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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (LAN System (Can System)) >> DTC/Circuit Diagnosis >> Main Line Between BSW And Abs Circuit >> Diagnosis Procedure >> Diagnostic Test
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Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.

  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 B1
      • Harness connector M7
      • Harness connector M6
      • Harness connector E106

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair the terminal and connector.

  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    1. Disconnect the following harness connectors.
      • BSW control module
      • Harness connectors B1 and M7
    2. Check the continuity between the BSW control module harness connector and the harness connector.
      BSW control module harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      B50 14 B1 36 Existed
      15 37 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair the main line between the BSW control module and the harness connector B1.

  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    1. Disconnect the harness connectors M6 and E106.
    2. Check the continuity between the harness connectors.
      Harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      M7 36 M6 85 Existed
      37 86 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair the main line between the harness connectors M7 and M6.

  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    1. Disconnect the connector of ABS actuator and electric unit (control unit).
    2. Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector.
      Harness connector ABS actuator and electric unit (control unit)
      harness connector      		 Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      E106 85 E41 35 Existed
      86 14 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 BSW control module and the ABS actuator and electric unit (control unit).

    NO 

    Repair the main line between the harness connector E106 and the ABS actuator and electric unit (control unit).

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