Diagnostic Test

ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go to step 2
  No
  - Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
OIL PRESSURE SWITCH INTERNAL FAILURE
1. Turn the ignition off.
2. Disconnect the Oil Pressure Switch harness connector.
  NOTE: When there is no oil pressure present, the Oil Pressure Switch contacts are normally closed.
  
  NOTE: Engine must be off for a minimum of 90 seconds to allow for the oil pressure to bleed down.
3. Measure the resistance between the Engine Oil Pressure Signal circuit terminal in the Oil Pressure Switch and ground.
  Is the resistance above 5 ohms?
  
  Yes
  - Replace the Oil Pressure Switch.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
  No
  - Go To step 3
(G6) ENGINE OIL PRESSURE SIGNAL CIRCUIT ABOVE 11.0 VOLTS

Fig 1: Checking Engine Oil Pressure Signal Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition on.
2. Measure the voltage of the Engine Oil Pressure Signal circuit at the Oil Pressure Switch harness connector.
  Is the voltage above 11.0 volts?
  
  Yes
  - Go To step 4
  No
  - Go To step 5
(G6) ENGINE OIL PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 2: Checking Engine Oil Pressure Signal Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the PCM harness connector.
3. Turn the ignition on.
4. Measure the voltage of the Engine Oil Pressure Signal circuit at the Oil Pressure Switch harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (G6) Engine Oil Pressure Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
(G6) ENGINE OIL PRESSURE SIGNAL CIRCUIT OPEN

Fig 3: Checking Engine Oil Pressure Signal Circuit
Courtesy of CHRYSLER LLC
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 to perform diagnosis.
2. Measure the resistance of the (G6) Engine Oil Pressure Signal circuit from the Oil Pressure Switch harness connector to the appropriate terminal of special tool #8815.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the open (G6) Engine Oil Pressure Signal circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure