Climate Control Unit Connector B (30P) Inputs and Outputs

Fig 1: Identifying Climate Control Unit Connector B (30P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CONNECTOR B (CIRCLE on Circuit Diagram)

WIRE COLOR AND SIGNAL SPECIFICATION (CLIMATE CONTROL UNIT CONNECTOR B (30P) TERMINALS)

Cavity	Wire color	Signal
1	BLU/WHT	PCM (VSS)	INPUT
2	-	-	-
3	YEL/GRN	SENSOR COMMON GROUND	OUTPUT
4	BLU/YEL	MODE4	INPUT
5	LT GRN/BLK	MODE3	INPUT
6	GRN/YEL	MODE2	INPUT
7	GRN/BLK	MODE1	INPUT
8	BLU/BLK	MODE DEF	OUTPUT
9	BLU/ORN	MODE VENT	OUTPUT
10	WHT	AIR MIX COOL	OUTPUT
11	RED/YEL	AIR MIX HOT	OUTPUT
12	-	-	-
13	BLK/YEL	IG2 (Power)	INPUT
14	RED/BLK	TAILLIGHT RELAY	INPUT
15	BLU/RED	BLOWER FEEDBACK	INPUT
16	ORN/BLK	POWER TRANSISTER CONTROL	OUTPUT
17	PNK/BLK	AIR MIX POTENTIAL	INPUT
18	YEL/RED	IN-CAR TEMPERATURE SENSOR	INPUT
19	BRN/WHT	OUTSIDE AIR TEMPERATURE SENSOR	INPUT
20	WHT/BLK	SUNLIGHT SENSOR	INPUT
21	BRN	EVAPORATOR TEMPERATURE SENSOR	INPUT
22	RED/WHT	ENGINE COOLANT TEMPERATURE (ECT) SENSOR	INPUT
23	GRY	AIR MIX POTENTIAL+5 V	OUTPUT
24	-	-	-
25	GRN/RED	FRESH	OUTPUT
26	GRN/WHT	RECIRCULATE	OUTPUT
27	RED/ORN	A/C PRESSURE SWITCH	OUTPUT
28	BRN/YEL	REAR WINDOW DEFOGGER RELAY	OUTPUT
29	BLK	GROUND (G401)	INPUT
30	RED	MULTIPLEX CONTROL UNIT (DRIVER's)	INPUT