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Home >> Nissan-Datsun >> 2009 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0128 (Qr25DE) >> DTC P0128 Thermostat Function >> DTC Confirmation Procedure
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DTC Confirmation Procedure

WITH CONSULT-III

CAUTION: Always drive vehicle at a safe speed.
NOTE: 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: 

  1. Turn A/C switch OFF.
  2. Turn blower fan switch OFF.
  3. Turn ignition switch ON.
  4. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-III.
  5. Check the indication of "COOLAN TEMP/S".

    If it is below 56°C (133°F), go to next step.

    If it is above 56°C (133°F), cool down the engine to less than 56°C (133°F). Then go to next steps.

  6. Start engine.
  7. Drive vehicle for 10 consecutive minutes under the following conditions.
    DRIVE VEHICLE CONDITIONS REFERENCE CHART

    VHCL SPEED SE More than 56 km/h (35 MPH)

    If "COOLAN TEMP/S" increases to more than 75°C (167°F) within 10 minutes, turn ignition switch OFF because the test result will be OK  .

  8. Check 1st trip DTC.
  9. If 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".

WITH GST

Follow the procedure "With CONSULT-III" above.