Toyota Yaris: Seat Heater Switch / Inspection

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Vehicle Interior / Seat / Seat Heater Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT SEAT HEATER SWITCH (for LH Side)

(a) Check the resistance.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

If the result is not as specified, replace the seat heater switch.

H135-6 (IG) - H135-3 (E)

H135-6 (IG) - H135-1 (HI)

H135-4 (LO) - H135-3 (E)

"HI" switch off

10 kΩ or higher

H135-6 (IG) - H135-3 (E)

H135-6 (IG) - H135-1 (HI)

H135-4 (LO) - H135-3 (E)

"HI" switch on

Below 1 Ω

H135-6 (IG) - H135-3 (E)

H135-6 (IG) - H135-4 (LO)

"LO" switch off

10 kΩ or higher

H135-6 (IG) - H135-3 (E)

H135-6 (IG) - H135-4 (LO)

"LO" switch on

Below 1 Ω

*a

Component without harness connected (Seat Heater Switch)

(b) Check the indicator illuminates.

(1) Apply battery voltage to the seat heater switch and check that the seat heater switch indicator illuminates.

OK:

Measurement Connection

Switch Condition

Specified Condition

If the result is not as specified, replace the seat heater switch.

Battery positive (+) → H135-6 (IG)

Battery negative (-) → H135-3 (E)

"HI" switch on

illuminates

Battery positive (+) → H135-6 (IG)

Battery negative (-) → H135-3 (E)

"LO" switch on

illuminates

(c) Check the illuminates.

(1) Apply battery voltage to the seat heater switch and check that the seat heater switch illuminates.

OK:

Measurement Connection

Switch Condition

Specified Condition

If the result is not as specified, replace the seat heater switch.

Battery positive (+) → H135-5 (ILL+)

Battery negative (-) → H135-2 (ILL-)

Always

illuminates

2. INSPECT SEAT HEATER SWITCH (for RH Side)

(a) Check the resistance.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

If the result is not as specified, replace the seat heater switch.

H134-6 (IG) - H134-3 (E)

H134-6 (IG) - H134-1 (HI)

H134-4 (LO) - H134-3 (E)

"HI" switch off

10 kΩ or higher

H134-6 (IG) - H134-3 (E)

H134-6 (IG) - H134-1 (HI)

H134-4 (LO) - H134-3 (E)

"HI" switch on

Below 1 Ω

H134-6 (IG) - H134-3 (E)

H134-6 (IG) - H134-4 (LO)

"LO" switch off

10 kΩ or higher

H134-6 (IG) - H134-3 (E)

H134-6 (IG) - H134-4 (LO)

"LO" switch on

Below 1 Ω

*a

Component without harness connected (Seat Heater Switch)

(b) Check the indicator illuminates.

(1) Apply battery voltage to the seat heater switch and check that the seat heater switch indicator illuminates.

OK:

Measurement Connection

Switch Condition

Specified Condition

If the result is not as specified, replace the seat heater switch.

Battery positive (+) → H134-6 (IG)

Battery negative (-) → H134-3 (E)

"HI" switch on

illuminates

Battery positive (+) → H134-6 (IG)

Battery negative (-) → H134-3 (E)

"LO" switch on

illuminates

(c) Check the illuminates.

(1) Apply battery voltage to the seat heater switch and check that the seat heater switch illuminates.

OK:

Measurement Connection

Switch Condition

Specified Condition

If the result is not as specified, replace the seat heater switch.

Battery positive (+) → H134-5 (ILL+)

Battery negative (-) → H134-2 (ILL-)

Always

illuminates

    Removal

    REMOVAL PROCEDURE 1. REMOVE SWITCH HOLE BASE SUB-ASSEMBLY Click here 2. REMOVE SEAT HEATER SWITCH (a) Disengage claws to remove the seat heater switch HINT: Use the same procedures for the opposite side...

    Installation

    INSTALLATION PROCEDURE 1. INSTALL SEAT HEATER SWITCH (a) Engage the claws to install the seat heater switch. HINT: Use the same procedures for the opposite side...

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