Yamaha TMAX 2020 Service Manual page 649

EAS20663
16_ABS
EAS33285
TROUBLESHOOTING
Item
Rear wheel sensor (open or short circuit)
Procedure
1. Defective coupler between the rear wheel sensor and the hydraulic unit assembly
• Check the coupler for any pins that may be pulled out.
• Check the locking condition of the coupler.
TIP
Push the OFF/LOCK switch before disconnecting or connecting a coupler.
Is check result OK?
YES
 Go to step 2.
NO
 If there is a malfunction, repair it and connect the coupler securely.
2. Wire harness continuity
• Disconnect the ABS ECU coupler and rear wheel sensor coupler.
• Open circuit check
Between ABS ECU coupler "1" and rear wheel
sensor coupler "2"
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 "1" and ground
1
W B B W W/Y G/R W/G
R/W B
R/L
B/G
Lg Lg
G/Y Br/W Lg/L Lg/W B/L
9-175
white–white
black–black
2
B W
white–ground
black–ground
16_ABS