Yamaha TMAX 2020 Service Manual page 655

Is resistance 0 ?
YES
 Go to "Short circuit check".
NO
 Replace the wire harness.
• Short circuit check
TIP
Disconnect the ABS ECU related connectors before checking.
Refer to "PARTS CONNECTED TO THE ABS ECU" on page 9-4.
Ground short circuit check "A"
Between ABS ECU coupler "3" and ground
Lines short circuit check "B"
Handlebar switch coupler (right) "1"
Handlebar switch coupler (left) "2"
ABS ECU coupler "3"
A
3
W
R/W
R/L
Lg
G/Y
Is resistance  ?
YES
 Go to step 4.
NO
 Replace the wire harness.
4. Wire harness continuity (XP560D).
• Disconnect the signaling system fuse, front brake light switch coupler, rear brake light switch cou-
pler, brake light relay coupler and ABS ECU coupler.
• Open circuit check
Between signaling system fuse holder "1" and
brake light relay coupler "4"
Between front brake light switch coupler "2" and
rear brake light switch coupler "3"
Between rear brake light switch coupler "3" and
brake light relay coupler "4"
Between brake light relay coupler "4" and ABS
ECU coupler "5"
B B W W/Y G/R W/G
B
B/G
Lg Lg/L Lg/W
Br/W B/L
green/yellow–ground
green/yellow–any other coupler terminal
green/yellow–any other coupler terminal
green/yellow–any other coupler terminal
B
1
Br G/Y
2
Br G/Y
brown–brown
green/yellow–green/yellow
light green/black–light green/black
green/yellow–green/yellow
9-181
24_ABS
3
W B B W W/Y G/R W/G
R/W B
R/L B/G
G/Y Lg Lg Br/W Lg/L Lg/W B/L