Yamaha YZF-R1 Series Service Manual page 757

Between meter assembly coupler and joint coupler
Between joint coupler and ECU coupler
1
B/W R/W Br/W Br/B Dg Ch W/L W/Y Br/Y
R/GR/G Sb/W G/L G/Y G G/B W/B W/G W
2
*
L/W L/W L/W L/W L/W L/W L/B L/B L/B L/B L/B L/B
**
*. Joint coupler for YZF-R1
**. Joint coupler for YZF-R1M
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 condition of 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 9-3.
Ground short circuit check "A"
Between meter assembly coupler "1" and ground
Between ECU coupler "3" and ground
Lines short circuit check "B"
Meter assembly coupler
Joint coupler "2"
Lg L/W L/B G/W
G/O Y
L/W L/W L/W L/W L/W L/W L/W
L/B L/B L/B L/B L/B L/B L/B
9-260
blue/white–blue/white
blue/black–blue/black
blue/white–blue/white
blue/black–blue/black
3
L/B
L/W B/Y
L/Y L/W
blue/white–ground
blue/black–ground
blue/white–ground
blue/black–ground
blue/white–any other coupler terminal
blue/black–any other coupler terminal
blue/white–any other coupler terminal
blue/black–any other coupler terminal
U0155 or Err (FI)
P/W P V L L/R Gy
Gy/G Br/W B/L W W/B
Gy/Y G/W G Gy/B W/L