FUEL PUMP CONTROL OPERATION [L8, LF, L3]
id0140a5102200
Operation Condition
• When the ignition switch is turned to the ON position, the PCM turns the fuel pump relay on for 1 s, then off.
• When it is detected that the NE signal rises during cranking, the fuel pump relay turns on.
• When the engine is stopped, the fuel pump relay turns off.
Operation Inhibition Condition
• When receiving an engine stop request signal from the immobilizer system, the PCM force-stops control of the fuel injectors. As a result, the engine does not start.
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1
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When engine stop request signal is received
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2
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When not receiving engine stop request signal
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3
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From main relay
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4
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From battery
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5
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Fuel pump relay
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6
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Fuel pump
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