Dynamic Radar Cruise Control System Data List / Active Test

Cruise Control System. Lexus Gs430, Gs300. Uzs190 Grs190
Cruise Control. Lexus Gs430, Gs300. Uzs190 Grs190

  1. READ DATA LIST

  1. ACTIVE TEST

Dynamic Radar Cruise Control System -- Data List / Active Test



READ DATA LIST
HINT:
Using the intelligent tester's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG).

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

    ECM (Cruise control):
    Item
    		Measurement Item / Display (Range)
    		Normal Condition
    		Diagnostic Note
    Accel Request
    		Accelerator request signal / min.: -2621.44 k/h/s, max.: 2621.36 k/h/s
    		No vehicle in front
    		-
    Vehicle Distanc
    		Millimeter wave radar sensor / min.: 0 m (0 ft.), max.: 255 m (836.65 ft.)
    		Distance to vehicle in front
    		-
    L/C Option Flag
    		Dynamic radar cruise option flag / NO or YES
    		YES: Vehicle-to-vehicle distance mode
    		-
    Distance Time
    		Vehicle distance time setting condition / SHRT, MID, LONG, NO
    		Vehicle distance selected by steering pad switch (distance control switch)
    		-
    O/D Cut Rqst
    		O/D cut request / NOT REQ or REQUEST
    		NOT REQ: Idling
    		-
    3rd Shift Down
    		Shift down request to 3rd gear / NOT REQ or REQUEST
    		NOT REQ: Idling
    		-
    4th Shift Down
    		Shift down request to 4th gear / NOT REQ or REQUEST
    		NOT REQ: Idling
    		-
    Alarm Rqst
    		Alarm request signal / NOT REQ or REQUEST
    		REQUEST: When beeping
    NOT REQ: When not beeping
    		-
    Throttle Close
    		All throttle close request / NOT REQ or REQUEST
    		ON: REQUEST
    OFF: NOT REQUEST
    		-
    Brake Ctrl Rqst
    		Brake control request / NOT REQ or REQUEST
    		ON: REQUEST
    OFF: NOT REQUEST
    		-
    Targ Decl Slope
    		Cruise target deceleration slope / 0, 1, 2, 3
    		0, 1, 2, 3
    		-
    Vehicle Spd
    		Vehicle speed sensor / min.: 0 km/h (0 mph), max.: 255 km/h (158 mph)
    		Actual vehicle speed
    		-
    Memory Spd
    		Cruise control memorized speed / min.: 0 km/h (0 mph), max.: 255 km/h (158 mph)
    		Memorized speed: Cruise control activated
    		-
    Rqst Torque
    		Cruise request torque / min.: -1024 N*m (-10442 kgf*cm, -755 ft.*lbf), max.: 1016 N*m (10360 kgf*cm, 749 ft.*lbf)
    		-
    		-
    Cruise Control
    		Cruise control system active condition / ON or OFF
    		ON: Cruise control activated
    OFF: Cruise control inactivated
    		-
    Main SW (Main)
    		Main switch signal (Main CPU) / ON or OFF
    		ON: Main switch ON (pushed on)
    OFF: Main switch OFF (pushed off)
    		A
    CCS Ready M
    		Cruise control system standby condition (Main CPU) / ON or OFF
    		Each time main switch is pushed, ON is displayed and then OFF is displayed
    		B
    CCS Indicator M
    		CRUISE main indicator signal (Main CPU) / ON or OFF
    		ON: "CCS READY" ON
    OFF: "CCS READY" OFF
    		C
    Cancel SW
    		CANCEL switch signal / ON or OFF
    		ON: CANCEL switch ON
    OFF: CANCEL switch OFF
    		-
    SET/COAST SW
    		SET / COAST switch signal / ON or OFF
    		ON: SET / COAST switch ON
    OFF: SET / COAST switch OFF
    		-
    RES/ACC SW
    		RES / ACC switch signal / ON or OFF
    		ON: RES / ACC switch ON
    OFF: RES / ACC switch OFF
    		-
    Stp Light SW M
    		Stop light switch signal (Main CPU) / ON or OFF
    		ON: Brake pedal depressed
    OFF: Brake pedal released
    		-
    Shift D Pos
    		PNP switch signal (D position) / ON or OFF
    		ON: Shift lever on D
    OFF: Shift lever not on D
    		-
    VSC Fail Safe
    		VSC fail-safe flag / ON or OFF
    		-
    		-

    HINT:
    1. A is OK, but B is NG → ECM failure
    2. B is OK, but C is NG → DTC output or ECM failure
    3. A is OK, but CRUISE main indicator light does not illuminate → Cruise main indicator light, wire harness, or ECM failure

ACTIVE TEST
HINT:
Performing the intelligent tester's Active Test allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to save time. The Data List can be displayed during the Active Test.

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG).

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

    HINT:
    The engine switch must be turned on (IG) to proceed to the Active Test using the intelligent tester.

    Combination meter (Meter ECU):
    Item
    		Test Details
    		Diagnostic Note
    Cruise Indic
    		CRUISE main indicator light is ON / OFF
    		-