*BOTH DIAGNOSTIC CAN C (+) AND DIAGNOSTIC CAN C (-) CIRCUITS OPEN
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(D72) DIAGNOSTIC CAN C (+) CIRCUIT OPEN
|
(D71) DIAGNOSTIC CAN C (-) CIRCUIT OPEN
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TOTALLY INTEGRATED POWER MODULE
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Diagnostic Test
1.
CHECK THE STATUS OF THE ERROR MESSAGE
NOTE:
Ensure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed.
NOTE:
Ensure the scan tool is updated to the latest software.
With the scan tool, record the error message.
Disconnect the scan tool from the DLC.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
Does the scan tool display this same error message?
Yes
No
-
The conditions that caused this error message to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2.
(D72) DIAGNOSTIC CAN C (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the TIPM C7 harness connector.
Disconnect the scan tool from the DLC.
NOTE:
Check the connectors at both the DLC and the TIPM.
Measure the resistance of the (D72) Diagnostic CAN C (+) circuit between the TIPM C7 harness connector and the DLC.
Is the resistance below 5.0 ohms?
Yes
No
3.
(D71) DIAGNOSTIC CAN C (-) CIRCUIT OPEN
Measure the resistance of the (D71) Diagnostic CAN C (-) circuit between the TIPM C7 harness connector and the DLC.
Is the resistance below 5.0 ohms?
Yes
No