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HOMESERVICE MANUALSJEEP2009GRAND CHEROKEE LAREDO, 3.0 M, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 9 (DTCS P0125 TO P0196 - GAS)P0196-ENGINE OIL TEMPERATURE SENSOR CIRCUIT PERFORMANCEDIAGNOSTIC TEST
2009 Jeep Grand Cherokee Laredo, 3.0 M, AWD

Diagnostic Test

2009 Jeep Grand Cherokee Laredo, 3.0 M, AWDSECTION Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
  1. ACTIVE DTC 
    1. Turn the ignition off.
    2. If possible, allow the vehicle to sit with the ignition off for more than 480 minutes in an environment where the temperature is consistent and above -7°C (19.4°F).
    3. Test drive the vehicle. The vehicle must exceed 48 km/h (30 mph) during the test drive. Do not cycle the ignition off when the test drive is completed.
    4. With a scan tool, select View DTCs.

      Is the status Active or Pending for this DTC?

      Yes 

      • Go to step  3

      No 

      • Go to step  2
  2. ENGINE OIL TEMPERATURE 
    1. Turn the ignition off.
    2. Allow the vehicle to sit with the ignition off in an environment where the temperature is consistent and above -7°C (19.4°F) until the engine coolant temperature is equal to ambient temperature.
    3. Turn the ignition on.
    4. With a scan tool, compare the Engine Oil Temperature Sensor value to the AAT, ECT, and IAT sensor values.

      Is the Engine Oil Temperature Sensor value within 10°C (18°F) of the other sensor values?

      Yes 

      No 

      • Go to step  3
  3. ENGINE OIL TEMPERATURE SENSOR VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Engine Oil Temperature Sensor harness connector.
    3. Turn the ignition on.
    4. With a scan tool, read the Engine Oil Temperature Sensor voltage.
      NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with the connector disconnected.

      Does the scan tool display the voltage as described above?

      Yes 

      • Go to step  4

      No 

      • Go to step  5
  4. ENGINE OIL TEMPERATURE SENSOR 
    Fig 1: Engine Oil Temperature Sensor Harness Connector
    GC0090705Courtesy of CHRYSLER LLC
    1. Turn the ignition on.
    2. With a scan tool, read the Engine Oil Temperature Sensor voltage.
    3. Connect a jumper wire between the (G224) EOT Signal circuit and the (K900) Sensor Ground circuit in the Engine Oil Temperature Sensor harness connector.
      NOTE: The sensor voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place.

      Does the scan tool display the voltage as described above?

      Yes 

      No 

      • Go to step  5
  5. (G224) EOT SIGNAL CIRCUIT HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Connect the Engine Oil Temperature Sensor 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 PCM Pinout Box 8815 along with the Adapter 8815-1 to perform the diagnosis.
    3. Using a voltmeter, perform a voltage drop test by backprobing the (G224) EOT Signal circuit at the Engine Oil Temperature Sensor harness connector and probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter.
      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.
    4. Start the engine.

      Is the voltage below 0.5 volts?

      Yes 

      • Go to step  6

      No 

  6. (K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE 
    1. Turn the ignition off.
      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 PCM Pinout Box 8815 along with the Adapter 8815-1 to perform the diagnosis.
    2. Using a voltmeter, perform a voltage drop test by backprobing the (K900) Sensor Ground circuit at the Engine Oil Temperature Sensor harness connector and probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter.
      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.
    3. Start the engine.

      Is the voltage below 0.5 volts?

      Yes 

      • Go to step  7

      No 

  7. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Oil Temperature 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. Verify that there is good pin to terminal contact in the EOT Sensor and Control Module connectors.
    4. Refer to any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No 

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.