THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

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Last Modified: 11-27-2007		1.6 D
Service Category: Vehicle Interior	Section: Theft Deterrent/Keyless Entry
Model Year: 2008	Model: LX570	Doc ID: RM000000W0N00PX
Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

Use these procedures to troubleshoot the theft deterrent system.
*: Use the Techstream.
Troubleshooting of the theft deterrent system is based on the premise that the door lock control system, the wireless door lock control system, the lighting system, the horn system, the engine immobiliser system and the smart access system with push-button start are operating normally. Check these systems first before troubleshooting the theft deterrent system.

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

3.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check if the CAN communication system is functioning normally.

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output	B

Go to CAN COMMUNICATION SYSTEM

4.	CHECK LIN COMMUNICATION SYSTEM*

(a) The theft deterrent system uses the LIN communication system to communicate. Check that the LIN communication system is functioning normally.

Result	Proceed to
LIN communication system is normal	A
LIN communication system is malfunctioning	B

Go to LIN COMMUNICATION SYSTEM

5.	PROBLEM SYMPTOMS TABLE

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

Go to step 7

6.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Data List / Active Test

(b) Terminals of ECU

(d) Inspection

7.	REPAIR OR REPLACE

8.	CONFIRMATION TEST

END