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Home >> Toyota >> 2018 >> Highlander XLE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (SFI System [2GR-FE] - Diagnostic Codes & Circuit Tests - (Except Hybrid)) >> SFI System >> Circuit Tests >> Fuel Pump Control Circuit [12/2013 - 11/2016] >> Description

Fuel Pump Control Circuit [12/2013 - 11/2016]: Description

WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

The fuel pump circuit consists of the ECM, fuel pump and fuel pump control ECU assembly (which operates the fuel pump). Based on the engine output, the ECM determines the fuel pump speed. The speed is then converted to a duty signal and sent to the fuel pump control ECU assembly. Based on the signal sent from the ECM, the fuel pump ECU adjusts the fuel pump operation speed.

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