E 450 V8-5.4L (2009)
No
REPAIR the RCM case ground as necessary. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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D4 CHECK THE HS-CAN CIRCUITS BETWEEN THE RCM AND THE DLC FOR AN OPEN
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Measure the resistance between the RCM C310b-10, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU),
harness side.
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Measure the resistance between the RCM C310b-9, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side.
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Are the resistances less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to D5.
No
REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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D5 CHECK FOR CORRECT RCM OPERATION
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Disconnect all the RCM connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the RCM connectors and make sure they seat correctly.
-
Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new RCM. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the
network test with the scan tool.
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Pinpoint Test E: The Trailer Brake Control (TBC) Module Does Not Respond To The Scan Tool
Communications Network