the num-

ber of faulty 

cylinders)

Able 

(depending 

on the num-

ber of faulty 

cylinders)

7-5

FI

FUEL INJECTION SYSTEM

Communication error with the meter

34

Cylinder-#2 ignition coil (faulty ignition)

Open circuit detected in the primary lead of 
the cylinder-#2 ignition coil.

Able 

(depending 

on the num-

ber of faulty 

cylinders)

Able 

(depending 

on the num-

ber of faulty 

cylinders)

42

Speed sensor

No normal signals are received from the 
speed sensor.

Able

Able

43

Fuel system voltage (monitoring voltage)

ECU is unable to monitor the battery volt-
age (an open or short circuit in the line to 
the ECU).

Able

Able

44

Error in writing the amount of CO adjust-
ment on EEPROM

Error is detected while reading or writing on 
EEPROM (CO adjustment value).

Able

Able

46

Vehicle system power supply (monitoring 
voltage)

Power supply to the fuel injection system is 
not normal.

Able

Able

50

ECU internal malfunction (memory check 
error)

Faulty ECU memory. (When this malfunc-
tion is detected in the ECU, the fault code 
number might not appear on the meter.)

Unable

Unable

65

Knock sensor

Knock sensor: open or short circuit 
detected.

Able

Able

81

Grip warmer

Grip warmer: open or short circuit detected.

Able

Able

83

Thumb warmer

Thumb warmer: short circuit detected.

Able

Able

84

T.O.R.S.

Conditions requiring T.O.R.S. operation are 
detected.

Able

Unable

85

Oil pressure switch

Oil pressure switch: open circuit detected.

Able

Able

88

Drive position switch

Drive position switch: short circuit detected.

Able

Able

Reverse position switch

Reverse position switch: short circuit 
detected.

Fault code 

No.

Item

Symptom

Able/unable 

to start

Able/unable 

to drive

Er-1

ECU internal malfunction (output signal 
error)

No signals are received from the ECU.

Unable

Unable

Er-2

ECU internal malfunction (output signal 
error)

No signals are received from the ECU 
within the specified duration.

Unable

Unable

Er-3

ECU internal malfunction (output signal 
error)

Data from the ECU cannot be received cor-
rectly.

Unable

Unable

Er-4

ECU internal malfunction (input signal 
error)

Non-registered data has been received 
from the meter.

Unable

Unable

Fault code 

No.

Item

Symptom

Able/unable 

to start

Able/unable 

to drive

 

 

 

 

 

 

 

Content   ..  62  63  64  65   ..