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.

ACTIVE DTC
1. Turn the ignition on.
2. Using the scan tool, record all Freeze frame data.
3. Using the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Turn the ignition on.
6. Using the scan tool, actuate the Radiator Clutch Fan control on.
7. Using the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (K161) CLUTCH FAN SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
1. Stop actuation of the Radiator Clutch Fan.
2. Turn the ignition off.
3. Disconnect the Radiator Clutch Fan harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
4. Turn the ignition on.
5. Measure the voltage on the (K161) Clutch Fan Supply circuit at the Radiator Clutch Fan harness connector.
  Is the voltage reading near battery voltage?
  
  Yes
  - Repair the (K161) Clutch Fan Supply circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK THE (K161) CLUTCH FAN SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the resistance of the (K161) Clutch Fan Supply circuit between the PCM C1 harness connector and the Radiator Clutch Fan harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (K161) Clutch Fan Supply circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K971) ACTUATOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K971) Actuator Ground circuit between the PCM C1 harness connector and the Radiator Fan harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K971) Actuator Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE RADIATOR CLUTCH FAN
1. Measure the resistance between the (K161) Clutch Fan Supply circuit and the (K971) Actuator Ground circuit through the Radiator Clutch Fan.
  Is the resistance between 6.0 and 10.0 Ohms?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace the Radiator Clutch Fan in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .