Lane Departure Alert System Steering Pad Switch Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT STEERING PAD SWITCH ASSEMBLY

INSPECT SPIRAL CABLE SUB-ASSEMBLY

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY)

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM OR BODY GROUND)

LANE DEPARTURE ALERT SYSTEM - Steering Pad Switch Circuit


DESCRIPTION

The driving support ECU assembly receives a lane departure alert main switch signal from the steering pad switch assembly and sends the signal to the forward recognition camera via CAN communication.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Cruise Control.Cruise Control System.Lane Departure Alert System Steering Pad Switch Circuit


INSPECTION PROCEDURE

NOTICE:
  1. The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System (Click here).
  2. When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
1.INSPECT STEERING PAD SWITCH ASSEMBLY

  1. Remove the steering pad switch assembly (Click here).

  1. Inspect the steering pad switch assembly (Click here).



NG
REPLACE STEERING PAD SWITCH ASSEMBLY (Click here)
OK


2.INSPECT SPIRAL CABLE SUB-ASSEMBLY

  1. Remove the spiral cable sub-assembly (Click here).

  1. Inspect the spiral cable sub-assembly (Click here).



NG
REPLACE SPIRAL CABLE SUB-ASSEMBLY (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY)

  1. Disconnect the E122 spiral cable sub-assembly connector.

  1. Disconnect the E164 driving support ECU assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E122-12 (DIST) - E164-23 (SPSW)
    		Always
    		Below 1 Ω
    E122-12 (DIST) or E164-23 (SPSW) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM OR BODY GROUND)

  1. for 3UR-FE:

    1. Disconnect the E122 spiral cable sub-assembly connector.

    2. Disconnect the A38 ECM connector.

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E122-2 (ECC) - A38-59 (ECCS)
      		Always
      		Below 1 Ω

  1. except 3UR-FE:

    1. Disconnect the E122 spiral cable sub-assembly connector.

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E122-2 (ECC) - Body ground
      		Always
      		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)