Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the theft deterrent system.
  • *: Use the Techstream.
  • The troubleshooting procedures for the theft deterrent system are based on the premise that the door lock control system, wireless door lock control system, lighting system, horn system, engine immobiliser system and smart key system (w/ Smart Key System) are operating normally. Check these systems first before troubleshooting the theft deterrent system.

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 CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B


B

GO TO CAN COMMUNICATION SYSTEM


A

4.

CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) The theft deterrent system uses the LIN communication system to communicate. Check that the LIN communication system is functioning normally.

Result

Proceed to

LIN communication system is normal

A

LIN communication system is malfunctioning

B


B

GO TO LIN COMMUNICATION SYSTEM


A

5.

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 8


A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

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


(b) Terminals of ECU (See page ).


(c) Inspection


NEXT

7.

REPAIR OR REPLACE


NEXT

8.

CONFIRMATION TEST


NEXT

END

System Diagram
SYSTEM DIAGRAM ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

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