F 150 4WD V8-4.6L VIN 8 (2010)
CONNECT the negative battery cable. GO to Y33.
No
If the vehicle is equipped with a 4X4 control module, GO to Y24.
If the vehicle is not equipped with a 4X4 control module, GO to Y25.
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Y24 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE 4X4 CONTROL MODULE
DISCONNECTED
-
Disconnect: 4X4 Control Module C2173a.
-
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
CONNECT the negative battery cable. GO to Y34.
No
GO to Y25.
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Y25 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE RCM DISCONNECTED
-
Disconnect: RCM C310b.
-
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
CONNECT the negative battery cable. GO to Y35.
No
If the vehicle is equipped with a Trailer Brake Control (TBC) module, GO to Y26.
If the vehicle is not equipped with a TBC module, GO to Y27.
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Y26 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE TBC MODULE DISCONNECTED