Ranger 4WD V6-4.0L (2009)
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Are DLC pins 6 and 14 OK?
Yes
GO to H2.
No
REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
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H2 CHECK THE HS-CAN TERMINATION RESISTANCE
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness
side.
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Is the resistance between 54 and 66 ohms?
Yes
GO to H3.
No
Go To Pinpoint Test I. See: Pinpoint Test I: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
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H3 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND
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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 the negative battery cable. GO to H4.
No
CONNECT the negative battery cable. Go To Pinpoint Test I. See: Pinpoint Test I: No High Speed Controller Area Network (HS-CAN)
Communication, All Modules Are Not Responding
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H4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE