Yamaha STAR XVS95CE 2DX1 2014 Service Manual page 416

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Diagnostic
code No.
31 Rear cylinder ignition coil
36 Front cylinder injector
37 Rear cylinder injector
50 Relay unit
52 Headlight relay
54 ISC valve
Item
Actuates the rear cylinder
ignition coil five times at
one-second intervals.
Illuminates the engine
trouble warning light and
Yamaha diagnostic tool
warning light.
Actuates the front cylinder
injector five times at one-
second intervals.
Illuminates the engine
trouble warning light and
Yamaha diagnostic tool
warning light.
Actuates the rear cylinder
injector five times at one-
second intervals.
Illuminates the engine
trouble warning light and
Yamaha diagnostic tool
warning light.
Actuates the relay unit five
times at one-second inter-
vals.
Illuminates the engine
trouble warning light and
Yamaha diagnostic tool
warning light.
(The engine trouble warn-
ing light and Yamaha diag-
nostic tool warning light
are OFF when the relay is
ON, and the engine trou-
ble warning light and
Yamaha diagnostic tool
warning light are ON when
the relay is OFF.)
Actuates the headlight re-
lay five times at five-sec-
ond intervals. Illuminates
the engine trouble warning
light and Yamaha diagnos-
tic tool warning light.
Fully closes the ISC valve,
and then opens the valve.
This operation is per-
formed 3 times and takes
approximately 4 seconds
each time. The engine
trouble warning light
comes on during the oper-
ation.
8-9
Actuation
Check that a spark is gen-
erated five times.
• Connect an ignition
checker.
Check that the front cylin-
der injector is actuated
five times by listening for
the operating sound.
Check that the rear cylin-
der injector is actuated
five times by listening for
the operating sound.
Check that the relay unit is
actuated five times by lis-
tening for the operating
sound.
Check that the headlight
relay is actuated five times
by listening for the operat-
ing sound.
The ISC unit vibrates
when the ISC valve oper-
ates.
Procedure