A/C - Blows Warm Air At Idle

Classification: HA10-007

Reference: ITB10-051

Date: August 11, 2010

2010 G37; A/C BLOWS WARM AT IDLE

APPLIED VEHICLES:
2010 G37 Sedan V36) A/T, non-sport, 2WD
2010 G37 Coupe (CV36) A/T, non-sport, 2WD

IF YOU CONFIRM:

At times, the A/C blows warm with the engine at idle speed

ACTION:

1. Refer to Step 2 in the Service Procedure to confirm this bulletin applies to the vehicle you are working on.

2. If this bulletin applies reprogram the ECM.





CLAIMS INFORMATION

IMPORTANT:
The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.

SERVICE PROCEDURE

1. Connect CONSULT III (C-III) to the vehicle to begin the reprogramming procedure.





CAUTION





2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies as follows:

A. On your C-III screen look at the Part Number column (see Figure 1 example).

^ If this column is blank (no part number listed) this bulletin does not apply.

^ If a Part Number is listed write it on the Repair Order and then go to Step B.





B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number column in Table A above.

^ If there is a match this bulletin applies. Continue with the reprogramming procedure.

NOTE:
If there are two lines (two reprogramming options) on your C-III screen use the one that does not have the message Caution! Use ONLY with ITBXX-XXX.

^ If there is not a match this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.





3. If this bulletin applies and you have performed ECM reprogramming the screen in Figure 2 (above) appears when reprogramming is complete.

NOTE:
If the screen in Figure 2 does NOT display (reprogramming does NOT complete).

^ Print the page from C-III (C-III page example above) and attach it to the Repair Order for Warranty documentation.

4. Make sure to erase all DTCs from all Systems.

NOTE:
During reprogramming DTCs will set in several systems. These DTCs must be erased from all systems.

5. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.

^ If the MIL comes ON go back to ASIST for further diagnostic information. Refer to the applicable Electronic Service Manual as needed.

^ Diagnosis and repairs beyond ECM reprogramming are not covered by this bulletin.