Freeze Frame Data
- 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 Techstream.
HINT:
- 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 Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.
- According to the display on the Techstream, 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.ABS/VSC/TRAC
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, TRAC, BA, PB, PBA, HAB, HA-CTRL, TSC, Fail, Non or Sys - ABS: ABS activated
VSC: VSC activated
TRAC: TR(A)C 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 prohibitedStroke 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
- Select the item that has an information (INF) code from the Freeze Frame Data screen.
- CLEAR FREEZE FRAME DATA AND INFORMATION NOTE:
Clearing the DTCs will also clear the Freeze Frame Data and information (INF) codes.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR .