Yamaha YZF-R1, Service Manual

Page: 622 / 808

P0152
9-125
4. Wire harness continuity.
• Disconnect the O
2
sensor 2 coupler “1” and ECU coupler “2”.
• Open circuit check
• Short circuit check
TIP
Disconnect the ECU related connectors before checking.
Refer to “PARTS CONNECTED TO THE ECU” on page 9-3.
Ground short circuit check “A”
Lines short circuit check “B”
YES
→
Go to step 4.
NO
a. Connect the coupler securely or 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 4.
Between O
2
sensor 2 coupler and ECU coupler
black/blue–black/blue
gray/yellow–gray/yellow
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”.
Between O
2
sensor 2 coupler “1” and ground
gray/yellow–ground
O
2
sensor 2 coupler
black/blue–any other coupler terminal
gray/yellow–any other coupler terminal
L / R Gy L / B L P / W P V
W W / B L / W B / Y B / L Gy / G Br / W
Gy / B W / L L / W L / Y Gy / Y G / W G
2
1