Toyota Tundra Service Manual: Inspection

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Emission Control / Air Pump / Inspection

INSPECTION

PROCEDURE

1. INSPECT AIR PUMP ASSEMBLY

(a) Check the heater resistance.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 (APH+) - 3 (APHG)	-20°C (-4°F)	4.4 to 20.0 Ω
	-10°C (14°F)	3.9 to 18.0 Ω
	0°C (32°F)	3.5 to 16.0 Ω
	10°C (50°F)	3.2 to 15.0 Ω
	20°C (68°F)	3.0 to 14.0 Ω

Text in Illustration

*a	Component without harness connected (Air Pump Assembly)

If the result is not as specified, replace the air pump assembly.

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INSPECTION PROCEDURE 1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT HINT: The valve opening temperature is stamped on the water inlet with thermostat. (a) Immerse the water inlet with thermostat in water and gradually heat the water. (b) Check the valve opening temperature. Standard valve openi ...

Toyota Tundra Service Manual: Inspection

Components

Installation

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