Yamaha XSR 900 2022 Service Manual page 554

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 injector #3 coupler "1" and ground
Lines short circuit check "B"
Injector #3 coupler "1"
ECU coupler "2"
Relay unit coupler "3"
A
Is resistance ∞ Ω?
YES
→ Go to step 5.
NO
a. Replace the wire harness.
b. Execute the diagnostic mode. (Code 38)
Is it hear operating sound?
YES
→ Go to step 6.
NO
→ Go to step 5.
5. Malfunction in ECU.
• Replace the ECU, and complete the service.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
6. Delete the DTC and check that the MIL goes off.
• Start the engine and let it idle for approximately 5 seconds.
• Confirm that the DTC has a condition of "Recovered" using the malfunction mode of the YDT, and
then delete the DTC.
1
L/B R/L
blue/black–ground
red/blue–ground
blue/black–any other coupler terminal
red/blue–any other coupler terminal
blue/black–any other coupler terminal
red–any other coupler terminal
B
1
L/B R/L
3
W
Br R
W L/W R L/B L Sb
9-148
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
L/W R
B Sb/W
P0203