Signal Specification

All the values given below are between the terminals stated in column 1 and terminal #D6 in column 2 (power ground). This applies unless otherwise indicated in the last column.

NOTE: It is important that the breakout box is connected and that the ground connections have been checked before starting to measure.

Fig 1: Identifying Breakout Box

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Connector A

Courtesy of VOLVO CARS CORPORATION

U=	DC voltage in volts (V)	t =	Time in milliseconds (ms)
U_bat =	Battery voltage (V)	f =	Frequency in Hertz (Hz)
U_low =	Voltage approximately 0 V	% duty	Duty cycle (pulse ratio) as a percentage (%)

Connector A
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#1	#A1	Reserve	-	-	-
#2	#A2	Reserve	-	-	-
#3	#A3	Extended X-supply (3)	U_low	U_bat (Ignition switch position I & II)	XC90, Infotainment.
#4	#A4	Bifuel, power supply to the rear electronic module (REM)	U_low	U_bat (Ignition switch position II & III)	-
#5	#A5	Reserve	-	-	-
#6	#A6	X supply (Voltage supply from ignition switch)	U_low	U_bat (Ignition switch position I & II)	RTI/Radio
#7	#A7	Reserve	-	-	-
#8	#A8	15-supply (Power supply from ignition switch)	U_low	U_bat (Ignition switch position II & III)	-
#9	#A9	Reserve	-	-	-
#10	#A10	Extended X-supply (1)	U_bat	U_bat	Certain climate functions
#11	#A11	Reserve	-	-	-
#12	#A12	Left turn signal lamp	U_low	U_low -U_bat (Ignition position II) / U_low	Pulsed signal, f = approximately 1.5 Hz
#13	#A13	Reserve	-	-	-
#14	#A14	Reserve	-	-	-
#15	#A15	Stop lamps, power supply	U_bat /U_low	U_bat /U_low	Does not go to the centrally located brake light (CAN-signal)
#16	#A16	Fuel pump (FP), power supply	U_low	U_bat /U_low	-
#17	#A17	Cigarette lighter, power supply	U_low	U_bat	-
#18	#A18	Passenger seat heater, power supply	U_bat	U_bat	-
#19	#A19	Driver seat heater, power supply	U_bat	U_bat	-
#20	#A20	Collision signal	U_low	U_bat /U_bat	Active in the event of a collision
#21	#A21	Reserve	-	-	-
#22	#A22	Power passenger seat, power supply	U_low	U_bat	-
#23	#A23	Circulation pump saddle tank, voltage feed	U_low	U_bat /U_low	Only applies to vehicles from model year 2007
#24	#A24	Reserve	-	-	-
#25	#A25	Extended X-supply (2)	U_bat	U_bat	U_bat for 10 seconds after the key is removed, then Ulow Gear selector module (GSM).
#26	#A26	Reserve	-	-	-
#27	#A27	Steering wheel angle sensor module (SAS), power supply	U_low	U_bat (Ignition switch position II & III)	-
#28	#A28	Reserve	-	-	-
#29	#A29	Rear right-hand turn signal lamp, power supply	U_low	U_low -U_bat (Ignition position II) / U_low	Pulsed signal, f = approximately 1.5 Hz
#30	#A30	Reserve	-	-	-
#31	#A31	Reserve	-	-	-
#32	#A32	Reserve	-	-	-

Fig 3: Identifying Connector B

Courtesy of VOLVO CARS CORPORATION

Connector B
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#1	#B1	Contact breaker, vacuum pump	U_low	U_bat (Ignition switch position II & III)	-
#2	#B2	30-supply to the central electronic module (CEM)	U_bat	U_bat	Right low beam
#3	#B3	30-supply to the central electronic module (CEM)	U_bat	U_bat	Left low beam
#4	#B4	Right low beam	U_low	U_bat /U_low	Ulow when turning the engine
#5	#B5	Reserve	-	-	-
#6	#B6	Reserve	-	-	-
#7	#B7	Left low beam	U_low	U_bat /U_low	Ulow when turning the engine
#8	#B8	Daytime running lamps left	U_bat /U_low	U_bat /U_low	-
#9	#B9	Daytime running lamps right	U_bat /U_low	U_bat /U_low	-
#10	#B10	Extended X-supply (1)	U_bat	U_bat	Parking heater. Certain climate control functions.
#11	#B11	30-supply to the stop lamp switch	U_bat	U_bat	-
#12	#B12	Reserve	-	-	-
#13	#B13	Reserve	-	-	-
#14	#B14	Reserve	-	-	-
#15	#B15	Power supply to the horn	U_bat /U_low	U_bat /U_low	-
#16	#B16	30-supply, fuel pump (FP)	U_bat	U_bat	-
#17	#B17	Front fog lamp, left	U_low	U_bat /U_low	-
#18	#B18	Front fog lamp, right	U_low	U_bat /U_low	-
#19	#B19	Headlamp washer	U_low	U_bat (Ignition switch position I & II)	-
#20	#B20	Extended X-supply (2)	U_bat	U_bat	Ubat for 10 seconds after the key is removed, then Ulow Transmission control module (TCM)
#21	#B21	Front washer motor	U_low	U_bat /U_low	-
#22	#B22	Power supply ABS/DSTC	U_low	U_bat (Ignition switch position II & III)	-
#23	#B23	Voltage supply headlamp alignment	U_low	U_bat at ignition switch positions II and III/U _low	-
#24	#B24	Power supply to the parking lamps	U_bat	U_bat	-
#25	#B25	Siren control module (SCM)	U_bat /U_low	U_bat /U_low	-
#26	#B26	30-supply to the engine control module (ECM)	U_bat	U_bat	-
#27	#B27	Full beam, left	U_bat /U_low	U_bat /U_low	-
#28	#B28	High beam, right	U_bat /U_low	U_bat /U_low	-
#29	#B29	Rear washer motor	U_low	U_bat /U_low	-
#30	#B30	Headlamp washer	U_low	U_bat /U_low	-
#31	#B31	Left turn signal lamp	U_low	U_low -U_bat / U _low	-
#32	#B32	Right turn signal lamp	U_low	U_low -U_bat / U _low	-

Fig 4: Identifying Connector C

Courtesy of VOLVO CARS CORPORATION

Connector C
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#1	#C1	Status signal from the left-hand gas discharge lamp module (GDL)	U_low	U_bat minus approx. 1.5 V in ignition position II, U_bat in ignition position I; regardless of being active/not active	-
#2	#C2	Status signal from the right-hand gas discharge lamp module (GDL)	U_low	U_bat minus approx. 1.5 V in ignition position II, U_bat in ignition position I; regardless of being active/not active	-
#3	#C3	Windshield wiper, high speed	U_low	U_low if wipers not on; U_bat only when wipers move intermittently; U_bat when wipers move continuously at low speed; U_low when the wipers move at high speed	-
#4	#C4	Windshield wipers Off/On	Ubat	U_bat if the wipers are not on; U _low only during intermittent wiping; U _low when low speed wiping; U_low during high speed wiping	-
#5	#C5	50-supply to the engine control module (ECM)	U_low	U_bat only in ignition switch position III	-
#6	#C6	Starter motor relay	U_low	U= 2.7 V	-
#7	#C7	Control signal, starter motor relay	U_low	U_bat /U_low	U_bat in ignition switch position 3, otherwise U _low
#8	#C8	Reserve	-	-	-
#9	#C9	Auxiliary lamps	U_low	U_bat /U_low	-
#10	#C10	Washer fluid level sensor	U_bat if the tank is not empty; U_low if less than 1 litre.		-
#11	#C11	Control signal for the right-hand headlamp alignment motor	U_low	U_bat /U_low	-
#12	#C12	Control signal for the left-hand headlamp alignment motor	U_low	U_bat /U_low	-
#13	#C13	Reserve	-	-	-
#14	#C14	15-supply to the engine control module (ECM)	U_low	U_bat (Ignition switch position II & III) / U _low otherwise	-
#15	#C15	Wake up signal to ECM	U = 0V/U_bat .	Ignition position I: U = 0V/Ubat. Ignition position II & III: U = Ubat	U_bat a time after ignition position 0 or I has been selected. Then 0 V.
#16	#C16	LIN bus communication	During communication the voltage is 0V - Ubat		-
#17	#C17	Speed signal	U_low	U_low -U_bat	Frequency signal, increases with speed
#18	#C18	Reserve	-	-	-
#19	#C19	Parking lamps, left-hand front	U_bat /U_low	U_bat /U_low	-
#20	#C20	Parking lamps, right front	U_bat /U_low	U_bat /U_low	-
#21	#C21	Communication CAN_H high speed network	The voltage is 2.0-3.5 V during communication		-
#22	#C22	Communication CAN_L high speed network	The voltage is 1.5-2.5 V during communication		-
#23	#C23	Communication CAN_H high speed network	The voltage is 2.0-3.5 V during communication		Brake control module
#24	#C24	Communication CAN_L high speed network	The voltage is 1.5-2.5 V during communication		Brake control module
#25	#C25	High-pressure cleaning pump	U_bat	U_low / U_bat	-
#26	#C26	Reserve	-	-	-
#27	#C27	Reserve	-	-	-
#28	#C28	Control signal, gear selector module (GSM) P/N position	-	U_bat /U_low	-
#29	#C29	Reserve	-	-	-
#30	#C30	Reserve	-	-	-
#31	#C31	Input signal, windshield wipers	U= 10.9 V	U_low as long as the wiper arm is not in the start position. When the wiper arm is in the start position, the voltage increases to U = 10.9 V/Not active: U= 10.9 V	-
#32	#C32	Volcano Lite CAN H	The voltage is 8.5-9.5 V during communication		-
#33	#C33	Reserve	-	-	-
#34	#C34	Stop lamp switch signal	U_bat /U_low	U_bat /U_low	-
#35	#C35	Stop lamp switch signal	U_bat /U_low	U_bat /U_low	-
#36	#C36	Reserve	-	-	-

Fig 5: Identifying Connector D

Courtesy of VOLVO CARS CORPORATION

Connector D
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#1	#D1	Courtesy lighting left front	U_low -U_bat / U _low	U_low -U_bat / U _low	Pulsed signal, f = approximately 100 Hz.
#2	#D2	Courtesy lighting right front	U_low -U_bat / U _low	U_low -U_bat / U _low	Pulsed signal, f = approximately 100 Hz.
#3	#D3	Courtesy lighting, left rear	U_low -U_bat / U _low	U_low -U_bat / U _low	Pulsed signal, f = approximately 100 Hz.
#4	#D4	Courtesy lighting, right rear	U_low -U_bat / U _low	U_low -U_bat / U _low	Pulsed signal, f = approximately 100 Hz.
#5	#D5	Reserve	-	-	-
#6	#D6	Power ground	U _low /U_low		-
#7	#D7	Windshield wipers (Limp Home)	U_bat /U_low	U_bat /U_low	-
#8	#D8	X supply (Voltage supply from ignition switch)	U _bat (Ignition switch positions I and II); U_low otherwise		-
#9	#D9	Signal (+) glove compartment lighting	U_bat	U_bat	30 minutes after the ignition is switched off, U_low
#10	#D10	Seat position sensor, driver	U_bat /	U_bat /	-
#11	#D11	Rain sensor	U_low / U_bat	U_low / U_bat	-
#12	#D12	Pulse width modulated signal (+) to rheostat	U_low -U_bat if active, U_low otherwise		-
#13	#D13	Signal (+) ignition switch illumination	U_bat /U_low	U_bat /U_low	-
#14	#D14	Lamp, switch, hazard warning signal flashers, power supply.	U_bat -U _low if activated; U_low otherwise		-
#15	#D15	S-supply (Power supply from ignition switch)	U _bat (Ignition switch positions 0, I, II and III); U_low otherwise		U_low with key removed.
#16	#D16	15-supply (Power supply from ignition switch)	U _bat (Key in positions II and III); U_low otherwise		-
#17	#D17	Signal (-) from horn switch	U_low /U_bat	U_low /U_bat	-
#18	#D18	Seat position sensor, passenger	U_low	U_bat	Reference.
#19	#D19	Collision output signal to the phone (from the Supplemental Restraint System Module (SRS))	-	-	-
#20	#D20	Signal (-) from the SRS-control module (airbag OK)	U_bat below 200 ms if the airbag is triggered, U _low if the airbag has not deployed.		-
#21	#D21	Reserve	-	-	-
#22	#D22	Signal (-) switch for the hazard warning signal flasher.	U_low if button is held in, U_bat otherwise		-
#23	#D23	Gear-shift position sensor	U_low	U_low / U_bat	U_low in positions P and N
#24	#D24	LIN bus communication	During communication the voltage is 0V - Ubat		-
#25	#D25	Seat position sensor, driver	-	-	(Only XC90 USA/CDN)
#26	#D26	Seat position sensor, passenger	-	-	(Only XC90 USA/CDN)
#27	#D27	Sensor, set belt reminder (+)	U_low / U_bat	U_bat /U_bat	-
#28	#D28	Sensor, seat belt reminder (-)	U _low /U_low	U _low /U_low	-
#29	#D29	Twilight sensor	U _low /U_low	U=0.25-4.75V	-
#30	#D30	Sun sensor	U _low /U_low	U=0.25-4.75V	-
#31	#D31	Communication CAN_H high speed network	The voltage is 2.0-3.5 V during communication		-
#32	#D32	Communication CAN_H high speed network	The voltage is 2.0-3.5 V during communication		-
#33	#D33	Communication CAN_H high speed network	The voltage is 2.0-3.5 V during communication		OBD out
#34	#D34	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		-
#35	#D35	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		-
#36	#D36	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		-
#37	#D37	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		Via SRS
#38	#D38	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		Via UEM
#39	#D39	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		Via DDM
#40	#D40	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication		OBD out
#41	#D41	Volcano Lite CAN H	The voltage is 8.5-9.5 V during communication		-
#42	#D42	The sun sensor, twilight sensor and alarm LED share a common ground	U _low /U_low	U _low /U_low	-
#43	#D43	Fuel level sensor, left-hand side (+). Switched signal, 5/35 ms.	U~U_low	U=0.54-3.96 V	Full: 0.54 V Empty: 3.96 V
#44	#D44	Fuel level sensor, right-hand side (+). Switched signal, 5/35 ms.	U~U_low	U=0.54-3.96 V	Full: 0.54 V Empty: 3.96 V
#45	#D45	Fuel level sensor common ground	U _low /U_low	U _low /U_low	-
#46	#D46	Communication CAN_L high speed network	The voltage is 1.5-2.5 V during communication		-
#47	#D47	Communication CAN_L high speed network	The voltage is 1.5-2.5 V during communication		-
#48	#D48	Communication CAN_L high speed network	The voltage is 1.5-2.5 V during communication		OBD
#49	#D49	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		-
#50	#D50	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		-
#51	#D51	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		-
#52	#D52	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		Via SRS
#53	#D53	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		Via UEM
#54	#D54	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		Via DDM
#55	#D55	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication		OBD out
#56	#D56	IMMO Data	U _low /U_low	The voltage is 0.5-2.5 V during communication	Antenna ring/lighting ignition switch
#57	#D57	IMMO Clock	U _low /U_low	The voltage is 0.5-2.5 V during communication	Antenna ring/lighting ignition switch
#58	#D58	LIN bus 2	During communication the voltage is 0 V - U _bat		SWM/SAS
#59	#D59	Speed signal	U_low	U_low -U_bat	Output signal Frequency signal, increases with speed
#60	#D60	50-supply (Power supply from ignition switch)	U _bat (Key in position III); U_low otherwise		-