Suzuki LT-R450K6 Instruction Manual page 189

FI SYSTEM DIAGNOSIS 4.59
"C60" (P0480) COOLING FAN RELAY CIRCUIT MALFUNCTION
ECM
Cooling fan Ignition
relay switch
Y / 8
-
o m -
Cooling
fan
T
motor
I
A
DETECTED CONDITION
Cooling fan relay signal is not input to ECM.
INSPECTION
Step 1
1)
Turn the ignition switch OFF.
2) Remove the front fender. ( P 7 - 6 )
.
3) Check the cooling fan relay coupler for loose or poor contacts.
If OK, then check the cooling fan relay. (-6-10)
'b,
POSSIBLE CAUSE
Cooling fan relay circuit open or short
ECM malfunction
Is the cooling fan relay OK?
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.
YES
NO
ECM coupler (Harness
side)
1
OIY and Y/B wire open or shorted to ground, or
poor 4 , 3 3 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.
Replace the cooling fan relay with a new one.
4) After repairing the trouble, clear the DTC using SDS tool.
( W 4 - 2 5 )