Signal specification

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

General

All values listed below should be measured between the respective terminal in column 2 (control module terminal) and terminal #B2 unless stated otherwise in column 6 (Other).

NOTE:

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

HINT: If the numbering of the connector is different from the numbering on the breakout box, the connector number is given first, terminal #A61, followed by the breakout box number in brackets, (terminal #B1). Example: #A61 (#B1).

U=	DC voltage in volts (V)	U_AC =	AC voltage in volts (V)
U_bat =	Battery voltage in volts (V)	f =	Frequency in Hertz (Hz)
U_low =	Voltage approximately 0 V	%pulse =	Pulse ratio (%)
t =	Time in milliseconds (ms)	I =	Current in amperes (A)

Breakout box terminal	Control module terminal	Signal type	Ignition on	Engine idling	Other
(#A1)	#A1	-	-	-	-
(#A2)	#A2	Control signal Canister purge (CP) valve	U = U_bat	-	PWM signal during activation of the canister purge (CP) valve
(#A3)	#A3	-	-	-	-
(#A4)	#A4	Intake air temperature (IAT) sensor signal	-	(+10°C) U=2.95 V (+20°C) U = 2.38 V (+30°C) U=1.93 V (+40°C) U=1.58 V	The intake air temperature (IAT) sensor is integrated in the mass air flow (MAF) sensor
(#A5)	#A5	Power supply, throttle unit	-	-	-
(#A6)	#A6	Signal, throttle sensor 1	-	-	-
(#A7)	#A7	Engine cooling fan (FC) control signal	U = U_bat	U_low =1.5 V, U _high =U_bat - 1.5 V, f=100 Hz, pulse ratio=10-90%	Pulse width modulation (PWM) signal
(#A8)	#A8	-	-	-	-
(#A9)	#A9	-	-	-	-
(#A10)	#A10	-	-	-	-
(#A11)	#A11	Control signal preheating rear heated oxygen sensor (HO2S)	U = U_bat	Preheating of U=U_bat Preheating U=U_low	-
(#A12)	#A12	Control signal, intake camshaft reset valve	-	U_top =U_bat , f=250 Hz 5%, pulse ratio 20-95%	Pulse width modulation (PWM), pulse ratio governs control of the camshaft
(#A13)	#A13	Exhaust camshaft reset valve control signal	-	U_top =U_bat , f=250 Hz 5%, pulse ratio 20-95%	Pulse width modulation (PWM), pulse ratio governs control of the camshaft
(#A14)	#A14	Control signal injector 5	U = U_bat	t_low =2-3 ms	t increases with engine speed (RPM) and load
(#A15)	#A15	Control signal injector 3	U = U_bat	t_low =2-3 ms	t increases with engine speed (RPM) and load
(#A16)	#A16	Control signal injector 1	U = U_bat	t_low =2-3 ms	t increases with engine speed (RPM) and load
(#A17)	#A17	Signal ground preheating front heated oxygen sensor (HO2S)	U=U_low	-	-
(#A18)	#A18	Control signal preheating front heated oxygen sensor (HO2S)	U = U_bat	Preheating of: U=U_bat Preheating on: U=U_low	Pulse width modulation (PWM) signal
(#A19)	#A19	Fuel pressure sensor signal	-	U=3.7 V	-
(#A20)	#A20	-	-	-	-
(#A21)	#A21	Signal A/C pressure sensor	U=0.9 V (at approximately 20°C)	-	-
(#A22)	#A22	Mass air flow (MAF) sensor signal	U=0.7 V	U=1.3 V	U increases with increasing air mass
(#A23)	#A23	Boost pressure sensor signal	U=3.63 V	-	U increases with pressure in the intake pipe
(#A24)	#A24	Signal (+) rear heated oxygen sensor (HO2S) signal	-	(λ=0.95) U>700 mV (λ=1.10) U<200 mV	-
(#A25)	#A25	Signal, throttle sensor 2	-	-	-
(#A26)	#A26	-	-	-	-
(#A27)	#A27	Signal (+) camshaft position (CMP) sensor 2, exhaust camshaft	U =5 V	U=Pulsed signal, U_top =5V, U _offset =2.5V	The frequency varies according to engine speed (RPM)
(#A28)	#A28	Signal ignition discharge module (IDM) check, ignition coils	-	-	-
(#A29)	#A29	Control signal ignition coil no. 3	U=U_low	U=2.5 V t_high =2 ms	The frequency varies according to engine speed (RPM)
(#A30)	#A30	Control signal ignition coil no. 2	U=U_low	U=2.5 V t_high =2 ms	The frequency varies according to engine speed (RPM)
(#A31)	#A31	Control signal ignition coil no. 1	U=U_low	U=2.5 V t_high =2.5 ms	The frequency varies according to engine speed (RPM)
(#A32)	#A32	Control signal injector 2	U = U_bat	t_low =2-3 ms	t increases with engine speed (RPM) and load
(#A33)	#A33	Control signal injector 4	U = U_bat	t_low =2-3 ms	t increases with engine speed (RPM) and load
(#A34)	#A34	Electronic throttle unit (ETM) damper motor power supply	U = U_bat	U = U_bat	-
(#A35)	#A35	Control signal (-) damper motor for the electronic throttle module (ETM)	-	PWM signal U_top =U _bat , pulse ratio=10-90%. The polarity of the control signal changes when the damper motor is operated against the direction of rotation.	The damper motor is controlled from the integrated power stage in the engine control module (ECM). Take readings to terminal #A36 (#A36)
(#A36)	#A36	Control signal (+) damper motor for the electronic throttle module (ETM)	-	PWM signal U_top =U _bat , pulse ratio=10-90%. The polarity of the control signal changes when the damper motor is operated against the direction of rotation.	The damper motor is controlled from the integrated power stage in the engine control module (ECM). Take readings to terminal #A35 (#A35)
(#A37)	#A37	-	-	-	-
(#A38)	#A38	-	-	-	-
(#A39)	#A39	Oil pressure switch signal	U=U_low	U = U_bat	-
(#A40)	#A40	Signal (+) engine coolant temperature (ECT) sensor	-	(+30°C) U=2.63 V (+80°C) U=0.87 V (+100°C) U=0.55 V	-
(#A41)	#A41	Signal (-) front heated oxygen sensor (HO2S)	-	λ= 1 when the current is approximately +0.2 mA	Negative current when the fuel air mixture is rich. Range: [-12 mA, +12 mA]
(#A42)	#A42	Signal (+) front heated oxygen sensor (HO2S)	-	λ= 1 when the current is approximately +0.2 mA	Positive current when the fuel air mixture is lean Range: [-12 mA, +12 mA]
(#A43)	#A43	Signal ground, damper motor for the electronic throttle module (ETM)	U=U_low	U=U_low	-
(#A44)	#A44	-	-	-	-
(#A45)	#A45	-	-	-	-
(#A46)	#A46	Signal (+) knock sensor (KS) 1	-	-	Built-in resistance: 200 kΩ
(#A47)	#A47	Signal (+) camshaft position (CMP) sensor 1, intake camshaft	U =5 V	U=Pulsed signal, U_top =5V, U _offset =2.5V	The frequency varies according to engine speed (RPM)
(#A48)	#A48	Signal (+), flywheel sensor	U=U_low	U=sine wave voltage, U_top =5 V, U _offset =2.5 V	Take readings to terminal #A66 (#B6). The frequency increases with engine speed (RPM)
(#A49)	#A49	-	-	-	-
(#A50)	#A50	Control signal ignition coil no. 5	U=U_low	U=2.5 V t_high =2 ms	The frequency varies according to engine speed (RPM)
(#A51)	#A51	Control signal ignition coil no. 4	U=U_low	U=2.5 V t_high =2 ms	The frequency varies according to engine speed (RPM)
(#A52)	#A52	Power supply, damper motor for the electronic throttle module (ETM)	U = U_bat	U = U_bat	-
(#A53)	#A53	Power ground 3	U=U_low	-	-
(#A54)	#A54	Power ground 2	U=U_low	-	-
(#A55)	#A55	-	-	-	-
(#A56)	#A56	-	-	-	-
(#A57)	#A57	Power supply, camshaft position (CMP) sensor	U =5 V	-	-
(#A58)	#A58	Power supply, manifold absolute pressure (MAP) sensor A/C pressure sensor, oil quality sensor	U =5 V	-	Oil quality sensor only MY2005- and only certain markets
(#A59)	#A59	Fuel temperature sensor signal	-	(+10°C) U=3.96 V, (+20°C) U=3.57 V, (+30°C) U=3.15 V, (+40°C) U=2.70 V	Temperature range: -40°C - +125°C
(#A60)	#A60	Signal ground mass air flow (MAF) sensor	U=U_low	-	-
(#B1)	#A61	Signal ground Intake air temperature (IAT) sensor inlet the engine coolant temperature (ECT) sensor rear λ-sensor, oil quality sensor	U=U_low	-	Oil quality sensor only MY2005- and only certain markets
(#B2)	#A62	Power ground 1	U=U_low	-	-
(#B3)	#A63	-	-	-	-
(#B4)	#A64	Signal ground, knock sensor (KS) 1	-	-	Built-in resistance: 200 kΩ
(#B5)	#A65	Signal ground the camshaft position (CMP) sensor	U=U_low	-	-
(#B6)	#A66	Signal (-) flywheel sensor	U=U_low	U=sine wave voltage, U_top =5 V, U _offset =2.5 V	Take readings to terminal #A48 (#A48). The frequency increases with engine speed (RPM)
(#B7)	#A67	-	-	-	-
(#B8)	#A68	Signal oil quality sensor	-	PWM-signal U_top =5 V Pulse ratio 17-83% T=120ms Pulse train with three pulses then pause of 1.2 seconds. Pulse no. 1= not used. Pulse no. 2= oil level. Pulse no. 3= not used. Pulse ratio for pulse no. 2 changes according to current oil level.	The PWM-signal is generated by the oil quality sensor. Only MY2005- and only certain markets.
(#B9)	#A69	-	-	-	-
(#B10)	#A70	Power supply 12 V	U = U_bat	U = U_bat	-

Breakout box terminal	Control module terminal	Signal type	Ignition on	Engine idling	Other
(#B11)	#B1	Control modules communication cable (CAN L) low speed	-	-	-
(#B12)	#B2	-	-	-	-
(#B13)	#B3	-	-	-	-
(#B14)	#B4	Signal ground intake manifold air temperature sensor fuel tank pressure sensor clutch pedal sensor brake pedal sensor	U=U_low	-	-
(#B15)	#B5	Signal ground accelerator pedal (AP) position sensor	U=U_low	-	-
(#B16)	#B6	-	-	-	-
(#B17)	#B7	Control signal, leak diagnostic unit, pump	U = U_bat	-	-
(#B18)	#B8	Signal, coolant level sensor	U=U_low	U=U_low	-
(#B19)	#B9	Power supply, 5 V accelerator pedal (AP) position sensor	U =5 V	-	-
(#B20)	#B10	-	-	-	-
(#B21)	#B11	30-supply (power supply from battery)	U = U_bat	U = U_bat	Ignition off: U = U_bat
(#B22)	#B12	-	-	-	-
(#B23)	#B13	Control module communication cable (CAN H) high speed	-	-	-
(#B24)	#B14	-	-	-	-
(#B25)	#B15	Clutch pedal sensor signal	-	-	Analogue signal, varies depending on the position of the clutch pedal
(#B26)	#B16	-	-	-	-
(#B27)	#B17	Signal, accelerator pedal (AP) position sensor	-	-	Analogue signal, varies depending on the position of the accelerator pedal (AP)
(#B28)	#B18	-	-	-	-
(#B29)	#B19	-	-	-	-
(#B30)	#B20	-	-	-	-
(#B31)	#B21	-	-	-	-
(#B32)	#B22	Diagnostic lead C-link	U=90% of U_bat	-	Other values apply if a generic fault-tracing instrument is connected to the data link connector (DLC)
(#B33)	#B23	Signal crank, 50-supply	U=U_low	U=U_low	At crank: U = U_bat
(#B34)	#B24	-	-	-	-
(#B35)	#B25	Signal, accelerator pedal (AP) position sensor	U_top =U_bat t = 4 ms pulse ratio = 8-88%	-	Pulse width modulation (PWM) signal from the accelerator pedal (AP) position sensor to the engine control module (ECM)
(#B36)	#B26	Brake lamp switch signal	When the brake pedal is depressed: U=U _bat . When the brake pedal is not pressed: U=U_low	-	-
(#B37)	#B27	-	-	-	-
(#B38)	#B28	-	-	-	-
(#B39)	#B29	Signal, outside temperature sensor	(0°C) U = 3.99 V (+10°C) U = 3.53 V (+20°C) U = 3.01 V (+30°C) U = 2.47 V	-	Temperature range: [-50°C, +120°C]
(#B40)	#B30	-	-	-	-
(#B41)	#B31	-	-	-	-
(#B42)	#B32	-	-	-	-
(#B43)	#B33	-	-	-	-
(#B44)	#B34	-	-	-	-
(#B45)	#B35	-	-	-	-
(#B46)	#B36	-	-	-	-
(#B47)	#B37	Signal, ignition on, 15-supply	U = U_bat	U = U_bat	Ignition off: U=U_low
(#B48)	#B38	System relay control signal	U=U_low	U=U_low	Relay activated: U=U_low , Relay not activated: U=U_bat , The system relay runs on (2-5 minutes)
(#B49)	#B39	-	-	-	-
(#B50)	#B40	Control signal, leak diagnostic unit, valve	-	-	Valve activated: U=U_low Valve not activated: U = U_bat
(#B51)	#B41	-	-	-	-
(#B52)	#B42	-	-	-	-
(#B53)	#B43	-	-	-	-
(#B54)	#B44	Control signal, air conditioning (A/C) relay	-	-	Air conditioning (A/C) relay activated: U=U_low Air conditioning (A/C) relay not activated: U = U_bat
(#B55)	#B45	Fuel pump (FP) activation control signal	-	-	PWM signal to the central electronic module (CEM) to control the fuel pump (FP) relay
(#B56)	#B46	Malfunction indicator lamp (MIL) control signal	U=U_low	Not activated: U=U_bat Activated: U=U_low	-
(#B57)	#B47	Fuel pump control signal	-	-	-
(#B58)	#B48	Control signal, engine cooling fan (FC), control modules	-	Not activated: U=U_bat Activated: U=U_low	The engine cooling fan (FC) is controlled by the engine control module (ECM)
(#B59)	#B49	-	-	-	-
(#B60)	#B50	-	-	-	-