Where is the High Pressure Fuel Pump Located in the Highlander?
2 Answers
Highlander's high pressure fuel pump is located in the engine compartment. Below are the specific details: 1. Function of the high pressure fuel pump: The high pressure fuel pump compresses low-pressure fuel in the low-pressure fuel line into high-pressure fuel, which is then delivered to the fuel common rail through the high-pressure fuel line. 2. Working principle of the high pressure fuel pump: The high pressure fuel pump consists of the pump body, intake valve (high pressure fuel pump solenoid valve), pump piston, outlet valve (check valve, mechanical device), and the pump chamber formed by the pump body with the intake/outlet valves. The high pressure fuel pump is mechanically driven by a square cam installed on the camshaft, converting low-pressure fuel into high-pressure fuel. The conversion process mainly involves three stages: fuel suction, compression, and fuel pumping.
I've driven my Highlander for several years, and the high-pressure fuel pump is located in the engine compartment, usually on the right side near the engine. When you open the hood, you'll see a black or silver pump body connected to the fuel lines, specifically near the front wheels for easy identification. I remember the mechanic pointed it out during the last repair, as the Highlander's design ensures high fuel delivery efficiency—don't mistake it for other components. When checking it yourself, make sure the engine is off and cooled down, then gently shake it to check if the connections are secure. The position is fixed but may vary slightly across different models, with the maintenance manual indicating the general area. It's advisable not to disassemble it yourself, as it involves fuel pressure and can be risky; professional servicing is safer and more reliable. Fellow forum members have shared similar experiences, confirming the location is consistent and rarely mistaken.
