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Home › Infiniti › 2005 › Q45 › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTCS P1211 To P2138 › DTC P1564: ICC Steering Switch › Diagnostic Procedure

Diagnostic Procedure

  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground screws on the body.
    3. Refer to "GROUND INSPECTION ".
      Fig 1: Locating Three Ground Screws On Body
      G02376195Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Repair or replace ground connections.
  2. CHECK ICC STEERING SWITCH CIRCUIT 

    With CONSULT-II 

    1. Turn ignition switch ON.
    2. Select "MAIN SW", "RESUME/ACC SW", "SET SW", "DIST SW" and "CANCEL SW" in "DATA MONITOR" mode with CONSULT-II.
    3. Check each item indication under the following conditions.
      Fig 2: Display Data Monitor Mode
      G02376196Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Switch Indication Conditions
      G02376197Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch ON.
    2. Check voltage between ECM terminal 99 and ground with pressing each button.
      Fig 4: Checking Voltage Between ECM Terminal 99 And Ground
      G02376198Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 5: Voltage Specifications Chart
      G02376199Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 8.
    2. NG: 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 ICC steering switch harness connector.
    4. Check harness continuity between ICC steering switch terminal 2 and ECM terminal 67.

      Refer to WIRING DIAGRAM .

      1. Continuity should exist. 
    5. Also check harness for short to ground and short to power.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: GO TO 4.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors M135, F105
    • Combination switch (spiral cable)
    • Harness for open and short between ECM and ICC steering switch
      1. 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 harness continuity between ECM terminal 99 and ICC steering switch terminal 1. Refer to WIRING DIAGRAM .
      1. Continuity should exist. 
    2. Also check harness for short to ground and short to power.

    OK or NG 

    1. OK: GO TO 7.
    2. NG: GO TO 6.
  6. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors M135, F105
    • Combination switch (spiral cable)
    • Harness for open and short between ECM and ICC steering switch
      1. Repair open circuit or short to ground or short to power in harness or connectors.
  7. CHECK ICC STEERING SWITCH 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    1. OK: GO TO 8.
    2. NG: Replace ICC steering switch.
  8. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    1. INSPECTION END 
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