12
FUEL SYSTEM
Fuel pump control
The fuel pump of the electronic fuel injection system is controlled so that it operates only when the engine is running. This
is a safety device to stop the fuel pump whenever the engine stops even if the ignition switch is ON.
(1) When the ignition switch is turned ON, the main relay turns ON immediately to pass electricity as far as the upper
side of the pump relay contact point.
(2) The pump relay under the control of the ECM turns ON when any of the following conditions is met and the fuel pump
is activated as long as it is ON.
Conditions Pump ON time
• After ignition switch On 2 seconds
• When starter signal ON
• When crank angle sensor signal fed 2 seconds
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