Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Inspection

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Vehicle Interior / Seat / Front Seat Cushion Heater / Inspection

INSPECTION

PROCEDURE

1. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY (for LH Side)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

c8-1(B) - D-1

Always

Below 1 Ω

c8-1(B) - D-8

Always

Below 1 Ω

c8-3(IG1) - D-3

Always

Below 1 Ω

c8-5(SWR) - D-4

Always

Below 1 Ω

c8-6(THR) - c8-4(PR)

Seat heater temperature 15 to 30°C (59 to 86°F)

6.35 to 12.78 kΩ

c8-2(E) - D-10

Always

Below 1 Ω

c8-2(E) - D-7

Seat heater temperature 20 °C (68 °F)

1.43 to 1.73 Ω

c8-2(E) - E-2

Always

Below 1 Ω

D-12 - E-1

Always

Below 1 Ω

If the result is not as specified, replace the front seat cushion heater assembly (for LH side).

*a

Component without harness connected

(Front Seat Cushion Heater Assembly (for LH Side))

2. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY (for RH Side)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

b6-1(B) - B-1

Always

Below 1 Ω

b6-1(B) - B-8

Always

Below 1 Ω

b6-3(IG1) - B-3

Always

Below 1 Ω

b6-5(SWR) - B-4

Always

Below 1 Ω

b6-6(THR) - b6-4(PR)

Seat heater temperature 15 to 30°C (59 to 86°F)

6.35 to 12.78 kΩ

b6-2(E) - B-10

Always

Below 1 Ω

b6-2(E) - B-7

Seat heater temperature 20 °C (68 °F)

1.43 to 1.73 Ω

b6-2(E) - C-2

Always

Below 1 Ω

B-12 - C-1

Always

Below 1 Ω

If the result is not as specified, replace the front seat cushion heater assembly (for RH side).

*a

Component without harness connected

(Front Seat Cushion Heater Assembly (for RH Side))

3. INSPECT FRONT SEAT CUSHION HEATER (FRONT SEAT CUSHION PAD WITH COVER LH)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

c8-1(B) - D-1

Always

Below 1 Ω

c8-1(B) - D-8

Always

Below 1 Ω

c8-3(IG1) - D-3

Always

Below 1 Ω

c8-5(SWR) - D-4

Always

Below 1 Ω

c8-6(THR) - c8-4(PR)

Seat heater temperature 15 to 30°C (59 to 86°F)

6.10 to 13.28 kΩ

c8-2(E) - D-10

Always

Below 1 Ω

c8-2(E) - D-7

Seat heater temperature 23 °C (73 °F)

0.98 to 1.20 Ω

c8-2(E) - E-2

Always

Below 1 Ω

D-12 - E-1

Always

Below 1 Ω

If the result is not as specified, replace the front seat cushion heater (front seat cushion pad with cover LH).

*a

Component without harness connected

(Front Seat Cushion Heater (Front Seat Cushion Pad with Cover LH))

4. INSPECT FRONT SEAT CUSHION HEATER (FRONT SEAT CUSHION PAD WITH COVER RH)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

b6-1(B) - B-1

Always

Below 1 Ω

b6-1(B) - B-8

Always

Below 1 Ω

b6-3(IG1) - B-3

Always

Below 1 Ω

b6-5(SWR) - B-4

Always

Below 1 Ω

b6-6(THR) - b6-4(PR)

Seat heater temperature 15 to 30°C (59 to 86°F)

6.10 to 13.28 kΩ

b6-2(E) - B-10

Always

Below 1 Ω

b6-2(E) - B-7

Seat heater temperature 23 °C (73 °F)

0.98 to 1.20 Ω

b6-2(E) - C-2

Always

Below 1 Ω

B-12 - C-1

Always

Below 1 Ω

If the result is not as specified, replace the front seat cushion heater (front seat cushion pad with cover RH).

*a

Component without harness connected

(Front Seat Cushion Heater (Front Seat Cushion Pad with Cover RH))
    Components
    COMPONENTS ILLUSTRATION *A for Standard Seat Type *B for Sports Seat Type *1 FRONT SEAT CUSHION SHIELD *2 FRONT SEAT INNER CUSHION SHIELD *3 INNER NO. 1 FRONT SEAT CUSHION SH ...

    Installation
    INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. HINT: Use the same procedure for the RH side and LH side. The following proce ...

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