P0336-CRANKSHAFT POSITION SENSOR PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Crankshaft Position (CKP) Sensor is a hall effect type sensor. The sensor produces a 5 Volt digital signal (square wave). The PCM provides a 5-Volt supply, 5-Volt sensor signal and ground to the CKP Sensor. The sensor is positioned opposite a magnetic ring at the rear of the crankshaft. The magnetic ring contains internal magnetic strips (electric teeth) that act on the hall-effect switch causing the digital switching of the sensor signal from high (5 Volts) to low (0 Volts).

When Monitored:
With the engine cranking or running.
Set Condition:
The Powertrain Control Module (PCM) does not receive a signal from the Crankshaft Position Sensor (CKP) when the Camshaft Position Sensor (CMP) indicates engine rpm.

Possible Causes
(K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT OPEN/HIGH RESISTANCE
(K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO THE (K925) CKP SENSOR GROUND CIRCUIT
(K24) CKP SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K24) CKP SENSOR SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
(K24) CKP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(K24) CKP SENSOR SIGNAL CIRCUIT SHORTED TO THE (K925) CKP SENSOR GROUND CIRCUIT
(K925) CKP SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
CRANKSHAFT POSITION SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

1. VERIFY ACTIVE DTC

NOTE: The Timing Belt/Chain must be correctly installed and operational before diagnosis can be made. Refer to the service information to ensure the timing belt is properly installed.

NOTE: If the PCM detects and stores a DTC, the PCM also stores the engine/vehicle operating conditions under which the DTC was set. Some of these conditions are displayed on the scan tool at the same time the DTC is displayed. Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when checking for an active DTC.

1.	Turn the ignition on.

2.	With the scan tool, erase the PCM DTCs.

3.	Attempt to start the engine cranking the engine for at least 7 seconds.

4.	With the scan tool, read the PCM DTCs.

NOTE: If any Sensor Reference DTCs are present, perform the applicable diagnostic procedure before continuing with this test.

Does the scan tool display this DTC?

Yes

Go To 3

Go To 2

2. TEST DRIVE

1.	Turn the ignition on.

2.	With the scan tool, erase the PCM DTCs.

3.	Test drive the vehicle.

4.	With the scan tool, read the PCM DTCs.

Does the scan tool display this DTC?

Yes

Go To 3

Perform the INTERMITTENT DTC diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

3. CHECK THE (K24) CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT

1.	Turn the ignition off.

2.	Disconnect the Crankshaft Position Sensor harness connector.

3.	Turn the ignition on.

4.	Measure the voltage of the (K24) CKP Sensor Signal circuit at the CKP Sensor harness connector.

Select the appropriate voltage reading.

Voltage is above 5.2 Volts

Go To 4

Voltage is between 4.8 and 5.2 Volts

Go To 5

Voltage is below 4.8 Volts

Go To 11

4. CHECK THE (K24) CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

1.	Turn the ignition off.

2.	Disconnect the PCM harness connectors.

3.	Remove the ASD Relay.

4.	Connect a jumper wire between cavity 30 and cavity 87 of the ASD Relay connector.

5.	Turn the ignition on.

6.	Measure the voltage of the (K24) CKP Sensor Signal circuit at the CKP Sensor harness connector.

Is the voltage below 1.0 Volt?

Yes

Replace and program the Powertrain Control Module in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

Repair the (K24) Crankshaft Position Sensor Signal circuit for a short to voltage.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

5. CHECK THE (K853) CRANKSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT

1.	Measure the voltage of the (K853) CKP Sensor 5-Volt Supply circuit at the CKP Sensor harness connector.

Select the appropriate voltage reading.

Voltage is above 5.2 Volts

Repair the (K853) CKP 5-Volt Supply circuit for a short to voltage.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

Voltage is between 4.8 and 5.2 Volts

Go To 6

Voltage is below 4.8 Volts

Go To 8

6. CHECK THE (K925) CRANKSHAFT POSITION SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE

1.	Turn the ignition off.

2.	Disconnect the PCM C1 harness connector.

3.	Measure the resistance of the (K925) CKP Sensor Ground circuit between the CKP Sensor harness connector and the PCM C1 harness connector.

Is the resistance below 5.0 Ohms?

Yes

Go To 7

Repair the (K925) CKP Sensor Ground circuit for an open or high resistance.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

7. DAMAGED CRANKSHAFT POSITION SENSOR OR CRANKSHAFT

1.	Turn the ignition off.

2.	Remove the CKP Sensor.

3.	Inspect the CKP Sensor for conditions such as loose mounting screws, damage, or cracks.

4.	Inspect the Crankshaft magnetic ring for conditions such as damage, or debris.

Is there any evidence of these conditions?

Yes

Replace and program the Powertrain Control Module in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

Replace the Crankshaft Position Sensor in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

8. CHECK THE (K853) CRANKSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE

1.	Turn the ignition off.

2.	Disconnect the PCM C1 harness connector.

3.	Measure the resistance of the (K853) CKP Sensor 5-Volt Supply circuit between the PCM C1 harness connector and the CKP Sensor harness connector.

Is the resistance below 5.0 Ohms?

Yes

Go To 9

Repair the (K853) CKP Sensor 5-Volt Supply circuit for an open or high resistance.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

9. CHECK THE (K853) CRANKSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND

1.	Measure the resistance between ground and the (K853) CKP Sensor 5-Volt Supply circuit at the CKP Sensor harness connector.

Is the resistance above 10k Ohms?

Yes

Go To 10

Repair the (K853) CKP Sensor 5-Volt Supply circuit for a short to ground.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

10. CHECK FOR THE (K853) CRANKSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO THE (K925) CKP SENSOR GROUND CIRCUIT

1.	Measure the resistance between the (K853) CKP Sensor 5-Volt Supply circuit and the (K925) CKP Sensor Ground circuit at the CKP Sensor harness connector.

Is the resistance above 10k Ohms?

Yes

Replace and program the Powertrain Control Module in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

Repair the (K853) CKP Sensor 5-Volt Supply circuit for a short to the (K925) CKP Sensor Ground circuit.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

11. CHECK THE (K24) CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

1.	Disconnect the PCM C1 harness connector.

2.	Measure the resistance of the (K24) CKP Sensor Signal circuit between the PCM C1 harness connector and the CKP Sensor harness connector.

Is the resistance below 5.0 Ohms?

Yes

Go To 12

Repair the (K24) CKP Sensor Signal circuit for an open or high resistance.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

12. CHECK THE (K24) CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

1.	Measure the resistance between ground and the (K24) CKP Sensor Signal circuit at the CKP Sensor harness connector.

Is the resistance above 10k Ohms?

Yes

Go To 13

Repair the (K24) CKP Sensor Signal circuit for a short to ground.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

13. CHECK FOR THE (K24) CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT SHORTED TO THE (K925) CKP SENSOR GROUND CIRCUIT

1.	Measure the resistance between the (K24) CKP Sensor Signal circuit and the (K925) CKP Sensor Ground circuit at the CKP Sensor harness connector.

Is the resistance above 10k Ohms?

Yes

Replace and program the Powertrain Control Module in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

Repair the (K24) CKP Sensor Signal circuit for a short to the (K925) CKP Sensor Ground circuit.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

P0336-CRANKSHAFT POSITION SENSOR PERFORMANCE

Theory of Operation

Possible Causes