Mustang V8-4.6L (2009)
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L2 CHECK THE DLC VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Measure the voltage between the DLC C251-16, circuit 1047 (LG/RD), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to L3.
No
VERIFY the Smart Junction Box (SJB) fuse 8 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to IDENTIFY the
possible causes of the short circuit. REPEAT the network test with the scan tool.
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L3 CHECK THE DLC GROUND CIRCUITS FOR AN OPEN
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Disconnect: Negative Battery Cable.
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Measure the resistance between the DLC C251-4, circuit 1205 (BK), harness side and ground; and between the DLC C251-5, circuit 570
(BK/WH), harness side and ground.
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Are the resistances less than 5 ohms?
Yes
REPAIR the scan tool. CONNECT the negative battery cable. REPEAT the network test with the scan tool.
No
REPAIR the circuit in question. CONNECT the negative battery cable. REPEAT the network test with the scan tool.
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