Connect Scantool to Data Link Connector (DLC).

When atmospheric temp. is below 0℃, monitor data as soon as turning engine ON.

Turn "OFF" electrical devices and A/C.

Monitor "DIFFERENTIAL PRESSURE" and "PRESSURE PRE CPF" parameter on the scantool.

1)

Specification : "DIFFERENTIAL PRESSURE" and "PRESSURE PRE CPF" data vary normally.

Even at the temperature of below 0℃

note

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.