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Home >> Suzuki >> 2012 >> Equator RMZ-4 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Performance - VQ40DE - (5 Of 6) >> DTC P0128: Thermostat Function >> DTC Confirmation Procedure >> With SDT
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With SDT

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 list" mode with SDT.
  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 "COOLANT 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 .