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Home › Infiniti › 2012 › EX35 Base, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTCS P1217 Through P2A03 › DTC P1564: ICC Steering Switch › Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection M95. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. CHECK ICC STEERING SWITCH CIRCUIT
    1. Turn ignition switch ON.
    2. Check the voltage between ECM harness connector terminals under the following conditions.
      ECM Condition Voltage (V)
      Connector + -
      Terminal Terminal
      M107 101 (ICC steering switch signal) 108 MAIN switch: Pressed Approx. 0
      LDP/DCA switch: Pressed Approx. 0.8
      CANCEL switch: Pressed Approx. 1.6
      DISTANCE switch: Pressed Approx. 2.2
      SET/COAST switch: Pressed Approx. 2.9
      RESUME/ACCELERATE switch: Pressed Approx. 3.4
      All ICC steering switches: Released Approx. 4.0

      Is the inspection result normal? 

      YES: GO TO  8.

      NO: GO TO 3.

  3. CHECK ICC STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Disconnect combination switch (spiral cable) harness connector.
    4. Check the continuity between combination switch (spiral cable) and ECM harness connector.
      Combination switch (spiral cable) ECM Continuity
      Connector Terminal Connector Terminal
      M303 16 M107 108 Existed
    5. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO  5.

      NO: GO TO 4.

  4. DETECT MALFUNCTIONING PART

    Check the following.

    • Combination switch (spiral cable)
    • Harness for open and short between ECM and combination switch (spiral cable)

      : Repair open circuit or short to ground or short to power in harness or connectors.

  5. CHECK ICC STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between combination switch (spiral cable) and ECM harness connector.
      Combination switch (spiral cable) ECM Continuity
      Connector Terminal Connector Terminal
      M303 13 M107 101 Existed
    2. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO  7.

      NO: GO TO 6.

  6. DETECT MALFUNCTIONING PART

    Check the following.

    • Combination switch (spiral cable)
    • Harness for open and short between ECM and combination switch (spiral cable)

      : Repair open circuit or short to ground or short to power in harness or connectors.

  7. CHECK ICC STEERING SWITCH

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Replace ICC steering switch.

  8. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

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