Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedures to troubleshoot the Safety Connect system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

  • When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points in the problem analysis:

    What

    Vehicle model, system name

    When

    Date, time, frequency of occurrence

    Where

    Road conditions

    Under what conditions?

    Driving conditions, weather conditions

    How did it happen?

    Problem symptoms

NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard voltage:

11 to 14 V

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

NEXT

4.

CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

NEXT

5.

VERIFY THAT CUSTOMER SUBSCRIPTION IS ACTIVE

(a) Enter the VIN into Vehicle Inquiry on the Techstream and verify the subscription type and expiration date.

NEXT

6.

PERFORM HEALTH CHECK

(a) Perform "Health Check" and check for current DTCs (See page ).


Result

Proceed to

No DTC is output

A

DTC is output

B

PRL update required

C


B

GO TO DIAGNOSTIC TROUBLE CODE CHART


C

PERFORM PRL UPDATE

A

7.

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

HINT:

If the symptom does not recur and no DTC is output, perform the symptoms reproduction method (See page ).



B

GO TO STEP 9

A

8.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Refer to Terminals of ECU (See page ).


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

NEXT

9.

ADJUST, REPAIR OR REPLACE

NEXT

10.

CONFIRMATION TEST


NEXT

END

System Description
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