System is linked to the Body Control Module. Check for trouble codes and if you have a scan tool available, you can test the system.

Answered by KHLow2008 (expert)
39,956 answers provided

have no check engine codes do you have a schematic of the Body Control Module as it relates to the AC/Heater Fan?

Response from keithjvallely
1 question asked

These are Body Control Codes and normal code readers would not show you anything. You need a proper scan tool to do it.

Such symptoms do not indicate a fault with wirings so a schematic is not going to help you. You need to be tsting the Body Control Module.

Answered by KHLow2008 (expert)
39,956 answers provided

So how do I test the BCM?The car just died several times on me like 6 with no check engine or alarms almost like I ran out of fuel but is 3/4 full can the BCM cause this or is it unrelated?

Response from keithjvallely
1 question asked

You would need a scan tool to test the BCM.

You did not mention the engine stalling previously. This can be a fault with the ignition switch, which would casue the symptoms descrined.

Answered by KHLow2008 (expert)
39,956 answers provided