Fusion FWD L4-2.5L Hybrid (2010)
-
Does the DC/DC voltage match battery voltage?
Yes
GO to H5.
No
GO to H4.
-------------------------------------------------
H4 MEASURE VOLTAGE DROP OF DC/DC B+ CIRCUIT
-
Measure the voltage between DC/DC C1457B, circuit SDC02 (RD), harness side and the positive battery terminal.
-
Is the voltage drop less than 0.5 volt?
Yes
REPAIR DC/DC B- circuit GD108 (BK/VT) or INSTALL a new cable, if necessary. CLEAR the DTC. REPEAT the self-test. TEST the system for
normal operation.
No
REPAIR DC/DC B+ circuit SDC02 (RD) or INSTALL a new cable, if necessary. CLEAR the DTC. REPEAT the self-test. TEST the system for normal
operation.
-------------------------------------------------
H5 CLEAR DTCs AND CARRY OUT SELF-TEST OF THE DC/DC
-
Connect the scan tool.
-
Using the scan tool, clear the DC/DC DTCs.
-
Enter the following diagnostic mode on the scan tool: Self Test - DC/DC.
-
Is DTC U3003:16 reported?
Yes
INSTALL a new DC/DC. REFER to Hybrid Drive Systems. CLEAR the DTC. REPEAT the self-test. TEST the system for normal operation.
No
