HVAC Control Module X1 (CJ2)

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module X1 (CJ2) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
A1	0.35 OG	1040	Battery Positive Voltage
A2	0.35 PK	739	Ignition 1 Voltage
A3	0.35 WH	1038	HVAC Class 2 Serial Data
A4	-	-	Not Used
A5	0.35 GY	8	Instrument Panel Lamp Supply Voltage
A6	0.35 BK	1450	Ground
A7	0.35 D-GN	734	Inside Air Temperature Sensor Signal
A8	0.35 GY	720	Low Reference
B1	0.35 BK	516	Upper Left Air Temperature Sensor Signal
B2	-	-	Not Used
B3	0.35 TN	517	Upper Right Air Temperature Sensor Signal
B4	0.35 PU	719	Low Reference
B5	0.35 L-BU/BK	590	Driver Sunload Sensor Signal
B6	0.35 GY	1548	Passenger Sunload Sensor Signal
B7	0.35 BN	718	Low Reference
B8	0.35 BK/WH	1551	Ground

Connector Part Information

OEM: 12110259
Service: 12110259
Description: 16-Way F Micro-Pack 100 Series (GN)

Terminal Part Information

Pins: A1-A3, A5-A8, B1, B3-B8
Terminal/Tray: 12146447/3
Core/Insulation Crimp: E/C
Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)