Dynamic Radar Cruise Control System - Distance Control Ecu Power Source Circuit

Lexus IS250 IS220d GSE20 ALE20 - CRUISE CONTROL

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

Dynamic Radar Cruise Control System - Distance Control Ecu Power Source Circuit. CRUISE CONTROL. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.CHECK DISTANCE CONTROL ECU
Dynamic Radar Cruise Control System - Distance Control Ecu Power Source Circuit. CRUISE CONTROL. Lexus IS250 IS220d GSE20 ALE20

Disconnect the distance control ECU connector.

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

  • Standard voltage:
  • Tester ConnectionConditionSpecified Condition
    J17-1 (B) - Body groundEngine switch on (IG)10 to 14 V

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

  • Standard resistance:
  • Tester ConnectionConditionSpecified Condition
    J17-10 (SGND) - Body groundAlwaysBelow 1 Ω
    J17-12 (GND) - Body groundAlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE