Yamaha YZF-R1 2020 Service Manual page 749

Between atmospheric pressure sensor coupler and
ECU coupler
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 7, 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 atmospheric pressure sensor coupler "1"
and ground
Lines short circuit check "B"
Atmospheric pressure sensor coupler
ECU coupler "2"
A
1
B/L P L
2
1
L/B Y/L
B/L P L
L/W B/Y
L/Y L/W
9-254
blue–blue
pink–pink
black/blue–black/blue
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
blue–ground
pink–ground
blue–any other coupler terminal
pink–any other coupler terminal
black/blue–any other coupler terminal
blue–any other coupler terminal
pink–any other coupler terminal
black/blue–any other coupler terminal
B
1 2
B/L P L
L/B
L/W
P2228, P2229
Y/L P/W P V L L/R
B/Y Gy/G Br/W B/L W
L/Y L/W Gy/Y G/W G Gy/B W/L
Gy
W/B