3UR-FE EMISSION CONTROL: AIR PUMP: INSPECTION (2008 LX570)

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Last Modified: 11-27-2007		1.6 G
Service Category: Engine/Hybrid System	Section: Emission Control
Model Year: 2008	Model: LX570	Doc ID: RM0000030YC007X
Title: 3UR-FE EMISSION CONTROL: AIR PUMP: INSPECTION (2008 LX570)

INSPECTION

1. INSPECT AIR PUMP ASSEMBLY

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	0.4 to 1.0 Ω
1 - Body ground	Always	10 kΩ or higher
2 - Body ground	Always	10 kΩ or higher

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

(b) Check the operation of the air pump.

(1) Check that air does not flow from port A to port B.

(2) Apply battery voltage to the connector, and check the air pump operation.

OK:

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Air flows from port A to port B

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

NOTICE:

Do not operate the air pump continuously for 2 minutes or more.

When operating the air pump, wait 5 minutes until the pump has cooled down between each operation. If the pump has not cooled down sufficiently, the motor will burn out.