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Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (EV Control System) >> DTC/Circuit Diagnosis >> DTC P0AA2: System Main Relay + >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS
    1. Turn power switch OFF.
    2. Disconnect VCM harness connector and Li-ion battery harness connector.
    3. Check continuity between VCM harness connector and Li-ion battery harness connector.
    CONTINUITY REFERENCE CHART

    + - Continuity
    VCM Li-ion battery
    Connector terminal Connector terminal
    E63 107 B24 17 Existed

    Is the inspection result normal? 

    YES: Go to 2.

    NO: Repair harness or connector.

  2. CHECK SYSTEM MAIN RLY CIRCUIT

    Check continuity between Li-ion battery connector terminals.

    CONTINUITY REFERENCE CHART

    Li-ion battery Continuity
    Terminals
    16 17 Existed

    Is the inspection result normal? 

    YES: Go to 3.

    NO: Repair or replace error-detected parts.

  3. CHECK SYSTEM MAIN RLY GROUND CIRCUIT

    Check continuity between Li-ion battery harness connector and ground.

    CONTINUITY REFERENCE CHART

    + - Continuity
    Li-ion battery
    Connector terminal
    16 Ground Ground Existed

    Is the inspection result normal? 

    YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

    NO: Repair or replace error-detected parts.

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