2007 Compass Patriot MK Factory Service Manual 9 - ENGINE

P0341-CAMSHAFT POSITION SENSOR PERFORMANCE-BANK 1 SENSOR 1





For a complete wiring diagram Refer to Section 8W



Possible Causes
  
INTERMITTENT DTC
  
(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
  
(K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE
  
(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
  
(K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO GROUND
  
(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K44) CMP 1/1 SIGNAL CIRCUIT
  
(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
  
(K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
  
(K857) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE
  
(K44) CMP 1/1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
  
(K900) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
  
CAMSHAFT 1/1 POSITION SENSOR
  
CAMSHAFT 1/2 POSITION SENSOR
  
POWERTRAIN CONTROL MODULE (PCM)
  

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - STANDARD PROCEDURE)



Diagnostic Test

1. DTC IS ACTIVE

Start the engine and allow it to reach operating temperature. If the engine will not start, crank the engine for several seconds.

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.


With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes


No

2. (K857) 5 VOLT SUPPLY CIRCUIT VOLTAGE



Turn the ignition off.
Disconnect the Camshaft 1/1 Position Sensor connector.
Turn the ignition on.
Measure the voltage of the (K857) 5 Volt Supply circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the voltage between 4.5 and 5.5 volts?

Yes


No

3. (K44) CMP 1/1 SIGNAL CIRCUIT VOLTAGE



Measure the voltage of the (K44) CMP 1/1 Signal circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the voltage between 4.5 and 5.5 volts?

Yes


No

4. (K900) SENSOR GROUND CIRCUIT TEST



Turn the ignition off.
Using a 12 volt test light connected to 12 volts, check the (K900) Sensor Ground in the Camshaft 1/1 Position Sensor harness connector.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.



Is the test light illuminated and bright?

Yes


No

5. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K44) CMP 1/1 SIGNAL CIRCUIT



Measure the resistance between the (K857) 5 Volt Supply circuit and the (K44) CMP 1/1 Signal circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the resistance above 100 ohms?

Yes


No

6. CAMSHAFT 1/2 POSITION SENSOR IRREGULAR SIGNAL



Connect the Camshaft 1/1 Position Sensor connector.
Using a lab scope and the Miller special tool #6801, backprobe the (K441) CMP 1/2 Signal circuit in the Camshaft 1/2 Position Sensor harness connector.
Ignition on, engine not running.
Wiggle the related wire harness and lightly tap on the Camshaft 1/2 Position Sensor while monitoring the lab scope screen.
Start the engine.
Monitor the Camshaft 1/2 Position Sensor signal on the lab scope screen.

Were any Camshaft 1/2 Position Sensor signals irregular or missing?

Yes


No

7. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE



Turn the ignition off.
Disconnect the Powertrain Control Module (PCM) connector.
Turn the ignition on.
Measure the voltage of the (K857) 5 Volt Supply circuit in the Camshaft 1/1 Position Sensor harness connector.

Is there any voltage present?

Yes


No

8. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND



Turn the ignition off.
Measure the resistance between ground and the (K857) 5 Volt Supply circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the resistance above 100 ohms?

Yes


No

9. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT



Measure the resistance between the (K857) 5 Volt Supply circuit and the (K900) Sensor Ground circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the resistance above 100 ohms?

Yes


No

10. (K857) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE



Measure the resistance of the (K857) 5 Volt Supply circuit between the Camshaft 1/1 Position Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

Is the resistance below 5.0 ohms?

Yes


No

11. (K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE



Turn the ignition off.
Disconnect the Powertrain Control Module (PCM) connector.
Turn the ignition on.
Measure the voltage of the (K44) CMP 1/1 Signal circuit in the Camshaft 1/1 Position Sensor harness connector.

Is there any voltage present?

Yes


No

12. (K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO GROUND



Turn the ignition off.
Measure the resistance between ground and the (K44) CMP 1/1 Signal circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the resistance above 100 ohms?

Yes


No

13. (K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT



Measure the resistance between the (K44) CMP 1/1 Signal circuit and the (K900) Sensor Ground circuit in the Camshaft 1/1 Position Sensor harness connector.

Is the resistance above 100 ohms?

Yes


No

14. (K44) CMP 1/1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE



Measure the resistance of the (K44) CMP 1/1 Signal circuit between the Camshaft 1/1 Position Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

Is the resistance below 5.0 ohms?

Yes


No

15. (K900) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE



Turn the ignition off.
Disconnect the Powertrain Control Module (PCM) connector.
Measure the resistance of the (K900) Sensor Ground circuit between the Camshaft 1/1 Position Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

Is the resistance below 5.0 ohms?

Yes


No

16. CAMSHAFT 1/1 POSITION SENSOR

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft 1/1 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.
Inspect the Camshaft 1/1 Position Sensor for conditions such as loose mounting screws, damage, or cracks.
If no other problems are found, remove the Camshaft 1/1 Position Sensor.
Inspect the Camshaft 1/1 Position Sensor and mounting area for any condition that would result in an incorrect signal, such as damage, foreign material, or excessive movement.

Were any problems found?

Yes


No

17. CAMSHAFT 1/2 POSITION SENSOR

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft 1/2 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.
Inspect the Camshaft 1/2 Position Sensor for conditions such as loose mounting screws, damage, or cracks.
If no other problems are found, remove the Camshaft 1/2 Position Sensor.
Inspect the Camshaft 1/2 Position Sensor and mounting area for any condition that would result in an incorrect signal, such as damage, foreign material, or excessive movement.

Were any problems found?

Yes


No

18. POWERTRAIN CONTROL MODULE (PCM)

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft 1/1 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.
Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes


No