Yamaha Vector RS90GTZ Service Manual Download

Page: 342 / 504

7-15

Diagnostic mode table

Switch the meter display from the regular mode to the diagnostic mode. To switch the display, refer
to “DIAGNOSTIC MODE”.

TIP

• Check the intake air temperature and coolant temperature as close as possible to the intake air

temperature sensor and the coolant temperature sensor respectively.

• If it is not possible to check the intake air temperature, use the ambient temperature as reference.

Diagnostic

code No.

Item

Description of action

Checking method

or meter display

d:01

Throttle angle

Displays the throttle angle.
• Check with throttle fully closed.
• Check with throttle fully open.

0 ~ 125 degrees
• Fully closed position (15 ~

18)

• Fully open position (94 ~

100)

d:03

Intake air pressure
sensor 1 (atmospheric
pressure and intake air
pressure)

Displays the intake air pressure for cylinders #1,
#2, and #3.
• Check the intake manifold pressure.
• Push the starter switch and check the change

in the intake air pressure.

• Not cranking: atmospheric

pressure

• Cranking: intake air pres-

sure decreases to less than
the atmospheric pressure.

d:04

Intake air pressure
sensor 2 (atmospheric
pressure and intake air
pressure)

Displays the intake air pressure for cylinder #1.
• Check the intake manifold pressure.
• Push the starter switch and check the change

in the intake air pressure.

• Not cranking: atmospheric

pressure

• Cranking: intake air pres-

sure decreases to less than
the atmospheric pressure.

d:05

Intake air temperature

Displays the intake air temperature.
• Check the temperature in the intake manifold.

Compare it to the value dis-
played on the meter. (Mini-
mum displayed value: –30
[°C])

d:06

Coolant temperature

Displays the coolant temperature.
• Check the temperature of the coolant.

Compare it to the value dis-
played on the meter. (Mini-
mum displayed value: –30
[°C])

d:07

Snowmobile speed
pulse

Displays the cumulative number of snowmobile
pulses that are generated when the track is
spun.

(0 ~ 999; resets to 0 after 999)
OK if the numbers appear on
the meter.

d:09

Fuel system voltage
(battery voltage)

Displays the fuel system voltage (battery volt-
age).

0 ~ 18.7 V
Normally, approximately 12.0 V

d:24

Throttle switch

Displays that the switch is on or off.
• Check the throttle switch.

Throttle open: on
Throttle closed: off

d:27

Thumb warmer opera-
tion

If the grip warmer side of the grip/thumb warmer
adjustment switch is pushed, actuates the thumb
warmer and displays the self-diagnosis warning
indicator for 120 seconds.

After pushing the switch,
check that the warmer
becomes warm.

d:30

Cylinder-#1 ignition coil If the grip warmer side of the grip/thumb warmer

adjustment switch is pushed, actuates the cylin-
der-#1 ignition coil and displays the self-diagno-
sis warning indicator (five times at one-second
intervals).

After pushing the switch,
check that a spark is produced
five times.

d:31

Cylinder-#2 ignition coil If the grip warmer side of the grip/thumb warmer

adjustment switch is pushed, actuates the cylin-
der-#2 ignition coil and displays the self-diagno-
sis warning indicator (five times at one-second
intervals).

After pushing the switch,
check that a spark is produced
five times.

FUEL INJECTION SYSTEM