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FI SYSTEM DIAGNOSIS 4-103
“C60” (P0480) COOLING FAN RELAY CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (5-3)
3) Check the cooling fan relay coupler for loose or poor contacts.
If OK, then inspection the cooling fan relay. (7-7)
Is the cooling fan relay OK?
4) After repairing the trouble, clear the DTC using SDS tool.
(4-27)
DETECTED CONDITION POSSIBLE CAUSE
Cooling fan relay signal is not input to ECM. • Cooling fan relay circuit open or short
• ECM malfunction
ECM
Side-stand
relay
Ignition
switch
Engine stop
switch
FAR
O/R
O/W
Cooling fan
motor
Cooling fan
relay
To Side-stand
switch
1
YES
• O/W and O/R wire open or shorted to ground,
or poor c connection
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO Replace the cooling fan relay with a new one.
When using the multi-circuit tester, do not storongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
ECM couplers (Harness side)
1
(Black) (Gray)