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01 Relays and Modules02 Sensors and Switches03 Maintenance04 Engine, Cooling and Exhaust05 Powertrain Management06 Transmission and Drivetrain07 Brakes and Traction Control08 Starting and Charging09 Power and Ground Distribution10 Steering and Suspension11 Heating and Air Conditioning12 Restraint Systems13 Accessories and Optional Equipment14 Body and Frame15 Cruise Control16 Instrument Panel, Gauges and Warning Indicators17 Lighting and Horns18 Windows and Glass19 Wiper and Washer Systems
Volvo V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998)01 · Relays and Modules
01 · Diagnostics

Engine Control Module: Diagrams (page 4 of 8)

Make
Volvo
Model
V70R AWD
Engine
L5-2.3L Turbo VIN 52 B5234T6
Year
1998
Section
Relays and Modules - Powertrain Management › Relays and Modules - Computers and Control Systems › Engine Control Module
Relays and ModulesDiagrams · page 4 of 8
Engine Control Module: Diagrams (page 4 of 8) – Volvo V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998)

^  Ignition, by transmitting signals to the Ignition Discharge Module (IDM) integrated with the Ignition Coil (4/44)
^  Idling speed, by operating the Idle Air Control (IAC) Valve (8/5)
^  Pressure in the inlet manifold during engine braking by regulating the Idle Air Control (IAC) Valve (8/5)
^  Engine cooling fan, by activating the Fan Control (FC) Relay (2/11)
^  EVAP System Canister Purge (CP) Valve (8/18)
^  Malfunction Indicator Lamp (MIL) (10/106) for exhaust emission related faults    
^  Heating of front and rear Heated Oxygen Sensors (HO2S) (7/15 and 7/82)
^  A/C Compressor Relay (2/22), to switch off the compressor.
^  EVAP Canister Shut-Off Valve (8/44)
^  Pulsed Secondary Air Injection System (PAIR) Pump, by activating the Pulsed Secondary Air Injection System (PAIR) Pump Relay (2/53).

OTHER OUTPUT SIGNALS

The Engine Control Module also transmits signals to the following components:

    

^  Acknowledgment of torque limiting through timing retardation, to the Automatic Transmission Control Module (TCM) (4/28)
^  Engine speed and load signals to the Automatic Transmission Control Module (TCM) (4/28)
^  Throttle angle signal to the Automatic Transmission Control Module (TCM) (4/28)
^  Engine Speed (RPM) Signal to the Combined Instrument Panel Tachometer (5/1)
^  Engine Coolant Temperature (ECT) Signal to the Combined Instrument Panel (5/1)
^  Injected fuel quantity to the Combined Instrument Trip Computer (5/4)

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The same page in: V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998), V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998), V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998).

Parts & tools for this job For 1998 Volvo V70R 2.3L

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