ABS/TCS - ABS/ESC Lamp ON/DTC's C2402 or U0001
Model: Sedona [VQ]Group: Brake System (41)
Number: KT2007111401
Date: Wednesday, November 14, 2007
Area: N. America
Description
Some 2006 - 2007 Sedona (VQ) vehicles with a production date earlier then March 8, 2006 may exhibit a customer concern of an ABS/ESC Warning Lamp (MIL) being illuminated. Various DTC's such as C2402 or U0001 may also be stored in the control module -OR- the GDS Scan Tool may not be able to communicate with the ABS/ESC system at all. DO NOT replace an ABS/ESC unit without at least first applying the procedure described in this TSB. These symptoms may result from poor grounds at G19 and/or G20, caused by paint remains between the bolt and the mating weld nut attaching the ground terminal to the body. This TSB provides a procedure to properly correct this condition. Remember too, that other poor connections may exist, and should also be checked prior to any part replacement.
Effective Vehicle Information
2006 - 2007 Sedona (VQ) produced before March 8, 2006
REQUIRED SST:
Global Diagnostic System (GDS) with latest software version installed
Parts Information
WARRANTY CLAIM INFORMATION
Service Procedure
Repair Procedure
1. Remove and set aside the engine cover. (4 bolts)
2. Disconnect the Mass Air Flow Sensors (MAF) electrical connector.
NOTE:
Slide the gray colored lock tab slightly in the direction indicated by the arrows in the photograph, which will expose the release tab for the connector. If this is not done first, the MAF connector will be damaged. Gray lock tab is shown here in the released (outward) position.
3. Loosen the hose clamps at the MAF and throttle assembly. Remove and lay aside the air intake hose as shown, so its out of the way.
4. Release the two spring clips that attach the air filter assembly cover. Remove the cover (with MAF attached) and the air filter insert. This will allow better access to G19 and G20.
5. Locate the ground point for G19 and G20. It is located behind and close to the ABS/ESC unit on the LH (drivers) side outward panel.
6. Using a 1/4" drive ratchet, 14" extension and 10 mm flex/swivel socket reach behind the ABS/ESC unit to remove the G19 - G20 ground bolt.
You may need to insert your other hand over top of the ABS/ESC unit (between the brake fluid reservoir and PCM) to guide the socket onto the bolt head.
The bolt used for G19 - G20 is a self-tapping bolt , which collects debris when first inserted. The next steps will provide a procedure to clean and further remove remaining debris from this bolt and its threaded hole.
7. First, move the ground lug away from the threaded hole so no debris will collect on or between the ground surfaces during the thread cleaning process.
^ Clean the removed bolt threads with a stiff bristle brush. (Do NOT use a wire wheel, as this can damage the bolts self-tapping capability!)
^ Reinstall the bolt fully without attaching the ground lug
^ Run the bolt in and out completely 3 times (without fully removing) to clean the body's threaded area. Once again completely remove the bolt and clean the threads with a stiff bristle brush.
^ Use compressed air to blow any remaining debris from the threaded hole, body surface and the self-tapping threads on the bolt.
8. Reinstall the ground lug on the bolt and fully tighten the bolt to the body.
NOTE:
Be certain that the hook on the ground lug is inserted into its mating hole when reinstalling bolt. Otherwise the ground lug may become deformed and not provide a proper ground.
9. Install all parts the reverse order of removal. Clear any DTCs that may have been generated. Cycle the ignition key OFF, and then back ON. Make sure the ABS/ESC light (MIL) turns ON for the lamp check, and then turns OFF after several seconds. If the MIL comes back on check for any stored DTCs and repair as necessary referencing the service information.