AutoHex Online Help: Hyundai H-1(A1) 2004 Fault Code: p0340

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P0340 Camshaft Position Sensor A Circuit Malfunction (Bank 1)

AutoHex Online Help: Hyundai H-1(A1) 2004

TROUBLESHOOTING FOR DTCS (MELCO EMS)

DTC	Diagnostic item
P0340	Camshaft Position Sensor Circuit Malfunction

DESCRIPTION

The Camshaft Position (CMP) sensor senses the Top Dead Center (TDC)point of the #1 cylinder in the compression stroke. The CMP sensor signalallows the ECM to determine the fuel injector sequence starting point.

TROUBLESHOOTING GUIDE

DTC detection condition	Probable cause
Background · When the engine is running, the Camshaft Position sensor output a pulse signal. · The Engine Control Module checks whether the pulse signal is input. Check Area, Judgement Criteria · Sensor output voltage has not changed (no pulse signal is input) for 4 sec. Check Area, Judgement Criteria · Normal signal pattern has not been input for cylinder identification from the camshaft position sensor signal for 4 sec.	· Camshaft Position sensor malfunction · Open or shorted camshaft position sensor circuit or loose connector · Engine control module failed

DTC detection condition

Probable cause

Background

· When the engine is running, the Camshaft Position sensor output a pulse signal.

· The Engine Control Module checks whether the pulse signal is input.

Check Area, Judgement Criteria

· Sensor output voltage has not changed (no pulse signal is input) for 4 sec.

Check Area, Judgement Criteria

· Normal signal pattern has not been input for cylinder identification from the camshaft position sensor signal for 4 sec.

· Camshaft Position sensor malfunction

· Open or shorted camshaft position sensor circuit or loose connector

· Engine control module failed

CIRCUIT DIAGRAM

TEST PROCEDURE