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Home >> Infiniti >> 2012 >> G37 Convertible V6-3.7L (VQ37VHR) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Main Line Between AV and DLC Circuit >> CAN
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CAN




MAIN LINE BETWEEN AV AND DLC CIRCUIT

Diagnosis Procedure


1. CHECK CONNECTOR

1.Turn the ignition switch OFF.
2.Disconnect the battery cable from the negative terminal.
3.Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
-Harness connector M18
-Harness connector M17
Is the inspection result normal?
YES- GO TO 2.
NO- Repair the terminal and connector.

2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the following harness connectors.
-AV control unit
-Harness connectors M18 and M17
2.Check the continuity between the AV control unit harness connector and the harness connector.
-Models with navigation system





-Models without navigation system





Is the inspection result normal?
YES- GO TO 3.
NO- Repair the main line between the AV control unit and the harness connector M18.

3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.





Is the inspection result normal?
YES (Present error)-Check CAN system type decision again.
YES (Past error)-Error was detected in the main line between the AV control unit and the data link connector.
NO- Repair the main line between the harness connector M17 and the data link connector.
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