Monitor "DIFFERENTIAL PRESSURE" and "PRESSURE PRE CPF" parameter on the scantool.
Specification : "DIFFERENTIAL PRESSURE" and "PRESSURE PRE CPF" data vary normally.
even at the temperature of below 0℃
Fig. 1) When turning enigne ON at below 0℃ in which water freezes, monitor if "DIFFERENTIAL PRESSURE" and "PRESSURE PRE CPF" data vary normally.
When a vehicle is in acceleration or driven in that cold condition, "DIFFERENTIAL PRESSURE" and "PRESSURE PRE CPF" data must vary.
※ When data do not vary
☞ Check if diconnected differential pressure sensing hose or pressure leakage is detected. Check if the deformation(which may disturb water flow)of the steel pipe connecting CPF and DIFFERENTIAL PRESSURE SENSOR as well.
