ITB07-007c - InfinitiG37.com
Contents
1. to ASIST and the Service Manual for further diagnostic and repair information Pinch off the hi 2 inlet hose d Pinch off the i outlet hose TROTO218 Figure 1 2 4 ITBO7 007c 2 Back Flush the heater core as follows a Follow Service Manual procedures section CO to drain the cooling system b Disconnect the heater core inlet and outlet hoses c Connect a water hose garden hose to the heater core outlet NOTE Use a water supply with full building site water pressure In most shops the shop water hose that pulls down from the ceiling does not have enough water pressure for this procedure d Connect a hose from the heater core inlet side into a clean bucket minimum 5 gallon bucket recommended NOTE You must capture the water coming out of the heater core so you can confirm the silicone debris came out during the back flush e Turn ON the water supply f Let the water flow back flush thought the heater core until the bucket is full Outlet hose Connect water supply hose it FRONT 5 TRO70218 aigi il ENIE m ee 1 a 2 3 Look in the bucket to find the silicone debris long piece or balled up piece of gray silicone e f you find the silicone back flush is finished e f you don t find the silicone repeat step 2 back flush until you find silicone debris in the collection bucket 3 4 ITBO7 007c 4 Reconnect the heater core hoses and refill the cooling syste2. QY INFINITI SERVICE BULLETIN COPYRIGHT NISSAN NORTH AMERICA INC Classification Reference HA07 001c ITB07 007c March 23 2009 G35 G37 EX35 TAPPING NOISE FROM DASH AREA WHEN ENGINE IS RUNNING This bulletin amends ITB07 007b The Applied Vehicles section has been revised No other content has changed Please discard all previous versions of this bulletin APPLIED VEHICLES 2007 2008 G35 Sedan V36 2009 G37 Sedan V36 2007 G35 Coupe V35 2008 2009 G37 Coupe CV36 2008 EX35 J50 IF YOU CONFIRM A tapping noise coming from the dash area when the engine is running at operating temperature NOTE This tapping noise if it should occur sounds like a screwdriver being tapped on the work bench The tapping speed increases and decrease with the engine RPM and may require engine RPM of about 3000 for the noise to be heard DETERMINE IF The noise is coming from inside the heater core see Service Procedure ACTION Back Flush the heater core to remove gray silicone debris CLAIMS INFORMATION Submit a Primary Part PP type line claim using the following claims coding DESCRIPTION MODEL PFP OP CODE SYM DIA FRT Heater Core Cleaning Back Flush V36 G35 J50 EX35 TX15AA 1 Reference the FAST Parts Catalog and use the indicated Core Assy Front Heater P N as the PFP Submit a Primary Part PP type line claim using the following claims coding DESCRIPTION MODEL PFP OP CODE
3. SYM DIA FRT Heater Core Cleaning Back Flush CV36 G37 TX15AA 1 Reference the FAST Parts Catalog and use the indicated Core Assy Front Heater P N as the PFP IMPORTANT The purpose of ACTIONS above is to give you a quick idea of the work you will be performing You MUST closely follow the entire Service Procedure starting on page 3 as it contains information that is essential to successfully completing the repair Infiniti Bulletins are intended for use by qualified technicians not do it yourselfers Qualified technicians are properly trained individuals who have the equipment tools safety instruction and know how to do a job properly and safely NOTE If you believe that a described condition may apply to a particular vehicle DO NOT assume that it does See your Infiniti dealer to determine if this applies to your vehicle 1 4 SERVICE PROCEDURE 1 Confirm the noise is coming from the heater core as follows a Confirm the engine is at operating temperature b Turn the engine OFF c Use blunt pinch clamps to pinch the heater core inlet and outlet hoses this will stop the water flow through the heater core d Start the engine and check for the noise gradually increase engine RPM to 3500 NOTE Do not run the engine for more the 5 minutes with the heater hoses pinched e If the noise is gone this bulletin applies go to step 2 next page e If the noise is still there this bulletin does not apply return
4. m e Refer to the Service Manual section CO for cooling system refill procedures 5 Run the engine at operating temperature to confirm the noise is gone 4 4 ITBO7 007c
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