Toyota 4Runner: Inspection

Toyota 4Runner Service Manual / Vehicle Interior / Seat / Climate Control Seat Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT REFRESHING SEAT SWITCH

Text in Illustration

Component without harness connected

(Refreshing Seat Switch)

Blower

Heater

Blower Max.

Heater Max.

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

Standard Resistance:

for LH Side

Tester Connection	Switch Condition	Specified Condition
7 (BLLH) - 10 (SVSG)	Switch off	1.72 to 2.64 kΩ
	Switch on (Blower Min.)	1.72 to 2.64 kΩ
	Switch on (Blower Max.)	Below 510 Ω
6 (SW) - 1 (RV)	Switch off	2.72 to 4.08 kΩ
	Switch on (Heater Min.)	2.72 to 4.08 kΩ
	Switch on (Heater Max.)	0.28 to 0.42 kΩ

Standard Resistance:

for RH Side

Tester Connection	Switch Condition	Specified Condition
9 (BLRH) - 10 (SVSG)	Switch off	1.72 to 2.64 kΩ
	Switch on (Blower Min.)	1.72 to 2.64 kΩ
	Switch on (Blower Max.)	Below 51 Ω
11 (SW) - 2 (RV)	Switch off	2.72 to 4.08 kΩ
	Switch on (Heater Min.)	2.72 to 4.08 kΩ
	Switch on (Heater Max.)	0.28 to 0.42 kΩ

HINT:

As the dial is being turned, the resistance changes gradually.

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

(b) Apply battery voltage to the switch connector and check that the refreshing seat switch illuminates.

OK:

Measurement Condition	Specified Condition
Battery positive (+) → 4 (ILL+) Battery negative (-) → 3 (ILL-)	Illuminates

Measurement Condition

Specified Condition

Battery positive (+) → 4 (ILL+)

Battery negative (-) → 3 (ILL-)

Illuminates

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

OK:

Measurement Condition	Switch Condition	Specified Condition
Battery positive (+) → 5 (IG) Battery negative (-) → 12 (E)	Switch on	Indicator illuminates

Measurement Condition

Switch Condition

Specified Condition

Battery positive (+) → 5 (IG)

Battery negative (-) → 12 (E)

Switch on

Indicator illuminates

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

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