Electric Steering Lock - Power Source Circuit

Lexus IS250 IS220d GSE20 ALE20 - STEERING COLUMN

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BODY GROUND)

CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BATTERY)

ELECTRIC STEERING LOCK - Power Source Circuit

DESCRIPTION

This circuit supplies power source voltage from the battery to terminal B of the steering lock ECU. This is used as power source for the CPU, motor, communication, and peripheral circuits.


WIRING DIAGRAM

Electric Steering Lock - Power Source Circuit. STEERING COLUMN. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BODY GROUND)
Electric Steering Lock - Power Source Circuit. STEERING COLUMN. Lexus IS250 IS220d GSE20 ALE20

Disconnect the J29 connector from the steering lock actuator assembly.

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

  • Standard resistance:
  • Tester connection
    (Symbols)    		ConditionSpecified condition
    J29-1 (GND) - Body groundAlwaysBelow 1 Ω
    J29-2 (SGND) - Body groundAlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
2.CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BATTERY)
Electric Steering Lock - Power Source Circuit. STEERING COLUMN. Lexus IS250 IS220d GSE20 ALE20

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

  • Standard voltage:
  • Tester connection
    (Symbols)    		ConditionSpecified condition
    J29-7 (B) - J29-1 (GND)Always10 to 14 V
    J29-7 (B) - J29-2 (SGND)Always10 to 14 V
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BATTERY)