Emissions - MIL ON/Multiple Air Injection DTCs Set
T-SB-0329-08Rev2
October 28, 2008
Air Injection Pump With Water Intrusion: MIL "ON" DTC P0418, P0419, and/or P244 #
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
TSB REVISION NOTICE
May 27, 2010 Rev2:
^ The Applicable Warranty coverage has been updated in the Warranty Information section.
July 13, 2009 Rev1:
The entire content of this bulletin has been updated with the following changes:
^ DTCs P2440, P2441, P2442, P2443 have been added.
^ Diagnosis and inspection of the emission control valves has been added. Any previous printed versions of this service bulletin should be discarded.
Introduction
Some 2007 - 2008 model year Tundra and 2008 model year Sequoia vehicles may exhibit a MIL "ON" condition with Diagnostic Trouble Codes (DTCs) P0418, P0419, P2440, P2441, P2442, P2443, P2445, and/or P2447. This concern may be caused by water intrusion into the air injection pump assemblies. Use the following procedure to address this condition.
Parts Information
Production Change Information
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for 60 months or 60,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Op Code EG8035 or EG9024: For California specification vehicles sold, registered, and operated in California, Connecticut (starting with '08 MY), Maine, Massachusetts, Pennsylvania (starting with '08 MY), Rhode Island (starting with '08 MY), and Vermont, this repair is covered under the California Emission Warranty. This warranty is in effect for 84 months or 70,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to occurrence of the specified condition described in this bulletin.
Required Tools & Equipment
Additional TIS Techstream or Techstream Lite units may be ordered by calling Approved Dealer Equipment (ADE).
Repair Procedure
1. Using TIS Techstream check if DTCs P0418 P0419 P2440 P2441 P2442 P2443 P2445 and/or P2447 are present.
2. Using TIS Techstream perform the manual Air Injection Active Test (options 1 and 2) to verify if the signal from the air injection control driver is reaching the air pumps.
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. If there is NO voltage refer to TSB No. T-SB-0029-08, "Air Injection Control Driver."
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 the Technical Information System (TIS) applicable model and model year Repair Manual:
4. With the pumps removed from the vehicle verify if there is liquid or evidence that liquid entered the pumps.
^ YES - If there is liquid evidence go to step 5.
^ NO - If there is NO evidence of liquid go to step 7.
5. If liquid evidence is present replace the two pump assemblies and install clamps on the inlet pipe to air pump hose joint as shown below in Figures 1 and 2.
NOTE
ONLY replace the Bank 2 pump on 2UZ-FE equipped vehicles.
Refer to TIS applicable model and model year Repair Manual:
IMPORTANT
Make sure the clamp orientation is as shown in Figures 1 and 2.
6. In some instances where water may have entered the system DTCs P24401P24411P24421P2443 may set.
Refer to TIS applicable model and model year Repair Manual to diagnose and inspect the emission control valves if necessary:
7. If there is NO liquid found in the air pump assemblies or the DTCs are still present after replacement inspect the air injection system.
Refer to TIS applicable model and model year Repair Manual:
8. Clear the DTC(s) and road test the vehicle to confirm the condition has been corrected.