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Home >> Suzuki >> 2001 >> XL-7 Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine General Information & Diagnosis) >> H25 Engine >> Diagnostic Information & Procedures >> DTC P0128: Coolant Thermostat (Coolant Temp. below Thermostat Regulating Temp.) >> P0128 Confirmation Procedure

P0128 Confirmation Procedure

WARNING: This page is about a different car, the 2004 Suzuki XL-7 and 2004 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Check to make sure that the following conditions are satisfied when using this "DTC Confirmation Procedure".
  • Atmospheric pressure:  higher than 560 mmHg (Altitude: lower than 2790 m (9150 ft)
  • Intake air temperature:  -14°C (6.8°F) or higher
  • Engine coolant temperature at engine start:  between -10°C (14°F) and 45°C (113°F)
  1. With ignition switch OFF, connect scan tool.
  2. Turn ON ignition switch, clear DTC if any.
  3. Start engine and drive vehicle at about 60 km/h (37 mph) for 15 min.
  4. Check DTC and pending DTC by using scan tool.
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