Mechanics

CAMSHAFT POSITION SENSOR

2004 Dodge Neon

Electrical problem
2004 Dodge Neon 4 cyl Front Wheel Drive Automatic

I have a 2004 Dodge Neon. My engine light came on and I used my diagnostic tool to retrieve the trouble code. I got a P0340 Camshaft Position Sensor Circuit Malfunction. There is no Haynes Repair Manual for this car. Where is the Camshaft Position Sensor located so I can replace it?
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Spencenvickie
August 12, 2008.




This is ALL I have good luck let me know if more needed

POWERTRAIN DIAGNOSTIC PROCEDURES -2004 Dodge Neon SE
Page 1 of 7
Symptom: P0340-CAMSHAFT POSITION SENSOR CIRCUIT

When Monitored and Set Condition: When Monitored: Engine cranking/running. Battery voltage greater than 10 volts.
Set Condition: At least 5 seconds or 2.5 engine revolutions have elapsed with crankshaft position sensor signals present but no camshaft position sensor signal. One Trip Fault.

POSSIBLE CAUSES
INTERMITTENT CRANKSHAFT POSITION SENSOR SIGNAL INTERMITTENT CAMSHAFT POSITION SENSOR SIGNAL (K7) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND (K7) 5 VOLT SUPPLY CIRCUIT OPEN (K7) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE (K44) CMP SIGNAL CIRCUIT SHORTED GROUND (K44) CMP SIGNAL CIRCUIT OPEN (K44) CMP SIGNAL CIRCUIT SHORTED TO VOLTAGE (K44) CMP SIGNAL SHORTED TO (K7) 5 VOLT SUPPLY CIRCUIT (K4) SENSOR GROUND CIRCUIT OPEN PCM - (K7) 5 VOLT SUPPLY PCM - (K44) CMP SIGNAL CAMSHAFT POSITION SENSOR

DIAGNOSTIC PROCEDURE
1. Start the engine.
With the DRBIII(R), read the CMP SYNC State.
Does the DRBIII(R) display the CMP SYNC State IN SYNC?
Yes : Go To 2 No : Go To 4 2. Turn the ignition off.
With the DRBIII(R) lab scope probe and the Miller special tool #6801, back probe the (K24) CKP signal circuit in the CKP harness connector.

WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE

Page 2 of 7
CLOTHING.
Ignition on, engine not running.
Wiggle the related wire harness and lightly tap the Crankshaft Position Sensor.
Observe the lab scope screen.
Start the engine.
Allow the engine to idle.
Observe the lab scope screen.
Did the CKP Sensor generate any erratic pulses?
Yes : Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Go To 3 3. Turn the ignition off.
With the DRBIII(R) lab scope probe and the Miller special tool #6801, backprobe the (K44) CMP Signal circuit in the CMP harness connector.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Ignition on, engine not running.
Wiggle the related wire harness and lightly tap on the Camshaft Position Sensor.
Observe the lab scope screen.
Start the engine.
Allow the engine to idle.
Observe the lab scope screen.
Did the CMP Sensor generate any erratic pulses?
Yes : Repair as necessary.

Page 3 of 7
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Test Complete. 4. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K7) 5 Volt Supply circuit in the CMP Sensor harness connector.
Is the voltage between 4.5 and 5.5 volts?
Yes : Go To 5 No : Go To 13 5. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K44) CMP Signal circuit in the CMP Sensor harness connector.
Is the voltage between 4.5 and 5.0 volts?
Yes : Go To 6 No : Go To 8 6. Turn, the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K4) Sensor Ground circuit from the CMP Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes : Go To 7 No : Repair the open in the (K4) Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

Page 4 of 7
NOTE: Inspect the Camshaft sprocket for damage per the Service Information. If a problem is found repair as necessary.
7. If there are no possible causes remaining, view repair. Repair: Replace the Camshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
8. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K44) CMP Signal circuit in the CMP Sensor harness connector.
Is the resistance below 100 ohms?
Yes : Repair the short to ground in the (K44) CMP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Go To 9 9. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K44) CMP Signal circuit from the CMP Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes : Go To 10 No : Repair the open in the (K44) CMP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
10. Turn the ignition off.

Page 5 of 7
Disconnect the CMP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K44) CMP Signal circuit in the CMP Sensor harness connector.
Is the voltage above 5.2 volts?
Yes : Repair the short to battery voltage in the (K44) CMP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Go To 11 11. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Measure the resistance between the (K44) CMP Signal circuit and the (K7) 5 Volt Supply circuit in the CMP Sensor harness connector.
Is the resistance below 5.0 ohms?
Yes : Repair the (K44) CMP Signal circuit shorted to the (K7) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Go To 12
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
12. If there are no possible causes remaining, view repair. Repair: Replace and program the Powertrain Control Module in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
13. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K7) 5 Volt Supply circuit in the CMP Sensor harness connector.
Is the resistance below 100 ohms?
Yes : Repair the short to ground in the (K7) 5 Volt Supply circuit.

Page 6 of 7
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Go To 14 14. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K7) 5 Volt Supply circuit between the CMP Sensor harness connector and the special tool #8815 terminal.
Is the resistance below 5.0 ohms?
Yes : Go To 15 No : Repair the open in the (K7) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
15. Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K7) 5 Volt Supply circuit in the CMP Sensor harness connector.
Is the voltage above 5.5 volts?
Yes : Repair the short to battery voltage in the (K7) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No : Go To 16
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
16. If there are no possible causes remaining, view repair. Repair: Replace and program the Powertrain Control Module in accordance with the Service Information.

8/12/2008
POWERTRAIN DIAGNOSTIC PROCEDURES -2004 Dodge Neon SE
Page 7 of 7
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

8/12/2008

BMRFIXIT
Aug 12, 2008.
And the location


http://www.2carpros.com/forum/automotive_pictures/99387_neon_24_1.jpg



http://www.2carpros.com/forum/automotive_pictures/99387_cam_neon_20_1.jpg

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BMRFIXIT
Aug 12, 2008.

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