Service Data

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

3UZ-FE COOLING - SERVICE DATA

Cooling fan ECU	Cooling fan ECU power source	+B - GND (S) +B - GND (M)	Standard	9 to 14 V
	Cooling fan operation	M+ M-	Standard	10 to 21 A
	No. 2 cooling fan operation	S+ s-	Standard	10 to 21 A
	Engine idling, A/C ON	RFC - E1	-	7 to 11 A
	Engine idling, disconnect ECT sensor connector			10 to 19 A
Thermostat	Valve opening temperature		Standard	80 to 84°C (176 to 183°F)
	Valve lift		Standard	10 mm (0.39 in.) or more at 95°C (203°F)
Cooling fan relay	3 - 5		Standard	10 kΩ or higher
				Below 1 Ω (When battery voltage is applied to terminals 1 and 2)
Radiator cap	Opening pressure		Standard	93.3 to 122.7 kPa (0.95 to 1.25 kgf/ cm² , 13.5 to 17.8 psi)
			Minimum	78.5 kPa (0.8 kgf/ cm² , 11.4 psi)
Radiator	Lock plate		Height	8.8 mm (0.346 in.)
	Water leaks		Test pressure	177 kPa (1.8 kgf/ cm² , 26 psi)