Discovery II
ENGINE MANAGEMENT SYSTEM - V8
DESCRIPTION AND OPERATION
18-2-7
The ECM controls the following outputs:
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Fuel injectors (1 per cylinder).
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Ignition coils/ high tension leads/ spark plugs.
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Fuel pump relay.
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Idle air control valve.
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Heated oxygen sensors.
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EVAP canister purge valve.
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EVAP canister vent solenoid (CVS) valve (where fitted).
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Malfunction Indicator Lamp (MIL)/ service engine soon lamp (where fitted).
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Hill descent control (via SLABS interface).
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EVAP system fuel leak detection pump (where fitted)
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Secondary air injection pump (where fitted)
The ECM also interfaces with the following:
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Diagnostics via diagnostic connector with TestBook.
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Controller Area Network (CAN) link to EAT ECU.
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Air conditioning system.
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Self Levelling & Anti-lock Braking System (SLABS) ECU.
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Immobilisation system via the body control unit (BCU).
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Instrument cluster.
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Cruise control ECU
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Active Cornering Enhancement (ACE) ECU