Dynamic Radar Cruise Control System Distance Control Ecu Power Source Circuit

Cruise Control System. Lexus Is250, Is220D. Gse20 Ale20
Cruise Control. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DISTANCE CONTROL ECU

DYNAMIC RADAR CRUISE CONTROL SYSTEM - Distance Control ECU Power Source Circuit


DESCRIPTION

This circuit provides power to operate the distance control ECU (cruise control ECU). The distance control ECU determines information about the vehicle in front based on data from the radar sensor, and then decides how much acceleration and/or deceleration is needed to maintain the set distance. The distance control ECU also requests the skid control ECU to apply braking and to sound the buzzer.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Distance Control Ecu Power Source Circuit


INSPECTION PROCEDURE

1.CHECK DISTANCE CONTROL ECU
Lexus Is250, Is220D. Gse20 Ale20.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Distance Control Ecu Power Source Circuit
  1. Disconnect the distance control ECU connector.

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

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    J17-1 (B) - Body ground
    Engine switch on (IG)
    10 to 14 V
  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    J17-10 (SGND) - Body ground
    Always
    Below 1 Ω
    J17-12 (GND) - Body ground
    Always
    Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE