Yamaha MT-09 2021 - Page 552

9-122
P0117, P0118
3. Wire harness continuity.
• Disconnect the coolant temperature sensor coupler “1” and ECU coupler “3”.
• Remove the joint coupler cap “2”.
• Open circuit check
• Short circuit check
TIP
Disconnect the ECU related connectors before checking.
Refer to “PARTS CONNECTED TO THE ECU” on page 9-4.
Between coolant temperature sensor coupler
“1” and ECU coupler “3”
[P0117, P0118] green/white–green/white
Between coolant temperature sensor coupler
“1” and joint coupler “2”
[P0118] black–black
Between joint coupler “2” and ECU coupler “3” [P0118] black/blue–black/blue
Gy LLVP P/WO/WY/LL/B
B/LB/LBr/WGy/GBr/LB/YL/W
W/YW/GG/WG/WLg/BL/WL/Y
L/W WW L/W BB L/B L/B Y/B Y/B
L/R L/R L/RL/RB/L
B B/L BBBBB
B G/W
Gy
LLVP P/WY/LL/B
B/LB/LBr/WGy/GB/YL/W
W/YW/GG/WG/WL/WL/Y
3
**
3
*
2
1
*. MTN890
**. MTN890D
Is resistance 0 Ω?
YES
→ Go to step “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 7, and complete the service.
NO
→ Go to step “Short circuit check”.