LS 460 V8-4.6L (1UR-FSE) (2007)
Steering Column Lock: Initial Inspection and Diagnostic Overview
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a)
When troubleshooting a vehicle with a diagnosis system, connect the intelligent tester or Techstream to the DLC3 of the vehicle and read
various data output from the steering lock ECU.
The steering lock ECU records DTCs when the ECU detects a malfunction in itself or in its circuits.
(b) The diagnosis information of the steering lock ECU is transmitted to the tester via the certification ECU as the steering lock ECU is not
connected to the CAN communication system.
(c)
The steering lock ECU does not store DTCs regarding past problems.
HINT:
When the engine switch is off, the main body ECU to which the intelligent tester or Techstream is to be connected may be malfunctioning or
in sleep mode.
Communication with the intelligent tester or Techstream is impossible if the main body ECU is not working.
(d) As the steering lock ECU's memory data will be deleted, do not remove the fuses or disconnect the battery terminals until the DTCs are
checked and noted.
(e)
Malfunctions related to systems other than the steering lock ECU's system may cause DTCs to be output. Note any DTCs related to other
systems.
How to Proceed With Troubleshooting
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
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Use the following procedures to troubleshoot the steering lock system.
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*: Use the intelligent tester or Techstream.