Toyota 4Runner manuals

Toyota 4Runner: 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


NEXT

2.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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


NEXT

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


B

GO TO LIN COMMUNICATION SYSTEM


A

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


B

GO TO STEP 6


A

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU (See page ).


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



NEXT

6.

ADJUST, REPAIR OR REPLACE


NEXT

7.

CONFIRMATION TEST


NEXT

END

System Description
SYSTEM DESCRIPTION 1. WASHER LINKED OPERATION (a) When the front wiper washer switch is in the off position and the washer switch is turned on for approximately 0.1 seconds or more, the wipers sta ...

Customize Parameters
CUSTOMIZE PARAMETERS 1. CUSTOMIZING FUNCTION WITH TECHSTREAM (REFERENCE) HINT: The following items can be customized. NOTICE: When the customer requests a change in a function, first make ...

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Front Passenger Side Seat Belt Warning Light Malfunction
DESCRIPTION When the ignition switch is ON, the occupant detection ECU sends a signal to the airbag sensor assembly to indicate the state of the front seat inner belt assembly RH and also whether the front passenger seat is occupied. The airbag sensor ass ...

High Engine Revolution Signal (C1544)
DESCRIPTION The power steering ECU assembly receives engine speed signals from the ECM via CAN communication. The power steering ECU assembly provides appropriate assisting force in accordance with the engine speed signal. DTC Code ...

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