F 150 4WD V8-4.6L VIN 8 (2010)
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G4 CHECK FOR CORRECT TBC MODULE OPERATION
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Disconnect the TBC module connector.
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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 the TBC module connector and make sure it seats correctly.
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Verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new TBC module. REFER to Trailer Brake Control Module. 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.
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Pinpoint Test H: The Transmission Control Module (TCM) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test H: The Transmission Control Module (TCM) Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 30, Transmission Controls - 6HP26 for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The Transmission Control Module (TCM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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TCM
PINPOINT TEST H: THE TCM DOES NOT RESPOND TO THE SCAN TOOL
NOTICE: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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H1 CHECK THE TCM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
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Ignition OFF.
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Disconnect: TCM C1575.
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Ignition ON.
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Measure the voltage between the TCM C1575-9, circuit CBB53 (GY/BN), harness side and ground; and between the TCM C1575-14, circuit