Toyota Tacoma (2015-2018) Service Manual: Freeze Frame Data

Toyota Tacoma (2015-2018) Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Vacuum Brake Booster) / Freeze Frame Data

FREEZE FRAME DATA

1. FREEZE FRAME DATA

(a) Using the Techstream, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output.

2. CHECK FREEZE FRAME DATA WHEN BRAKE SYSTEM OPERATES

(a) Freeze frame data is stored when the brake system operates. The freeze frame data is updated each time the system operates.

(b) Once freeze frame data is stored when the system operates, it is not cleared until the DTC is cleared.

(c) The number of times (maximum: 31) the ignition switch has been turned from off to ON since the last time the system was activated can be stored and displayed.

HINT:

When the vehicle is stopped (vehicle speed below 7 km/h (4.3 mph)), turning the ignition switch from off to ON does not cause the value to increase.
The value "31" is displayed when the ignition switch was turned ON more than 31 times.

(d) Check freeze frame data when the system operates

(1) Turn the ignition switch off.

(2) Connect the Techstream to the DLC3 and turn the ignition switch to ON.

(3) Enter the following menus: Chassis / ABS/VSC/TRAC / Utility.

(4) Select "ABS History".

(5) Check the freeze frame data when the system operates.

3. CHECK FREEZE FRAME DATA WHEN DTC WAS STORED

(a) Freeze frame data is stored when a DTC is output.

(b) Once freeze frame data is stored when a DTC is output, it is not updated or cleared until the DTC is cleared.

(c) The number of times (maximum: 31) the ignition switch has been turned from off to ON since a DTC was output can be stored and displayed.

HINT:

The value "31" is displayed when the ignition switch was turned ON more than 31 times.

(d) Check freeze frame data when DTC is output

(1) Turn the ignition switch off.

(2) Connect the Techstream to the DLC3 and turn the ignition switch to ON.

(3) Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

(4) Select a DTC to display the freeze frame data.

(5) Check the freeze frame data for the output DTC.

ABS/VSC/TRAC

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Number of IG ON	Number of times ignition switch turned to ON after storing freeze frame data/ 0 to 31	-	-
Elapsed Time	Elapsed time/ Min.: 0 sec, Max.: 100661 sec	-	-
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	-
Gear Position	Gear position information/ P/N, R, 1st-10th, Fail or Not R	Actual gear position	-
Shift Lever Position	Shift lever position information/ P/N, R, D/M, 1st-6th/B or Fail	Actual shift lever position	-
Operated System	Operated system status/ ABS, VSC, TRAC, BA, HAB, Fail, PBA, PB, HA-CTRL, TSC, SCB, Sys or Non	-	ABS: ABS is activated. VSC: VSC is activated. TRAC: TRAC is activated. BA: BA is activated. HAB: HAB is activated. Fail: Fail safe mode is activated. PBA: PBA is activated. PB: PB is activated. HA-CTRL: Hill-start assist control is activated. TSC: Trailer sway control activated. SCB: Secondary collision brake is activated.* Sys: System prohibit is activated. Non: No operation is activated. HINT: *: Not supported
M/C Sensor Grade	Master cylinder pressure sensor change/ Min.: -30 MPa/s, Max.: 225 MPa/s	Brake pedal released or pedal held at constant position: 0 MPa/s	Changes in proportion with the pedal movement speed when the brake pedal is being operated.
Yaw Rate Sensor	Yaw rate and deceleration sensor/ Min.: -128 °/s, Max.: 127 °/s	0 °/s: Vehicle stopped -128 to 0 °/s: Turning right 0 to 127 °/s: Turning left	-
Lateral G	Lateral G/ Min.: -25.10 m/s2, Max.: 24.90 m/s2	-	Changes in proportion with the pedal movement speed when the brake pedal is being operated.
Forward and Rearward G	Forward and backward G/ Min.: - 25.10 m/s2, Max.: 24.90 m/s2	-	Changes in proportion with acceleration during acceleration/deceleration.
FR Wheel Speed	Front wheel speed sensor RH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h (0 mph): Vehicle stopped	No large fluctuations when driving at a constant speed.
FL Wheel Speed	Front wheel speed sensor LH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h (0 mph): Vehicle stopped	No large fluctuations when driving at a constant speed.
RR Wheel Speed	Rear wheel speed sensor RH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h (0 mph): Vehicle stopped	No large fluctuations when driving at a constant speed.
RL Wheel Speed	Rear wheel speed sensor LH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h (0 mph): Vehicle stopped	No large fluctuations when driving at a constant speed.
Vehicle Speed	Maximum wheel speed sensor reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	0 km/h (0 mph): Vehicle stopped	No large fluctuations when driving at a constant speed.
Vehicle Speed Grade	Vehicle acceleration/ Min.: -25.10 m/s2, Max.: 24.90 m/s2	0 m/s2: Vehicle stopped	Changes in proportion with the vehicle acceleration/deceleration during driving.
Real Engine Torque	Actual engine torque/ Min.: -1024.0 Nm, Max.: 1023.0 Nm	-	-
Accelerator Opening Angle %	Throttle valve opening amount/ Min.: 0.0 %, Max.: 127.5 %	0 %: When accelerator pedal released	Changes in proportion with the movement of the pedal during accelerator pedal operation.
BS1 Voltage Value	+BS voltage value/ Min.: 0.00 V, Max.: 20.00 V	11 to 14 V	Changes in proportion to battery voltage
FR Target Oil Pressure	Front wheel RH target oil pressure/ Min.: 0 MPa, Max.: 20 MPa	Different according to target oil pressure of each wheel	-
FL Target Oil Pressure	Front wheel LH target oil pressure/ Min.: 0 MPa, Max.: 20 MPa	Different according to target oil pressure of each wheel	-
RR Target Oil Pressure	Rear wheel RH target oil pressure/ Min.: 0 MPa, Max.: 20 MPa	Different according to target oil pressure of each wheel	-
RL Target Oil Pressure	Rear wheel LH target oil pressure/ Min.: 0 MPa, Max.: 20 MPa	Different according to target oil pressure of each wheel	-
Inspection Mode	Inspection mode/ Other or Inspect	Other: Normal mode Inspect: Inspection mode	-
Steering Angle Sensor	Steering angle sensor/ Min.: - 3276.8 °, Max.: 3276.7 °	Left turn: Increase Right turn: Decrease	-
TRAC/VSC Off Mode	TRAC/VSC off mode/ Normal, TRAC OFF or VSC OFF	Normal: Normal mode TRAC OFF: TRAC off mode VSC OFF: VSC off mode	-
Master Cylinder Pressure	Master cylinder pressure sensor pressure/ Min.: 0.00 MPa, Max.: 24.48 MPa	Brake pedal operated: Proportional to pedal force Brake pedal released: 0.00 to 1.76 MPa	-
Master Cylinder Sensor Temperature	Master cylinder pressure sensor pressure/ Min.: -80 °C (-112 °F), Max.: 175 °C (347 °F)	-	-
Vehicle Stop Time from IG ON	Time vehicle stopped after ignition switch turned ON/ Min.: 0 s, Max.: 1275 s	-	-
Travel Distance from IG ON	Driving time after ignition switch turned ON/ Min.: 0 s, Max.: 1275 s	-	-
Engine Revolutions	Engine speed/ Min.: 0 rpm, Max.: 25500 rpm	-	-
Motor Power Supply Voltage	Motor power supply voltage/ Min.: 0.00 V, Max.: 20.00 V	11 to 14 V	Changes in proportion to battery voltage
Solenoid Power Supply Voltage	Solenoid power supply voltage/ Min.: 0.00 V, Max.: 20.00 V	11 to 14 V	Changes in proportion to battery voltage
MT Voltage Value	Motor voltage value/ Min.: 0.00 V, Max.: 20.00 V	-	Changes in proportion to battery voltage
Stop Light Relay State for ECU Control	Stop light control relay (for ECU control)/ ON or OFF	ON: Engine stopped by stop and start control OFF: Engine not stopped by stop and start control	-
Solenoid State for ECU Control	Solenoid (for ECU control) status/ ON or OFF	ON: Solenoid relay operating OFF: Solenoid relay not operating	-
Motor State for ECU Control	Motor (for ECU control) status/ ON or OFF	ON: Motor relay operating OFF: Motor relay not operating	-
Operation History of IG OFF while Vehicle is moving	History of ignition switch turned off when vehicle is in motion/ ON or OFF	ON: History of ignition switch turned off with vehicle speed 3 km/h (2 mph) or higher OFF: No history	-
Master Cylinder Pressure Sensor Power Supply Open	Master cylinder pressure sensor power supply voltage status/ Error or Normal	Normal	-
Solenoid Power Supply Open	Solenoid power supply voltage status/ Error or Normal	Normal	-
Motor Power Supply Open	Motor power supply voltage status/ Error or Normal	Normal	-
Stop Switch Open	Momentary interruption (open circuit) status in the wire harness between the skid control ECU (brake actuator assembly) and the stop light switch assembly/ Error or Normal	Normal	-
IG Switch	Ignition switch status/ ON or OFF	-	-
Elapsed Time after Freeze Trigger	Elapsed time after storing freeze frame data/ Min.: 0 msec, Max.: 1020 msec	-	-

4. CLEAR FREEZE FRAME DATA

NOTICE:

Clearing the DTC will also clear the Freeze Frame Data.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

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