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Home >> Volvo >> 2015 >> XC70 T6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Ignition And Control Systems - Specifications, Electrical/Electronic >> Signal Specification, Engine Control Module (ECM) >> Signal Specification, Engine Control Module (ECM) [2014-2016, B4204T11]
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Signal Specification, Engine Control Module (ECM) [2014-2016, B4204T11]

All the values given below apply between the respective terminal (column 1) and power ground (#B37, #B38 and #B39 on the breakout box). If this is not the case, it is indicated within brackets.

NOTE:

Connect the breakout box and check the ground terminals before taking readings.

#A1-#A60 correspond to adapter connector A (breakout box #A1- #A60)

#A61-#A103 correspond to adapter connector B (breakout box #B1- #B43)

#B1-#B60 correspond to adapter connector C (breakout box #C1-#C60)

#B61 - #B95 corresponds to the adapter's connector D (breakout box #D1 - #D35)

U= DC voltage in volts (V) UAC = AC voltage in volts (V)
Ubat = Battery voltage in volts (V) f = Frequency in Hertz (Hz)
Ulow = Voltage approximately 0 V t = Time in seconds (s)
PWM = Pulse-width modulation FM = Frequency modulation
CONNECTOR A

Breakout box terminal  Control module terminal  Signal type  Go to component  Ignition on  Idle  Miscellaneous 
#A1 #A1 Start, signal 50-feed 4/56
pin IP 46
U = Ulow U = Ulow U = Ubat when the starter motor runs
#A2 #A2 - - - - -
#A3 #A3 System relay, voltage reading 15/31 U = Ubat U = Ubat "Wake-up".
#A4 #A4 AC pressure sensor, signal 7/8
pin 2
U=0-5 V U=0-5 V 1.1 - 5.0 V with A/C on.
#A5 #A5 - - - - -
#A6 #A6 AC compressor, control signal 8/3
pin 1
PWM (0-12 V) PWM (0-12 V) -
#A7 #A7 Neutral position sensor 2, signal 7/243
pin 1
PWM (0 - 5 V) PWM (0 - 5 V) -
#A8 #A8 - - - - -
#A9 #A9 Neutral position sensor 1, signal 7/243
pin 3
PWM (0 - 5 V) PWM (0 - 5 V) -
#A10 #A10 Power supply start relay ( low-side ) 2/35
pin 2
U = Ubat U = Ubat Digital output. 0 V at startup.
#A11 #A11 Supercharger control valve bypass, voltage supply 6/181
pin 5
U = 5 V U = 5 V Certain versions only.
#A12 #A12 Fuel pump control module, control signal 4/83
pin 5
PWM (0 - 5 V) PWM (0 - 5 V) -
#A13 #A13 - - - - -
#A14 #A14 Accelerator pedal position sensor, signal 7/51
pin 5
PWM (0-12 V) PWM (0-12 V) -
#A15 #A15 Fuel pressure sensor low pressure side, signal 7/140
pin 2
U = approx. 0.5 V U=0.5 - 5 V -
#A16 #A16 - - - - -
#A17 #A17 - - - - -
#A18 #A18 - - - - -
#A19 #A19 - - - - -
#A20 #A20 Fuel pressure sensor low pressure side, signal ground 7/140
pin 3
U = Ulow U = Ulow GND
#A21 #A21 - - - - -
#A22 #A22 - - - - -
#A23 #A23 Air conditioning (A/C) pressure sensor, signal ground 7/8
pin 1
U = Ulow U = Ulow GND
#A24 #A24 - - - - -
#A25 #A25 Electric water pump, signal for emergency 6/113
pin 1
U = 0 - 12 V U = 0 - 12 V Control signal for maximum pump speed when there is no LIN communication.
#A26 #A26 - - - - -
#A27 #A27 Starter motor relay, power supply ( high-side ) 2/35
pin 1
U = Ubat U = Ubat Digital output. 0 V at startup.
#A28 #A28 - - - - -
#A29 #A29 - - - - -
#A30 #A30 Fuel pressure sensor low pressure side, power supply 7/140
pin 1
U = 5 V U = 5 V -
#A31 #A31 - - - - -
#A32 #A32 - - - - -
#A33 #A33 - - - - -
#A34 #A34 Outside temperature sensor, Signal 6/62
pin2
U=0-5 V U=0-5 V -
#A35 #A35 - - - - -
#A36 #A36 - - - - -
#A37 #A37 - - - - -
#A38 #A38 - - - - -
#A39 #A39 Power supply 30-feed 15/31 U = Ubat U = Ubat -
#A40 #A40 - - - - -
#A41 #A41 Immobilizer signal, automatic gearbox (P/N position) / clutch pedal switch 75 % 3/271
pin 1
U = 0 - 12 V U = 0 - 12 V 0 V in P and N-position, 12 V in D and R-position.
0 V with clutch pedal depressed, 12 V with clutch pedal released.
#A42 #A42 Air conditioning (A/C) pressure sensor, power supply 7/8
pin 3
U = 5 V U = 5 V -
#A43 #A43 Brake vacuum sensor, power supply 7/251
pin 3
U = 5 V U = 5 V -
#A44 #A44 Neutral position sensor, power supply 7/243
pin 2
U = 5 V U = 5 V -
#A45 #A45 - - - - -
#A46 #A46 - - - - -
#A47 #A47 - - - - -
#A48 #A48 Pressure sensor intake manifold, power supply 7/81
pin 1
U = 5 V U = 5 V -
#A49 #A49 Boost pressure and charge air temperature sensor (after turbo), power supply 7/165
pin 3
U = 5 V U = 5 V -
#A50 #A50 - - - - -
#A51 #A51 Neutral position sensor, signal ground 7/243
pin 4
U = Ulow U = Ulow GND
#A52 #A52 - - - - -
#A53 #A53 Outside temperature sensor, signal ground 6/62
pin 3
U = Ulow U = Ulow GND
#A54 #A54 - - - - -
#A55 #A55 - - - - -
#A56 #A56 - - - - -
#A57 #A57 - - - - -
#A58 #A58 - - - - -
#A59 #A59 Indication 1st gear for function HDC ( Hill descent control ) 3/282
pin 2
U = 0 - 12 V U = 0 - 12 V Approx. 0 V with gear engaged. Approx. 12 V with gear disengaged.
Certain versions only.
#A60 #A60 - - - - -
#B1 #A61 - - - - -
#B2 #A62 Brake light switch, signal 3/9
pin 2
U = 0 - 12 V U = 0 - 12 V 0 V when inactive, 12 V when active.
#B3 #A63 System relay, voltage reading 15/31 U = 0 - 12 V U = 0 - 12 V -
#B4 #A64 - - - - -
#B5 #A65 Battery relay, control signal 2/166
pin 2
U = 0 - 12 V U = 0 - 12 V Battery relay for main battery.
#B6 #A66 Leak diagnostic unit, valve 6/67
pin 3
U = 0 - 12 V U = 0 - 12 V Valve activated: U=Ulow Valve not activated: U=Ubat . Only certain versions.
#B7 #A67 Leak diagnostic unit, pump 6/67
pin 1
U = 0 - 12 V U = 0 - 12 V Certain versions only.
#B8 #A68 Relay for secondary battery 2/246
pin A2
U = 0 - 12 V U = 0 - 12 V -
#B9 #A69 - - - - -
#B10 #A70 - - - - -
#B11 #A71 - - - - -
#B12 #A72 - - - - -
#B13 #A73 Local CAN L, Transmission Control Module (TCM) - U=1.25 - 2.5 V U=1.25 - 2.5 V Measured against #B32 (#A92).
#B14 #A74 Brake vacuum sensor, signal ground 7/251
pin 1
U = Ulow U = Ulow GND
#B15 #A75 LIN bus #2 - U = 0 - 12 V U = 0 - 12 V Digital communication.
#B16 #A76 HS-CAN L - U=1.25 - 2.5 V U=1.25 - 2.5 V Digital communication.
#B17 #A77 Power supply, 15-feed - U = Ubat U = Ubat -
#B18 #A78 Brake vacuum sensor, signal 7/251
pin 2
U=0-5 V U=0-5 V -
#B19 #A79 - - - - -
#B20 #A80 - - - - -
#B21 #A81 - - - - -
#B22 #A82 - - - - -
#B23 #A83 Variable A/C compressor, control signal 8/3
pin 2
PWM (0-12 V) PWM (0-12 V) -
#B24 #A84 Preheating of leak diagnostic unit, control signal 6/67
pin 2
U = 0 - 12 V U = 0 - 12 V Heating element activated: U=Ulow Heating element not activated: U=Ubat Only certain versions.
#B25 #A85 - - - - -
#B26 #A86 - - - - -
#B27 #A87 - - - - -
#B28 #A88 - - - - -
#B29 #A89 - - - - -
#B30 #A90 - - - - -
#B31 #A91 - - - - -
#B32 #A92 Local CAN H, Transmission Control Module (TCM) - U = 2.5 - 3.75 V U = 2.5 - 3.75 V CAN. Measured against #B13 (#A73).
#B33 #A93 LIN Bus #3 - U = 0 - 12 V U = 0 - 12 V Digital communication.
#B34 #A94 LIN Bus #1 - U = 0 - 12 V U = 0 - 12 V Digital communication.
#B35 #A95 HS-CAN H - U = 2.5 - 3.75 V U = 2.5 - 3.75 V CAN. Measured against #B16 (#A76).
#B36 #A96 System ground 31/95 U = Ulow U = Ulow GND
#B37 #A97 Power ground 1 31/95 U = Ulow U = Ulow GND
#B38 #A98 Power ground 2 31/95 U = Ulow U = Ulow GND
#B39 #A99 Power ground 3 31/95 U = Ulow U = Ulow GND
#B40 #A100 System relay, voltage reading 15/31 U = Ubat U = Ubat -
#B41 #A101 System relay, voltage reading 15/31 U = Ubat U = Ubat -
#B42 #A102 System relay, voltage reading 15/31 U = Ubat U = Ubat -
#B43 #A103 System relay, voltage reading 15/31 U = Ubat U = Ubat -
CONNECTOR B

Breakout box terminal  Control module terminal  Signal type  Go to component  Ignition on  Engine idling  Miscellaneous 
#C1 #B1 Knock sensor, signal (+) 7/24
pin 2
U = approx. 2.3 V U = approx. 2.3 V -
#C2 #B2 Coolant temperature sensor, signal 7/16
pin 1
U=0-5 V U=0-5 V Analog input.
#C3 #B3 - - - - -
#C4 #B4 Mass air flow and intake air temperature sensor, signal (temperature) 7/17
pin 1
U = approx. 0.5 - 4.5 V U = approx. 0.5 - 4.5 V Analogue input. The voltage reduces when the temperature increases.
#C5 #B5 Mass air flow and intake air temperature sensor, ground (temperature) 7/17
pin 2
U = Ulow U = Ulow GND
#C6 #B6 Engine speed (RPM) sensor, signal (+) 7/25
pin 1
FM (0- 5 V) FM (0 - 5 V) Digital input, frequency modulated (FM) signal. The frequency increases with speed.
#C7 #B7 Fuel pressure sensor high pressure side, signal 7/162
pin 2
U = approx. 0.5 V U=0.5 - 5 V Analog input.
#C8 #B8 Intake camshaft position sensor, signal 7/172
pin 3
U = 5 V Square wave (U=0 - 5 V), approx. 5.8 Hz when idling. Digital input. Frequency increases as engine speed increases.
#C9 #B9 - - - - -
#C10 #B10 Exhaust camshaft position sensor, signal 7/173
pin 3
U = 5 V Square wave (U=0 - 5 V), approx. 5.8 Hz when idling. Digital input. Frequency increases as engine speed increases.
#C11 #B11 Front oxygen sensor, signal (-) 7/15
pin 3
U = approx. 2.2 V U = approx. 2.2 V -
#C12 #B12 - - - - -
#C13 #B13 - - - - -
#C14 #B14 - - - - -
#C15 #B15 Supercharger control valve bypass, signal 6/181
pin 3
U=0-5 V PWM (0 - 5 V) Certain versions only.
#C16 #B16 Knock sensor, signal (-) 7/24
pin 2
U = Ulow - -
#C17 #B17 Coolant temperature sensor, signal ground 7/16
pin 2
U = Ulow U = Ulow GND
#C18 #B18 - - - - -
#C19 #B19 Mass air flow and intake air temperature sensor, ground (mass air flow) 7/17
pin 4
U = Ulow U = Ulow GND
#C20 #B20 Mass air flow and intake air temperature sensor, signal (mass air flow) 7/17
pin 5
FM (0 - 5 V) FM (0 - 5 V) Digital input, frequency modulated (FM) signal. The frequency increases with increased mass air flow.
#C21 #B21 Impulse sensor, signal ground 7/25
pin 2
U = Ulow U = Ulow GND
#C22 #B22 Fuel pressure sensor high pressure side, signal ground 7/162
pin 3
U = Ulow U = Ulow GND
#C23 #B23 Intake camshaft position sensor, signal ground 7/172
pin 2
U = Ulow U = Ulow GND
#C24 #B24 - - - - -
#C25 #B25 Exhaust camshaft position sensor, signal ground 7/173
pin 2
U = Ulow U = Ulow GND
#C26 #B26 Front oxygen sensor, signal (-) 7/15
pin 4
U = approx. 2.6 V λ = 1 when current is 0 mA λ > 1 (lean) = positive current.
λ < 1 (rich) = negative current.
#C27 #B27 Boost pressure sensor (after compressor), signal 7/274
pin 2
U=0-5 V U=0-5 V Analog input.
Certain versions only.
#C28 #B28 Boost pressure and charge air temperature sensor (after turbo), signal (temperature) 7/165
pin 2
U=0-5 V U=0-5 V Analog input.
#C29 #B29 Boost pressure and charge air temperature sensor (after turbo), signal (pressure) 7/165
pin 2
U=0-5 V U=0-5 V Analog input
300 kPa = 4.65 V
20 kPa = 0.4 V
#C30 #B30 Pressure sensor intake manifold, signal 7/81
pin 3
U=0-5 V U=0-5 V Analog input
#C31 #B31 - - - - -
#C32 #B32 - - - - -
#C33 #B33 Engine oil pressure and engine oil temperature sensor, signal 7/248
pin 3
PWM (0 - 5 V) PWM (0 - 5 V) -
#C34 #B34 Engine oil pressure and engine oil temperature sensor, power supply 7/248
pin 1
U = 5 V U = 5 V -
#C35 #B35 Boost pressure sensor (after compressor), power supply 7/274
pin 1
U = 5 V U = 5 V Certain versions only.
#C36 #B36 Impulse sensor, power supply 7/25
pin 3
U = 5 V U = 5 V -
#C37 #B37 Fuel pressure sensor high pressure side, power supply 7/162
pin 1
U = 5 V U = 5 V -
#C38 #B38 Intake camshaft position sensor, power supply 7/172
pin 1
U = 5 V U = 5 V -
#C39 #B39 Camshaft position sensor, exhaust, power supply 7/173
pin 1
U = 5 V U = 5 V -
#C40 #B40 Throttle unit, power supply (throttle position sensor) 4/50
pin 5
U = 5 V U = 5 V -
#C41 #B41 Throttle unit throttle position sensor circuit 2, signal 4/50
pin 4
U=0-5 V U=0-5 V -
#C42 #B42 Throttle unit, ground (throttle position sensor) 4/50
pin 3
U = Ulow U = Ulow GND
#C43 #B43 Throttle unit throttle position sensor circuit 1, signal 4/50
pin 6
U=0-5 V U=0-5 V -
#C44 #B44 Boost pressure and charge air temperature sensor (after turbo), signal ground 7/165
pin 1
U = Ulow U = Ulow GND
#C45 #B45 Pressure sensor intake manifold, signal ground 7/81
pin 2
U = Ulow U = Ulow GND
#C46 #B46 - - - - -
#C47 #B47 Rear oxygen sensor, signal (-) 7/104
pin 3
U = Ulow U = Ulow GND
#C48 #B48 Rear oxygen sensor, signal (+) 7/104
pin 4
- λ = 0.9 at approx. 700 mV
λ > 1.1 at approx. 200 mV
-
#C49 #B49 Engine oil pressure and engine oil temperature sensor, signal ground 7/248
pin 2
U = Ulow U = Ulow GND
#C50 #B50 Ignition coil cyl. 2, control signal 20/4
pin 1
U = Ulow U = 5 V duty cycle
30 % f = 240 Hz
The dwell-time is extended in that the duty cycle and frequency increase with increased engine speed.
#C51 #B51 Ignition coil cyl. 3, control signal 20/5
pin 1
U = Ulow Utop =5 V
Pulse ratio 30% f=240 Hz
The dwell-time is extended in that the duty cycle and frequency increase with increased engine speed.
#C52 #B52 Ignition coil cyl. 4, control signal 20/6
pin 1
U = Ulow Utop =5 V
Pulse ratio 30% f=240 Hz
The dwell-time is extended in that the duty cycle and frequency increase with increased engine speed.
#C53 #B53 Ignition coil cyl. 1, control signal 20/3
pin 1
U = Ulow Utop =5 V
Pulse ratio 30% f=240 Hz
The dwell-time is extended in that the duty cycle and frequency increase with increased engine speed.
#C54 #B54 Boost pressure sensor (after compressor), signal ground 7/274
pin 3
U = Ulow U = Ulow GND
Certain versions only.
#C55 #B55 Engine cooling fan, control signal 4/71
pin 4
U = 0 - 12 V PWM (0-12 V) -
#C56 #B56 Rear oxygen sensor, preheating, control signal 7/104
pin 2
PWM (0-12 V) PWM (0-12 V) -
#C57 #B57 EVAP valve, control signal 8/18
pin 2
U = 0 - 12 V PWM (0-12 V) -
#C58 #B58 Control valve, engine oil pump, control signal 8/180
pin 2
U = 0 - 12 V PWM (0-12 V) -
#C59 #B59 Engine oil level sensor, signal ground 7/35
pin 2
U = Ulow U = Ulow GND
#C60 #B60 Engine oil level sensor, signal 7/35
pin 1
U=0-5 V U=0-5 V -
#D1 #B61 - - - - -
#D2 #B62 Center oxygen sensor, signal (-) 7/82
pin 3
U = Ulow U = Ulow GND
Certain versions only.
#D3 #B63 Center oxygen sensor, signal (+) 7/82
pin 4
U = Ulow λ = 0.9 at approx. 700 mV
λ > 1.1 at approx. 200 mV
Certain versions only.
#D4 #B64 - - - - -
#D5 #B65 Turbocharger (TC) control valve, bypass, control signal 8/159A
pin 2
U = Ubat U = 0 - 12 V -
#D6 #B66 Turbocharger (TC) control valve, wastegate, control signal 8/200
pin 2
U = Ubat PWM (0-12 V) Pulse width modulation (PWM) signal during opening (control) of the turbo control valve. The duty cycle varies with control.
#D7 #B67 Intake camshaft control valve, control signal 8/117
pin 2
U = Ubat PWM (0-12 V) -
#D8 #B68 Exhaust camshaft control valve, control signal 8/118
pin 2
U = Ubat PWM (0-12 V) -
#D9 #B69 Electric thermostat, signal 8/166
pin 2
U = Ubat PWM (0-12 V) -
#D10 #B70 - - - - -
#D11 #B71 - - - - -
#D12 #B72 Supercharger clutch, signal (+) 8/175
pin 1
U = 0 - 12 V PWM (0-12 V) Certain versions only.
#D13 #B73 Supercharger clutch, signal (-) 8/175
pin 2
U = 0 - 12 V PWM (0-12 V) Certain versions only.
#D14 #B74 Supercharger control valve bypass, engine (+) 6/181
pin 2
U = Ulow PWM (0-12 V) Certain versions only.
#D15 #B75 Supercharger control valve bypass, engine (-) 6/181
pin 4
U = Ulow PWM (0-12 V) Certain versions only.
#D16 #B76 Throttle unit damper motor, signal (-) 4/50
pin 2
U = 0 - 12 V PWM (0-12 V) -
#D17 #B77 System relay, voltage reading 15/31 U = Ubat U = Ubat -
#D18 #B78 Supercharger control valve bypass, ground 6/181
pin 1
U = Ulow U = Ulow GND
Certain versions only.
#D19 #B79 Fuel injector cylinder 2, signal (-) 8/7
pin 2
PWM (0-12 V) PWM (0-12 V) -
#D20 #B80 Fuel injector cylinder 2, signal (+) 8/7
pin 1
PWM (0-12 V) PWM (0-12 V) -
#D21 #B81 Throttle unit damper motor, signal (+) 4/50
pin 1
PWM (0-12 V) PWM (0-12 V) -
#D22 #B82 System relay, voltage reading 15/31 U = Ubat U = Ubat -
#D23 #B83 - - - - -
#D24 #B84 Fuel injector cylinder 3, signal (-) 8/8
pin 2
PWM (0-12 V) PWM (0-12 V) -
#D25 #B85 Fuel injector cylinder 3, signal (+) 8/8
pin 1
PWM (0-12 V) PWM (0-12 V) -
#D26 #B86 Center oxygen sensor, preheating, control signal 7/82
pin 2
PWM (0-12 V) PWM (0-12 V) -
#D27 #B87 - - - - -
#D28 #B88 - - - - -
#D29 #B89 Fuel injector cylinder 1, signal (+) 8/6
pin 1
PWM (0-12 V) PWM (0-12 V) -
#D30 #B90 Fuel injector cylinder 1, signal (-) 8/6
pin 2
PWM (0-12 V) PWM (0-12 V) -
#D31 #B91 Front oxygen sensor preheating, signal 7/15
pin 2
PWM (0-12 V) PWM (0-12 V) -
#D32 #B92 Fuel volume control valve, signal (-) 8/77
pin 1
PWM (0-12 V) PWM (0-12 V) -
#D33 #B93 Fuel volume control valve, signal (+) 8/77
pin 2
PWM (0-12 V) PWM (0-12 V) -
#D34 #B94 Fuel injector cylinder 4, signal (+) 8/9
pin 1
PWM (0-12 V) PWM (0-12 V) -
#D35 #B95 Fuel injector cylinder 4, signal (-) 8/9
pin 2
PWM (0-12 V) PWM (0-12 V) -