Signal Specification

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.

Fig 1: Identifying Rear Electronic Module (REM) Connectors

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 (%)

Fig 2: Identifying Connector A

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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 = ca. 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 = ca. 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	-

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	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 = ca. 1.5 Hz
#11	#B11	Left turn signal lamp	U_low	U_bat /U_low	Pulsed signal, f = ca. 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	-	-	-
#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	-	-	-

Fig 4: Identifying Connector C Terminals

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
#41	#C1	Alarm LED	U = approximately 1.6V/ U_low	U_low	Pulsed signal, f = approximately 0.5Hz
#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	During communication the voltage is 1.5 - 2.5 V	During communication the voltage is 1.5 - 2.5 V	-
#54	#C14	Communication CAN_H low speed network	During communication the voltage is 2.0 - 3.5 V	During communication the voltage is 2.0 - 3.5 V	-

Fig 5: Identifying Connector C

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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)	During communication the voltage is 0 V - U_bat		-
#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)	During communication the voltage is 1.5 - 2.5 V	During communication the voltage is 1.5 - 2.5 V	-
#20	#D20	Communication CAN_L low speed network, road traffic information module (RTI)	During communication the voltage is 1.5 - 2.5 V	During communication the voltage is 1.5 - 2.5 V	-
#21	#D21	Communication CAN_H low speed network, road traffic information module (RTI)	During communication the voltage is 2.0 - 3.5 V	During communication the voltage is 2.0 - 3.5 V	-
#22	#D22	Reserve	-	-	-
#23	#D23	Reserve	-	-	-
#24	#D24	Reserve	-	-	-
#25	#D25	Reserve	-	-	-
#26	#D26	Serial communication (LIN), inclination sensor module (ISM) From and including structure week 201128 the following applies: Serial communication (LIN) alarm siren control module with alternatively without angle sensor (BBS/IBBS)	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). From and including structure week 201128 the following applies: Communicates when the car is alarmed.
#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	During communication the voltage is 2.0 - 3.5 V	-
#31	#D31	Power supply inclination sensor module (ISM), output signal. From and including structure week 201128 terminal #31 is reserve.	U ~ U_low /U_bat From and including structure week 201128 terminal #31 is reserve.	U ~ U_low From and including structure week 201128 terminal #31 is reserve.	Supplied with voltage when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM). From and including structure week 201128 terminal #31 is reserve.
#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	-

Fig 6: Identifying Connector E Terminals

Courtesy of VOLVO CARS CORPORATION

Connector E
-	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 = ca. 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 = ca. 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	-

Fig 7: Identifying Connector F Terminals

Courtesy of VOLVO CARS CORPORATION

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	XC90 The resistance must be around 10 kΩ 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 XC90.
#50	#F10	License plate lighting	U_bat /U_low	U_bat / U_low	-

Fig 8: Identifying Connector G Terminals

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Connector G
-	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	XC90
-	#G2	Heated rear windshield	U_low	U_bat /U_low	XC90
-	#G3	Reserve	-	-	-
-	#G4	Reserve	-	-	-
-	#G5	Reserve	-	-	-