Ford Mustang 2005 Workshop Manual page 17

2005 Mustang Workshop Manual
Is any voltage present?
B16 CHECK THE FUEL LEVEL SENSOR CIRCUITRY FOR AN OPEN
Ignition OFF.
Measure the resistance between the SJB C2280c-31, circuit 1357 (LB/YE), harness side; and
between the SJB C2280c-43, circuit 29 (YE/WH), harness side.
Is the resistance less than 5 ohms?
B17 CHECK CIRCUIT 29 (YE/WH) FOR AN OPEN
Measure the resistance between the SJB C2280c-43, circuit 29 (YE/WH), harness side and the fuel
level sensor C434-4, circuit 29 (YE/WH), harness side.
Is the resistance less than 5 ohms?
B18 INSPECT THE FUEL TANK
Check the fuel tank for any damage or deformation.
Is the fuel tank OK?
B19 INSPECT THE FUEL PUMP MODULE, FUEL LEVEL SENSOR AND FUEL TRANSFER TUBES
Remove the fuel pump module and fuel level sensor. Refer to
Inspect the fuel transfer tube, connections, fuel pump module and fuel level sensor for any damage or
deformation.
Are the fuel transfer tube, connections, fuel pump module and the fuel level sensor OK?
B20 CHECK THE FUEL PUMP MODULE AND FUEL LEVEL SENSOR RESISTANCE READINGS
NOTE: The fuel pump module and fuel level sensor resistance varies from 15 ± 2 ohms when empty
(E) to 160 ± 4 ohms when full (F).
For the fuel pump module, measure the resistance between the fuel pump module C433 pin 2,
component side and the fuel pump module C433 pin 4, component side.
For the fuel level sensor, measure the resistance between the fuel level sensor C434 pin 4,
component side and the fuel level sensor C434 pin 2, component side while slowly moving the float
arm from the bottom to the top of travel.
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No
REPAIR circuit 1357 (LB/YE) for a short to voltage. CLEAR the
DTCs. REPEAT the self-test.
Yes
REMOVE the jumper wire. GO to B22.
No
REMOVE the jumper wire. GO to B17.
Yes
REPAIR circuit 1357 (LB/YE) for an open. CLEAR the DTCs.
REPEAT the self-test.
No
REPAIR circuit 29 (YE/WH) for an open. CLEAR the DTCs.
REPEAT the self-test.
Yes
GO to B19.
No
VERIFY that the fuel pump module or fuel level sensor are not
damaged. INSTALL a new fuel tank. REFER to
CLEAR the DTCs. REPEAT the self-test.
Section 310-01. Yes
GO to B20.
No
REPAIR or INSTALL a new fuel tank (for fuel transfer tube
concerns), fuel pump module or fuel level sensor as necessary.
REFER to
test.
Yes
INSTALL a new fuel tank. REFER to
DTCs. REPEAT the self-test.
No
For the fuel pump module, GO to B21.
For the fuel level sensor, INSTALL a new fuel level sensor.
REFER to
test.
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Section
Section 310-01. CLEAR the DTCs. REPEAT the self-
Section 310-01. CLEAR the
Section 310-01. CLEAR the DTCs. REPEAT the self-
11/14/2009
310-01.