Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Vehicle Exterior / Wiper / Washer / Wiper And Washer System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the wiper and washer 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 COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Check if the LIN communication system is functioning normally.

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

GO TO LIN COMMUNICATION SYSTEM

4.	PROBLEM SYMPTOMS TABLE

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

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

GO TO STEP 6

5.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU (See page ).

(b) Data List / Active Test (See page ).

6.	ADJUST, REPAIR OR REPLACE

7.	CONFIRMATION TEST

END

System Description

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