Using Scan Tool & Freeze Frame Data
The OBD-II scan tool or Honda PGM Tester can read the Diagnostic Trouble Codes (DTC), freeze frame data, current data, and other Engine Control Module (ECM) data. Freeze frame data indicates the engine conditions when the first malfunction, misfire or fuel trim malfunction was detected. It can be useful information when troubleshooting.
By connecting the OBD-II scan tool or the Honda PGM Tester to the 16-pin Data Link Connector (DLC), various data can be retrieved from the ECM. These data conform to the SAE recommended practice. The Honda PGM Tester also reads data beyond that recommended by SAE. Understanding this data will help to find the causes of intermittent failures or engine problems.
The operating values given in the table are approximate values and may be different depending on the environment and the individual car. Unless noted otherwise, "at idle speed" means idling with the engine completely warmed up, A/T in PARK or NEUTRAL, M/T in neutral, and the A/C and all accessories turned off. See Fig 1 .