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Home >> Volvo >> 2015 >> XC70 T5 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Ignition And Control Systems - Design And Function >> Engine Control Module (ECM) >> Engine Control Module (ECM) [2014-2016, B4204T11] >> System Overview >> Signals
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System Overview: Signals

Input signals Output signals
Directly connected:  Directly connected: 
  • Brake light switch (3/9)
  • Clutch pedal switch, 75 % (3/271)
  • Accelerator pedal position sensor (7/51)
  • Transmission Control Module (TCM) (4/28)
  • Electronic throttle unit (4/50)
  • Mass air flow and intake air temperature sensor (7/17)
  • Boost pressure sensor (after compressor) (7/274)
  • Air pressure and Intake air temperature sensor (7/165)
  • Manifold absolute pressure sensor (7/81)
  • Supercharger control valve, bypass (6/181)
  • Engine cooling fan/Engine cooling fan control module (4/71)
  • Cooling temperature sensor (7/16)
  • Outside temperature sensor (6/62)
  • Knock sensor (7/23)
  • Fuel pressure sensor low pressure side (7/140)
  • Fuel pressure sensor high pressure side (7/162)
  • Air conditioning (A/C) pressure sensor (7/8)
  • Central Electronic Module (CEM) (4/56)
  • Ignition Antenna Unit (IAU) (16/65)
  • Engine speed sensor (7/25)
  • Engine oil level sensor (7/35)
  • Engine oil pressure and engine oil temperature sensor (7/248)
  • Camshaft position sensor, intake (7/172)
  • Camshaft position sensor, exhaust (7/173)
  • Front oxygen sensor (7/15)
  • Centre oxygen sensor (7/82)
  • Rear oxygen sensor (7/104)
  • Brake vacuum sensor (7/251)
  • Neutral Position Sensor (7/243)
  • System relay (2/32)
  • Starter motor relay, 2/35
  • Electronic throttle unit (4/50)
  • Engine cooling fan/Engine cooling fan control module (4/71)
  • Supercharger control valve, bypass (6/181)
  • Supercharger clutch (8/175)
  • Turbo control valve, By-pass (8/159)
  • Turbo control valve, Wastegate (8/200)
  • Electric thermostat (8/166)
  • Fuel pump control module / Fuel pump (4/83)
  • Fuel metering valve (8/77)
  • Fuel injector (8/6-8/9)
  • Ignition coil (20/3-20/6)
  • Control valve, engine oil pump (8/180)
  • Air conditioning (A/C) compressor (8/3)
  • Intake camshaft control valve (8/117)
  • Exhaust camshaft control valve (8/118)
  • EVAP valve (8/18)
  • Leak diagnostic unit (6/67)
  • Battery Relay (2/166)
  • Secondary Battery Relay (2/246)
  • Electric coolant pump (6/113)
Input signals Output signals
Via LIN communication 
Alternator Control Module (ACM) (6/26).
Electric coolant pump (6/113)
Via LIN communication 
Alternator Control Module (ACM) (6/26).
Electric coolant pump (6/113)