Yamaha XSR 900 2022 Service Manual page 580

3. Wire harness continuity.
• Disconnect the radiator fan motor relay "1", ECU coupler "2" and ignition fuse "3".
• Open circuit check
Between radiator fan motor relay "1" and igni-
tion fuse holder "3"
Between radiator fan motor relay "1" and ECU
coupler "2"
3
Is resistance 0 Ω?
YES
→ Go to "Short circuit check".
NO
a. Replace the wire harness.
b. Turn the main switch to "ON", and then check the DTC using the malfunction mode of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 6, 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 9-4.
Ground short circuit check "A"
Between radiator fan motor relay "1" and ground
Lines short circuit check "B"
Radiator fan motor relay "1"
ECU coupler "2"
red–red
green/yellow–green/yellow
1
R
R/B
R G/Y
green/yellow–ground
red–ground
green/yellow–any other coupler terminal
red–any other coupler terminal
green/yellow–any other coupler terminal
9-174
P0480
2
Y/R P/B O/G Gy/R O
Lg/R L/B G/B R/B B
R/L G/Y B
R/G Y/R Y/B L/W R/L B/W B/W