Tundra 4WD V8-4.6L (1UR-FE) (2010)
Required Tools & Equipment
Repair Procedure
1. Using TIS Techstream check if DTC P0418, P0419, P2440, P2441, P2442, P2443, P2446 and/or P2447 are present.
2. Using Techstream perform the manual Air Injection Test (options 1 and 2) to verify if the signal from the air injection control driver is reaching the
air pumps.
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The pumps should be heard turning on at this point and there should be battery voltage on pin 2 of the pumps during this test.
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If there is NO voltage refer to the Repair Manual for air injection control driver diagnosis.
Refer to the Technical Information System (TIS) 2010 model year Tundra Repair Manual:
3. If during the test voltage is present at the pump and the pump is NOT running or the Air Pressure (gauge) value did NOT increase from 0 to 1 psi on
TIS Techstream with the pump running remove the air pump assemblies for inspection.
Refer to TIS 2010 model year Tundra Repair Manual:
4. With the pumps removed from the vehicle verify if there is liquid or evidence that liquid entered the pumps.
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YES - If there is liquid evidence go to step 5.
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NO - If there is NO evidence of liquid go to step 7.
5. If liquid is present replace the affected pump assembly.
Refer to TIS 2010 model year Tundra Repair Manual: