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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (2.4L - DTCS P000A To P0441) >> DTC Troubleshooting >> P0340-Camshaft Position Sensor Circuit - Bank 1 Sensor 1 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. 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 may result in possible serious or fatal injury.

    2. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

  2. (F856) 5 VOLT SUPPLY CIRCUIT VOLTAGE 
    Fig 1: Checking Camshaft 1/1 Position Sensor 5-Volt Supply Circuit
    GC0099856Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Camshaft 1/1 Position Sensor harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (F856) 5 Volt Supply circuit in the Camshaft 1/1 Position Sensor harness connector.

      Is the voltage between 4.5 and 5.5 volts?

      Yes 

      • Go To  3

      No 

      • Go To  7
  3. (K44) CMP 1/1 SIGNAL CIRCUIT VOLTAGE 
    Fig 2: Checking CMP 1/1 Signal Circuit Voltage
    GC0099857Courtesy of CHRYSLER GROUP, LLC
    1. 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 

      • Go To  4

      No 

      • Go To  11
  4. (K900) SENSOR GROUND CIRCUIT TEST 
    Fig 3: Checking Sensor Ground Circuit For Open Or High Resistance
    GC0099858Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. 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 

      • Go To  5

      No 

      • Go To  15
  5. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K44) CMP 1/1 SIGNAL CIRCUIT 
    Fig 4: Checking 5-Volt Supply Circuit For Short To CMP 1/1 Signal Circuit
    GC0099859Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (F856) 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 

      • Go To  6

      No 

      • Repair the (F856) 5 Volt Supply circuit for a short to the (K44) CMP 1/1 Signal circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  6. CAMSHAFT 1/2 POSITION SENSOR IRREGULAR SIGNAL 
    Fig 5: Checking Camshaft 1/2 Position Sensor Irregular Signal
    GC0099721Courtesy of CHRYSLER GROUP, LLC
    1. Connect the Camshaft 1/1 Position Sensor harness connector.
    2. Using a lab scope and the back probing tool (special tool #6801, Terminal Probe), backprobe the (K441) CMP 1/2 Signal circuit in the Camshaft 1/2 Position Sensor harness connector.
    3. Turn the ignition on.
    4. Wiggle the related wire harness and lightly tap on the Camshaft 1/2 Position Sensor while monitoring the lab scope screen.
    5. Start the engine.
    6. 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 

      • Go To 17

      No 

      • Go To 16
  7. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE 
    Fig 6: Checking Camshaft 1/1 Position Sensor 5-Volt Supply Circuit
    GC0099856Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Powertrain Control Module (PCM) harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (F856) 5 Volt Supply circuit in the Camshaft 1/1 Position Sensor harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (F856) 5 Volt Supply circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To 8
  8. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND 
    Fig 7: Checking CMP 1/1 Sensor 5-Volt Supply Circuit For Short To Ground
    GC0099860Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (F856) 5 Volt Supply circuit in the Camshaft 1/1 Position Sensor harness connector.

      Is the resistance above 100 Ohms?

      Yes 

      • Go To  9

      No 

      • Repair the (F856) 5 Volt Supply circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  9. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT 
    Fig 8: Checking 5-Volt Supply Circuit For Short To Sensor Ground Circuit
    GC0099861Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (F856) 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 

      • Go To  10

      No 

      • Repair the (F856) 5 Volt Supply circuit for a short to the (K900) Sensor Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  10. (F856) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 9: Checking 5-Volt Supply Circuit For Open Or High Resistance
    GC0149736Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the (F856) 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 

      • Go To  18

      No 

      • Repair the (F856) 5 Volt Supply circuit for an open circuit or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  11. (K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE 
    Fig 10: Checking CMP 1/1 Signal Circuit Voltage
    GC0099857Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Powertrain Control Module (PCM) C2 harness connector.
    3. Turn the ignition on.
    4. 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 

      • Repair the (K44) CMP 1/1 Signal circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  12
  12. (K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 11: Checking CMP 1/1 Sensor Signal Circuit For Short To Ground
    GC0099863Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. 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 

      • Go To  13

      No 

      • Repair the (K44) CMP 1/1 Signal circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  13. (K44) CMP 1/1 SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT 
    Fig 12: Checking CMP 1/1 Signal Circuit For Short To Sensor Ground Circuit
    GC0099864Courtesy of CHRYSLER GROUP, LLC
    1. 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 

      • Go To  14

      No 

      • Repair the (K44) CMP 1/1 Signal circuit for a short to the (K900) Sensor Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  14. (K44) CMP 1/1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 13: Checking CMP 1/1 Signal Circuit For Open Or High Resistance
    GC0149738Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the (K44) CMP 1/1 Signal circuit between the Camshaft 1/1 Position Sensor harness connector and the PCM C2 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  18

      No 

      • Repair the (K44) CMP 1/1 Signal circuit for an open circuit or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  15. (K900) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 14: Checking Sensor Ground Circuit For Open Or High Resistance
    GC0150457Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the PCM C2 harness connector.
    3. Measure the resistance of the (K900) Sensor Ground circuit between the Camshaft 1/1 Position Sensor harness connector and the PCM C2 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  18

      No 

      • Repair the (K900) Sensor Ground circuit for an open circuit or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  16. CAMSHAFT 1/1 POSITION SENSOR 
    1. 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).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals.
    4. Inspect the Camshaft 1/1 Position Sensor for conditions such as loose mounting screws, damage, or cracks.
    5. If no other problems are found, remove the Camshaft 1/1 Position Sensor.
    6. 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 
    1. 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).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals.
    4. Inspect the Camshaft 1/2 Position Sensor for conditions such as loose mounting screws, damage, or cracks.
    5. If no other problems are found, remove the Camshaft 1/2 Position Sensor.
    6. 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) 
    1. 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).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals.
    4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
    5. Look for the data to change or for the DTC to reset during the wiggle test.
    6. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

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