Lexus IS250 IS220d GSE20 ALE20 - STEERING COLUMN

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (TI & TE)

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - BATTERY)

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - BODY GROUND)

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - MAIN BODY ECU RH)

POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM - Actuator Power Source Circuit

DESCRIPTION

This is the power source for the motors.


WIRING DIAGRAM

Power Tilt And Power Telescopic Steering Column System - Actuator Power Source Circuit. STEERING COLUMN. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.INSPECT FUSE (TI & TE)

Remove the TI & TE fuse from the main body ECU RH (cowl side J/B RH).

Measure the resistance of the TI & TE fuse.

  • Standard resistance:
  • Below 1 Ω
NG
Go to step 4
OK
3.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - BODY GROUND)
Power Tilt And Power Telescopic Steering Column System - Actuator Power Source Circuit. STEERING COLUMN. Lexus IS250 IS220d GSE20 ALE20

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

  • Standard resistance:
  • Tester connection
    (Terminal No.)
    ConditionSpecified value
    GND (J28-11) - Body groundAlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - MAIN BODY ECU RH)
Power Tilt And Power Telescopic Steering Column System - Actuator Power Source Circuit. STEERING COLUMN. Lexus IS250 IS220d GSE20 ALE20

Disconnect the RA connector from the main body ECU RH (cowl side J/B RH).

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

  • Standard resistance:
  • Tester condition
    (Terminal No.)
    ConditionSpecified value
    +B (J28-2) - RA-15AlwaysBelow 1 Ω
    +B (J28-2) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - MAIN BODY ECU RH)
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - MAIN BODY ECU RH (COWL SIDE J/B RH))