Ford Mustang 2005 Workshop Manual page 15

2005 Mustang Workshop Manual
For DTC B1204, measure the resistance between the SJB C2280c-44, circuit 1356 (LG/VT) (DTC
B1204), harness side and ground.
Is the resistance greater than 10,000 ohms?
B6 CHECK CIRCUITS 1356 (LG/VT) AND 1357 (LB/YE) FOR A SHORT TOGETHER
Measure the resistance between the SJB C2280c-31, circuit 1357 (LB/YE), harness side and the SJB
C2280c-44, circuit 1356 (LG/VT), harness side.
Is the resistance greater than 10,000 ohms?
B7 CHECK CIRCUITS 29 (YE/WH) AND 1357 (LB/YE) FOR A SHORT TOGETHER
Measure the resistance between the SJB C2280c-43, circuit 29 (YE/WH), harness side and the SJB
C2280c-31, circuit 1357 (LB/YE), harness side.
Is the resistance greater than 10,000 ohms?
B8 CHECK THE FUEL PUMP MODULE FOR AN OPEN
Ignition OFF.
Disconnect: Fuel Pump Module C433 (LH Side).
Connect a fused jumper wire between the fuel pump module C433-2, circuit 1357 (LB/YE), harness
side and the fuel pump module C433-4, circuit 1356 (LG/VT), harness side.
Ignition ON.
Wait one minute.
Enter the following diagnostic mode on the scan tool: Instrument Cluster Self-Test.
NOTE: Make sure to use only the instrument cluster DTCs for this step. Once the repairs are
complete, clear the instrument cluster DTCs.
NOTE: It is normal for DTC B1202 to be present during this step and should be ignored.
Clear the instrument cluster DTCs. Repeat the instrument cluster self-test.
Is DTC B1204 set?
B9 CHECK THE FUEL PUMP MODULE CIRCUITRY FOR A SHORT TO VOLTAGE
Ignition OFF.
Disconnect: SJB C2280c.
Ignition ON.
Measure the voltage between the SJB C2280c-44, circuit 1356 (LG/VT), harness side and ground.
Is any voltage present?
B10 CHECK CIRCUIT 1356 (LG/VT) FOR A SHORT TO VOLTAGE
Measure the voltage between the SJB C2280c-44, circuit 1356 (LG/VT), harness side and ground.
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Yes
GO to B22.
No
REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test.
Yes
GO to B22.
No
REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test.
Yes
REMOVE the jumper wire. GO to B21.
No
LEAVE the jumper wire connected. GO to B9.
Yes
REMOVE the jumper wire. GO to B10.
No
LEAVE the jumper wire connected. GO to B11.
Yes
REPAIR circuit 1356 (LG/VT) for a short to voltage. CLEAR the
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11/14/2009