Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)

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

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
J29-4 (SLP1) - J29-2 (SGND)	Turn the engine switch off Turn the engine switch on (ACC or IG)	Below 1 V

NG: Go to step 2

Fig 1: Identifying Steering Lock Actuator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE STEERING LOCK ACTUATOR ASSEMBLY (See DISASSEMBLY )

CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY POWER SOURCE CONTROL ECU)

Disconnect the J29 connector from the steering lock actuator assembly.
Disconnect the J55 connector from the power source control ECU.

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

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
J29-4 (SLP1) - J55-26 (SLP)	Always	Below 1 Ω
J29-4 (SLP1) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying Steering Lock Actuator And Power Source Control ECU Connector Terminals

OK: CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for start) (See PROBLEM SYMPTOMS TABLE )