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HOMESERVICE MANUALSACURA2023MDX BASEREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSBODY ELECTRICAL SYSTEM - SYSTEM DESCRIPTION - DTC TROUBLESHOOTING INDEXCONNECTOR VIEWBODY CONTROL MODULE CONNECTOR FOR INPUTS AND OUTPUTS

2023 Acura MDX Base

Body Control Module Connector for Inputs and Outputs

2023 Acura MDX BaseSECTION Body Control Module Connector for Inputs and Outputs

Connector Index
Body Control Module Connector A (66P)
Body Control Module Connector B (66P)
Body Control Module Connector C (66P)

Body Control Module Connector A (66P) (female terminals)

Courtesy of HONDA, U.S.A., INC.

Terminal number	Terminal name	Description
1	+B_BACK_UP	Power source for body control module
2	IG1_FUEL_PUMP	IG1 power source
3 *1	WAC_IND(-)	Detects WAC_IND(-) signal
4	Not used	---
5	Not used	---
6	Not used	---
7	Not used	---
8	Not used	---
9	Not used	---
10 *2	FR_DEICER_SW	Detects FR_DEICER_SW signal
11	Not used	---
12	Not used	---
13	INTR_LIGHT-	Outputs INTR_LIGHT- signal
14	Not used	---
15	Not used	---

*1: With walk away close power tailgate *2: With heated windshield wiper area *3: With fog light*4: With active lane change assist

Terminal number	Terminal name	Description
16	Not used	---
17	Not used	---
18	+B_SMART	Power source for body control module
19	Not used	---
20	Not used	---
21	Not used	---
22	Not used	---
23	ATP-P	Detects ATP-P signal
24	Not used	---
25	Not used	---
26	Not used	---
27	Not used	---
28	BACK_UP(WIPER)	Detects BACK_UP(WIPER) line
29	LIN(FR_WIPER)	Communication line
30	Not used	---
31	Not used	---
32	Not used	---
33	S-NET	Communication line
34	BRK_DIAG	Detects BRK_DIAG signal
35	HAZARD_SW	Detects HAZARD_SW signal
36	Not used	---
37	Not used	---
38 *4	TURN_LOCK	Detects TURN_LOCK signal
39	Not used	---
40	Not used	---
41	H/L_ON_SW	Detects H/L_ON_SW signal
42	SMALL_LT_SW	Detects SMALL_LT_SW signal
43	H/L_OFF_SW	Detects H/L_OFF_SW signal
44	Not used	---
45 *3	FR_FOG_SW	Detects FR_FOG_SW signal
46	H/L_HI_SW	Detects H/L_HI_SW signal
47	PASSING_SW	Detects PASSING_SW signal
48	R_TURN_SW	Detects R_TURN_SW signal
49	L_TURN_SW	Detects L_TURN_SW signal
50	COMBI_SW_GND(LT)	Ground for combination light switch
51	SGND	Ground for body control module
52	K-LINE	Communication line
53	L-LINE	Communication line
54	BF-CAN_L	Communication line
55	BF-CAN_H	Communication line
56	BB-CAN_L	Communication line
57	BB-CAN_H	Communication line
58	RR_WASHER_SW	Detects RR_WASHER_SW signal
59	RR_WIPER_SW	Detects RR_WIPER_SW signal
60	RR_WIPER_INT_SW	Detects RR_WIPER_INT_SW signal
61	FR_WASHER_SW	Detects FR_WASHER_SW signal
62	FR_WIPER_INT_VOL	Detects FR_WIPER_INT_VOL signal

*1: With walk away close power tailgate *2: With heated windshield wiper area *3: With fog light*4: With active lane change assist

Terminal number	Terminal name	Description
63	FR_WIPER_HI_SW	Detects FR_WIPER_HI_SW signal
64	FR_WIPER_INT_SW	Detects FR_WIPER_INT_SW signal
65	FR_WIPER_MIST_SW	Detects FR_WIPER_MIST_SW signal
66	COMBI_SW_GND(WIP)	Ground for wiper/washer switch

*1: With walk away close power tailgate *2: With heated windshield wiper area *3: With fog light*4: With active lane change assist

Body Control Module Connector B (66P) (female terminals)

Courtesy of HONDA, U.S.A., INC.

Terminal number	Terminal name	Description
1	+B_HAZARD	Power source for body control module
2	PGND	Ground for body control module
3	AS_COURTESY_LT-	Outputs AS_COURTESY_LT- signal
4	Not used	---
5	Not used	---
6	Not used	---
7	Not used	---
8	Not used	---
9	Not used	---
10	Not used	---
11	Not used	---
12	Not used	---
13	Not used	---
14	Not used	---
15	Not used	---
16	Not used	---
17 *	CDS	Detects CDS signal

*:'22-24

Terminal number	Terminal name	Description
18	Not used	---
19	Not used	---
20	Not used	---
21	Not used	---
22	DR_COURTESY_LT-	Outputs DR_COURTESY_LT- signal
23	Not used	---
24	Not used	---
25	Not used	---
26	Not used	---
27	Not used	---
28	Not used	---
29	Not used	---
30	RR_R_SEAT_SW	Detects RR_R_SEAT signal
31	RR_L_SEAT_SW	Detects RR_L_SEAT signal
32	RR_R_SEAT_RLY_CL-	Outputs RR_R_SEAT_RLY_CL- signal
33	RR_L_SEAT_RLY_CL-	Outputs RR_L_SEAT_RLY_CL- signal
34	Not used	---
35	RR_L_COURTESY_LT-	Outputs RR_L_COURTESY_LT- signal
36	Not used	---
37	Not used	---
38	Not used	---
39	Not used	---
40	Not used	---
41	SMART_BUZZER	Outputs SMART_BUZZER signal
42	CARGO_LT	Outputs CARGO_LT signal
43	TAIL_GATE_OPEN_SW	Detects TAIL_GATE_OPEN_SW signal
44	TAIL_GATE_SW	Detects TAIL_GATE_SW signal
45	RR_L_SILCON_UNLOCK	Detects RR_L_SILCON_UNLOCK signal
46	Not used	---
47	RL_DOOR_SW	Detects RL_DOOR_SW signal
48	R2_TURN	Outputs R2_TURN signal
49	L2_TURN	Outputs L2_TURN signal
50	RR_WIPER_MTR	Outputs RR_WIPER_MTR signal
51	GND	Ground for body control module
52	RR_R_COURTESY_LT-	Outputs RR_R_COURTESY_LT- signal
53	RR_R_SILCON_UNLOCK	Detects RR_R_SILCON_UNLOCK signal
54	RR_DOOR_SW	Detects RR_DOOR_SW signal
55	FR_DOOR_SW	Detects FR_DOOR_SW signal
56	FL_DOOR_SW	Detects FL_DOOR_SW signal
57	Not used	---
58	Not used	---
59	IG2_DRL	Detects IG2_DRL signal
60	BACK_LT	Detects BACK_LT signal
61	Not used	---
62	DR_DOOR_UNLOCK_RELAY_CL-	Outputs DR_DOOR_UNLOCK_RELAY_CL- signal
63	DOOR_UNLOCK_RELAY_CL-	Outputs DOOR_UNLOCK_RELAY_CL- signal
64	DOOR_LOCK_RELAY_CL-	Outputs DOOR_LOCK_RELAY_CL- signal

*:'22-24

Terminal number	Terminal name	Description
65	R_TURN	Outputs R_TURN signal
66	L_TURN	Outputs L_TURN signal

*:'22-24

Body Control Module Connector C (66P) (female terminals)

Courtesy of HONDA, U.S.A., INC.

Terminal number	Terminal name	Description
1	Not used	---
2 *2	RF_GND	RF_GND signal
3	Not used	---
4	Not used	---
5	Not used	---
6 *4	WAC_SW(+)	Detects WAC_SW(+) signal
7	Not used	---
8	Not used	---
9 *1	TS_RR_R	Detects TS_RR_R signal
10 *1	DL_RR_R	Detects DL_RR_R signal
11 *1	VOUT_RR_R	Outputs VOUT_RR_R signal
12	EXT_RR_R-	Outputs EXT_RR_R- signal
13	EXT_RR_R+	Outputs EXT_RR_R+ signal
14	EXT_TR-	Outputs EXT_TR- signal
15	EXT_TR+	Outputs EXT_TR+ signal
16	T/G_LOCK_SW	Detects T/G_LOCK_SW signal
17 *2	RF_DATA1	Communication line
18	Not used	---

*1: With keyless access function *2: With remote engine start*3: With hands free access power tailgate *4: With walk away close power tailgate

Terminal number	Terminal name	Description
19	YOP_DR_WELCOME_LT	Outputs YOP_DR_WELCOME_LT signal
20 *3	HFA_SIG	Detects HFA_SIG signal
21	EXT_M-	Outputs EXT_M- signal
22	EXT_M+	Outputs EXT_M+ signal
23 *1	TS_RR_L	Detects TS_RR_L signal
24 *1	DL_RR_L	Detects DL_RR_L signal
25 *1	VOUT_RR_L	Outputs VOUT_RR_L signal
26	EXT_RR_L-	Outputs EXT_RR_L- signal
27	EXT_RR_L+	Outputs EXT_RR_L+ signal
28	EXT_R-	Outputs EXT_R- signal
29	EXT_R+	Outputs EXT_R+ signal
30	TS_FR_DR	Detects TS_FR_DR signal
31	DL_FR_DR	Detects DL_FR_DR signal
32	Not used	---
33	EXT_FR_DR-	Outputs EXT_FR_DR- signal
34	EXT_FR_DR+	Outputs EXT_FR_DR+ signal
35	Not used	---
36	Not used	---
37	Not used	---
38	Not used	---
39	Not used	---
40	Not used	---
41	ESL_PWR	Outputs ESL_PWR signal
42	IGN_TRX	Communication line
43	Not used	---
44	Not used	---
45	STS	Outputs STS signal
46	EXT_FR_AS-	Outputs EXT_FR_AS- signal
47	EXT_FR_AS+	Outputs EXT_FR_AS+ signal
48	TS_FR_AS	Detects TS_FR_AS signal
49	DL_FR_AS	Detects DL_FR_AS signal
50	VOUT_FR_AS	Outputs VOUT_FR_AS signal
51	CONT_RLY_GND	Ground for IG1A/IG1B/IG2/ACC relay circuits
52	IG1-A_SIG	Detects IG1-A_SIG signal
53	IG1-B_SIG	Detects IG1-B_SIG signal
54	IG2_SIG	Detects IG2_SIG signal
55	ACC_RLY_CL+	Outputs ACC_RLY_CL+ signal
56	IG2_COIL+	Outputs IG2_COIL+ signal
57	IG1_COIL+	Outputs IG1_COIL+ signal
58	H-BRAKE_SW	Detects H-BRAKE_SW signal
59	EXT_F-	Outputs EXT_F- signal
60	EXT_F+	Outputs EXT_F+ signal
61	START_SW_ILL	Outputs START_SW_ILL signal
62	START_SW_IND1	Outputs START_SW_IND1 signal
63	SSSW_LF_ANT-	Outputs SSSW_LF_ANT- signal
64	SSSW_LF_ANT+	Outputs SSSW_LF_ANT+ signal
65	SS1(+)	Detects SS1(+) signal

*1: With keyless access function *2: With remote engine start*3: With hands free access power tailgate *4: With walk away close power tailgate

Terminal number	Terminal name	Description
66	SS2(-)	Detects SS2(-) signal

*1: With keyless access function *2: With remote engine start*3: With hands free access power tailgate *4: With walk away close power tailgate

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.