Toyota Tundra Service Manual: 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.

    Components

    Installation

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