E 450 V8-5.4L (2009)
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Is the resistance less than 5 ohms?
Yes
GO to I14.
No
CONNECT all modules. CONNECT the negative battery cable. GO to I21.
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I14 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER
WITH THE IC DISCONNECTED
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Disconnect: IC C220.
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Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness
side.
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Is the resistance less than 5 ohms?
Yes
REPAIR the circuit. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
CONNECT all modules. CONNECT the negative battery cable. GO to I22.
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I15 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO
GROUND WITH THE SJB DISCONNECTED
-
Disconnect: Smart Junction Box (SJB) C2280b.
-
Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit
VDB07 (VT/OG), harness side and ground.
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Are the resistances greater than 1,000 ohms?
Yes
CONNECT all modules. CONNECT the negative battery cable. GO to I19.
No
