Entry And Start System - Antenna Circuit

Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY OSCILLATOR - ANTENNA)

CHECK AND REPLACE DOOR OUTSIDE HANDLE

ENTRY AND START SYSTEM - Antenna Circuit

DESCRIPTION

Terminals ANT1 and ANT2 of the antenna (door outside handle) detect if the electrical key is within the action area around the door outside handle.


WIRING DIAGRAM

Entry And Start System - Antenna Circuit. DOOR LOCK. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY OSCILLATOR - ANTENNA)
Entry And Start System - Antenna Circuit. DOOR LOCK. Lexus IS250 IS220d GSE20 ALE20

Remove the outside handle.

Disconnect the antenna and door oscillator connectors.

  • Standard resistance:
  • Tester Connection (Symbols)ConditionSpecified Condition
    o1-2 (ANT2) - o2-8 (ANT2) (*1)AlwaysBelow 1 Ω
    o1-6 (SGT2) - o2-2 (SGT) (*1)AlwaysBelow 1 Ω
    o1-5 (ANT1) - o2-3 (ANT1) (*1)AlwaysBelow 1 Ω
    o1-2 (ANT2) - Body ground (*1)Always10 kΩ or higher
    o1-6 (SGT2) - Body ground (*1)Always10 kΩ or higher
    o1-5 (ANT1) - Body ground (*1)Always10 kΩ or higher
    n1-2 (ANT2) - n2-8 (ANT2) (*2)AlwaysBelow 1 Ω
    n1-6 (SGT2) - n2-2 (SGT) (*2)AlwaysBelow 1 Ω
    n1-5 (ANT1) - n2-3 (ANT1) (*2)AlwaysBelow 1 Ω
    n1-2 (ANT2) - Body ground (*2)Always10 kΩ or higher
    n1-6 (SGT2) - Body ground (*2)Always10 kΩ or higher
    n1-5 (ANT1) - Body ground (*2)Always10 kΩ or higher

*1: Front Door LH


*2: Front Door RH


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
2.CHECK AND REPLACE DOOR OUTSIDE HANDLE

Replace the door outside handle.

Check that the entry LOCK / UNLOCK function operates normally.

  • OK:
  • Entry LOCK / UNLOCK function operates normally.
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK
END (DOOR OUTSIDE HANDLE IS DEFECTIVE)