Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 Toyota FJ Cruiser RWDFACTORY OEM SERVICE PROCEDURE
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 ON since the last time the ABS was activated. However, if the vehicle was stopped or at low speed (4.3 mph (7 km/h) 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.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the tester on.
- Check the freeze frame data by following the prompts on the Techstream display.
FREEZE FRAME DATA REFERENCE
| Tester Display | Measurement Item | Reference Value |
|---|---|---|
| Freeze DTC | Freeze DTC | min.: 0, max.: 65535 |
| Stop Light SW | Stop light switch signal | ON: Stop light switch ON OFF: Stop light switch OFF |
| VSC/TRAC OFF SW | VSC OFF switch signal | ON: VSC OFF SW ON OFF: VSC OFF SW OFF |
| Shift Lever Position | Shift lever position | FAIL P, N R D 4 3 2 L |
| Operated System | System status | ABS: ABS activated VSC/TRAC: VSC/TRAC activated BA: BA activated FAIL SF: Fail safe mode activated NO SYS: No system activated |
| Number of IG ON | Number of operations turning ignition switch ON since freeze frame data stored | 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 released: 0.3 to 0.9 V Brake pedal depressed: 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 | Back: Wheel direction back Forward: Wheel direction forward |
| FL Wheel Direction | Front left wheel direction | Back: Wheel direction back Forward: Wheel direction forward |
| RR Wheel Direction | Rear right wheel direction | Back: Wheel direction back Forward: Wheel direction forward |
| RL Wheel Direction | Rear left wheel direction | Back: Wheel direction back Forward: Wheel direction forward |
| Buzzer | VSC buzzer signal | ON: VSC buzzer ON OFF: VSC buzzer OFF |
| Reservoir Warning SW | Reservoir level warning switch signal | ON: Reservoir level warning switch ON OFF: Reservoir level warning switch OFF |
| Parking Brake SW | Parking brake switch signal | ON: Parking brake switch ON OFF: Parking brake switch OFF |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.