Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • The wireless door lock control system troubleshooting procedures are based on the premise that the power door lock control system is operating normally. Check the power door lock control system first before troubleshooting the wireless door lock control system.
  • Use these procedures to troubleshoot the wireless door lock control 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 FOR DTC*

(a) Check for DTCs and note any codes that are output (See page ).


(b) Clear the DTCs (See page ).


(c) Recheck for DTCs (See page ). Based on the
DTCs output above, try to force output of the same CAN communication system DTC, LIN communication system DTC or wireless door lock control system DTC by reproducing the symptoms indicated by the DTC.

Result

Proceed to

DTC is not output

A

CAN communication system DTC is output

B

LIN communication system DTC is output

C

Wireless door lock control system DTC is output

D


B

GO TO CAN COMMUNICATION SYSTEM


C

GO TO LIN COMMUNICATION SYSTEM


D

GO TO DIAGNOSTIC TROUBLE CODE CHART


A

4.

PROBLEM SYMPTOMS TABLE

(a) Refer to 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) Operation Check (See page ).


(b) Terminals of ECU (See page ).


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



NEXT

6.

REPAIR OR REPLACE


NEXT

7.

CONFIRMATION TEST


NEXT

END

System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Certification ECU Main body ECU Door unl ...

Customize Parameters
CUSTOMIZE PARAMETERS 1. CUSTOMIZING FUNCTION WITH TECHSTREAM NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure ...

Other materials about Toyota 4Runner:

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK POWER STEERING ECU ASSEMBLY (a) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition ...

Drive Shaft System
Problem Symptoms Table PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. ...

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