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### DTC P0335/12 Crankshaft Position Sensor "A" Circuit

### DTC P0339/13 Crankshaft Position Sensor "A" Circuit Intermittent

## for Preparation Click here

## DESCRIPTION

The crankshaft position sensor system consists of a crankshaft position sensor plate and a pickup coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of an iron core and magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 34 signals for each engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the common rail system is controlled.

DTC No. | DTC Detection Condition | Trouble Area

P0335/12

1. No crankshaft position sensor signal to ECM while cranking (1 trip detection logic)
2. No crankshaft position sensor signal to ECM with engine speed 600 rpm or more (1 trip detection logic)

1. Open or short in crankshaft position sensor circuit
2. Crankshaft position sensor
3. Crankshaft position sensor No. 1 plate
4. ECM

P0339/13

No crankshaft position sensor signal to ECM is input for 0.05 seconds or more, and conditions 1, 2 and 3 are met
(1 trip detection logic):

1. Engine is at 1,000 rpm or more
2. STA signal is OFF
3. 3 seconds or more have elapsed after STA signal is switched from ON to OFF

1. Open or short in crankshaft position sensor circuit
2. Crankshaft position sensor
3. Crankshaft position sensor No. 1 plate
4. ECM

## WIRING DIAGRAM

## INSPECTION PROCEDURE

HINT:

1. If no trouble is found in the diagnostic troubleshooting procedure of DTC P0335, troubleshoot the engine mechanical system.
2. Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, and other data from the time the malfunction occurred.

NOTICE:

  If the ECM is replaced, the new ECM needs initialization (Click here).

1.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

1. Disconnect the C4 sensor connector.

1. Measure the resistance of the sensor.

   Standard resistance:

     Tester Connection | Condition | Specified Condition
     1 - 2 | Cold | 1,630 to 2,740 Ω
     1 - 2 | Hot | 2,065 to 3,225 Ω

   NOTICE:
     In the chart above, the terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).

   HINT:
     While cranking or idling the engine, check the waveform of the ECM connectors using an oscilloscope.

   Reference:

     Tester Connection | Specified Condition
     E7-23 (G+) - E7-31 (G-) E8-27 (NE+) - E8-34 (NE-) | Correct waveform is as shown

   Tool Setting | Condition
   5 V/DIV., 20 msec./DIV. | Idling with warm engine

   HINT:
     The waveform varies depending on the engine speed.

| NG |

REPLACE CRANKSHAFT POSITION SENSOR

OK |

2.CHECK WIRE HARNESS (CRANKSHAFT POSITION SENSOR - ECM)

1. Disconnect the C4 sensor connector.

1. Disconnect the E8 ECM connector.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:

     Tester Connection | Specified Condition
     C4-1 - E8-27 (NE+) | Below 1 Ω
     C4-2 - E8-34 (NE-) | Below 1 Ω
     C4-1 or E8-27 (NE+) - Body ground | 10 kΩ or higher
     C4-2 or E8-34 (NE-) - Body ground | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

3.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

1. Check the sensor installation.

   OK:
     Sensor is installed correctly.

| NG |

SECURELY REINSTALL SENSOR

OK |

4.CHECK CRANKSHAFT POSITION SENSOR NO. 1 PLATE

1. Check the teeth of the crankshaft position sensor No. 1 plate.

   OK:
     Plate's teeth do not have any cracks or deformation.

| NG |

REPLACE CRANKSHAFT POSITION SENSOR NO. 1 PLATE

OK |

REPLACE ECM