Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Freeze Frame Data

FREEZE FRAME DATA

DESCRIPTION

(a) When a pre-collision system DTC is stored, the driving support ECU assembly stores the current vehicle (ECU or sensor) state 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: Body Electrical / Pre-Collision 2 / Trouble Codes.

Body Electrical > Pre-Collision 2 > Trouble Codes

(e) According to the Techstream display, select a DTC that stored freeze frame data.

(f) Read the freeze frame data recorded when the DTC was stored.

Body Electrical > Pre-Collision 2

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Turn Light RH

Turn signal switch (right) status

ON or OFF

ON: Turn signal switch (right) on

OFF: Turn signal switch (right) off

-

Turn Light LH

Turn signal switch (left) status

ON or OFF

ON: Turn signal switch (left) on

OFF: Turn signal switch (left) off

-

PCS OFF Switch

Pre-collision system on/off status

ON or OFF

ON: Pre-collision system on

OFF: Pre-collision system off

-

Pre-Collision Safety Warning Buz

Pre-collision system warning buzzer

Valid or Inval

Valid: Pre-collision system warning buzzer operation possible

Inval: Pre-collision system warning buzzer operation not possible

-

Pre-Collision Brake

Pre-collision braking function

Valid or Inval

Valid: Pre-collision braking operation possible

Inval: Pre-collision braking operation not possible

-

PBA Start

Pre-collision brake assist activation signal

OFF, Standby, Assist Lv1 or Assist Lv2

OFF: Pre-collision brake assist not operating

Standby: Brake pedal not depressed during pre-collision brake assist operation

Assist Lv1: Brake pedal depressed during pre-collision brake assist operation

Assist Lv2: Brake pedal firmly depressed during pre-collision brake assist operation

Signal status changes when the pre-collision brake assist is activated before a crash (Pre-collision brake will activate only in situations where the driver depresses the brake pedal)

Warning Brake

-

-

-

Not applicable to the vehicle

Brake Assist Standby

-

-

-

This item is displayed on the Techstream but is not used.

Pre-Collision Brake Control

Pre-collision braking operational status

ON or OFF

ON: Pre-collision braking operating

OFF: Pre-collision braking not operating

-

AVS Start

-

-

-

This item is displayed on the Techstream but is not used.

VGRS Start

-

-

-

This item is displayed on the Techstream but is not used.

PBA Control

Pre-collision brake assist operational status

Valid or Invalid

Valid: Pre-collision brake assist control operation possible

Invalid: Pre-collision brake assist control operation not possible

-

Pre-Collision Safety Brake Ind

Pre-collision system alarm warning message status

ON or OFF

ON: Displayed

OFF: Not displayed

"BRAKE!" is displayed

PCS Crash Alarm Buzzer

PCS meter buzzer status

ON or OFF

ON: PCS meter buzzer sounding

OFF: PCS meter buzzer not sounding

-

Front Radar-Low Voltage History

Millimeter wave radar sensor assembly low voltage history

ON or OFF

ON: History of low voltage

OFF: No history of low voltage

-

Front Radar-Incorrect Axial Gap (Vertical) History

Millimeter wave radar sensor assembly vertical misalignment history

ON or OFF

ON: History of vertical misalignment

OFF: No history of vertical misalignment

-

Front Radar-Incorrect Axial Gap (Horizontal) History

Millimeter wave radar sensor assembly horizontal misalignment history

ON or OFF

ON: History of horizontal misalignment

OFF: No history of horizontal misalignment

-

Front Recognition Camera-Malfunction History

Front camera system unavailable history

ON or OFF

ON: History of unavailable

OFF: No history of unavailable

-

Control Mode

ECU control mode status

Normal or Check Mode

Normal: Normal operation

Check Mode: Operating in Control Mode

-

PCS Operation State Retention Setting

PCS Operation State Retention Setting customize setting

ON or OFF

ON: Customize setting set to ON

OFF: Customize setting set to OFF

-

PCS Alarm Activation Distance Retention Setting 1

PCS Alarm Activation Distance Retention Setting 1 customize setting

ON or OFF

ON: Customize setting set to ON

OFF: Customize setting set to OFF

-

PCS Alarm Activation Distance Retention Setting 2

PCS Alarm Activation Distance Retention Setting 2 customize setting

ON or OFF

ON: Customize setting set to ON

OFF: Customize setting set to OFF

-

PCS Alarm Activation Distance Retention Setting 3

PCS Alarm Activation Distance Retention Setting 3 customize setting

ON or OFF

ON: Customize setting set to ON

OFF: Customize setting set to OFF

-

    Fail-safe Chart

    How To Proceed With Troubleshooting

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