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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Security Control System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC B210C: Starter Control Relay >> Diagnosis Procedure
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Diagnosis Procedure

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 SELF DIAGNOSTIC RESULT

    Check DTC in "Self Diagnostic Result" mode of "IPDM E/R" using CONSULT.

    What is the display history of DTC "B210C"?

    "CRNT" 

    GO TO STEP 3  .

    "PAST" 

    GO TO STEP 2  .

  2. CHECK BATTERY VOLTAGE

    Measure the battery voltage.

    Which is the measurement result?

    More than 12.4 V 

    GO TO STEP 5 

    Less than 12.4 V 

    Perform battery inspection. Refer to HOW TO HANDLE BATTERY .

  3. CHECK P/N POSITION SIGNAL CIRCUIT VOLTAGE

    1. Turn ignition switch ON
    2. Selector lever is in P position.
    3. Check the voltage between IPDM E/R harness connector and ground.
    (+) (-) Voltage
    (Approx.)
    IPDM E/R
    Connector Terminal
    E5 30 Ground Battery voltage

    Is the inspection result normal?

    YES 

    Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 4  .

  4. CHECK P/N POSITION SIGNAL CIRCUIT

    1. Turn ignition switch OFF
    2. Disconnect IPDM E/R connector and BCM connector.
    3. Check continuity between IPDM E/R harness connector and BCM harness connector.
      IPDM E/R BCM Continuity
      Connector Terminal Connector Terminal
      E5 30 M123 140 Existed

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  5. CHECK INTERMITTENT INCIDENT

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    INSPECTION END