Yamaha TMAX 2020 Service Manual page 607

1 2
R
Br/L
R L/Y
Is resistance 0 ?
YES
Go to "Short circuit check".
NO
a. Replace the wire harness.
b. Push the ON/start switch.
c. Operate the rear brake lever, and then check the condition of the DTC using the malfunction
mode of the YDT.
Is it in the "Recovered" condition?
YES
Go to step 11, and complete the service.
NO
Go to "Short circuit check".
• Short circuit check
TIP
Disconnect the ECU related connectors before checking.
Refer to "PARTS CONNECTED TO THE ECU" on page 9-3.
Ground short circuit check "A"
Between ignition system relay coupler "1" and
ground
Between rear brake light switch coupler "3" and
ground
Between brake light relay coupler "4" and
ground
Lines short circuit check "B"
Ignition system relay coupler "1"
Rear brake light switch coupler "3"
Brake light relay coupler "4"
ECU coupler "5"
3 4
Br
G/Y Y/B
Lg/B Y/W
Lg/B G/Y B
brown/blue–ground
green/yellow–ground
light green/black–ground
light green/black–ground
brown/blue–any other coupler terminal
green/yellow–any other coupler terminal
light green/black–any other coupler terminal
light green/black–any other coupler terminal
light green/black–any other coupler terminal
9-133
5
Lg/W Y/L W/G O/W Lg/L P Y/G
Lg/L Gy/G
R/G G/L Br/W
Lg L/W Lg/B G/R
P056C
L B/Y
B/L
W/Y W/G