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 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