Yamaha YZF-R1S, Service Manual

Page: 356 / 457

7-12
FUEL INJECTION SYSTEM
FI
NOTE:
Diagnostic mode table
Switch the meter display from the regular mode to the diagnosis mode. To switch the display, refer to
“DIAGNOSTIC MODE”.
S
Check the intake air temperature and coolant temperature as close as possible to the intake air tem-
perature sensor and the coolant temperature sensor respectively.
S
If it is not possible to check it with an atmospheric pressure gauge, judge it by using 101.3 kPa as the
standard.
S
If it is not possible to check the intake air temperature, use the ambient temperature as reference.
Diagnostic
code
Item Description of action
Data displayed on meter
(reference value)
01
Throttle angle Displays the throttle angle.
S
Check with throttle fully closed.
S
Check with throttle fully open.
0
X
125 degrees
S
Fully closed position (15
X
18)
S
Fully open position (95
X
100)
02
Atmospheric
pressure Displays the atmospheric pressure.
* Use an atmospheric pressure gauge to check the
atmospheric pressure.
Compare it to the value
displayed on the meter.
03
Intake air pressure Displays the intake air pressure.
Engine stop switch is on.
* Generate the pressure difference by cranking the engine
with the starter, without actually starting the engine.
S
Not cranking-atmospheric
pressure
S
Cranking-intake air pressure It
changes at the value whitch is
smaller than in the atomo-
spheric pressure.
05
Intake temperature Displays the intake air temperature.
* Check the temperature in the air cleaner case. Compare it to the value
displayed on the meter.
06
Coolant temperature Displays the coolant temperature.
* Check the temperature of the coolant. Compare it to the value
displayed on the meter.
07
Vehicle speed pulse Displays the accumulation of the vehicle pulses that are
generated when the tire is spun. (0
X
999; resets to 0 after 999)
OK if the numbers appear on
the meter.
08
Lean angle cut-off
switch Displays the lean angle cut-off switch values. Upright: 0.4
X
1.4 V
Overturned: 3.7
X
4.4 V
09
Fuel system voltage
(battery voltage) Displays the fuel system voltage (battery voltage).
Engine stop switch is on. 0
X
18.7 V
Normally, approximately 12.0 V
20
Sidestand switch Displays that the switch is ON or OFF. (When the gear is in a
position other than neutral.) Stand retracted: ON
Stand extended: OFF
21
Neutral switch Displays that the switch is ON or OFF. Neutral: ON
In gear: OFF
30
Ignition coil #1 After the engine stop switch has been turned from OFF to
ON, it actuates ignition coil #1 for five times every second
and illuminates the engine trouble warning light.
* Connect an ignition checker.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.
Check that spark is generated,
5 times with the engine stop
switch ON.
31
Ignition coils #2 After the engine stop switch has been turned from OFF to
ON, it actuates ignition coil #2 for five times every second
and illuminates the engine trouble warning light.
* Connect an ignition checker.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.
Check that spark is generated,
5 times with the engine stop
switch ON.