Jet Pump

The jet pump is an additional pump used when the fuel tank bottom is divided into two chambers. Excess fuel flowing through the fuel return passes through a venturi. This creates a low pressure area around the venturi, and this action will draw the fuel out of Chamber B, and sends it into Chamber A.

Fuel Pump Control

--By ECM

- ON/OFF Control —

By Fuel Pump Switch

Fuel Pump

Control Method

By ECM and Fuel Pump

— Control Relay and

- ON/OFF Control—

Resistor

With Speed

By ECM and Fuel

Pump ECU

Fig. 4-06

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment