ANTI-LOCK BRAKE SYSTEM FREEZE FRAME DATA

FREEZE FRAME DATA

1. Whenever a DTC is detected, the skid control ECU (brake actuator assembly) stores the current vehicle (sensor) state as Freeze Frame Data.

2. The brake actuator assembly (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 was activated.

   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 (brake actuator assembly) will stop counting the number.

   • Freeze Frame Data at the time the ABS operates:

     The skid control ECU (brake actuator assembly) 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 (brake actuator assembly) stores data at the time a DTC is detected, no updates will be performed until the data is cleared.

CHECK FREEZE FRAME DATA

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch to ON.

3. Turn the tester on.

4. Check the freeze frame data by following the prompts on the intelligent tester display.

   ABS/VSC/TRC

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   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 being turned to ON after storing Freeze Frame Data/0 to 31	-	-
   Stop Light SW	Stop light switch/OFF or ON	OFF: Brake pedal released ON: Brake pedal depressed	-
   Parking Brake SW	Parking brake switch/OFF or ON	OFF: Parking brake released ON: Parking brake applied	-
   Reservoir Warning SW	Brake fluid level warning switch signal/OFF or ON	OFF: Brake fluid level normal ON: Brake fluid level low	-
   Gear Position	Gear position information/Fail, 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, "P, N", R, Not R	Actual gear position	-
   Shift Lever Position	Shift lever position information/Fail, 1st, 2nd, 3rd, 4th, 5th, 6th/B, D/M, "P, N", R	Actual shift lever position	-
   Operated System	Operated system status/Non, ABS, BA, Fail, Sys	ABS activated: ABS BA activated: BA Fail safe mode activated: Fail System prohibit activated: Sys No operation activated: Non	-
   FR Wheel Speed	FR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h: Vehicle stopped	When driving at constant speed: No large fluctuations
   FL Wheel Speed	FL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h: Vehicle stopped	When driving at constant speed: No large fluctuations
   RR Wheel Speed	RR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h: Vehicle stopped	When driving at constant speed: No large fluctuations
   RL Wheel Speed	RL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h: Vehicle stopped	When driving at constant speed: No large fluctuations
   Vehicle Speed	Maximum wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Actual vehicle speed	Speed indicated on speedometer
   Vehicle Speed Grade	Vehicle speed grade/Min.: -25.10 m/s2, Max.: 24.90 m/s2	0 m/s2: Vehicle stopped	During driving: Changes in proportion with vehicle acceleration/deceleration
   Real Engine Torque	Real engine torque/Min.: -1024 Nm, Max.: 1023 Nm	-	-
   Accelerator Opening Angle %	The difference of a present accelerator/Min.: 0%, Max.: 128%	0%: When the accelerator pedal is released	During accelerator pedal operation: Changes in proportion with the pedal movement
   +B1 Voltage Value	+B1 voltage value / Min.: 0 V, Max.: 20 V	-	Changes in proportion to auxiliary battery voltage

CLEAR FREEZE FRAME DATA

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch to ON.

3. Clear the DTC and Freeze Frame Data Click here.