Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY

(a) Check the operation of the front seat cushion heater assembly.

(1) Apply battery voltage and check the operation of the front seat cushion heater assembly.

OK:

Connection

Condition

Specified Condition

Battery positive (+) → Terminal A-3

Battery negative (-) → Terminal C-5

Always

Seat cushion heater becomes warm

Battery positive (+) → Terminal A-3

Battery negative (-) → Terminal B-1

Always

Seat cushion heater becomes warm

Text in Illustration

*a

Component without harness connected

(Front Seat Cushion Heater Assembly)

NOTICE:

Immediately after confirming that the front seat cushion heater assembly is functioning normally, remove the battery leads. Failing to do so may cause the front seat cushion heater assembly to overheat.

If the result is not as specified, replace the front seat cushion heater assembly.

(b) Check the operation of the thermostat.

(1) Apply battery voltage and check the operation of the front seat cushion heater assembly.

OK:

Connection

Condition

Specified Condition

Battery positive (+) → Terminal A-3

Battery negative (-) → Terminal C-5

Always

Seat cushion heater temperature becomes below 55°C (129°F)

NOTICE:

Immediately after confirming that the front seat cushion heater assembly is functioning normally, remove the battery leads. Failing to do so may cause the front seat cushion heater assembly to overheat.

If the result is not as specified, replace the front seat cushion heater assembly.

(c) Check the resistance.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Connection

Specified Condition

A-1 - C-3

Always

Below 1 Ω

A-2 - C-1

Always

Below 1 Ω

A-5 - C-5 - B-2

Always

Below 1 Ω

Components
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