Toyota Tacoma manuals

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

Toyota Tacoma (2015-2018) Service Manual / Seat / Seat Heater System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use this procedure to troubleshoot the seat heater system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer to confirm the trouble.

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 FOR DTC (AIR CONDITIONING SYSTEM)*

(a) Clear the DTCs.

Click here (b) Check for DTCs.

(b) Check for DTCs.

Click here

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

5.

CHECK FOR DTC (SEAT HEATER SYSTEM)*

(a) Clear the DTCs.

Click here (b) Check for DTCs.

(b) Check for DTCs.

Click here

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

6.

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 8

A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here (b) Terminals of ECU

(b) Terminals of ECU

Click here (c) Data List / Active Test

(c) Data List / Active Test

Click here

NEXT

8.

REPAIR OR REPLACE

NEXT

9.

CONFIRMATION TEST

NEXT

END

System Diagram
SYSTEM DIAGRAM ...

Operation Check
OPERATION CHECK 1. CHECK SEAT HEATER (a) Turn the ignition switch to ON. (b) Check that the indicator illuminates and the surface of the front seat warms up, when the seat heater switch on the ai ...

Other materials:

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be ...

Utility
UTILITY NOTICE: If the forward recognition camera has been replaced with a new one or the windshield glass has been removed and installed, it is necessary to perform Forward Recognition Camera Axis Adjustment. If the system is turned on without performing Forward Recognition Ca ...

Lost Communication with ECM/PCM "A" Missing Message (U010087)
DESCRIPTION The engine control unit and the transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control unit with the Controller Area Network (CAN). If there is a problem in this intercommunication, the ECM stores a DTC. ...

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