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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 499 (2.4L - DTCS P000A To P0303) >> Diagnosis And Testing >> P0198-Engine Oil Temperature Sensor Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    Diagnose and repair any system voltage or sensor reference voltage DTCs before continuing with this test.

    1. Turn the ignition on.
      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. CHECK THE (G24) EOT SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Measuring Voltage Of EOT Signal Circuit In Engine Oil Temperature Sensor Harness Connector
    GC0099802Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Engine Oil Temperature Sensor harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.

      Is the voltage above 5.2 volts?

      Yes 

      • Repair the (G24) EOT Signal circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE (G24) EOT SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the PCM C1 and C2 harness connectors.
      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) to the PCM C2 harness connector.
    4. Measure the resistance of the (G24) EOT Signal circuit between the EOT Sensor harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (G24) EOT Signal circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (K915) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    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.

    1. Connect the (special tool #10436, Adapter, GPEC Diagnostic) to the PCM C1 harness connector.
    2. Measure the resistance of the (K915) Sensor Ground circuit between the EOT Sensor harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the (K915) Sensor Ground 3 circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. ENGINE OIL TEMPERATURE SENSOR 
    Fig 2: Engine Oil Temperature Sensor Harness Connector End View
    GC0099807Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Reconnect the PCM C1 and C2 harness connectors.
    3. Connect a jumper between the (G24) EOT Signal circuit and the (K915) Sensor Ground in the EOT Sensor harness connector.
    4. Turn the ignition on.
    5. With the scan tool, read the Engine Oil Temperature Sensor signal voltage.

      Is the voltage below 0.1 volts with the jumper in place?

      Yes 

      No 

      • Go To  6
  6. 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.
    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 

      • Repair as necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No