Suzuki GSX-R 1000 Service Manual: DTC “c60” (p0480): cooling fan relay circuit malfunction

Detected condition

Possible cause

• Cooling fan relay circuit open or short.
• Ecm malfunction.

when using the multi-circuit tester, do not strongly touch the terminal of the ecm coupler with a needle pointed tester probe to prevent terminal damage.

after repairing the trouble, clear the dtc using sds tool. Refer to “use of sds diagnosis reset procedures” .

Step

Action

Yes

No

1

1. Turn the ignition switch off.
2.  Remove the frame covers. Refer to “exterior parts removal and installation” in section 9d .
3.  Check the cooling fan relay (1) coupler for loose or poor contacts.

   If ok, then inspection the cooling fan relay. Refer to “cooling fan inspection” in section 1f .

Is the cooling fan relay ok?

• O/w and g/r wire open or shorted to ground, or poor “42” connection.
• If wire and connection are ok, intermittent trouble 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. Refer to “ecm removal and installation” in section 1c .

the cooling fan relay and cooling fan motor inspection is operational at any engine coolant temperature until reaching 100 °c (212 °f). In a hot engine condition with the intake air temperature exceeding 40 °c (104 °f), however, the engine coolant temperature at which the inspection is operational will be restricted to 95 °c (203 °f).

•  this inspection should be begun from when the engine coolant temperature is below 50 °c (122 °f).

  Check that the cooling fan relay operates for a few seconds as the engine coolant temperature reaches each temp. Of 50 °c (122 °f), 70 °c (158 °f), 90 °c (194 °f) and 110 °c (230 °f)/above 4 000 r/ min. It is cooling fan motor malfunction or its circuit failure when the motor would not run even if the relay turns on.

•  There is a tolerance of operating temperature of cooling fan relay.