Fuel pump relay (102), T8
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Fuel pump relay (102), T8
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Pin No.
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Signal type
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Description
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1 (86)
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Control
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Relay coil control lead. Supplied B+ from ECM pin 51(A).
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2 (85)
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Ground
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Relay coil grounding in grounding point G34S.
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3 (30)
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+30
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Power supply to the relay contact from fuse 2 (727).
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5 (87)
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Output, B+
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Relay switch's output.
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The fuel pump relay is controlled from pin 51(A), which supplies B+ when the relay triggers. When the ignition is switched "ON", the fuel pump relay triggers for 1 second. This builds up pressure before pre-injection, which takes place when the crankshaft begins to rotate.
When the crankshaft then rotates, relay 7 is pulled until the ignition leaves the ON position or the crankshaft stops rotating.
