© 2002 Cannondale Corporation - All Rights Reserved
46
Electrical_EFI Service Manual.fm
COOLING FAN (ATV ONLY)
Fault
Possible Cause
Action
Cooling fan short fault,
Cooling fan open fault
Damaged cooling fan or
ECU, harness short circuit,
fan connector disconnected or
damaged
Component test the cooling fan. Refer to
"Cooling Fan (ATV Only)" starting o n
page 46.
Component test the coolant sensor.
Refer to "Coolant Sensor" starting on
page 53.
Check that cooling fan harness connector
is secure.
Verify good main fuse.
Disconnect ECU and go to Test 1.
Pinpoint Tests
Test
Result
Action
1. Check wire and terminal
integrity:
- P2 G1, P2 G2
OK
Disconnect cooling fan and go to Test 2.
Faulty
Locate and correct wiring fault and go to
Test 5.
2. Check wire for short circuit:
- P2 G1 to ground
- P2 G2 to ground
OK
Go to Test 3.
Short circuit
Locate and correct wire fault and go to
Test 5.
3 . C h e c k w i r e c o n t i n u i t y
between:
- P2 G1 and CN22 pin B
OK
Go to Test 4.
Open circuit
Correct wiring fault, go to Test 5.
4. Verify 12V(+) at CN22 pin A
OK
Go to Test 5.
None
Locate and correct wiring fault, go to Test
6.
5. Reconnect the cooling fan
and ECU and verify proper fan
operation (on at 85°C, off at
8 0 ° C c o o l a n t te m p e ra t u r e ).
Verify correct airflow.
OK
Done
Faulty
Replace ECU and go to Test 7.
7. Run engine and check for
presence of fault.
OK
Done
Fault still present
Contact Cannondale Dealer Service.
Circuit Diagram
