Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
NOTE: Diagnose any CAN - C Communication DTCs before continuing.
1. Turn the ignition off.
2. If possible, allow the vehicle to sit with the ignition off for more than 60 minutes in an environment where the temperature will allow the oil temperature to cool down.
3. Start the engine and allow it to reach normal operating conditions.
4. With a scan tool, select View DTCs.
  Is the status Active or Pending for this DTC?
  
  Yes
  - Go to step 2
  No
  - Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
ENGINE OIL
1. The following conditions must be checked:
- OEM recommended oil viscosity is being used.
- Customer is following the oil change schedule.
- Check the engine oil for contamination. (i.e., fuel and/or engine coolant)
- Internal engine condition that may effect oil pressure.
(G24) EOT SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 1: Checking Engine Oil Temperature Sensor Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Engine Oil Temperature Sensor connector.
3. Disconnect the Powertrain Control Module (PCM) connector.
4. Turn the ignition on.
5. Measure the voltage of the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (G24) EOT Signal circuit for a short to voltage.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 4
(G24) EOT SIGNAL CIRCUIT SHORTED TO GROUND

Fig 2: Checking Engine Oil Temperature Sensor Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance between ground and the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.
  Is the resistance above 100 ohms?
  
  Yes
  - Go to step 5
  No
  - Repair the (G24) EOT Signal circuit for a short to ground.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(G24) EOT SIGNAL CIRCUIT SHORTED TO (K915) SENSOR GROUND CIRCUIT

Fig 3: Checking Engine Oil Temperature Sensor Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (G24) EOT Signal circuit and the (K915) Sensor Ground circuit in the Engine Oil Temperature Sensor harness connector.
  Is the resistance above 100 ohms?
  
  Yes
  - Go to step 6
  No
  - Repair the (G24) EOT Signal circuit for a short to the (K915) Sensor Ground circuit.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(G24) EOT SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE

Fig 4: Checking Engine Oil Temperature Sensor Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (G24) EOT Signal circuit between the Engine Oil Temperature Sensor harness connector and the Powertrain Control Module (PCM) harness connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 7
  No
  - Repair the (G24) EOT Signal circuit for an open circuit or high resistance.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K915) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE

Fig 5: Checking Engine Oil Temperature Sensor Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K915) Sensor Ground circuit between the Engine Oil Temperature Sensor harness connector and the Powertrain Control Module (PCM) harness connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 8
  No
  - Repair the (K915) Sensor Ground for an open circuit or high resistance.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
ENGINE OIL TEMPERATURE SENSOR

Fig 6: Checking Engine Oil Temperature Sensor Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Connect the Powertrain Control Module (PCM) connector.
3. Connect a jumper wire between the (K915) Sensor Ground circuit and the (G24) EOT Signal circuit in the Engine Oil Temperature 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 1.0 volt with the jumper wire in place?
  
  Yes
  - Replace the Engine Oil Temperature Sensor in accordance with the Service Information.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 9
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).
- 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.