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Home >> Infiniti >> 2012 >> QX56 AWD V8-5.6L (VK56VD) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Main Line Between Lane And APA Circuit >> CAN
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CAN




MAIN LINE BETWEEN LANE AND APA 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 R1
-Harness connector M23
-Harness connector M77
-Harness connector E105
Is the inspection result normal?
YES- GO TO 2.
NO- Repair the terminal and connector.

2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the harness connectors R1 and M23.
2.Check the continuity between the harness connector terminals.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair the main line between the lane camera unit and the harness connector R1.

3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the harness connectors M77 and E105.
2.Check the continuity between the harness connectors.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair the main line between the harness connectors M23 and M77.

4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the connector of accelerator pedal actuator.
2.Check the continuity between the harness connector and the accelerator pedal actuator harness 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 lane camera unit and the accelerator pedal actuator.
NO- Repair the main line between the harness connector E105 and the accelerator pedal actuator.
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