Lexus NX: Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Pre-Collision System / Data List.

(e) Read the Data List according to the display on the Techstream .

Body Electrical > Pre-Collision System > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Total Distance Traveled

-

-

-

Not applicable

Total Distance Traveled - Unit

-

-

-

Not applicable

PCS Function ON/OFF State

Pre-collision system on/off status

ON or OFF

ON: Pre-collision system on

OFF: Pre-collision system off

-

PBA Request

Pre-collision brake assist operation status

Not PBA Request, PBA Standby Request, PBA Request Level 1, PBA Request Level 2

Not PBA Request: Pre-collision brake assist not operating

PBA Standby Request: Pre-collision brake assist operating and brake pedal not depressed

PBA Request Level 1: Pre-collision brake assist operating and brake pedal depressed

PBA Request Level 2: Pre-collision brake assist operating and brake pedal deeply depressed

The value varies according to the possibility of a collision. The pre-collision brake assist request only indicates the status that the assist preparation is necessary. Whether or not the assist control is actually performed is dependent upon how the driver depresses the brake.

VGRS Activation Request

VGRS control activation request

Not Request, VGRS 1 Request, VGRS 2 Request, VGRS 3 Request

Not Request: No request

VGRS 1 Request: Request 1

VGRS 2 Request: Request 2

VGRS 3 Request: Request 3

This item is displayed on the Techstream for vehicles without the VGRS system, but cannot be used

Warning Brake Request

Warning brake request status

ON or OFF

ON: Warning brake request on

OFF: Warning brake request off

-

FPB Request

PCS brake request to skid control ECU (brake booster with master cylinder assembly) (pre-collision braking)

ON or OFF

ON: Operating

OFF: Not operating

-

PB Request

Pre-collision brake operation status

ON or OFF

ON: Operating

OFF: Not operating

-

AVS Control Request

AVS operation status

ON or OFF

ON: Operating

OFF: Not operating

This item is displayed on the Techstream for vehicles without AVS, but cannot be used

Prefill

PCS brake operation preparation to skid control ECU (brake booster with master cylinder assembly)

ON or OFF

ON: Operating

OFF: Not operating

-

PBR Request

PBR operation status

ON or OFF

ON: Operating

OFF: Not operating

-

PBH Request

PBH operation status

ON or OFF

ON: Operating

OFF: Not operating

-

LPB Request

LPB operation status

ON or OFF

ON: Operating

OFF: Not operating

-

PCS PBA Invalid

Pre-collision brake assist function status

ON or OFF

ON: Pre-collision brake assist function valid

OFF: Pre-collision brake assist function invalid

-

PCS Warning Buzzer Invalid

PCS warning buzzer function status

ON or OFF

ON: PCS warning buzzer function valid

OFF: PCS warning buzzer function invalid

-

PCS PB Invalid

PCS brake function status

ON or OFF

ON: PCS brake function valid

OFF: PCS brake function invalid

-

PCS Warning Display Request

PCS warning display request status for the multi-information display

Not Request, PCS Warning Display 1 Request, PCS Warning Display 2 Request, PCS Warning Display 3 Request

Not Request: No display

PCS Warning Display 1 Request: Display 1

PCS Warning Display 2 Request: Display 2

PCS Warning Display 3 Request: Display 3

-

PCS Warning Buzzer Request

PCS warning buzzer (skid control buzzer) status

ON or OFF

ON: PCS warning buzzer sounding

OFF: PCS warning buzzer not sounding

-

Vehicle Information (Conv/HV)

Vehicle information (Conv/HV)

Unknown, Conv, HV

-

-

PCS Function ON/OFF State Stored

Storage condition of PCS ON/OFF condition when the PCS function is off and the power switch is turned from off to on (IG)

Stored or Not Stored

Stored: Pre-collision system maintains off

Not stored: Pre-collision system always turns on

-

PCS Warning Timing State Stored 2

Storage condition of warning sensitivity setting when the PCS function is off and the power switch is turned from off to on (IG)

Stored or Not Stored

Stored: Sensitivity and CAUTION settings are maintained as previous value

Not stored: Sensitivity and CAUTION is reset to default setting

-

PCS Warning Timing State Stored 3

Storage condition of warning sensitivity setting when the PCS function is turned from off to on while the power switch is on (IG)

Stored or Not Stored

Stored: Sensitivity and CAUTION settings are maintained as previous value

Not stored: Sensitivity and CAUTION is reset to default setting

-

PCS Warning Timing State Stored 1

Storage condition of warning sensitivity setting when the PCS function is on and the power switch is turned from off to on (IG)

Stored or Not Stored

Stored: Sensitivity and CAUTION settings are maintained as previous value

Not stored: Sensitivity and CAUTION is reset to default setting

-

ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Pre-Collision System / Active Test.

(e) Perform the Active Test according to the display on the Techstream .

Body Electrical > Pre-Collision System > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

PCS Warning Buzzer

Sounds the skid control buzzer

Active / Not Active

Test possible with power switch on (IG), vehicle stopped

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