Black Widow Security BW 2800 Service Manual download pdf (Page 41)

Electrical_EFI Service Manual.fm

FAULT TROUBLESHOOTING

Consult the following troubleshooting tables when

diagnosing a fault reported by the Cannondale Diag-

nostic and Maintenance Tool Fault Report window

function. Refer to "Reading Fault Codes" starting on

page 40.

SENSOR SUPPLY VOLTAGE

Fault Reported Possible Cause Action

Sensor power supply fault

ECU damaged

wiring fault

Disconnect ECU and go to Test 1.

Pinpoint Tests

Test Result Action

1. Check wire and terminal

integrity:

- P1 B3

Disconnect throttle position sensor, air

temperature sensor, and coolant sensor,

and go to Test 2.

Faulty Correct and go to Test 4.

2. Check for harness short

circuit

- P1 B3 to P1 E4

OK Reconnect ECU and go to Test 3.

Short circuit

Locate short in harness and correct and

go to Test 4.

3. With ignition ‘ON’ check

voltage at:

- P1 B3 at the back of the con-

nector locate wire (70 White)

or at CN3 pin B.

4.5 to 5.5v Go to Test 4.

Faulty Replace the ECU, go to Test 4.

4. Reconnect harness, run

engine check for presence of

fault.

OK Done

Fault still present Contact Cannondale Dealer Service.

Circuit Diagram

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 59 60

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Black Widow Security BW 2800 Service Manual Page 41