Lexus ES: Freeze Frame Data
FREEZE FRAME DATA
FREEZE FRAME DATA
(a) When a DTC is stored, the 4WD ECU assembly stores the current vehicle state as Freeze Frame Data.
HINT:
Freeze Frame Data at the time a DTC is stored:
- When the 4WD ECU assembly stores data at the time a DTC is stored, no updates will be performed until the data is cleared.
- "Number of IG ON" is not stored as Freeze Frame Data.
CHECK FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Four Wheel Drive / Trouble Codes.
Chassis > Four Wheel Drive > Trouble Codes(e) According to the display on the Techstream, select the trouble code data display with Freeze Frame Data.
Chassis > Four Wheel Drive| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| 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. |
| Forward and Rearward G | Forward and rearward G | Min.: -25.10 m/s2 Max.: 24.90 m/s2 | Approximately 0 +/-0.13 m/s2 while stationary | 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. |
| Accelerator Opening Angle % | Accelerator pedal depression amount | Min.: 0.0% Max.: 127.0% | 0.0%: When the accelerator pedal is released | Changes in proportion to the movement of the pedal during accelerator pedal operation. |
| Real Engine Torque | Real engine torque | Min.: -1024 Nm Max.: 1023 Nm | - | - |
| Steering Angle Sensor | Steering sensor | Min.: - 3276.8° Max.: 3276.7° | Increase: Left turn Decrease: Right turn | - |
| IG1 Voltage Value | IG1 voltage value | Min.: 0.00 V Max.: 20.00 V | 11.00 to 14.00 V: Engine switch on (IG) | - |
| 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 | OFF: Parking brake released ON: Parking brake applied | - |
| Number of IG ON | Number of operations of engine switch being turned on (IG) after storing Freeze Frame Data | 0 to 31 | 0 | - |
CLEAR FREEZE FRAME DATA
NOTICE:
Clearing the DTCs will also clear the Freeze Frame Data.
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Clear the DTCs and Freeze Frame Data (Click here .gif)
).
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CAUTION / NOTICE / HINT HINT:
Use the following procedure listed to troubleshoot the Dynamic Torque Control AWD System.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
Parts Location
PARTS LOCATION ILLUSTRATION *1 BRAKE ACTUATOR ASSEMBLY - SKID CONTROL ECU *2 ECM *3 FRONT SPEED SENSOR LH *4 FRONT SPEED SENSOR RH *5 REAR SKID CONTROL SENSOR LH *6 REAR
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
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