PRE-CRASH SAFETY SYSTEM > DATA LIST / ACTIVE TEST

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DATA LIST

HINT:

Using the intelligent tester 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.

Connect the intelligent tester to the DLC3.
Turn the power switch on (IG).
Turn the intelligent tester on.
Enter the following menus: Body / Pre-Crash / Data List.
Enter the following menus: Body / Pre-Crash 2 / Data List.

Read the Data List according to the display on the intelligent tester.

HINT:

As the driving support ECU and seat belt control ECU both have Data List for the pre-crash system, be sure to check the Pre-Crash and Pre-Crash 2 Data Lists.

Pre-Crash
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Driver Buckle SW	Buckle switch status of driver side seat/ UNSET, SET or NG	UNSET: Driver seat belt unfastened SET: Driver seat belt fastened NG: Indeterminate data	-
Passenger Buckle SW	Buckle switch status of passenger side seat/ UNSET, SET or NG	UNSET: Front passenger seat belt unfastened SET: Front passenger seat belt fastened NG: Indeterminate data	-
Driver Belt Control	Seat belt control status of driver side seat/ STOP, ON or ERROR	STOP: Control stopped ON: Controlled ERROR: Indeterminate data	Seat belt (driver side) is fastened
Passenger Belt Control	Seat belt control status of passenger side seat/ STOP, ON or ERROR	STOP: Control stopped ON: Controlled ERROR: Indeterminate data	Seat belt (passenger side) is fastened
Number of Trouble Code	Number of past trouble codes/min: 0, max: 255	Number of DTCs will be displayed	-

Pre-Crash 2
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Wiper Information	Wiper operational status/ Unoperat, Oil off, Mist, Washer, Unknown, Intermittent, Lo, Hi	The respective operational status displayed	-
Pre-Crash Brake OFF Switch*	Pre-crash brake cancel switch status/ ON or OFF	ON: Pre-crash brake cancel switch assembly on OFF: Pre-crash brake cancel switch assembly off	-
Pre-Crash System	Pre-crash system control/ Valid or Inval	Valid: Pre-crash system control possible Inval: Pre-crash system control not possible	-
PCS Indicator	"CHECK PCS SYSTEM" display request signal/ ON or OFF	ON: "CHECK PCS SYSTEM" display requested OFF: "CHECK PCS SYSTEM" display not requested	-
PCS Disabled Indicator	"PCS TEMPORARILY NOT AVAILABLE" display request signal/ ON or OFF	ON: "PCS TEMPORARILY NOT AVAILABLE" display requested OFF: "PCS TEMPORARILY NOT AVAILABLE" display not requested	-
Pre-Crash Safety Warning Ind	PCS system warning status/ ON or OFF	ON: Pre-crash warning indicator on OFF: Pre-crash warning indicator off	-
Pre-Crash Safety Brake Ind	PCS system "BRAKE!" alert status/ ON or OFF	ON: PCS system "BRAKE!" alert on OFF: PCS system "BRAKE!" alert off	-
Pre-Crash Safety Warning Buz	PCS system warning buzzer/ Valid or Inval	Valid: PCS system warning buzzer operation possible Inval: PCS system warning buzzer operation not possible	-
Pre-Crash Brake	Pre-crash brake function/ Valid or Inval	Valid: Pre-crash brake operation possible Inval: Pre-crash brake operation not possible	-
Front Radar PSB	Front radar-linked pre-crash seat belt activation signal/ ON or OFF	ON: Front radar-linked pre-crash seat belt activated OFF: Front radar-linked pre-crash seat belt not activated	Status changes when the pre-crash seat belt is activated before a crash
PBA Start	Pre-crash brake assist activation signal/ ON or OFF	ON: Pre-crash brake assist activated OFF: Pre-crash brake assist not activated	Signal status changes when the pre-crash brake assist is activated before a crash (Pre-crash brake will activate only in situations where the driver depresses the brake pedal)
Brake Assist Standby	Supplemental brake pressure signal/ ON or OFF	ON: Supplemental brake pressure being provided OFF: Supplemental brake pressure not being provided	Signal status changes when supplemental brake pressure is being provided after a crash is judged as unavoidable and before the brake pedal is depressed
Pre-Crash Brake Control	Pre-crash brake operational status/ ON or OFF	ON: Pre-crash brake operating OFF: Pre-crash brake function not operating	Status changes when pre-crash brake operates before a crash
AVS Start	AVS control activation status/ ON or OFF	ON: AVS control activated OFF: AVS control not activated	Status changes when the suspension is controlled (stiffened) prior to a crash
CCS Cancel	Automatic cancellation of cruise control during pre-crash brake activation/ ON or OFF	ON: Cruise control automatically canceled OFF: Cruise control not automatically canceled	-
Front Radar-Dirt History	Millimeter wave radar sensor assembly dirt history/ ON or OFF	ON: History of excessive dirt OFF: No history of excessive dirt	-
Front Radar-Environment Hist	Millimeter wave radar sensor temperature condition history/ Good or Bad	Good: No history of excessive temperature Bad: History of excessive temperature	-
Curr Com PCS-WIL-R	Driver seat active headrest ECU connection status/ without or with	with: Driver seat active headrest ECU connected without: Driver seat active headrest ECU not connected	Not Supported
Curr Com PCS-WIL-L	Front passenger seat active headrest ECU connection status/ without or with	with: Front passenger seat active headrest ECU connected without: Front passenger seat active headrest ECU not connected	Not Supported
Curr Com Night View ECU	Night view ECU connection status/ without or with	with: Night view ECU connected without: Night view ECU not connected	Not Supported
Country# (DSS)	Destination country for driving support computer/ JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX	Actual country code	-
The Number of DTCs	Number of DTCs/ 0 to 255	When system is normal: 0 When a malfunction is detected: More than 0	-

*: w/ Pre-crash Brake

ACTIVE TEST

HINT:

Using the intelligent tester 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.

Connect the intelligent tester to the DLC3.
Turn the power switch on (IG).
Turn the intelligent tester on.
Enter the following menus: Body / Pre-Crash / Active Test.

Perform Active Test according to the display on the intelligent tester.

HINT:

The power switch must be turned on (IG) to proceed with the Active Test using the intelligent tester.

Pre-Crash
Tester Display	Test Part	Control Range	Diagnostic Note
Driver Seat Belt Motor	Driver seat belt motor	ON: Seat belt motor operates OFF: Seat belt motor does not operate	Seat belt (driver side) is fastened
Passenger Seat Belt Motor	Passenger seat belt motor	ON: Seat belt motor operates OFF: Seat belt motor does not operate	Seat belt (front passenger side) is fastened
Driver and Passenger Seat Belt Motor	Driver and passenger seat belt motors	ON: Seat belt motors operate OFF: Seat belt motors do not operate	Seat belts (driver and front passenger sides) are fastened

NOTICE:

The seat belt motor will only operate when the tongue plate is inserted into the buckle (seat belt fastened).
To prevent overheating the belt motor, this test cannot be activated continuously. Operate the belt motor at an interval of 30 seconds or more.