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Saturday, December 25, 2010

How to Check the Secondary Fuel Pump of CRDI?

How to Check the Secondary Fuel Pump of CRDI?

 

How to Check the Secondary Fuel Pump of Fuel Pump?

 

Model: Hyundai Cars

Fuel: Diesel

Year of Model:2011

Displacement: 2000cc

 

2011  D 2.0 CRDI  Engine  Engine Control P0231 Fuel Pump Secondary Circuit Low

 

 

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Study Guide and Component Location

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Study Guide and General Description

Study Vain pump type fuel pump which is driven by electric motor is applied to this vehicle. Study Fuel pump which is installed inside of fuel tank supplies fuel to high pressure pump. Study ECM controls Fuel pump relay to supply power to low pressure fuel pump. Study The relay operates for 1.5 sec. for the diagnosis fuel pump relay at IG KEY ON, then if engine speed above 45rpm is detected by CKPS, relay turns ON and fuel is supplied to high pressure pump.

Study Guide and DTC Description

Study the P0231 is set when no current or excessively low current is detected in fuel pump relay control circuit for more than 1 sec. Study at Fuel pump relay ON condition. This code is due to open or short to ground in glow relay control circuit or internal open in Fuel pump relay component.

Study Guide and DTC Detecting Condition

Item

Detecting Condition

Possible Cause

Study

DTC Strategy

Voltage monitoring

Fuel pump relay control circuit

Fuel pump relay component

Study

Enable Conditions

IG KEY "ON" (monitoring only performed within relay operating condition)

Study

Threshold Value

Short to GND

Wiring open

Study

Diagnostic Time

1.0 sec.

Fail Safe

Fuel cut

NO

-

EGR Off

NO

Fuel Limit

NO

Check Lamp

OFF

Specification

Relay Coil Resistance

Motor Type

Pumping Pressure

75±10Ω(20°C)

Electric motor type vein pump

4 - 5 bar

Study Guide , Study Guide , Study Guide , Study Guide , Study Guide , Study Guide

1 comments:

Robert said...

Thank you for the information I need to know how much a relay of these is worth.

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