Yamaha YZF-R1 2012, Service Manual, Page: 442 / 556

FUEL INJECTION SYSTEM
8-45
D:43 Secondary injector #4 Actuates the secondary injec-
tor #4 five times at one-sec-
ond intervals.
Illuminates the engine trou-
ble warning light. Check the operating sound
of the secondary injector #4
five times.
ECA1KB8801
Disconnect the fuel pump
coupler.
D:47 Steering damper solenoid Set the engine stop switch to
ON: Steering damper sole-
noid is ON.
Set the engine stop switch to
OFF: Steering damper sole-
noid is OFF.
Illuminates the engine trou-
ble warning light when the
engine stop switch is ON. Check the operating of the
steering damper.
D:48 Air induction system sole-
noid Actuates the air induction
system solenoid five times at
one-second intervals.
Illuminates the engine trou-
ble warning light. Check the operating sound
of the air induction system
solenoid five times.
D:50 Fuel pump relay Actuates the fuel pump relay
five times at one-second
intervals.
Illuminates the engine trou-
ble warning light.
(The engine trouble warning
light is OFF when the relay is
ON, and the engine trouble
warning light is ON when the
relay is OFF). Check the operating sound
of the fuel pump relay five
times.
D:51 Radiator fan motor relay Actuates the radiator fan
motor relay for five cycles of
five seconds. (ON 2 sec-
onds, OFF 3 seconds)
Illuminates the engine trou-
ble warning light. Check the operating sound
of the radiator fan motor
relay five times.
D:52 Headlight relay Actuates the headlight relay
for five cycles of five seconds.
(ON 2 seconds, OFF 3 sec-
onds)
Illuminates the engine trou-
ble warning light. Check the operating sound
of the headlight relay five
times.
Diag-
nostic
code
No.
Item Actuation Checking method