How to check crankshaft sensor of Hyundai Trajet(2.7).

How to checkt cranshaft sensor of Hyundai Trajet 2.7 V6 DOHC  ENGINE  UNLEAD EOBD  P0335 Crankshaft Position Sensor Circuit Malfunction.

Study Component Location

 

Study General Description

Study The Crankshaft Position Sensor (CKPS) is a hall effect type sensor that generates voltage using a sensor and a target wheel mounted on the crankshaft;Study there are 58 slots in the target wheel where one is longer than the others. When Study the slot in the wheel aligns with the sensor,Study the sensor voltage outputs low. When Study the metal (tooth) in the wheel aligns with the Study sensor, the Study sensor voltage outputs high. Study During one crankshaft rotation there are 58 rectangular signals and one longer signal. Study The ECM calculates engine RPM by using the sensor’ s signal and controls the injection duration and the ignition timing. Study Using the signal differences caused by the longer slot,Study the ECM identifies which cylinder is at top dead center.

Study DTC Description

study The ECM sets DTC P0335 when the number of crankshaft teeth during one revolution is incorrect or crankshaft signal is missing while camshaft signal is detected.

Study DTC Detecting Condition

Item
Detecting Condition
Possible Cause

DTC Strategy
● Study Check Crankshaft Signal Switching
● Study Open or short in signal, ground or power supply circuit
● Study Contact resistance in connectors
● Study Damage to the connecting flange/flywheel
● Study Misadjust crankshaft and camshaft pulley position
● Study Faulty CKP sensor

Case1)
Enable Conditions
● Study Before Synchronization

Threshold Value
● Study Valid Crankshaft Teeth not yet detected with Camshaft Signal
● Study Can not detect TDC with valid Crankshaft Teeth and Camshaft Signal

Diagnosis Time
● Study 4 revolutions

Case2)
Enable Conditions
● Study After Synchronization

Threshold Value
● Study Number of Crankshaft Teeth is not correct

Diagnosis Time
● Study 5 revolutions

Signal Waveform

Terminal and Connector Inspection

1.Study Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and Study mechanical or chemical damage.

2.Study Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

3.Study Has a problem been found?

YES

1)Study Repair as necessary and go to "Verification of Vehicle Repair" Study procedure

NO

1)StudyGo to "Power Circuit Inspection" procedure

Power Supply Circuit Inspection

1.Ignition "OFF" Study

2.Disconnect CKP sensor connector Study

3.Ignition "ON" & Engine "OFF" Study

4.Study Measure voltage between terminal 1 of the sensor harness connector and chassis ground

A.Study Specification : Approx. B+

5.Is voltage within the specification of Study?

YES

1)Study Go to "Ground Circuit Inspection" procedure

NO

1)Study Check for a open in the power supply circuit between the main relay and the crankshaft position sensor,

2)Study Especially check for open or blown 10A sensor fuse refer to "Component Circuit"

3)Study Repair as necessary and go to "Verification of Vehicle Repair" procedure

Ground Circuit inspection

1.Study Ignition "OFF"

2.Study Measure resistance between terminal 3 of the sensor harness connector and chassis ground

A.Study Specification : Approx. 0Ω

3.Study Is resistance within the specification? YES

1)Study Go to "Signal Circuit Inspection" procedure

NO

1)Study Check for an open or short to battery in the ground circuit.

2)Study Repair as necessary and go to "Verification of Vehicle Repair" procedure

Signal Circuit Inspection

Check for Open in Signal Harness

1.Study Disconnect ECM connector

2.Study Measure resistance between terminals 2 of the sensor harness connector and 8 of the ECM harness connector

A.Study Specification : Approx. 0Ω

3.Study Is resistance within the specification?

YES

1)Study Go to next step as below

NO

1)Study Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for Short to Ground in Signal Harness

1.StudyMeasure resistance between terminal 2 of the sensor harness connector and chassis ground

A.Study Specification : Infinite

2.Study Is resistance within the specification?

YES

1)Study Go to next step as below

NO

1)Study Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for Short to Power in Signal Harness

1.Study Ignition "ON" & Engine "OFF"

2.Study Measure voltage between terminal 2 of the sensor harness connector and chassis ground

A.Study Specification : Approx. 0V

3.Study Is voltage within the specification?

YES

1)Study Go to "Component Inspection" procedure.

NO

1)Study Repair as necessary and go to "Verification of Vehicle Repair" procedure.

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