E 450 V8-5.4L (2009)
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Are the resistances greater than 1,000 ohms?
Yes
CONNECT all modules. CONNECT the negative battery cable. GO to K24.
No
For stripped chassis, GO to K22.
Otherwise, GO to K20.
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K20 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND
WITH THE RCM DISCONNECTED
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Disconnect: RCM C310b.
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Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit
VDB05 (WH), 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 K25.
No
If the vehicle is equipped with a Trailer Brake Control (TBC) module, GO to K21.
If the vehicle is not equipped with a TBC module, GO to K22.
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K21 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND
WITH THE TBC MODULE DISCONNECTED
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Disconnect: TBC Module C2142.
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Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit
VDB05 (WH), harness side and ground.
-
Are the resistances greater than 1,000 ohms?
Yes
