FREEZE FRAME DATA
The ECM stores the vehicle condition when a DTC is output, and this information can be displayed using the GTS.
Freeze frame data when a DTC is output.
When a DTC is output, the freeze frame data at the time the DTC is output is stored.
When freeze frame data is stored when a DTC is output, the data is not updated or deleted until DTCs are cleared.
CHECK FREEZE FRAME DATA
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Select a DTC to display the freeze frame data.
Check the freeze frame data for the output DTC.
LIST OF FREEZE FRAME DATA
Tech Tips
The chart below indicates the items related to the charging system from the freeze frame data recorded by the SFI system.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| Battery Voltage | Battery voltage/0.000 to 66.000 V | 11 to 14 V | - |
| Alternator Output Duty | LIN1 terminal output (charge control signal)/0.0 to 399.9% | Changes in response to generator power generation amount during charging control | - |
| Alt Vol - Non Active Test | Request voltage when regulator not under forced activation/0.000 to 79.998 V | - | - |
| Alt Vol - Active Test | Request voltage when regulator under forced activation/0.000 to 79.998 V | - | - |