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Home >> Infiniti >> 2008 >> EX35 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS U1000 To P0153 >> P0014, P0024 EVT Control >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    TESTING CONDITION: 

    Before performing the following procedure, confirm that battery voltage is between 10V and 16V at idle. 

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE-I

    With CONSULT-III 

    1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.
    2. Start engine and warm it up to the normal operating temperature.
    3. Maintain the following conditions for at least 6 consecutive seconds.

      Hold the accelerator pedal as steady as possible.

      VHCL SPEED SPECIFICATIONS

      VHCL SPEED SE 100 - 120 km/h (63 - 75 mph)
      ENG SPEED 1, 200 - 2, 000 rpm (A constant rotation is maintained.)
      COOLAN TEMP/S More than 60°C (140°F)
      B/FUEL SCHDL More than 7.3 msec
      Selector lever D position
      CAUTION: Always drive at a safe speed.
    4. Let engine idle for 10 seconds.
    5. Check 1st trip DTC.

    With GST 

    Follow the procedure "With CONSULT-III" above.

    Is 1st trip DTC detected? 

    YES: Go to "DIAGNOSIS PROCEDURE "

    NO: GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE-II

    With CONSULT-III 

    1. Select "DATA MONITOR" mode with CONSULT-III.
    2. Maintain the following conditions for at least 20 consecutive seconds.
      ENG SPEED SPECIFICATIONS

      ENG SPEED 1, 700 - 2, 950 rpm (A constant rotation is maintained.)
      COOLAN TEMP/S More than 70°C (158°F)
      Selector lever 1st or 2nd position
      Driving location uphill Driving vehicle uphill
      (Increased engine load will help maintain the driving conditions required for this test.)
      CAUTION: Always drive at a safe speed.
    3. Check 1st trip DTC.

    With GST 

    Follow the procedure "With CONSULT-III" above.

    Is 1st trip DTC detected? 

    YES: Go to "DIAGNOSIS PROCEDURE "

    NO: INSPECTION END