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Diagnosis Procedure

WARNING: This page is about a different car, the 2010 Nissan Sentra. 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 terminals and connectors of the EPS control unit for damage, bend and loose connection (unit side and connector side).

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT
    1. Disconnect the connector of EPS control unit.
    2. Check the resistance between the EPS control unit harness connector terminals.
      CONNECTOR TERMINAL RESISTANCE CHART

      EPS control unit harness connector Resistance (Ω)
      Connector No. Terminal No.
      M37 5 7 Approx. 54 - 66

      Is the measurement value within the specification? 

      YES: GO TO 3.

      NO: Repair the EPS control unit branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT

    Check the power supply and the ground circuit of the EPS control unit. Refer to "DTC C1601 BATTERY VOLT ".

    Is the inspection result normal? 

    YES (Present error): Replace the steering column assembly. Refer to "EXPLODED VIEW ".

    YES (Past error): Error was detected in the EPS control unit branch line.

    NO: Repair the power supply and the ground circuit.

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