Dynamic Radar Cruise Control System Distance Control Switch Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
Cruise Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (VEHICLE DISTANCE)

CHECK NO. 1 SWITCH WIRE

INSPECT STEERING PAD SWITCH

INSPECT SPIRAL CABLE

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - DISTANCE CONTROL ECU AND BODY GROUND)

DYNAMIC RADAR CRUISE CONTROL SYSTEM - Distance Control Switch Circuit


DESCRIPTION

The distance control switch sets the vehicle-to-vehicle distance control mode. The distance control switch is installed in the steering pad switch. The vehicle-to-vehicle distance set value can be changed by operating the steering pad switch (distance control switch) while the dynamic radar cruise control system is in operation. The steering pad switch uses the CAN communication line to communicate with each ECU.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System Distance Control Switch Circuit


INSPECTION PROCEDURE

CAUTION:
The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution for the SRS (Click here).
NOTICE:
When the distance control ECU is replaced with a new one, initialization must be performed (Click here).
1.READ VALUE USING INTELLIGENT TESTER (VEHICLE DISTANCE)

  1. Using the intelligent tester, read the Data List (Click here).

    Radar Cruise
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Car Dist Time Setting
    		Vehicle distance time setting condition /
    SHORT, LONG, MID or NO
    		Vehicle distance selected by steering pad switch (distance control switch)
    		-
    OK:
    Normal conditions listed above are displayed.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

2.CHECK NO. 1 SWITCH WIRE


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System Distance Control Switch Circuit

  1. Disconnect the A and z36 No. 1 switch wire connectors.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    z36-4 (DIST) - A-2 (DIST)
    		Always
    		Below 1 Ω
    z36-6 (ECC) - A-10 (ECC)
    		Always
    		Below 1 Ω


NG
REPLACE NO. 1 SWITCH WIRE
OK


3.INSPECT STEERING PAD SWITCH


  1. Disconnect the steering pad switch connector from the spiral cable.


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System Distance Control Switch Circuit

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    4 (DIST) - 6 (ECC)
    		Distance control switch on (pushed)
    		Below 1 Ω
    Distance control switch off (pushed again)
    		1 MΩ or higher


NG
REPLACE STEERING PAD ASSEMBLY (Click here)
OK


4.INSPECT SPIRAL CABLE


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System Distance Control Switch Circuit

  1. Check the spiral cable and connector for scratches, cracks, dents and chips. If any defects are found, replace the spiral cable with a new one.

  1. Check the spiral cable.

    1. Set the spiral cable to the center position (Click here).

    2. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise, and measure the resistance according to the value(s) in the table below. Then rotate the spiral cable 5 times counterclockwise, and measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      z36-4 (DIST) - E12-11 (DIST)
      		Always
      		Below 1 Ω
      z36-6 (ECC) - E12-2 (ECC)

    3. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise. Then while rotating the spiral cable 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

      NOTICE:
      As the spiral cable may break, do not rotate the spiral cable more than the specified amount.
      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      z36-4 (DIST) - E12-11 (DIST)
      		Always
      		Below 1 Ω
      z36-6 (ECC) - E12-2 (ECC)


NG
REPLACE SPIRAL CABLE (Click here)
OK


5.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - DISTANCE CONTROL ECU AND BODY GROUND)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System Distance Control Switch Circuit

  1. Disconnect the E108 distance control ECU connector.

  1. Disconnect the E12 spiral cable connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E12-2 (ECC) - Body ground
    		Always
    		Below 1 Ω
    E12-11 (DIST) - E108-16 (MODE)
    		Always
    		Below 1 Ω
    E12-11 (DIST) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE DISTANCE CONTROL ECU (Click here)