Black Widow Security BW 2800 Service Manual download pdf (Page 43)

Electrical_EFI Service Manual.fm

FUEL PUMP

Reported Fault Possible Cause Action

Fuel pump short

Damaged fuel pump

(internal short circuit), harness

short circuit, damaged ECU

Component test fuel pump. Refer to

"Fuel Pump" starting on page 44.

Make sure fuel pump connector and fuel

pump terminals are secure.

Verify good main fuse.

Disconnect ECU and go Test 1.

Fuel pump open

Damaged fuel pump

(internal open circuit) harness

open circuit, harness con-

nector disconnected or ter-

minals at pump loose or dis-

connected, open circuit to

battery 12V(+).

Pinpoint Tests

Test Result Action

1. Check wire and terminal

integrity:

- P1 H1

Disconnect the fuel pump and go to Test

Faulty Locate and correct and go to Test 2.

2.Check for short circuit

between:

- P1 H1 to ground

Open Go to Test 3.

Shorted

Locate and correct wiring fault; go to Test

3. Check continuity between:

- P1 H1 and CN16 pin B

Continuity Go to Test 4.

Open

Locate and correct wiring fault; go to Test

4. Reconnect ECU, press

engine start button, wait 5

seconds and check for short

circuit between:

- CN16 B to ground

Open Go to Test 5.

Shorted Replace ECU, go to Test 7.

5. Verify 12V (+) at CN16 pin A

OK Go to Test 6.

None

Locate and correct wiring fault; go to Test

6. Reconnect the ECU and

fuel pump. Verify that pump runs

briefly (3 seconds) when engine

start button is pressed.

OK Go to Test 7.

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

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 59 60

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Black Widow Security BW 2800 Service Manual Page 43

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