Freeze Frame Data And 1ST Trip Freeze Frame Data

The HPCM records the driving conditions such as hybrid system condition when a malfunction is detected.

Data which are stored in the HPCM memory, along with the 1st trip DTC, are called 1st trip freeze frame data. The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT or GST. The 1st trip freeze frame data can only be displayed on the CONSULT screen.

HPCM can store three sets of freeze frame data (one set for MIL-illuminating DTC and two sets for non-MIL-illuminating DTC). 1st trip freeze frame data is stored in the HPCM memory along with the 1st trip DTC.

For MIL-illuminating DTC, there is no priority for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once freeze frame data (2nd trip detection/MIL on) is stored in the HPCM memory, 1st trip freeze frame data is no longer stored. Remember, only one set of freeze frame data can be stored in the HPCM.

For non-MIL-illuminating DTC, the freeze frame data of the 1st trip DTC has no priority. Every time another 1st trip DTC is detected after two freeze frame data of the 1st trip DTC are stored, the older freeze frame data is updated. However, once freeze frame data (2nd trip detection/MIL on) is stored in the HPCM memory, 1st trip freeze frame data is no longer stored. Remember, only one set of freeze frame data can be stored in the HPCM.

The HPCM has the following priorities to update the data.

Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the HPCM memory is erased. For the procedure for erasing the HPCM memory, refer to HOW TO ERASE DTC AND 1ST TRIP DTC .