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
1. Start the engine and allow it to reach normal operating temperature.
  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 step 2
  No
  - Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
(G6) EOP SIGNAL CIRCUIT SHORTED TO GROUND

Fig 1: Checking EOP Signal Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Engine Oil Pressure Switch connector.
3. Disconnect the Powertrain Control Module (PCM) connector.
4. Measure the resistance between ground and the (G6) EOP Signal circuit in the Engine Oil Pressure Switch harness connector.
  Is the resistance above 100 ohms?
  
  Yes
  - Go to step 3
  No
  - Repair the (G6) EOP Signal circuit for a short to ground.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(G6) EOP SIGNAL CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE

Fig 2: Checking EOP Signal Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (G6) EOP Signal circuit between the Engine Oil Pressure Switch harness connector and the Powertrain Control Module (PCM) harness connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the (G6) EOP Signal circuit for an open circuit or high resistance.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
ENGINE OIL PRESSURE SWITCH
1. Turn the ignition off.
2. Connect the Powertrain Control Module (PCM) connector.
3. Turn the ignition on.
4. With the scan tool, select View DTCs.
  NOTE: The PCM should display an Engine Oil Pressure Sensor Circuit High DTC with the switch disconnected.
  
  Is the status Active for an Engine Oil Pressure Sensor Circuit High DTC with the switch disconnected?
  
  Yes
  - Replace the Engine Oil Pressure Switch 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 5
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Oil Pressure Switch 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. Refer to any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .