Freeze Frame Data

HINT:

• Whenever a DTC is detected or the ABS operates, 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 ignition switch has been turned from off to the ON position since the last time ABS was activated. However, if the vehicle was stopped or at low speed (7 km/h (4.3 mph) or less), or if a DTC is detected, the skid control ECU will not count the number after that.
• Freeze frame data at the time the ABS operates: The skid control ECU stores and updates the data whenever the ABS system operates. When the ECU stores data at the time a DTC is detected, the data stored when the ABS operated is 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.

1. Connect Techstream to the DLC3.
2. Turn the ignition switch to the ON position.
3. Turn the tester ON.
4. From the display on the tester, select following menu items: Chassis/ABS/VSC/TRAC/Utility/ABS History.

   ABS/VSC/TRAC 

   FREEZE FRAME DATA
   
   

   Tester Display	Measurement Item	Reference Value
   Freeze DTC	Freeze DTC	min.: 0, max.: 65535
   Stop Light SW	Stop light switch signal	Stop light switch ON: ON, OFF: OFF
   VSC/TRC OFF SW	VSC OFF switch signal	VSC OFF SW ON: ON, OFF: OFF
   Shift Lever Position	Shift lever position	FAIL P, N R D 4 3 2 L
   Operated System	System status	ABS activated: ABS VSC/TRAC activated: VSC/TRAC BA activated: BA Fail safe mode activated: FAIL SF No system activated: NO SYS
   Number of IG ON	Number of operations turning ignition switch to ON after strong freeze frame data	0 to 31
   Vehicle Speed	Wheel speed sensor reading	Speed indicated on speedometer
   Steering Angle Sensor	Steering sensor reading	Left turn: Increase Right turn: Drop (Deceleration
   Yaw Rate Sensor	Yaw rate angle sensor reading	-128 to 127
   Master Cylinder Sensor 1	Master cylinder pressure sensor reading	Brake pedal release: 0.3 to 0.9 V Brake pedal depress: 0.8 to 4.5 V
   Master Cylinder Grade	Master cylinder pressure sensor change	-30 to 225 MPa/s
   Right And Left G	Right and left G (Yaw Rate)	-1.869 to 1.869
   Back And Forth G	Back and forth G (Deceleration)	-1.869 to 1.869
   FR Wheel Direction	Front right wheel direction	Wheel direction BACK: BACK Wheel direction FORWARD: FORWARD
   FL Wheel Direction	Front left wheel direction	Wheel direction BACK: BACK Wheel direction FORWARD: FORWARD
   RR Wheel Direction	Rear right wheel direction	Wheel direction BACK: BACK Wheel direction FORWARD: FORWARD
   RL Wheel Direction	Rear left wheel direction	Wheel direction BACK: BACK Wheel direction FORWARD: FORWARD
   Buzzer	VSC buzzer signal	VSC buzzer ON: ON, OFF: OFF
   Reservoir Warning SW	Reservoir level warning switch signal	Reservoir level warning Switch ON: ON, OFF: OFF
   Parking Brake SW	Parking brake switch signal	Parking brake Switch ON: ON, OFF: OFF