Yamaha TMAX XP530E-A 2017 Service Manual page 518

Fault code No.
Item
B-5 Connection of wire harness
ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
B-6 Check the fuse. (signaling sys-
tem fuse, brake light fuse)
B-7 Wire harness continuity.
B-8 Defective rear brake light switch. Replace the rear brake light
B-9 Malfunction in ECU.
CRUISE CONTROL SYSTEM (for XP530D-A)
P056C
A Front brake light switch: open or short circuit is detected.
B Rear brake light switch: open or short circuit is detected.
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
Abnormality  Replace the
fuse. (signaling system fuse,
brake light fuse)
Open or short circuit  Replace
the wire harness.
Between ignition system relay
coupler and fuse box.
brown/blue–brown/blue
Between fuse box and rear
brake light switch.
brown–green/yellow
Between rear brake light switch
coupler and brake light relay
coupler.
light green/black–light
green/black
Between brake light relay cou-
pler and ECU coupler.
light green/black–light
green/black
Between brake light relay cou-
pler and battery.
black–black
switch.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-230.
8-127
Push the ON/start switch.
Operate the rear brake lever,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item B-10 and finish the ser-
vice.
Condition is "Detected"  Go to
item B-6.
Push the ON/start switch.
Operate the rear brake lever,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item B-10 and finish the ser-
vice.
Condition is "Detected"  Go to
item B-7.
Push the ON/start switch.
Operate the rear brake lever,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item B-10 and finish the ser-
vice.
Condition is "Detected"  Go to
item B-8.
Push the ON/start switch.
Operate the rear brake lever,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item B-10 and finish the ser-
vice.
Condition is "Detected"  Go to
item B-9.