Sunday, September 9, 2018

***Acura Truck MDX V6-3.7L Technical Service Bulletin # 10-035 Date: 120724


***Acura Truck MDX V6-3.7L Technical Service Bulletin # 10-035 Date: 120724



Engine - Drive Belt Squeaks On Cold Start Idle



10-035



July 24, 2012



*Applies To:



2007-12 MDX - ALL



29



2007-08 TL-ALL



2010-12 ZDX - ALL*



Drive Belt Squeaks



(Supersedes 10-035, dated August 10, 2011, to revise the information marked by the black bars and asterisks)



REVISION SUMMARY



*^ Under CORRECTIVE ACTION and PARTS INFORMATION, ZDX was added.



^ Under WARRANTY CLAIM INFORMATION, the model information and the failed part number were changed.



^ Under REPAIR PROCEDURE A, ZDX was added and an illustration was added to step 10.*



SYMPTOM



The drive belt squeaks when the engine is started cold and then idled.



PROBABLE CAUSE



The construction of the drive belt and the alignment of the A/C compressor may cause the drive belt to create a squeaking noise when the engine is



idling. This usually occurs when the engine is cold or first started.



CORRECTIVE ACTION



REPAIR PROCEDURE A:



Replace the drive belt, and install updated NC compressor mounting bolts.



*2007-10 MDX: ALL



2011 MDX: From VIN 2hNYD2...BH500001 thru 2HNYD2...BH512245*



2007-08 TL: ALL



*2010 ZDX: ALL



2011 ZDX: From VIN 2HNYB2...BH500001 thru 2HNYB1...BH512245*



REPAIR PROCEDURE B:



Replace the drive belt only.



*2011 MDX: From VIN 2HNYD2...BH512246 and Later



2012 MDX: ALL



2011 ZDX: From VIN 2HNYB2...BH500147 and Later



2012 ZDX: ALL*



PARTS INFORMATION



*A/C Compressor Mounting Bolts



(MDX - four required, TL - three required):



P/N 90023-R70-A00*



Drive Belt (Bando Belt): P/N 38920-RCA-A01



TOOL INFORMATION



Belt Tension Release Tool (Snap-on): T/N YA9317



WARRANTY CLAIM INFORMATION



30



The normal warranty applies.



*Failed Part: P/N 38920-RCA-A03*



Defect Code: 03217



Symptom Code: 04201



Skill Level: Repair Technician



DIAGNOSIS



Start the engine cold with the A/C on, and listen for the noise. If you don't hear the noise, try turning the A/C off. Compare the noise to the audio clip



below. If needed, confirm the source of the noise by removing the drive belt and briefly restarting the engine.



REPAIR PROCEDURE A



*NOTE:



The TL is shown; the MDX and ZDX are similar.*



1. Raise the vehicle on the lift.



2. Remove the front splash shield:



^ Detach the clips.



^ Remove the bolts from under the front bumper.



3. Lower the vehicle.



*4. TL and ZDX only: Remove the A/C condenser fan shroud assembly:*



^ Disconnect the A/C condenser fan motor connector, and remove the harness clamp.



^ Loosen the A/C condenser fan shroud assembly mounting bolts.



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^ Remove the coolant reservoir, then remove the A/C condenser fan shroud assembly.



5. If you did not remove the drive belt during DIAGNOSIS, remove it now.



6. Using the belt tensioner release too, move the auto-tensioner in the direction of the solid arrow to relieve the tension on the drive belt, then



remove the drive belt.



7. Raise the vehicle on a lift.



8. Loosen, but do not remove, the A/C compressor mounting bolts.



* NOTE:



ZDX: Remove the 6x16 bolt and slide the suction hose clamp out of the way.



32



9. Replace the A/C compressor bolts with new bolts, one at a time. Tighten them finger tight. (TL shown)



NOTE:



^ MDX - Replace the four compressor mounting bolts as shown.



* ^ TL and ZDX - Replace three compressor mounting bolts.*



10. When you have replaced the bolts, torque them in a cross pattern to 22 N.m (16 lb-ft).



11. TL only: Reinstall the A/C condenser fan.



12. Reinstall the splash shield.



33



13. Install a new drive belt.



REPAIR PROCEDURE B



1. Using the belt tensioner release tool, move the auto-tensioner in the direction of the solid arrow to relieve the tension on the drive belt, then



remove the drive belt.

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