K26 Headlamp Control Module (TR7 or T4F)

WARNING: This page is about a different car, the 2013 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Connector Part Information

Harness Type: Forward Lamp
OEM Connector: 31381-1000
Service Connector: 19178089
Description: 38-Way F 2.8 Series, Sealed (BK)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool	Service Terminal	Tray	Core Crimp	Insulation Crimp
I	13575406	J-35616-4A (PU)	J-38125-553	15304719	19	E	5
II	SEALED: 13576387 UNSEALED: 13578917	J-35616-64B (L-BU)	J-38125-215A	SAITS-A03T-M064	14	9	9
III	SEALED: 13576388 UNSEALED: 13578917	J-35616-64B (L-BU)	J-38125-215A	SAITS-A03T-M064	14	9	9

K26 Headlamp Control Module (TR7 or T4F)

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1: 1	1: 0.5	1: RD/WH	1: 2140	1: Battery Positive Voltage	1: I	1: T4F/TR7
2: 2	2: 0.35	2: OG/BK	2: 5177	2: Left Headlamp Leveling Motor	2: II	2: TR7
3: 3	3: 0.35	3: YE/BK	3: 5176	3: Left Headlamp Leveling Motor	3: II	3: TR7
4: 4	4: 0.35	4: PU/WH	4: 5178	4: Left Headlamp Leveling Motor	4: II	4: TR7
5: 5	5: 0.35	5: BK	5: 5752	5: Left Headlamp Leveling Motor Low Reference	5: II	5: T4F/TR7
6	-	-	-	Not Occupied	-	-
7: 7	7: 0.5	7: TN	7: 2501	7: High Speed GMLAN Serial Data Bus-	7: III	7: T4F/TR7
8: 8	8: 0.5	8: TN/BK	8: 2500	8: High Speed GMLAN Serial Data Bus+	8: III	8: T4F/TR7
9	-	-	-	Not Occupied	-	-
10: 10	10: 0.35	10: BN/WH	10: 5180	10: Right Headlamp Leveling Motor	10: II	10: TR7
11: 11	11: 0.35	11: OG/WH	11: 5182	11: Right Headlamp Leveling Motor	11: II	11: TR7
12: 12	12: 0.35	12: GY/BK	12: 5183	12: Right Headlamp Leveling Motor	12: II	12: TR7
13	-	-	-	Not Occupied	-	-
14: 14	14: 0.35	14: GY	14: 5179	14: Left Headlamp Leveling Motor	14: II	14: TR7
15: 15	15: 0.35	15: D-GN	15: 7131	15: Left Headlamp Adaptive Forward Lighting System Motor Signal 3	15: II	15: T4F
16: 16	16: 0.35	16: BN	16: 7129	16: Left Headlamp Adaptive Forward Lighting System Motor Signal 1	16: II	16: T4F
17-18	-	-	-	Not Occupied	-	-
19: 19	19: 0.5	19: TN	19: 2501	19: High Speed GMLAN Serial Data Bus-	19: III	19: T4F/TR7
20: 20	20: 0.5	20: TN/BK	20: 2500	20: High Speed GMLAN Serial Data Bus+	20: III	20: T4F/TR7
21	-	-	-	Not Occupied	-	-
22: 22	22: 0.35	22: OG	22: 7133	22: Right Headlamp Adaptive Forward Lighting System Motor Signal 1	22: II	22: T4F
23: 23	23: 0.35	23: TN	23: 7135	23: Right Headlamp Adaptive Forward Lighting System Motor Signal 3	23: II	23: T4F
24: 24	24: 0.35	24: PK/BK	24: 5181	24: Right Headlamp Leveling Motor	24: II	24: TR7
25: 25	25: 0.5	25: BK	25: 250	25: Ground	25: I	25: T4F/TR7
26: 26	26: 0.35	26: L-BU	26: 7130	26: Left Headlamp Adaptive Forward Lighting System Motor Signal 2	26: II	26: T4F
27: 27	27: 0.35	27: GY	27: 7132	27: Left Headlamp Adaptive Forward Lighting System Motor Signal 4	27: II	27: T4F
28: 28	28: 0.35	28: PU/WH	28: 1211	28: Right Front Suspension Position Sensor Voltage Reference	28: -	28: TR7) (without F55
29: 29	29: 0.35	29: L-BU/BK	29: 1212	29: Right Front Suspension Position Sensor Low Reference	29: -	29: TR7) (without F55
30: 30	30: 0.35	30: TN/WH	30: 1213	30: Right Front Suspension Position Sensor Signal	30: -	30: TR7) (without F55
31: 31	31: 0.35	31: OG/BK	31: 1208	31: Right Rear Suspension Position Sensor Signal	31: -	31: TR7) (without F55
32: 32	32: 0.35	32: L-GN/BK	32: 1209	32: Right Rear Suspension Position Sensor Low Reference	32: -	32: TR7) (without F55
33: 33	33: 0.35	33: L-GN/WH	33: 1210	33: Right Rear Suspension Position Sensor Voltage Reference	33: -	33: TR7) (without F55
34: 34	34: 0.5 34: .35 L-BU	34: L-BU 34: .35 L-BU	34: 5986 34: 5986	34: Serial Data Communication Enable 34: Serial Data Communication Enable	34: II	34: T4F/TR7 without F55 34: T4F/TR7with F55
35: 35	35: 0.35	35: L-GN/BK	35: 5753	35: Right Headlamp Leveling Motor Low Reference	35: II	35: T4F/TR7
36: 36	36: 0.35	36: PK	36: 7134	36: Right Headlamp Adaptive Forward Lighting System Motor Signal 2	36: II	36: T4F
37: 37	37: 0.35	37: YE	37: 7136	37: Right Headlamp Adaptive Forward Lighting System Motor Signal 4	37: II	37: T4F
38	-	-	-	Not Occupied	-	-