Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

OTHER DTCS
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Are other DTCs present?
  
  Yes
  - Repair other DTCs first.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 2.
HARNESS OPEN

Fig 1: Measuring Voltage Between 5-Volt Supply Circuit & A/C Pressure Sensor Return Circuit Of A/C Pressure Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the A/C Pressure Sensor harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Turn the ignition on.
4. Measure the voltage between the (C818) 5-Volt Supply circuit and (C918) A/C Pressure Sensor Return circuit of the A/C Pressure Sensor harness connector.
  Is the voltage between 4.5 and 5.5 volts?
  
  Yes
  - Go To 3.
  No
  - Go To 4.
A/C PRESSURE SENSOR

Fig 2: Measuring Voltage Between 5-Volt Supply Circuit & A/C Pressure Sensor Return Circuit Of A/C Pressure Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. While monitoring scan tool, use a jumper wire to connect the (C918) A/C Pressure Sensor Return circuit to the (C18) A/C Pressure Sensor Signal circuit at the A/C Pressure Sensor harness connector.
  Did P0532 set?
  
  Yes
  - Replace the A/C Pressure Sensor.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE (C818) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

Fig 3: Checking The Totally Integrated Power Module (TIPM)
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the C1 TIPM harness connectors.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the voltage between the (C818) 5-Volt Supply circuit at the harness connector and ground.
  Is the voltage below 1.0 Volt?
  
  Yes
  - Go To 5.
  No
  - Repair the (C818) 5-Volt Supply circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (C18) SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Measure the voltage between the (C18) A/C Pressure Sensor Signal circuit at the harness connector and ground.
  Is the voltage below 1.0 Volt?
  
  Yes
  - Go To 6.
  No
  - Repair the (C18) A/C Pressure Sensor Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (C918) RETURN CIRCUIT FOR AN OPEN BETWEEN THE TIPM HARNESS CONNECTOR AND THE A/C HARNESS CONNECTOR
1. Measure the resistance of the (C918) A/C Pressure Sensor Return circuit between the A/C Pressure Sensor harness connector and the C1 TIPM harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 7.
  No
  - Repair the (C918) A/C Pressure Sensor Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
TOTALLY INTEGRATED POWER MODULE

Fig 4: Checking The Totally Integrated Power Module (TIPM)
Courtesy of CHRYSLER LLC
1. Reconnect the C1 TIPM harness connectors.
2. Turn the ignition on.
3. While monitoring scan tool, use a jumper wire to connect the (C918) A/C Pressure Sensor Return circuit with the (C18) A/C Pressure Sensor Signal circuit at the A/C Pressure Sensor harness connector.
  Did DTC P0532 set?
  
  Yes
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
  No
  - Replace the Totally Integrated Power Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .