FREEZE FRAME DATA/INFORMATION
Whenever an ABS, VSC or electronically controlled brake system DTC is detected, the skid control ECU stores the current vehicle (sensor) state as Freeze Frame Data.
The skid control ECU stores the number of times (maximum: 31) the power switch has been turned from off to on (IG) since the last time the ABS was activated.
For DTCs stored in the skid control ECU, information (INF) codes that are contained in the Freeze Frame Data can be displayed on the intelligent tester.
Tech Tips
However, if the vehicle is stopped or at a low speed (7 km/h (4.3 mph) or less), or if a DTC is detected, the skid control ECU will stop counting the number of times the power switch has been turned from off to on (IG).
Freeze Frame Data at the time the ABS operates:
The skid control ECU stores and updates data whenever the ABS system operates.
When the ECU stores data at the time a DTC is detected, the data stored during ABS operation is cleared.
Freeze Frame Data at the time a DTC is detected:
When the skid control ECU stores data at the time a DTC is detected, no updates will be performed until the data is cleared.
CHECK FREEZE FRAME DATA AND INFORMATION
Connect the intelligent tester to the DLC3.
Turn the power switch on (IG).
Turn the intelligent tester on.
Enter the following menus: Chassis / ABS/VSC/TRC / DTC.
According to the display on the intelligent tester, select the trouble code data display with Freeze Frame Data.
Read the Freeze Frame Data recorded when the DTC was set.
Read the information.
Select the item that has an information (INF) code from the Freeze Frame Data screen.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| Detailed Freeze DTC | Detailed code for Freeze Frame DTC / Min.: 0, Max.: 65535 | - | Number of information (INF) code output is displayed |
| Elapsed Time after Freeze Trigger | Elapsed time after freeze trigger / Min.: 0 msec, Max.: 500 msec | - | - |
| Number of IG ON | Number of operations of power switch on (IG) after storing Freeze Frame Data / 0 to 31 | - | - |
| Elapsed Time | Elapsed time after power switch on (IG) / Min.: 0 sec., Max.: 100661 sec. | - | - |
| Buzzer | Meter buzzer / ON or OFF | ON: Buzzer on OFF: Buzzer off |
- |
| Stop Light SW | Stop light switch / ON or OFF | ON: Brake pedal depressed OFF: Brake pedal released |
- |
| Parking Brake SW | Parking brake switch / ON or OFF | ON: Parking brake applied OFF: Parking brake released |
- |
| Reservoir Warning SW | Brake fluid level warning switch / ON or OFF | ON: Reservoir level low OFF: Reservoir level normal |
- |
| Shift Lever Position | Shift position information / Fail, 1st-6th/B, D/M, P,N or R | Actual shift position | - |
| Operated System | Operated system status / ABS, VSC, TRC, BA, PB, PBA, HAB, HA-CTRL, TSC, Fail, Non or Sys | - | ABS: ABS activated VSC: VSC activated TRC: TRC activated BA: BA activated PB: PB activated PBA: PBA activated HAB: HAB activated HA-CTRL: Hill-start assist control activated TSC: TSC activated Fail: Fail safe mode activated Non: No system activated Sys: System prohibited |
| Stroke Sensor | Brake pedal stroke sensor / Min.: 0 V, Max.: 5 V | When brake pedal released: 0.65 to 1.35 V | Reading increases when brake pedal is depressed |
| Stroke Sensor2 | Brake pedal stroke sensor 2 / Min.: 0 V, Max.: 5 V | When brake pedal released: 3.65 to 4.35 V | Reading decreases when brake pedal is depressed |
| Accumulator Sensor | Accumulator pressure sensor / Min.: 0 V, Max.: 5 V | Specified value: 2.9 to 4.2 V | When brake fluid is stored in the accumulator: Accumulator pressure changes in accordance with volume of fluid stored in the accumulator |
| Yaw Rate Sensor | Yaw rate sensor / Min.: -128°/s, Max.: 127°/s | Vehicle stopped: 0°/s Turning right: -128 to 0°/s Turning left: 0 to 127°/s |
- |
| Lateral G | Lateral G / Min.: -25.10 m/s2, Max.: 24.90 m/s2 |
- | During turning: Changes in proportion with acceleration |
| Forward and Rearward G | Forward and backward G / Min.: -25.10 m/s2, Max.: 24.90 m/s2 |
- | During acceleration/deceleration: Changes in proportion with acceleration |
| FR Wheel Speed | Front speed sensor RH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
| FL Wheel Speed | Front speed sensor LH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
| RR Wheel Speed | Rear speed sensor RH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
| RL Wheel Speed | Rear speed sensor LH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
| Vehicle Speed | Maximum wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
| Accelerator Opening Angle % | The difference of a present accelerator / Min.: 0%, Max.: 128% | When the accelerator pedal released: 0% | During accelerator pedal operation: Changes in proportion with the pedal movement |
| ECB* Motor Relay | ABS motor relay / ON or OFF | ON: Relay on OFF: Relay off |
- |
| ECB* Main Relay | ABS main relay / ON or OFF | ON: Relay on OFF: Relay off |
- |
| IG1 Voltage Value | IG1 voltage value / Min.: 0 V, Max.: 20 V | - | Changes in proportion to auxiliary battery voltage |
| IG2 Voltage Value | IG2 voltage value / Min.: 0 V, Max.: 20 V | - | Changes in proportion to auxiliary battery voltage |
| BS1 Voltage Value | BS voltage value / Min.: 0 V, Max.: 20 V | - | Changes in proportion to auxiliary battery voltage |
| VM1 Voltage Value | VM1 voltage value / Min.: 0 V, Max.: 20 V | - | Changes in proportion to auxiliary battery voltage |
| Motor Relay Voltage Value | Motor relay voltage value / Min.: 0 V, Max.: 20 V | During motor operation: 12 V No motor operation: 0 V |
- |
| Steering Angle Sensor | Steering angle sensor / Min.: - 3276.8°, Max.: 3276.7° | Left turn: Increase Right turn: Decrease |
- |
| Regulator Pressure Sensor Output | Regulator pressure sensor output / Min.: 0 V, Max.: 5 V | When brake pedal released: 0.1 to 0.9 V | Reading increases when brake pedal is depressed |
| Regulator Pressure Sensor Output Variant | Regulator pressure sensor output variant / Min.: -30 MPa/s, Max.: 225 MPa/s | - | - |
| Wheel Cylinder Pressure Sensor | Wheel cylinder pressure sensor / Min.: 0 V, Max.: 5 V | When brake pedal released: 0.1 to 0.9 V | Reading increases when brake pedal is depressed |
| SLA Solenoid Current | Linear solenoid additional valve (SLA) current / Min.: 0 A, Max.: 1.5 A | When brake pedal released: 0 A | - |
| SLR Solenoid Current | Linear solenoid reduction valve (SLR) current / Min.: 0 A, Max.: 1.5 A | When brake pedal released: 0 A | - |
| Target Oil Pressure | Wheel target hydraulic pressure / Min.: 0 MPa, Max.: 20 MPa | Changes according to the target wheel cylinder hydraulic pressure | - |
| ECB* Solenoid (SSC) | Simulator cut solenoid valve (SSC) / ON or OFF | ON: Solenoid on OFF: Solenoid off |
- |
| ECB* Solenoid (SCC) | Switching solenoid valve (SCC) / ON or OFF | ON: Solenoid on OFF: Solenoid off |
- |
| ECB* Solenoid (SMC) | Master cut solenoid valve (SMC) / ON or OFF | ON: Solenoid on OFF: Solenoid off |
- |
| ECB* Solenoid (SRC) | Regulator cut solenoid valve (SRC) / ON or OFF | ON: Solenoid on OFF: Solenoid off |
- |
| Voltage of Stroke Sensor | Voltage of brake pedal stroke sensor / Min.: -2.5 V, Max.: 2.49 V | - | - |
| Voltage of Stroke Sensor2 | Voltage of brake pedal stroke sensor 2 / Min.: -2.5 V, Max.: 2.49 V | - | - |
*: Electronically Controlled Brake System
CLEAR FREEZE FRAME DATA AND INFORMATION
Note
Clearing the DTCs will also clear the Freeze Frame Data and information (INF) codes.
Connect the intelligent tester to the DLC3.
Turn the power switch on (IG).
Turn the intelligent tester on.
Clear the DTCs and Freeze Frame Data Click here.