Freeze Frame Data
- FREEZE FRAME DATA
- The skid control ECU stores the current vehicle (sensor) state as freeze frame data when a DTC is detected, or when the ABS, BA, TRAC or VSC are operating.
The skid control ECU stores the number of times (maximum: 31) the ignition switch has been turned from off to ON since the last time the ABS, BA, TRAC or VSC was activated.
HINT:
- The skid control ECU will not count the number of times the ignition switch is turned ON if the vehicle does not drive at a speed of at least 7 km/h (4.3 mph), or a DTC is detected.
- Freeze frame data at the time the ABS, BA, TRAC or VSC operates:
The skid control ECU stores and updates the data whenever the ABS, BA, TRAC or VSC system operates.
When the ECU stores data at the time a DTC is detected, the data stored when the ABS, BA, TRAC or VSC operated may be erased.
- 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.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- From the display on the Techstream, select the FREEZE FRAME DATA.SKID CONTROL ECU:
Tester Display Measurement Item Reference Value Elapsed Time after Freeze Trigger Elapsed time after freeze trigger Min.: 0 msec, Max.: 500 msec Number of IG ON Number of operations of ignition switch ON after storing freeze frame data 0 to 31 Stop Light SW Stop light switch signal Stop light switch ON: ON, OFF: OFF Parking Brake SW Parking brake switch signal Parking brake switch ON: ON, OFF: OFF TRC(TRAC)/VSC OFF SW VSC OFF switch / ON or OFF VSC OFF switch ON: ON, OFF: OFF Gear Position Gear position information Fail
1st
2nd
3rd
4th
5th
6th
7th
8th
P, N
R
Not ROperated System Operated system status ABS activated: ABS
VSC activated: VSC
TRAC activated: TRAC
BA activated: BA
HAB activated: HAB
Fail-safe mode activated: Fail
PBA activated: PBA
PB activated: PB
Hill-start assist control activated: HA-CTRL
System prohibited: Sys
No system activated: NonMaster Cylinder Sensor Master cylinder pressure sensor reading Min.: 0.00 V, Max.: 5.00 V M/C Sensor Grade Master cylinder pressure sensor change Min.: -30 MPa/s, Max.: 225 MPa/s Stroke Sensor Stroke sensor reading Min.: 0.00 V, Max.: 5.00 V Stroke Sensor Grade Speed of brake pedal as measured by pedal stroke sensor Min.: -2560 mm/s, Max.: 2540 mm/s Yaw Rate Sensor Yaw rate sensor reading Min.: -128°/s, Max.: 127°/s Steering Angle Sensor Steering angle sensor reading Min.: -1152°
Max.: 1143°Lateral G Lateral G Min.: -25.10 m/s2 , Max.: 24.90 m/s2 Forward and Rearward G* Forward and rearward G Min.: -25.10 m/s2, Max.: 24.90 m/s2 FR Wheel Speed Front right wheel speed reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) FL Wheel Speed Front left wheel speed reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) RR Wheel Speed Rear right wheel speed reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) RL Wheel Speed Rear left wheel speed reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle Speed Vehicle speed reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle Speed Grade Vehicle speed grade Min.: -25.10 m/s2 , Max.: 24.90 m/s2 Real Engine Torque Real engine torque Min.: -1024.0 Nm, Max.: 1023.0 Nm TRAC/VSC Off Mode TRAC/VSC Off Mode Normal mode: Normal
TRAC OFF mode: TRC OFF
VSC OFF mode: VSC OFF*: for 4WD
- The skid control ECU stores the current vehicle (sensor) state as freeze frame data when a DTC is detected, or when the ABS, BA, TRAC or VSC are operating.