Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

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

PROCEDURE

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 reproducing the symptoms indicated by the DTC.

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

GO TO DIAGNOSTIC TROUBLE CODE CHART

GO TO LIN COMMUNICATION SYSTEM

GO TO CAN COMMUNICATION SYSTEM

4.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page
).

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 (See page ).

(b) Terminals of ECU (See page ).

6.	REPAIR OR REPLACE

Result	Proceed to
Door window regulator replaced or removed/installed	A
Door window regulator not replaced or removed/installed	B

GO TO STEP 8

7.	RESET POWER WINDOW REGULATOR

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

8.	CONFIRMATION TEST

END

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