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The fuel pump relay (K27) is switched by a ground signal from the control unit at terminal 86. If the contact is closed, the fuel pump (M3) is connected to terminal 30 (B+) via terminal 87. Circuit 30 is protected by a 30 A fuse.
With models 129, 140, 202, 208, the fuse is attached to the relay.
On vehicles with two fuel pumps, the pumps are connected in parallel.
The fuel pump relay is inside of the relay module.
(With diagrams below)
Please let us know what happens.
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Thursday, November 16th, 2017 AT 11:37 AM