9-113
P0480
3. Wire harness continuity.
• Disconnect the radiator fan motor relay coupler, ECU coupler and ignition fuse.
• Open circuit check
• Short circuit check
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”
Between radiator fan motor relay coupler “1”
and ignition fuse holder “3”
red/white–red/white
Between radiator fan motor relay coupler “1”
and ECU coupler “2”
yellow/red–yellow/red
Is resistance 0 ?
YES
Go to “Short circuit check”.
NO
a. Replace the wire harness.
b. Push the ON/start switch, 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”.
Between radiator fan motor relay coupler “1”
and ground
yellow/red–ground
red/white–ground
Radiator fan motor relay coupler “1”
yellow/red–any other coupler terminal
red/white–any other coupler terminal
ECU coupler “2” yellow/red–any other coupler terminal
Br/B
L
R/W
Y/R
1
O
B/GY/R
B
R/BG/B
Y/W
B
Y/RR/L
BB
R/LL/Y
Y/W
R
3 2
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