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Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1296 (2.4L - DTCS P0304 To P0643) >> DTC Troubleshooting >> P0344-Camshaft Position Sensor Intermittent - Bank 1 Sensor 1 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    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, read DTCs and record on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. CHECK FOR OTHER DTCS 
    1. Refer to the recorded DTCs.

      Are there any 5-Volt Reference DTCs active or pending?

      Yes 

      No 

      • Go To  3
  3. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Camshaft Position Sensor harness connector.
    3. Turn the ignition on.
    4. Measure the voltage on the (F856) 5-Volt Supply circuit in the Camshaft Position Sensor harness connector.

      Is the voltage between 4.8 and 5.2 volts?

      Yes 

      • Go To  4

      No 

      • Repair the (F856) 5-Volt Supply circuit for an open or shorted circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  4. CHECK THE (K441) CMP SIGNAL CIRCUIT VOLTAGE 
    1. Measure the voltage on the (K441) CMP Signal circuit in the Camshaft Position Sensor harness connector.

      Is the voltage between 4.8 and 5.2 volts?

      Yes 

      • Go To  5

      No 

      • Go To  8
  5. CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (K900) Sensor Ground at the Camshaft Position Sensor harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  6

      No 

      • Go To  12
  6. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO THE (K441) CMP SIGNAL CIRCUIT 
    1. Check for continuity between the (F856) 5-Volt Supply circuit and the (K441) CMP Signal circuit in the Camshaft Position Sensor harness connector.

      Is there continuity between the (F856) 5-Volt Supply circuit and the (K441) CMP Signal circuit in the Camshaft Position Sensor harness connector?

      Yes 

      • Repair the (F856) 5-Volt Supply circuit for a short to the (K441) CMP Signal circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  7
  7. CHECK FOR AN IRREGULAR SIGNAL FROM THE CAMSHAFT POSITION SENSOR 
    1. Reconnect the Camshaft Position Sensor connector.
    2. Using a lab scope and the (special tool #6801, Terminal Probe), back probe the (K441) CMP Signal circuit in the Camshaft Position Sensor harness connector.
    3. Turn the ignition on.
    4. Wiggle the related wire harness and lightly tap on the Camshaft Position Sensor while monitoring the lab scope screen.
    5. Start the engine.
    6. Monitor the Camshaft Position Sensor signal on the lab scope screen.

      Were any Camshaft Position Sensor signals irregular or missing?

      Yes 

      • Go To  13

      No 

      • Go To  8
  8. CHECK THE (K441) CMP SIGNAL CIRCUIT FOR A SHORT TO ANOTHER VOLTAGE SUPPLY CIRCUIT 
    1. Turn the ignition off.
    2. Disconnect the PCM C2 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 the GPEC Diagnostic Adaptor to perform the diagnosis.

    3. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    4. Check for continuity between the (K441) CMP Signal circuit and any other 5 volt and 12 volt circuits at the GPEC Adaptor.

      Is there continuity between the (K441) CMP Signal circuit and any other 5 volt and 12 volt circuits?

      Yes 

      • Repair the circuit that shows continuity with the (K441) CMP Signal circuit ?
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  9
  9. CHECK THE (K441) CMP SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    1. Check for continuity between ground and the (K441) CMP Signal circuit in the Camshaft Position Sensor harness connector.

      Is there continuity between ground and the (K441) CMP Signal circuit?

      Yes 

      • Repair the (K441) CMP Signal circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  10
  10. CHECK THE (K441) CMP SIGNAL CIRCUIT FOR A SHORT TO THE (K900) SENSOR GROUND CIRCUIT 
    1. Check for continuity between the (K441) CMP Signal circuit and the (K900) Sensor Ground circuit in the Camshaft Position Sensor harness connector.

      Is there continuity between the (K441) CMP Signal circuit and the (K900) Sensor Ground circuit in the Camshaft Position Sensor harness connector?

      Yes 

      • Repair the (K441) CMP Signal circuit for a short to the (K900) Sensor Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  11
  11. CHECK THE (K441) CMP SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (K441) CMP Signal circuit between the Camshaft Position Sensor harness connector and the GPEC Adaptor.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  12

      No 

      • Repair the (K441) CMP Signal circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  12. CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    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 Position Sensor harness connector and the GPEC Adaptor.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To 13

      No 

      • Repair the (K900) Sensor Ground circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  13. CHECK THE CAMSHAFT POSITION SENSOR WIRING, CONNECTIONS, MOUNTING, AND FOR CONTAMINATION 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft 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 Position Sensor for conditions such as loose mounting screws, damage, or cracks.
    5. If no other problems are found, remove the Camshaft Position Sensor.
    6. Inspect the Camshaft 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 

      • Replace the Camshaft Position Sensor in accordance with the Service Information. The "Cam/Crank Relearn" Procedure  must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP sensor, flywheel, valvetrain, timing chain or gears. Refer to SENSOR, CAMSHAFT POSITION, REMOVAL AND INSTALLATION . Failure to do so can cause a misfire fault to set. With the scan tool, perform the "Cam/Crank Relearn" Procedure.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
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