Toyota Tacoma manuals

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

CAUTION / NOTICE / HINT

HINT:

  • Use these procedure to troubleshoot the seat belt warning system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

HINT:

  • 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, 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.

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.

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

5.

CHECK FOR DTC (AIRBAG SYSTEM)*

(a) Clear the DTC.

Click here (b) Recheck for DTCs.

(b) Recheck for DTCs.

Result

Proceed to

DTC is not output

A

DTC is output

B

B

GO TO AIRBAG SYSTEM

A

6.

CHECK FOR DTC (OCCUPANT CLASSIFICATION SYSTEM)*

(a) Clear the DTC.

Click here (b) Recheck for DTCs.

(b) Recheck for DTCs.

Result

Proceed to

DTC is not output

A

DTC is output

B

B

GO TO OCCUPANT CLASSIFICATION SYSTEM

A

7.

PROBLEM SYMPTOMS TABLE

(a) Refer to the 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) Data List / Active Test.

Click here (b) Terminals of ECU.

(b) Terminals of ECU.

Click here (c) On-vehicle Inspection.

(c) On-vehicle Inspection.

Click here

NEXT

9.

REPAIR OR REPLACE

NEXT

10.

CONFIRMATION TEST

NEXT

END

Customize Parameters
CUSTOMIZE PARAMETERS 1. CUSTOMIZE FUNCTION WITH TECHSTREAM NOTICE: Be sure to record the current settings before customizing. These buzzers should be ON for safe driving. Perform these ...

System Description
SYSTEM DESCRIPTION 1. SEAT BELT WARNING SYSTEM DESCRIPTION (a) Seat belt warning light operation for driver seat belt: The seat belt warning light on the combination meter assembly illuminates, bli ...

Other materials:

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK FOR DTC HINT: When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins. (a) Connect the ...

Rear Airbag Sensor LH Circuit Malfunction (B1635/24)
DESCRIPTION The airbag sensor LH consists of parts such as the safing sensor, the diagnostic circuit and the lateral deceleration sensor. When the airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated. DTC B1635/ ...

Short in Front Passenger Side Squib 2nd Step Circuit (B1815/54-B1818/54)
DESCRIPTION The front passenger side squib 2nd step circuit consists of the airbag sensor assembly and the instrument panel passenger without door airbag assembly. The circuit signals the SRS to deploy when airbag deployment conditions are met. These DTCs are set when a malfunction is detected ...

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