User's Manual

PS70PRO Diagnosis System

4.4. Read DTCs

Select Read Fault Codes to read trouble codes stored in ECU. Screen will show the

trouble code and its definition when read the trouble codes, shown as below.

Tip: In the process of diagnosis, if the device shows “System is OK” or “No Trouble

Code”, it means there is no related trouble code stored in ECU or some troubles are

not under the control of ECU, most of these troubles are mechanical system troubles

or executive circuit troubles, it is also possible that signal of the sensor may bias

within limits, which can be judged in Live Data.

4.5. Clear DTCs

4.5.1. Return to the previous step, select Clear DTCs to clear current and historical

trouble codes memory in ECU. Performing this function will clear all the current and

historical trouble codes. Make sure whether the trouble codes have been recorded

before clearing, shown as below.