Emissions - MIL ON, Various Air Injection DTC's Set

L-SB-0110-12

November 6, 2012

Air Injection System MIL "ON"

Service Category
Engine/Hybrid System

Section
Engine Control

Market
USA





Applicability

Introduction





Some 2005 - 2009 model year GX 470 and 2006 - 2007 model year LX 470 vehicles may exhibit a MIL "ON" condition with the following Diagnostic Trouble Codes (DTCs).

This condition may be caused by debris passing through the air injection pump assembly and contaminating various components in the system. Use the following procedure to address this condition.





Warranty Information





Parts Information





Required Tools & Equipment

Repair Procedure

1. Using Techstream check if DTCs P0412, P0418, P1440/P1443, P1441/P1444, P1442/P1445, P2440, or P2441 are present.














Refer to the Technical Information System (TIS) applicable model and model year Repair Manual.

2. If physical inspection is required through the Repair Manual diagnostic process, look for debris that may have contaminated the air injection system. The debris may consist of air injection pump filter material or fan blade fragments.

3. If such debris is found, replace the air injection pump.

4. Additionally, determine if the debris can be removed from any secondarily affected parts and confirm they operate properly. If they do not operate properly, part replacement is required.

5. Clear the DTC(s) and road test the vehicle to confirm the condition has been corrected.


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