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Home >> Infiniti >> 2013 >> QX56 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (LAN System (Can)) >> DTC/Circuit Diagnosis >> Main Line Between APA And Lane Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Disconnect the following harness connectors.
      • ADAS control unit
      • Harness connectors M151 and M150
      • Harness connectors M110 and R7
    4. Check the continuity between the harness connectors.
      Harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      M150 11 M110 13 Existed
      10 2 Existed

      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 accelerator pedal actuator and the lane camera unit.

      NO: Replace the PCB harness.