WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

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Last Modified: 11-27-2007		1.6 D
Service Category: Vehicle Exterior	Section: Window/Glass
Model Year: 2008	Model: LX570	Doc ID: RM000000PY2017X
Title: WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

Use these procedures to troubleshoot the power window control system.
*: Use the Techstream.

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.	CHECK FOR DTC*

(a) Check for DTCs and make a note of any codes that are output.

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output in the first step, try to force output of the same DTC by simulating the symptoms indicated by the DTC.

Result

Result	Proceed to
No DTCs are output	A
B2311 is output	B
B2312 is output	B
B2313 is output	B
CAN communication system DTCs are output	C
LIN communication system DTCs are output	D

GO TO DIAGNOSTIC TROUBLE CODE CHART

GO TO CAN COMMUNICATION SYSTEM

GO TO LIN COMMUNICATION SYSTEM

4.	PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table .

Result

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

GO TO STEP 6

5.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check .

(b) Terminals of ECU .

6.	REPAIR OR REPLACE

Result

Result	Proceed to
Door window regulator and power window regulator motor assembly is replaced or removed/installed.	A
Door window regulator and power window regulator motor assembly is not replaced or removed/installed.	B

GO TO STEP 8

7.	RESET POWER WINDOW REGULATOR MOTOR

(a) If a power window switch LED is blinking, initialize the power window regulator motor .

8.	CONFIRMATION TEST

END