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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1183 (Engine Control System - DTCS U0101 To P0183 (VQ40DE)) >> DTC P0128: Thermostat Function >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

WITH CONSULT

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.
  5. Check the indication of "COOLAN TEMP/S".

    If it is below 52°C (126°F), go to following step.

    If it is above 52°C (126°F), cool down the engine to less than 52°C (126°F). Then go to next steps.

  6. Start engine and wait at idle for at least 10 minutes under the following conditions.
    VHCL SPEED SE More than 56 km/h (35MPH)
    CAUTION: Always drive vehicle at a safe speed.
    NOTE: If "COOLAN TEMP/S" increases to more than 71°C (160°F) within 30 minutes, turn ignition switch OFF because the test result will be OK.
  7. Check 1st trip DTC.
  8. If 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".

WITH GST

Follow the procedure "WITH CONSULT" above.