Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the power window control system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

  • In 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, occurrence frequency

    Where

    Road conditions

    Under what conditions?

    Driving conditions, weather conditions

    How did it happen?

    Problem symptoms

NEXT

3.

PRE-CHECK

(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.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

NEXT

4.

INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

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

Click here

Result

Proceed to

No DTCs output

A

DTCs output

B

B

GO TO LIN COMMUNICATION SYSTEM

A

5.

CHECK LIN COMMUNICATION SYSTEM POWER WINDOW REGULATOR MASTER SWITCH

(a) Manually operate power window regulator master switch assembly to confirm front passenger side power window functions.

Click here

OK:

Front passenger side power window regulator motors operate by power window regulator master switch assembly

NG

GO TO REMOTE UP / DOWN FUNCTION DOES NOT OPERATE

OK

6.

CHECK FOR DTC*

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

Click here (b) Clear the DTCs.

(b) Clear the DTCs.

(c) Recheck for DTCs.

Result

Proceed to

No DTCs output

A

DTCs output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

7.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B

B

GO TO STEP 9

A

8.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Data List / Active Test

Click here (c) Terminals of ECU

(c) Terminals of ECU

Click here

NEXT

9.

REPAIR OR REPLACE

NEXT

10.

RESET POWER WINDOW MOTOR

(a) If any of the door window regulators, power window regulator motor assemblies, door glass or door glass runs have been removed and reinstalled, perform "Initialize Power Window Control System" for the applicable door glass.

Click here

NEXT

11.

CONFIRMATION TEST

NEXT

END

Precaution
PRECAUTION 1. EXPRESSIONS OF IGNITION SWITCH (a) The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below ar ...

System Description
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