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:

Removal
REMOVAL PROCEDURE 1. REMOVE STEERING PAD (See page ) 2. REMOVE STEERING WHEEL ASSEMBLY 3. REMOVE LOWER STEERING COLUMN COVER 4. REMOVE UPPER STEERING COLUMN COVER 5. REMOVE SPIRAL CABLE SUB-ASSEMBLY WITH SENSOR (a) Slide the slider and disconnect the airbag connector ...

Removal
REMOVAL PROCEDURE 1. REMOVE INTAKE MANIFOLD (See page ) 2. REMOVE WIRE HARNESS CLAMP BRACKET (a) Remove the 2 bolts and wire harness clamp bracket. 3. REMOVE FUEL TUBE SUB-ASSEMBLY (a) Disconnect the fuel tube sub-assembly from ...

Front Left Seat Heat Sensor Circuit (B14C1)
DESCRIPTION Output to the front seat cushion heater assembly LH temperature sensor stops if one of the following occurs: 1) the temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change. DTC Code DTC Detection Cond ...

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