Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com
Home >> Dodge >> 2008 >> Viper SRT-10 V10-8.4L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0339

P0339







P0339-CRANKSHAFT POSITION SENSOR INTERMITTENT





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
While cranking the engine and with the engine running.

- Set Condition:
When the CKP Sensor failure counter reaches 20. One Trip Fault. Three good trips to turn off the MIL.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.

Diagnostic Test

1. ACTIVE DTC
Ignition on, engine not running.
With a scan tool, select View DTCs.
Is the DTC Active at this time?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Checking for an Intermittent DTC.

2. CHECKING CRANKSHAFT POSITION SENSOR SIGNAL WITH A LAB SCOPE
Turn the ignition off.
With a lab scope probe and the Miller special tool #6801, backprobe the (K24) CKP Signal circuit in the Sensor harness connector.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Ignition on, engine not running.
Observe the lab scope screen.
Start the engine.
Observe the lab scope screen.
Are there any irregular or missing signals?

Yes

- Go To 3

No

- Go To 8

3. WIRE HARNESS INSPECTION
Turn the ignition off.
Visually inspect the related wire harness including the ground circuit. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Verify that there is good pin to terminal contact in the Crankshaft Position Sensor and Powertrain Control Module connectors.
Make sure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) are torqued to the proper specification.
Refer to any TSBs that may apply.
Were any of the above conditions present?

Yes

- Repair as necessary.
- Perform the PCM Verification Test. PCM Verification Test.

No

- Go To 4

4. (F855) 5-VOLT SUPPLY CIRCUIT OPEN OR SHORTED TO GROUND




Disconnect the CKP Sensor connector.
Ignition on, engine not running.
Measure the voltage on the (F855) 5-volt Supply circuit in the Sensor harness connector.
Is the voltage between 4.5 and 5.2 volts?

Yes

- Go To 5

No

- Repair the open or short to ground in the (F855) 5-volt Supply circuit.
- Perform the PCM Verification Test. PCM Verification Test.

5. TONE WHEEL/FLEX PLATE INSPECTION
Turn the ignition off.
Carefully disconnect the Negative Battery (Ground) cable.
Remove the Crankshaft Position Sensor.
Inspect the Tone Wheel/Flex Plate slots for damage, foreign material, or excessive movement.
Were any problems found?

Yes

- Repair or replace the Tone Wheel/Flex Plate as necessary.
- Perform the PCM Verification Test. PCM Verification Test.

No

- Go To 6

6. CHECKING CAMSHAFT POSITION SENSOR SIGNAL WITH A LAB SCOPE
Install the CKP Sensor and connect the battery cable.

NOTE: An intermittent condition in the Cam Position Sensor can cause the P0339 to set.

With the a lab scope probe and the Miller special tool #6801, backprobe the (K441) CMP Signal circuit in the Sensor harness connector.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Ignition on, engine not running.
Wiggle the related wire harness and lightly tap on the Cam Position Sensor.
Observe the lab scope screen.
Start the engine.
Observe the lab scope screen.
Are there any irregular or missing signals?

Yes

- Replace the Cam Position Sensor.
- Perform the PCM Verification Test. PCM Verification Test.

No

- Go To 7

7. CRANKSHAFT POSITION SENSOR
If there are no possible causes remaining, view repair.

Repair

- Verify that there is good pin to terminal contact in the Crankshaft Position Sensor and Powertrain Control Module connectors. If OK, replace the Crankshaft Position Sensor.
- Perform the PCM Verification Test. PCM Verification Test.

8. (K24) CKP SIGNAL CIRCUIT SHORTED TO VOLTAGE




Turn the ignition off.
Disconnect the C2 PCM harness connector.
Disconnect the CKP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K24) CKP Signal circuit in the Sensor harness connector.
Wiggle the related wire harness while taking this measurement.
Is the voltage above 0 volts?

Yes

- Repair the short to voltage in the (K24) CKP Signal circuit.
- Perform the PCM Verification Test. PCM Verification Test.

No

- Go To 9

9. (K24) CKP SIGNAL CIRCUIT OPEN




Turn the ignition off.
Measure the resistance in the (K24) CKP Signal circuit from the CKP harness connector to the C1 PCM harness connector.
Wiggle the wire harness while taking this measurement.
Is the resistance below 1.0 ohm?

Yes

- Go To 10

No

- Repair the excessive resistance in the (K24) CKP Signal circuit.
- Perform the PCM Verification Test. PCM Verification Test.

10. (K24) CKP SIGNAL CIRCUIT SHORTED TO GROUND




Measure the resistance between ground and the (K24) CKP Signal circuit in the CKP Sensor harness connector.
Wiggle the related wire harness while monitoring the resistance value.
Does the resistance ever go below 100 ohms?

Yes

- Repair the short to ground in the (K24) Signal circuit.
- Perform the PCM Verification Test. PCM Verification Test.

No

- Go To 11

11. (K24) CKP SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT




Measure the resistance between the (F855) 5-volt Supply circuit and the (K24) CKP Signal circuit in the CKP harness connector.
Wiggle the related wire harness while taking this measurement.
Is the resistance below 5.0 ohms?

Yes

- Repair the short between the (F855) 5-volt Supply circuit and the (K24) CKP Signal circuit.
- Perform the PCM Verification Test. PCM Verification Test.

No

- Go To 12

12. POWERTRAIN CONTROL MODULE (PCM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Crankshaft Position Sensor and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Verify that there is good pin to terminal contact in the Crankshaft Position Sensor and Powertrain Control Module connectors.
Search for any Technical Service Bulletins that may apply.
Were there any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test. PCM Verification Test

No

- Replace and program the Powertrain Control Module.
- Perform the PCM Verification Test. PCM Verification Test.

pro multis · About Operation CHARM