Check Of Freeze Frame Data
The freeze frame data can be checked by using the scan tool.
When detecting fault and storing the DTC, the ECU connected to CAN bus line obtains the data before the determination of the DTC and the data when the DTC is determined, and then stores the ECU status of that time. By analyzing each data from scan tool, the troubleshooting can be performed more efficiently. The displayed items are as the table below.
DISPLAY ITEM LIST
| Item No. | Item name | Data item | Unit |
|---|---|---|---|
| 1 | Odometer | Total driving distance after the diagnostic trouble code is generated | mph |
| 2 | Ignition cycle | Number of times the ignition switch is turned "ON" or "LOCK (OFF)" after the past failure transition | Number of counts is displayed. |
| 4 | Accumulated minute | Cumulative time for current malfunction of diagnostic trouble code | min |
| 5 | Power supply voltage | Voltage of power supply when the diagnostic trouble code is generated | V |
| 8 | Lateral G sensor | Lateral G of G and yaw rate sensor when the diagnostic trouble code is generated | G |
| 9 | G sensor | Longitudinal G of G and yaw rate sensor when the DTC is generated | G |
| 10 | Master cylinder pressure | Master cylinder pressure of Master cylinder pressure sensor when the diagnostic trouble code is generated | bar |
| 11 | Steering angle | Steering angle of steering wheel sensor when the diagnostic trouble code is generated | bar |
| 12 | Yaw rate sensor | Yaw rate of G and yaw rate sensor when the diagnostic trouble code is generated | G |
| 13 | Stoplight switch | Stoplight switch condition when the diagnostic trouble code is generated: OFF/ON | - |
| 21 | Pump motor | Pump motor condition when the diagnostic trouble code is generated: OFF/ON | - |
| 28 | ASC/TCL off switch | ASC OFF switch condition when the diagnostic trouble code is generated: OFF/ON | - |
| 301 | ABS control | ABS control when the diagnostic trouble code is generated: OFF/ON | - |
| 302 | Brake TCL control | Traction control (brake control) when the diagnostic trouble code is generated: OFF/ON | - |
| 303 | Engine TCL control | Traction control (engine control) when the diagnostic trouble code is generated: OFF/ON | - |
| 304 | ASC control | ASC control when the diagnostic trouble code is generated: OFF/ON | - |
| 305 | Brake TCL operation | Traction control (brake control) operation when the diagnostic trouble code is generated: Permission/Prohibition | - |
| 401 | FL wheel speed sensor | Wheel speed (FL) when the diagnostic trouble code is generated | mph |
| 402 | FR wheel speed sensor | Wheel speed (FR) when the diagnostic trouble code is generated | mph |
| 403 | RL wheel speed sensor | Wheel speed (RL) when the diagnostic trouble code is generated | mph |
| 404 | RR wheel speed sensor | Wheel speed (RR) when the diagnostic trouble code is generated | mph |