See «Connecting the breakout box. Accessory electronic module»(ref-440219-S26823292672011121400000)
See «Checking the ground terminal»(ref-440219-S12190884442011121400000)

U=	DC voltage in volts (V)	U AC =	AC voltage in volts (V)
U bat =	Battery voltage (V)	F =	Frequency in Hertz (Hz)
U low =	Voltage approximately 0 V	% duty =	Duty cycle (pulse ratio) as a percentage (%)
T =	Time in milliseconds (ms)

Connector A, terminals #A1-#A4 The following values are measured between the relevant terminal in column 1 and terminal #A1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box.

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Terminal in the breakout box	Terminal in connector	Signal type	Ignition off		Ignition on		Other
			Activated	Not activated	Activated	Not activated
#51	#A1	Power ground	U low	U low	U low	U low
#52	#A2	30-supply to the accessory electronic module	U bat	U bat	U bat	U bat
#53	#A3	Communication CAN L low speed network	1.5-2.5 V		1.5-2.5 V		1.5 V, at communication
#54	#A4	Communication CAN_H low speed network	2.5-3.5 V		2.5-3.5 V		3.5 V, at communication

Connector B, terminals #B1 - #B50 The following values are measured between the relevant terminal in column 1 and terminal #A1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box.

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Terminal in the breakout box	Terminal in connector	Signal type	Ignition off		Ignition on		Other
			Activated	Not activated	Activated	Not activated
#1	#B1	Remote start, power supply	U bat	U bat	U bat	U bat	Remote start module always activated
#2	#B2	Remote start, ground	U low	U low	U low	U low
#3	#B3	Remote start, digital input signal	U low	U=3 V or U=5 V	U low	U=3 V or U=5 V	Pulses with variable time periods
#4	#B4	Electric engine block heater, ground	U low	U low	U low	U low
#5	#B5	Electric engine block heater, control signal	U bat	U low	U bat	U low
#6	#B6	Reverse (reversing) warning system, power supply	U low	U low	U bat	U low	NOTE: Does not apply to S80 2004
#7	#B7	Reverse (reversing) warning system buzzer, digital input signal	U bat	U bat	U low	U bat	NOTE: Does not apply to S80 2004
#8	#B8	Reverse (reversing) warning system, ground	U low	U low	U low	U low	NOTE: Does not apply to S80 2004
#9	#B9
#10	#B10
#11	#B11	Car phone mute, digital input signal	U bat	U bat	U low	U bat
#12	#B12	Mute signal (radio), digital output signal	U bat	U bat	U low	U bat
#13	#B13	Rheostat signal (radio), digital output signal	U low	U low	PWM = 6.3%-100%	PWM = 6.3%-100%	Pulse width modulation (PWM) signal
#14	#B14	Speed signal (radio), digital output signal	U bat	U bat	PWM = 30%-70%	PWM = 30%-70%	Pulse width modulation (PWM) signal
#15	#B15	Alarm signal P0, digital output signal	U low	U bat	U bat	U bat	Status "Ignition off " on condition the ignition key is out
#16	#B16	Alarm signal P1, digital output signal	U low	U bat	U bat	U bat	Status "Ignition off " on condition the ignition key is out
#17	#B17
#18	#B18
#19	#B19
#20	#B20
#21	#B21
#22	#B22
#23	#B23
#24	#B24
#25	#B25
#26	#B26
#27	#B27
#28	#B28
#29	#B29
#30	#B30	Aerial amplifier, power supply	U low	U low	U bat	U bat	U=U bat at ignition key position I
#31	#B31
#32	#B32
#33	#B33	Alarm signal S0, digital output signal	U bat	U bat	U low	U bat
#34	#B34	Alarm signal P1, digital output signal	U low	U low	U bat	U low
#35	#B35
#36	#B36
#37	#B37
#38	#B38
#39	#B39
#40	#B40
#41	#B41
#42	#B42
#43	#B43
#44	#B44
#45	#B45
#46	#B46
#47	#B47
#48	#B48
#49	#B49
#50	#B50

NOTE
Does not apply to S80 2004

NOTE
Does not apply to S80 2004

NOTE
Does not apply to S80 2004

Scheme 254

Scheme 254: Signal specification

Note. It is important to connect the breakout box and check the ground terminals before taking readings.

Other information

To connect the breakout box, see «Connecting the breakout box»(ref-440219-S11168147052011121400000)
To check ground terminals, see «Checking the ground terminal»(ref-440219-S41047593572011121400000) .

U=	DC voltage in volts (V)	U AC =	AC voltage in volts (V)
U bat =	Battery voltage (V)	F =	Frequency in Hertz (Hz)
U low =	Voltage approximately 0 V	% duty =	Duty cycle (pulse ratio) as a percentage (%)
T =	Time in milliseconds (ms)

Connector A, terminals #A1-#A20 The following values are measured between the relevant terminal in column 1 and terminal #E1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Breakout box terminal	Terminal in connector	Signal type	Ignition off		Ignition on		Other
			Activated	Not activated	Activated	Not activated
#A1	#A1	Signal (-) back-up (reversing) lamp	Ulow	Ubat	Ulow	Ubat
#A2	#A2	Signal, for fault-tracing the actuator motor for the left-hand xenon lamp	Ulow	Ulow	Ulow-Ubat if active, Ulow otherwise in pulse ratio (% duty) = 0-100%		A fault is detected at 65%> pulse ratio (% duty) > 90%
#A3	#A3	Control signal, starter motor relay			0 V	0 V	Activated with key in position III
#A4	#A4	Signal, Hood switch	Ulow with the hood closed Ulow-Ubat with the hood open				Pulsed signal, f=100 Hz
#A5	#A5	Signal (-) L-signal	Ulow	Ulow	Ubat	U~0.3-0.7*Ubat
#A6	#A6	Stepper motor speed related power steering (channel B)	Ulow		Ulow-Ubat	Ulow	Signal for 12 ms
#A7	#A7	Stepper motor speed related power steering (channel A)	Ulow		Ulow-Ubat	Ulow	Signal for 12 ms
#A8	#A8	Reference voltage, beam adjustment unit	Ulow		Ubat		Model years prior to 2000
#A9	#A9	Pulse width modulated signal (+) to beam adjustment unit	Ulow		Ulow-Ubat if active, Ulow otherwise Pulse ratio (% duty) > 0%		Pulse ratio increases with increased beam width
#A10	#A10	Reference ground, beam adjustment unit	Ulow				Model years prior to 2000
#A11	#A11	Stepper motor speed related power steering (channel B)	Ulow		Ulow-Ubat	Ulow	Signal for 12 ms
#A12	#A12	Stepper motor speed related power steering (channel A)	Ulow		Ulow-Ubat	Ulow	Signal for 12 ms
#A13	#A13	Control signal, windshield wiper relay off/on	Ubat		Ulow	Ubat
#A14	#A14	Control signal, windshield wiper high speed relay	Ubat		Ulow	Ubat
#A15	#A15	Glass breakage loop, pulsed signal	0-12 V		Ulow	Ulow	0-12 V periodically when the car is alarmed
#A16	#A16	Control signal, front washer motor relay	Ubat		Ulow	Ubat
#A17	#A17	Control signal, rear washer motor relay	Ubat		Ulow	Ubat	(5 DRS)
#A18	#A18	Volcano Lite	The voltage is 0 V - Ubat during communication				Serial communication
#A19	#A19	Control signal, horn relay	Ulow	Ubat	Ulow	Ubat
#A20	#A20	Signal (-), starter motor relay	Ulow		Ubat	Ulow

Connector B, terminals #B1 - #B20 The following values are measured between the relevant terminal in column 1 and terminal #E1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Breakout box terminal	Terminal in connector	Signal type	Ignition off		Ignition on		Other
			Activated	Not activated	Activated	Not activated
#A21	#B1	S-supply (Power supply from ignition switch)	Ulow (Key out), Ubat (key in)
#A22	#B2	X-supply (Power supply from the ignition switch)	Ubat (Key in positions I and II); Ulow otherwise
#A23	#B3	15-supply (Power supply from ignition switch)	Ubat (Key in positions II and III); Ulow otherwise
#A24	#B4	Stop lamp switch signal	Ubat	Ulow	Ubat	Ulow
#A25	#B5	Supply upper stop lamp (4 door)	Ubat	6 V	Ubat	6 V
#A26	#B6	Supply to stop lamp relay in the rear electronic module (REM)	Ulow	Ubat	Ulow	Ubat
#A27	#B7	Diagnostic communication (CAN H) for the high speed network	The voltage is 2.0-3.5 V during communication
#A28	#B8	Diagnostic communication (CAN_L) for the high speed network	The voltage is 1.5-2.5 V during communication
#A29	#B9	Signal (-) sensor for the front left seat belt buckle	Ulow		0-5 V	0-5 V
#A30	#B10	Reference voltage (+) for X-supply to the left seat belt buckle	Ulow		Ubat
#A31	#B11	Serial communication the left heated seat	Ulow		During communication voltage is ~Ubat
#A32	#B12	Signal (-) contact breaker (left rear door open)	Ulow-Ubat if the door is open, Ulow otherwise				Pulsed signal, f=100 Hz.
#A33	#B13	Signal (-) contact breaker (left rear door locked)	Ulow if the door is locked, Ubat otherwise
#A34	#B14	Frequency signal (-) from the engine control module (ECM) for the fuel pump (FP) relay	Ulow		Frequency signal U=Ulow-Ubat		F=50 HZ
#A35	#B15	Signal (-) from the windshield washer reservoir level sensor	Ubat if the tank is not empty, Ulow if under 1 liter.
#A36	#B16	Signal (-) from the windshield wiper motor	Ulow	Ubat	Ulow	Ubat	Ulow if the engine is running
#A37	#B17	Communication CAN_H high speed network	The voltage is 2.0-3.5 V during communication
#A38	#B18	Communication CAN_L high speed network	The voltage is 1.5-2.5 V during communication
#A39	#B19	Diagnostic communication (CAN_H) for the low speed network	The voltage is 2.0-3.5 V during communication
#A40	#B20	Diagnostic communication (CAN_L) for the low speed network	The voltage is 1.5-2.5 V during communication

Connector C, terminals #C1-#C20 The following values are measured between the relevant terminal in column 1 and terminal #E1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Breakout box terminal	Terminal in connector	Signal type	Ignition off		Ignition on		Other
			Activated	Not activated	Activated	Not activated
#A41	#C1	Reference voltage (+) for X-supply to the right seat belt buckle	Ulow		Ubat
#A42	#C2	Signal (-) sensor for the front right seat belt buckle	Ulow		0-5 V	0-5 V
#A43	#C3	Signal (-) contact breaker (right rear door locked)	Ulow if the door is locked, Ubat otherwise
#A44	#C4	Serial communication right heated seat	Ulow		During communication voltage is ~Ubat
#A45	#C5	Signal (-) Lock unit trunk lid	Ulow-Ubat if the tailgate is open, Ulow otherwise				Pulsed signal, f=100Hz.
#A46	#C6	Control signal, auxiliary lamp relay		Ubat	Ulow	Ubat
#A47	#C7
#A48	#C8
#A49	#C9
#A50	#C10
#A51	#C11
#A52	#C12
#A53	#C13
#A54	#C14	Signal (-) fuel pump (FP) relay switch		Ulow	Ubat	Ulow
#A55	#C15
#A56	#C16
#A57	#C17
#A58	#C18	Signal (-) contact breaker (right rear door open)	Ulow-Ubat if the door is open, Ulow otherwise				Pulsed signal, f=100 Hz.
#A59	#C19
#A60	#C20	Reserve (-)

Connector D, terminals #D1-#D20 The following values are measured between the relevant terminal in column 1 and terminal #E1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Breakout box terminal	Terminal in connector	Signal type	Ignition off		Ignition on		Other
			Activated	Not activated	Activated	Not activated
#B1	#D1	Control signal automatic Gear selector module (GSM), switch to ground			Ubat	Ulow
#B2	#D2	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication
#B3	#D3	Communication CAN_H low speed network	The voltage is 2-3.5 V during communication
#B4	#D4	Signal (-) from control stalks (Limp Home)	Ubat	Ulow	Ubat	Ulow
#B5	#D5	Signal (-) from the SRS-control module (airbag OK)	Ubat for 200 ms if the airbag is triggered, Ulow if the airbag is not triggered.
#B6	#D6	Serial communication (K-line), diagnostic	The voltage is 0 V - Ubat during communication
#B7	#D7	Signal (-) contact breaker (left front door open)	Ulow-Ubat if the door is open, Ulow otherwise.				Pulsed signal, f=100 Hz.
#B8	#D8	Signal (-) contact breaker (right front door open)	Ulow-Ubat if the door is open, Ulow otherwise.				Pulsed signal, f=100Hz.
#B9	#D9	Signal (-) from the gear-shift position sensor (locked in P/N)	Ulow	Ulow	Ulow	Ubat	Ulow in P and N position
#B10	#D10	Signal (+), speed (frequency signal)	Ulow		Ulow-Ubat		Frequency signal increases with speed
#B11	#D11	Signal, for fault-tracing the actuator motor for the right-hand xenon lamp	Ulow	Ulow	Ulow-Ubat if active, Ulow otherwise in pulse ratio (% duty)=0-100%		A fault is detected at 65%>pulse ratio (%duty)>90%
#B12	#D12	Signal (-) from horn switch	Ulow	Ubat	Ulow	Ubat
#B13	#D13	Signal (+) data Immobilizer	Ulow		Ubat
#B14	#D14	Signal (+) Immobilizer	Ulow		Ubat
#B15	#D15
#B16	#D16	Signal (-) switch for the hazard warning signal flasher	Ulow if the button is held in, Ubat otherwise
#B17	#D17	Pulse width modulated signal (+) lamp in button for hazard warning signal flasher	Ulow-Ubat if active, Ulow otherwise Pulse ratio (% duty) > 0 %
#B18	#D18	Signal (+) glove compartment lighting	Ubat				30 minutes after ignition off, Ulow
#B19	#D19	Signal (+) ignition switch illumination	Ubat	Ulow	Ubat	Ulow
#B20	#D20	Signal (+) Alarm indicator LED	Ulow or 0.7 V		Ulow		0.7 V if the LED is active

Connector E, terminals #E1-#E8 The following values are measured between the relevant terminal in column 1 and terminal #E1 (power ground) unless otherwise stated. NOTE: Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V

NOTE
Check the ground terminals before starting to take readings with the breakout box.

Breakout box terminal	Terminal in connector	Signal type	Ignition off		Ignition on
			Activated	Not activated	Activated	Not activated
#B21	#E1	Power ground	Ulow
#B22	#E2	Pulse width modulated signal (+) courtesy lighting	Ulow-Ubat if active, Ulow otherwise
#B23	#E3	30-supply to turn signal lamps and hazard warning signal flasher	Ubat
#B24	#E4
#B25	#E5
#B26	#E6	30-supply to the central electronic module (CEM)	Ubat
#B27	#E7
#B28	#E8	Pulse width modulated signal (+) to rheostat	Ulow-Ubat if active, Ulow otherwise

Signal specification

General

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.

Scheme 255

Scheme 255: Signal specification

Scheme 256

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

Scheme 257

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

Scheme 258

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 liter.
#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 = 0 V/U bat .	Ignition position I: U = 0 V/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 0 V - 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

Scheme 259

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 0 V - 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=0.25-4.75 V
#30	#D30	Sun sensor	U low /U low	U=0.25-4.75 V
#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

General

All values given below are between the respective terminal in column 1 and terminal #3 (power ground) unless otherwise stated in brackets after the entry. Control module terminals #1-#16 correspond to terminals #1-#16 on the breakout box.

Note. It is important to connect the breakout box and check the ground terminals before taking readings.

U=	DC voltage in volts (V)	U AC =	AC voltage in volts (V)
U bat =	Battery voltage (V)	F =	Frequency in Hertz (Hz)
U low =	Voltage approximately 0 V	% duty =	Duty cycle (pulse ratio) as a percentage (%)
T =	Time in milliseconds (ms)

Terminal	Signal type	Ignition on	Engine idling	Other
#1	Glow plug signal	Glow plug off: U=U low Glow plug on: Pulse ratio (% duty) > 0%		Pulse ratio (% duty) increases with glow plug intensity.
#2
#3	Power ground (Measured to the battery negative terminal)	U low
#4	Signal ground, engine coolant temperature sensor and flame sensor	U low
#5
#6	Communication cable for the central electrical module (CEM)		Digital signal
#7
#8	Flame sensor signal	Flame not lit: Uapprox.5 V Flame lit: U<1.5 V
#9	30-supply (Power supply from battery)	U bat
#10	Combustion fan control signal	Combustion fan off and power supply off: U low Combustion fan off and power supply on: U bat Fan on: Pulse ratio (% duty) > 0%		The pulse ratio (% duty) increases with fan speed.
#11 Model year -2001	Power supply, combustion fan, fuel pump (FP) and water pump	Power supply off: U low Power supply on: U bat
#11 Model year 2002	Power supply, combustion fan and water pump	Power supply off: U low Power supply on: U bat
#12	Water pump control signal	Water pump off and power supply off: U low Water pump off and power supply on: U bat Water pump on and power supply on: U low
#13	Fuel pump control signal	Fuel pump off: f=0 Hz Fuel pump on: f>0 Hz		The frequency increases with pump speed
#14
#15	Extended X-supply	U bat	U bat
#16	Coolant temperature sensor signal	+20°C: Uapprox. 3.5 V +75°C = 2.02 V +90°C = 0.78 V		The voltage decreases with increasing temperature

Scheme 260

Scheme 260: Rear electronic module (REM) connectors A-E

Connector A, terminals #A1-#A20

The following values are measured between the relevant terminal and terminal #E1 (power ground) unless otherwise stated.

The values are measured with the control module in "Active mode".

Note. It is important to connect the breakout box and check the ground terminals before taking readings.

U = DC in volts (V).

Ubat = battery voltage in volts (V).

Ulow = Voltage close to 0 V.

NC = Not connected

NC* = grounded via capacitor (C=22nF)

Terminal, breakout box	Terminal, control module	Signal type	Ignition off Active/not active	Ignition on Active/not active	Other
#A01	#A1	Spare input (30)	U Ubat	U Ubat	At no input
#A02	#A2	Fuel level sensor, left-hand side (+). Switched signal, 5/35 ms.	U Ulow	U=0.54-3.96 V	Full: 0.54 V Empty: 3.96 V For Bi-fuel cars this applies to the LPG gas tank The terminal is not used if the tank is PZEVEVAP or EVAP 2.
#A03	#A3	Reserve output (switch to ground)	U Ulow	U Ulow
#A04	#A4	Stop lamp, relay driver from the central electronic module (CEM)	U Ulow / Ubat	U Ulow / Ubat
#A05	#A5
#A06	#A6	Reserve, analog input signal	NC*	NC*
#A07	#A7	Signal ground (-)	U Ulow	U Ulow
#A08	#A8	Fuel level sensor, right-hand side (+). Switched signal, 5/35 ms.	U Ulow	U=0.54-3.96 V	Full: 0.54 V Empty: 3.96 V
#A09	#A9	Spare input (30)	U Ubat	U Ubat	At no input
#A10	#A10	Fuel level sensor common ground	U Ulow	U Ulow
#A11	#A11	Reserve, analog input signal	NC*	NC*
#A12	#A12	Signal ground (-)	U Ulow	U Ulow
#A13	#A13	Reserve output (switch to ground)	U Ulow	U Ulow
#A14	#A14	CAN H			During communication U= 2.0-3.5 V
#A15	#A15	Volcano Lite CAN H			During communication U= 2.0-3.5 V
#A16	#A16	CAN L			During communication U= 2.0-3.5 V
#A17	#A17	Volcano Lite CAN L			During communication U=2.0-3.5 V
#A18	#A18	Reserve	U Ulow	U Ulow	NC
#A19	#A19	Reserve output (switch to ground)	U Ulow	U Ulow
#A20	#A20
#A21	#B1	Spare input (GND)	U Ulow	U Ulow	At no input
#A22	#B2	Spare input (GND)	U Ulow	U Ulow	At no input
#A23	#B3	Reserve output (switch to ground)	U Ulow	U Ulow
#A24	#B4	Reserve	U Ulow	U Ulow	NC
#A25	#B5	Power supply, fuel level sensor, CNG	U Ulow	U = 5 V	Bi-fuel
#A26	#B6	Signal ground, position sensor for headlamp beam height control	U Ulow	U Ulow
#A27	#B7	Reserve output (switch to ground)	U Ulow	U Ulow
#A28	#B8	Analog input signal from the position sensor for headlamp beam height control.	U Ulow	U=1.7-3.2 V	NC
#A29	#B9	Reserve	U Ulow	U Ulow	NC
#A30	#B10	Power supply, position sensor for headlamp beam height control	U Ulow	U=5 V
#A31	#B11	Reserve	U Ulow	U Ulow	NC
#A32	#B12	Reserve	U Ulow	U Ulow	NC
#A33	#B13	Reserve	U Ulow	U Ulow	NC
#A34	#B14	Reserve	U Ulow	U Ulow	NC
#A35	#B15	Reserve	U Ulow	U Ulow	NC
#A36	#B16	Input signal fuel level sensor (pressure), CNG	U Ulow	U=0.5 V-4.5 V	Full (200 bar): 4.5 V Empty (0 bar): 0.5 V
#A37	#B17	Reserve	U Ulow	U Ulow	NC
#A38	#B18	Reserve	U Ulow	U Ulow	NC
#A39	#B19	Reserve	U Ulow	U Ulow	NC
#A40	#B20	Reserve	U Ulow	U Ulow	NC
#A41	#C1	Input signal, fuel level sensor (temperature), CNG	U~Ulow	U=0 V-5 V	0°C~4 V 25°C~2.5 V
#A42	#C2	Signal ground fuel level sensor, CNG	U Ulow	U Ulow	Bi-fuel
#A43	#C3	Reserve	U Ulow	U Ulow	NC
#A44	#C4
#A45	#C5
#A46	#C6	Reserve output (switch to ground)	U Ulow	U Ulow
#A47	#C7	Reserve	U Ulow	U Ulow	NC
#A48	#C8	Reserve output (switch to ground)	U Ulow	U Ulow
#A49	#C9	Reserve	U Ulow	U Ulow	NC
#A50	#C10	Reserve	U Ulow	U Ulow	NC
#A51	#C11	Reserve output (switch to ground)	U Ulow	U Ulow
#A52	#C12	Reserve output (switch to ground)	U Ulow	U Ulow
#A53	#C13	Reserve	U Ulow	U Ulow	NC
#A54	#C14	Reserve	U Ulow	U Ulow	NC
#A55	#C15	Reserve	U Ulow	U Ulow	NC
#A56	#C16	Reserve	U Ulow	U Ulow	NC
#A57	#C17	Spare input (30)	U Ubat	U Ubat	At no input
#A58	#C18	Spare input (30)	U Ubat	U Ubat	At no input
#A59	#C19	Reserve	U Ulow	U Ulow	NC
#A60	#C20	Reserve output (switch to ground)	U Ulow	U Ulow
#B01	#D1	Relay driver, rear windshield heating	U Ubat	U Ulow / Ubat	Grounded when the relay is activated
#B02	#D2	Relay driver, rear 15l-supply
#B03	#D3	Reserve	U Ulow	U Ulow	NC
#B04	#D4	Signal voltage, high mounted stop lamp	U Ubat / Ulow	U Ubat / Ulow	5 door
#B05	#D5	Reserve	5 V / Ulow	5 V / Ulow	NC
#B06	#D6	Serial communication, input signal from the level sensor control module	During communication U=8-11 V	During communication U=8-11 V	Communicates when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM).
#B07	#D7	Input signal from the tailgate handle	U Ulow / Ubat	U Ulow / Ubat	Applies to 4-door models. Grounded when the tailgate handle is pressed in.
#B08	#D8	Spare input (30)	Ubat	Ubat	At no input
#B09	#D9	Spare input (30)	Ubat	Ubat	At no input
#B10	#D10	Spare input (30)	Ubat	Ubat	At no input
#B11	#D11		U Ulow	U Ulow	NC
#B12	#D12	Reserve, relay RMA 04	U Ulow	U Ulow
#B13	#D13	Reserve, relay RMI 09	U Ulow	U Ulow
#B14	#D14	Reserve, relay RMI 10	U Ulow	U Ulow
#B15	#D15	Reserve, relay RMI 25	U Ulow	U Ulow
#B16	#D16	Relay driver, warm-up cycle diesel filter	U Ulow	U Ulow / Ubat
#B17	#D17	Reserve, relay RST 01	U Ulow	U Ulow
#B18	#D18	Relay driver, rear X-supply
#B19	#D19	Reserve output (switch to ground)	U Ulow	U Ulow
#B20	#D20	Power supply to the tilt sensor. Output signal.	U Ulow / Ubat	U Ulow	Supplied with voltage when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM).

The power signals below are measured between the relevant terminal and terminal #E1 (power ground)

Terminal, breakout box	Terminal, control module	Signal type	Ignition off Active/not active	Ignition on Active/not active	Other
#B21	#E1	Power ground	U Ulow	U Ulow
#B22	#E2	Power supply to the cargo compartment lighting. Output signal.	U Ulow / Ubat	U Ulow / Ubat	Applies to 4-door models. Activated when the trunk lid is open. Goes out after 30 minutes Goes out when driving forward with the trunk lid open. The ignition must be switched off before it lights again. Can be switched off via the upper electronic module (UEM).
#B23	#E3	Reserve	U Ulow	U Ulow	NC
#B24	#E4	Power supply to the rear fog lamp. Input signal.	U Ubat	U Ubat
#B25	#E5	Reserve	U Ulow	U Ulow	NC
#B26	#E6	Power supply to the rear electronic module (REM)	U Ubat	U Ubat
#B27	#E7	Reserve	U Ulow	U Ulow	NC
#B28	#E8	Reserve	U Ulow	U Ulow	NC

Scheme 261

Scheme 261: Resistance values, fuel level sensor

Readings for the left fuel level sensor are taken between terminals #5 and #6.

Readings for the right fuel level sensor are taken between terminals #7 and #6.

The following table lists the fuel level sensor resistance and the corresponding fuel volume.

Resistance (ohm)	Fuel volume (liters)
12	40
38	35
66	30
96	25
130	20
171	15
223	10
297	5
383	1

General

All the values given below are between the terminals stated in column 1 and terminal #D12 in column 2 (power ground). This applies unless otherwise indicated in the last column.

Note. It is important to connect the breakout box and check the ground connections before starting to measure.

Scheme 262

Scheme 262: Signal specification

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	Power window left rear door, up	U bat /U low	U bat /U low	Supplied with voltage via fuse and relay and grounded via relay integrates in Rear electronic module (REM).
#2	#A2	Power window left rear door, down	U bat /U low	U bat /U low	Supplied with voltage via fuse and relay and grounded via relay integrates in Rear electronic module (REM).
#3	#A3	Reserve
#4	#A4	Reserve
#5	#A5	Reserve
#6	#A6	Reserve
#7	#A7	High level stop lamp	U bat /U low	U bat /U low	S60, S80
#8	#A8	Reserve
#9	#A9	Reserve
#10	#A10	Reserve
#11	#A11	Reserve
#12	#A12	Reserve
#13	#A13	Power supply Bi Fuel from the central electronic module (CEM)	U low	U bat (Ignition positions II and III), otherwise U low
#14	#A14	15-power supply differential electronic module (DEM)	U low	U bat (Ignition position II); U bat (Ignition position I and III) if the key has been in ignition position II earlier, otherwise U low in ignition positions I and III
#15	#A15	Defroster rear windshield	U low	U bat /U low	S60, S80
#16	#A16	Defroster rear windshield	U low	U low	S60, S80
#17	#A17	Reserve
#18	#A18	Stop lamp, input signal from the central electronic module (CEM)	U bat /U low	U bat /U low
#19	#A19	Child-proof lock left rear door	U low / U bat	U low / U bat	Supplied with voltage via fuse and relay and grounded via relay integrates in Rear electronic module (REM).
#20	#A20	Right-hand turn signal lamp, input signal from the central electronic module (CEM)	U low	U bat /U low	Pulsed signal, f = approximately 1.5 Hz
#21	#A21	Left-hand turn signal lamp, input signal from the central electronic module (CEM)	U low	U bat /U low	Pulsed signal, f = approximately 1.5 Hz
#22	#A22	Reserve
#23	#A23	Lock motor left rear door, lock signal	U bat /U low	U bat /U low
#24	#A24	Lock motor left rear door, unlock signal	U bat /U low	U bat /U low
#25	#A25	Folding head restraints, left	U low	U bat /U low	S60, S80
#26	#A26	Reserve
#27	#A27	Lock motor double lock left rear door, signal	U bat /U low	U bat /U low
#28	#A28	Reserve
#29	#A29	15-power supply	U low	U bat (Ignition position II), otherwise U low
#30	#A30	15-power supply to the suspension module (SUM)	U low	U bat (Ignition switch position II)
#31	#A31	Reserve
#32	#A32	Ground	U low	U low

Connector B
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#1	#B1	Power window right rear door, up	U bat /U low	U bat /U low	Supplied with voltage via fuse and relay and grounded via relay integrates in Rear electronic module (REM).
#2	#B2	Power window right rear door, down	U bat /U low	U bat /U low	Supplied with voltage via fuse and relay and grounded via relay integrates in Rear electronic module (REM).
#3	#B3	Brake light	U bat /U low	U bat /U low
#4	#B4	Rear fog lamp	U low	U bat /U low
#5	#B5	Reserve
#6	#B6	Reserve
#7	#B7	Back-up (reversing) lamps	U low	U bat /U low
#8	#B8	Reserve
#9	#B9	Lock motor fuel tank filler cap, unlock signal	U bat /U low	U bat /U low
#10	#B10	Right turn signal lamp	U low	U bat /U low	Pulsed signal, f = approximately 1.5 Hz
#11	#B11	Left turn signal lamp	U low	U bat /U low	Pulsed signal, f = approximately 1.5 Hz
#12	#B12	Lock motor right rear door, unlock signal	U bat /U low	U bat /U low
#13	#B13	Reserve
#14	#B14	Reserve
#15	#B15	Heating diesel filter	U low	U bat /U low
#16	#B16	Reserve
#17	#B17	Subwoofer power supply	U bat	U bat	XC90
#18	#B18	Subwoofer power supply	U bat	U bat	XC90
#19	#B19	Power supply infotainment, rear A/C	U low	U bat
#20	#B20	Reserve
#21	#B21	Power supply, parking assistance module (PAM)	U low	U bat
#22	#B22	Power supply accessory electronic module (AEM)	U bat	U bat
#23	#B23	Right-hand back-up lamp	U low	U bat /U low
#24	#B24	Lock motor double lock right rear door, signal	U bat /U low	U bat /U low
#25	#B25	Gas tank valve, power supply	U low	U bat /U low
#26	#B26	Lock motor fuel tank filler cap/right rear door, lock signal	U bat /U low	U bat /U low
#27	#B27	Power supply RTI, CD changer	U bat	U bat
#28	#B28	Folding head restraints, right	U low	U bat /U low	S60, S80
#29	#B29	X-power supply	U low	U bat (Ignition positions I and II), otherwise U low
#30	#B30	Child-proof lock right	U bat	U low / U bat	Supplied with voltage via fuse and relay and grounded via relay integrates in Rear electronic module (REM).
#31	#B31	Rear 12 V output, power supply	U bat	U bat
#32	#B32	Reserve

Scheme 263

Connector C
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#41	#C1	Alarm LED	U = approximately 1.6 V/ U low	U low	Pulsed signal, f = approximately 0.5 Hz
#42	#C2	Reserve
#43	#C3	Switch left-hand rear door, signal	U low	U low	Grounded with door closed, open-circuit with door open
#44	#C4	Hood switch	U low	U low	Grounded with door closed, open-circuit with door open
#45	#C5	Lock switch left-hand rear door, signal	U bat if door unlocked; U low if door locked	U bat if door unlocked; U low if door locked
#46	#C6	Gas discharge lamp module (GDL) sensor
#47	#C7	LIN communication	During communication the voltage is 0 V - U bat	During communication the voltage is 0 V - U bat
#48	#C8	Glass breakage loop, pulsed signal	0-12 V	U low
#49	#C9	Signal ground, position sensor for headlamp beam height control	U low	U low
#50	#C10	Lock switch child proof lock left-hand rear door, signal	U low / U bat	U low / U bat
#51	#C11	Power supply, position sensor for headlamp beam height control	U= 5 V	U= 5 V
#52	#C12	Switch left-hand front door, signal	U low	U low	Grounded with door closed, open-circuit with door open
#53	#C13	Communication CAN L low speed network	The voltage is 1.5-2.5 V during communication	The voltage is 1.5-2.5 V during communication
#54	#C14	Communication CAN_H low speed network	The voltage is 2.0-3.5 V during communication	The voltage is 2.0-3.5 V during communication

Connector D
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#1	#D1	Parking lamps	U bat /U low	U bat / U low (Ignition position I); U bat (Ignition position II)
#2	#D2	Cargo compartment lighting	U low / U bat	U low / U bat
#3	#D3	LPG sensor, ground	U low	U low
#4	#D4	Lock switch child proof lock right-hand rear door, signal	U low / U bat	U low / U bat
#5	#D5	Rear right parking lamp	U bat /U low	U bat / U low (Ignition position I); U bat (Ignition position II)
#6	#D6	Parking lamps left-hand rear	U bat /U low	U bat / U low (Ignition position I); U bat (Ignition position II)
#7	#D7	X-power supply to subwoofer module (SUB)	U= 10.3 V	U low
#8	#D8	Signal ground fuel level sensor, CNG	U low	U low
#9	#D9	Reserve
#10	#D10	Reserve
#11	#D11	Cargo compartment lighting	U bat /U low	U bat /U low	S60, S80
#12	#D12	Ground	U low	U low
#13	#D13	Reserve
#14	#D14	Power supply, fuel level sensor, CNG	U low	U 5 V
#15	#D15	Input signal fuel level sensor (pressure), CNG	U low	U= 0.5 V-4.5 V	Full (200 bar): 4.5 V Empty (0 bar): 0.5 V
#16	#D16	Reserve
#17	#D17	Serial communication (LIN)	The voltage is 0 V - Ubat during communication
#18	#D18	Brake light	U bat /U low	U bat /U low	S80
#19	#D19	Communication CAN_L low speed network, accessory electronic module (AEM)	The voltage is 1.5-2.5 V during communication	The voltage is 1.5-2.5 V during communication
#20	#D20	Communication CAN_L low speed network, road traffic information module (RTI)	The voltage is 1.5-2.5 V during communication	The voltage is 1.5-2.5 V during communication
#21	#D21	Communication CAN_H low speed network, road traffic information module (RTI)	The voltage is 2.0-3.5 V during communication	The voltage is 2.0-3.5 V during communication
#22	#D22	Reserve
#23	#D23	Reserve
#24	#D24	Reserve
#25	#D25	Reserve
#26	#D26	Serial communication (LIN), inclination sensor module (ISM)	During communication the voltage is 0 V - U bat	During communication the voltage is 0 V - U bat	Communicates when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM).
#27	#D27	Input signal, fuel level sensor (temperature), CNG	U low	U=0.5 V-5 V	0°C ~ 4 V 25°C ~ 2.5 V
#28	#D28	Lock switch right-hand rear door, signal	U bat if door unlocked; U low if door locked	U bat if door unlocked; U low if door locked
#29	#D29	Switch right-hand front door, signal	U low	U low	Pin to ground with door closed, open-circuit with door open
#30	#D30	Communication CAN_H low speed network, accessory electronic module (AEM)	The voltage is 2.0-3.5 V during communication	The voltage is 2.0-3.5 V during communication
#31	#D31	Power supply inclination sensor module (ISM), output signal.	U U low /U bat	U U low	Supplied with voltage when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM).
#32	#D32	Serial communication (LIN)	During communication the voltage is 0 V - U bat	During communication the voltage is 0 V - U bat
#33	#D33	Switch right-hand rear door, signal	U low	U low	Pin to ground with door closed, open-circuit with door open
#34	#D34	Rear seat entertainment, power supply	U low	U bat
#35	#D35	Serial communication (LIN)	During communication the voltage is 0 V - U bat	During communication the voltage is 0 V - U bat
#36	#D36	LPG sensor	U low	U = 5 V

Scheme 264


Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#A	15-power supply, trailer module (TRM)	U low	U bat /U low
#B	Stop lamps, trailer module (TRM)
#C	Turn signal lamp right input signal, trailer module (TRM)
#D	Turn signal lamp left input signal, trailer module (TRM)
#E	Fog lamps, trailer module (TRM)
#F	30-power supply, trailer module (TRM)	U bat	U bat
#G	Power supply, trailer module (TRM)	U bat	U bat
#H	Parking lamps, trailer module (TRM)	U bat /U low	U bat
#I	Turn signal lamp right, trailer module (TRM)	U bat /U low	U bat /U low	Pulsed signal, f = approximately 1.5 Hz Hazard warning signal flasher
#J	Turn signal lamp left, trailer module (TRM)	U bat /U low	U bat /U low	Pulsed signal, f = approximately 1.5 Hz Hazard warning signal flasher
#K	Back-up (reversing) lamps, trailer module (TRM)	U low	U bat /U low
#L	30-power supply, trailer module (TRM)	U bat	U bat

Scheme 265

Connector F
Breakout box terminal	Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#41	#F1	Rear windshield wiper, power supply	U low	U bat /U low
#42	#F2	Lock switch tailgate/trunk lid, signal	U low	U low	Pin to ground with tailgate closed, open-circuit with tailgate open
#43	#F3	Switch tailgate handle, signal			S60, S80
#44	#F4	High level stop lamp	U bat /U low	U bat / U low	V70, XC90. The resistance must be around 10 kohms with the ignition off, not active.
#45	#F5	Ground, luggage compartment lighting and lock motor tailgate.	U low	U low
#46	#F6	Rear windshield wiper, power supply	U low	U bat (Ignition positions I and II), otherwise U low
#47	#F7	Cargo compartment lighting	U low / U bat	U low / U bat	XC90
#48	#F8	Lock motor trunk lid/tailgate, unlock signal	U bat /U low	U low
#49	#F9	Lock motor trunk lid/tailgate, lock signal	U bat /U low	U low	Only V70, XC90.
#50	#F10	License plate lighting	U bat /U low	U bat / U low

Scheme 266


Control module terminal	Signal type	Ignition off Active/Not active	Ignition on Active/Not active	Miscellaneous
#G1	Heated rear windshield	U low	U bat /U low	V70, XC90
#G2	Heated rear windshield	U low	U bat /U low	V70, XC90
#G3	Reserve
#G4	Reserve
#G5	Reserve

Scheme 267

Scheme 267: Upper electronic module (UEM)

Connector A, terminals #A1-#A22

The following values are measured between the relevant terminal in column 1 and terminal #A20 (signal ground) unless otherwise stated.

Note. Check the ground terminals before starting to take readings with the breakout box.

U = DC in volts (V).

Ubat = battery voltage in volts (V).

Ulow = Voltage close to 0 V.

Terminal, breakout box	Terminal, control module	Signal type	Ignition off Active/not active	Ignition on Active/not active	Other
#1	#A1	Power supply	Ubat	Ubat
#2	#A2	Third row reading lamps, control signal (XC90 only)	Ubat/0	Ubat/0
#3	#A3	Control module communication cable (CANH)	2.5-3.5 V	2.5-3.5 V	During communication.
#4	#A4	The front right reading lamp and general lighting, control signal	7-9 V/0 V	7-9 V/0 V	Active when the right front reading lamp or the general lighting is activated.
#5	#A5	Control modules communication cable (CANL)	1.5-2.5 V	1.5-2.5 V
#6	#A6	The front right reading lamp, signal supply	Ubat/0 V	Ubat/0 V	Pulse width modulation (PWM) signal.
#7	#A7	Rear left reading lamp, signal supply	Ubat/0 V	Ubat/0 V	Active when the left rear reading lamp or the general lighting is activated. Pulse width modulation (PWM) signal.
#8	#A8	Extended X-supply	Ubat/0 V	Ubat/0 V	The power supply to the sun roof logic, mirror lamps in the sun visor, rain sensor, buttons for the headlining lighting and certain button lighting.
#9	#A9	Cargo compartment lighting (V70, V70 XC) / Third row reading lamps (XC90), power supply	Ubat/0 V	Ubat/0 V	Pulse width modulation (PWM) signal.
#10	#A10	Mass movement sensor, power supply	Ubat/0 V	Ubat/0 V	Supplies power to both mass movement sensors in the XC90.
#11	#A11	Control module power supply	Ubat	Ubat
#12	#A12	Control module power supply	Ubat	Ubat
#13	#A13	Rain sensor, data signal
#14	#A14	Rear right reading lamp, signal supply	Ubat/0 V	Ubat/0 V	The signal is active when the button for the lamp is not pressed in.
#15	#A15	Rear left reading lamp, control signal	Ubat/0 V	Ubat/0 V	The signal is active when the button for the lamp is not pressed in.
#16	#A16	The front left reading lamp and general lighting, control signal	7-9 V/0 V	7-9 V/0 V	Active when the left front reading lamp or the general lighting is activated.
#17	#A17	The rear right reading lamp, signal supply	Ubat/0 V	Ubat/0 V	Active when the right rear reading lamp or the general lighting is activated. Pulse width modulation (PWM) signal.
#18	#A18	The front left reading lamp, signal supply	Ubat/0 V	Ubat/0 V	Pulse width modulation (PWM) signal.
#19	#A19	General lighting, signal supply	Ubat/0 V	Ubat/0 V	Pulse width modulation (PWM) signal.
#20	#A20	Signal ground	U Ulow	U Ulow
#21	#A21	Serial communication (Volcano lite)	0 V-Ubat	0 V-Ubat	The voltage is 0 V - Ubat during communication. Ubat is the default.
#22	#A22	Mass movement sensor, data signal	Ubat	Ubat	Communication with both mass movement sensors in the XC90.

Scheme 268

Scheme 268: Sun roof (sun roof module (SRM))

Connector A, terminals #A1-#A10

The following values are measured between the relevant terminal in column 1 and terminal #A5 (signal ground) unless otherwise stated.

U = DC in volts (V).

Ubat = battery voltage in volts (V).

Ulow = Voltage close to 0 V.

Terminal, control module	Signal type	Ignition off Active/not active	Ignition on Active/not active	Other
#A1	Power supply to the sun roof motor	Ubat	Ubat
#A2	Sun roof forward, control signal	Ubat/0 V	Ubat/0 V	Pulsed signal when active.
#A3	Sun roof tilt, control signal	Ubat/0 V	Ubat/0 V	Pulsed signal when active.
#A4	Serial communication (Volcano lite)	Ubat	Ubat	The voltage is 0 V - Ubat during communication. Ubat is the default.
#A5	Signal ground	Ulow	Ulow
#A6	Power supply to the electronics in the sun roof module (SRM)	Ubat (for 5 minutes only according to the conditions on the right)	Ubat	Active when the ignition is off and neither of the front doors have been opened.
#A7	Sun roof auto, control signal	Ubat/0 V	Ubat/0 V	Pulsed signal. Active when switching.
#A8	Sun roof backward, control signal	Ubat/0 V	Ubat/0 V	Pulsed signal when active.
#A9	Power supply to sun roof switch	Ubat/Ubat	Ubat/Ubat	Pulsed signal when active.
#A10	Power ground	Ulow	Ulow

Scheme 269

Scheme 269: Rain sensor

Connector A, terminals #A1-#A5

U = DC in volts (V).

Ubat = battery voltage in volts (V).

Ulow = Voltage close to 0 V.

Terminal, control module	Signal type	Ignition off	Ignition on	Other
#A1	Serial communication			Data signal
#A2	Ground	Ulow	U low
#A3	Power supply	Ubat/0 V	U bat /0 V
#A4	Windshield wiper position signal		U bat /0 V	When the windshield wipers are in the parked position, U must be U bat . When the windshield wipers are operating U must be 0 V (grounded).
#A5	Not used

Cables and Fuses - Specifications, Electrical/electronic: Specifications Volvo S80 I

Component Specification

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Scheme 253

Scheme 254

Signal specification

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Scheme 257

Scheme 258

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Scheme 260

Scheme 261

Scheme 262

Scheme 263

Scheme 264

Scheme 265

Scheme 266

Scheme 267

Scheme 268

Scheme 269

More articles — Cables and Fuses - Specifications, Electrical/electronic

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