Titan 2WD V8-5.6L (VK56DE) Flex Fuel (2009)
indicate an error between DLC and TCM (line 1-a in the figure below).
NOTE:
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Diag on CAN units are not indicated on the "ECU list" when the CAN line between Diag on CAN unit and the data link connector is open.
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For a description of Diag on CAN, refer to See: Description and Operation/Diag On CAN/Description.
2. CAN DIAG SUPPORT MNTR: Check each item on "CAN DIAG SUPPORT MNTR". Draw a line on the diagnosis sheet to indicate the error
circuit.
a. Reception item of "ECM": On "TCM", "UNKWN" is indicated. This means ECM cannot receive the signal from TCM. Draw a line to indicate
an error between ECM and TCM (line 2-a in the figure below).
NOTE:
If "UNKWN" is indicated on "TRANSMIT DIAG", then the control unit cannot transmit CAN communication signal to each unit. Draw a line
between the control unit and the splice.
b. Reception item of "AFS": On "TCM", "UNKWN" is indicated. This means AFS cannot receive the signal from TCM. Draw a line to indicate
an error between AFS and TCM (line 2-b in the figure below).
c. Reception item of "AV": "UNKWN" is not indicated. This indicates normal communication between AV and its receiving units. Do not draw
any line.